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OPERATION MANUAL
MODEL CLI-1450
SCANNING SIGNAL LEVEL & LEAKAGE METER
This document contains information proprietary to Wavetek Wandel Goltermann. The information in this document is not to be used or duplicated in any manner without the prior approval, in writing, of Wavetek Wandel Goltermann.
Wavetek Wandel Goltermann CATV Division
5808 Churchman Bypass Indianapolis, IN 46203-6109 (800) 851-1198 (317) 788-9351 Fax: (317) 614-8313 E-Mail: [email protected] Internet: http://www.wavetek.com
11/99 Rev. D Manual Part No. 6510-00-0416
Copyright © 1999
Wavetek Wandel Goltermann
WARRANTY
Wavetek Wandel Goltermann warrants that all Products manufactured or procured by Wavetek Wandel Goltermann conform to Wavetek Wandel Goltermann's published specifications and are free from defects in materials and workmanship for a period of one (1) year from the date of delivery to the original Buyer, when used under normal operating conditions and within the service conditions for which they were designed. This warranty is not transferrable and does not apply to used or demonstration products. The obligation of Wavetek Wandel Goltermann arising from a Warranty claim shall be limited to repairing, or at its option, replacing without charge, any assembly or component (except batteries) which in Wavetek Wandel Goltermann's sole opinion proves to be defective within the scope of the Warranty. In the event Wavetek is not able to modify, repair or replace nonconforming defective parts or components to a condition as warranted within a reasonable time after receipt thereof, Buyers shall receive credit in the amount of the original invoiced price of the product. Wavetek Wandel Goltermann must be notified in writing of the defect or nonconformity within the Warranty period and the affected Product returned to Wavetek Wandel Goltermann's factory, designated Service Provider, or Authorized Service Center within thirty (30) days after discovery of such defect or nonconformity. Buyer shall prepay shipping charges and insurance for Products returned to Wavetek Wandel Goltermann or its designated Service Provider for warranty service. Wavetek Wandel Goltermann or its designated Service Provider shall pay costs for return of Products to Buyer. Wavetek Wandel Goltermann shall have no responsibility for any defect or damage caused by improper storage, improper installation, unauthorized modification, misuse, neglect, inadequate maintenance, accident or for any Product which has been repaired or altered by anyone other than Wavetek Wandel Goltermann or its authorized representative or not in accordance with instructions furnished by Wavetek Wandel Goltermann. The Warranty described above is Buyer's sole and exclusive remedy and no other warranty, whether written or oral, expressed or implied by statute or course of dealing shall apply. Wavetek Wandel Goltermann specifically disclaims the implied warranties of merchantability and fitness for a particular purpose. No statement, representation, agreement, or understanding, oral or written, made by an agent, distributor, or employee of Wavetek Wandel Goltermann, which is not contained in the foregoing Warranty will be binding upon Wavetek Wandel Goltermann, unless made in writing and executed by an authorized representative of Wavetek Wandel Goltermann. Under no circumstances shall Wavetek Wandel Goltermann be liable for any direct, indirect, special, incidental, or consequential damages, expenses, or losses, including loss of profits, based on contract, tort, or any other legal theory.
Extended Warranty Programs
Extended warranties and service contracts are available for new and currently owned equipment for an additional cost. Contact the Customer Service Department (800 851-1198) for details pertaining to extended warranties and service contracts.
Return Authorization Procedure
The customer MUST obtain a RETURN AUTHORIZATION NUMBER from the Customer Service Department (800 851-1198) prior to returning any equipment for warranty or non-warranty repair. Wavetek accepts no liability for any instrument or subassembly returned to the factory without this number. Any correspondence regarding returned instruments or subassemblies should be referenced to that number.
Contents
Introducing the CLI-1450 .................................................................... 1-1 Introduction ................................................................................ 1-1 Leakage Detection and Measurement ..................................... 1-1 Level Measurements .................................................................. 1-2 Digital Carrier Measurement Option 1450Dig ......................... 1-3 Measurement Logging ............................................................... 1-3 Auto Tests ................................................................................... 1-3 Multiple Channel Plans ............................................................. 1-4 Docking Station Option .............................................................. 1-4 Reverse Ingress Scan (MSSUB Option Only) ............................ 1-4 Getting Acquainted with the Keypad ...................................... 1-7 Getting Acquainted with the Screen................................................1-9 The Navigator ........................................................................... 1-12 Configure ................................................................................... 1-12 Global Configuration ................................................................ 1-13 Measurement Configuration ..................................................... 1-17 Leakage Configuration ............................................................. 1-21 Channel Plan Configuration .................................................... 1-25 Using the CLI-1450 ............................................................................ 2-1 Introduction ................................................................................ 2-1 Leakage ....................................................................................... 2-1 Annunciators ........................................................................ 2-2 Measurement Peak .............................................................. 2-3 Adjusting the Alarm Volume ............................................. 2-3 Selecting the Antenna Type .............................................. 2-3 Entering the Leakage Distance ......................................... 2-4 Compensation ...................................................................... 2-5 Searching for a Leak ........................................................... 2-5 Measurement Hold ............................................................. 2-6 Printing the Screen .............................................................. 2-7 Warning Indicators ............................................................... 2-7 Installation ................................................................................... 2-7 Selecting Channel Packages ............................................... 2-8 Selecting the Test Point ...................................................... 2-9
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Installation Results Summary................................................. 2-9 The Channel List ............................................................... 2-10 The Pass/Fail Indicator ..................................................... 2-11 Channel Measurement ..................................................... 2-11 Printing an Installation Report .......................................... 2-12 Storing Installation Results ............................................... 2-12 Level ......................................................................................... 2-12 Adjusting the Reference Level ....................................... 2-13 Tuning by Channel ........................................................... 2-13 Tuning by Frequency ........................................................ 2-13 Measurement Hold ............................................................ 2-14 Printing the Screen ............................................................ 2-14 Warning Indicators ............................................................. 2-15 Full Scan .................................................................................... 2-15 Moving the Marker ............................................................ 2-16 Adjusting the Reference Level......................................... 2-16 Adjusting the Scale ............................................................ 2-16 Zooming In and Out .......................................................... 2-16 Checking Limits ................................................................ 2-17 Checking Limits on an Individual Channel ..................... 2-18 Measurement Hold ............................................................ 2-19 Printing the Screen ............................................................ 2-19 Storing a Scan File ............................................................. 2-19 Warning Indicators ............................................................. 2-19 Tilt ............................................................................................. 2-20 Moving the Marker ............................................................ 2-21 Selecting the Low and High Carriers ................................ 2-21 Adjusting the Reference Level......................................... 2-21 Adjusting the Scale ............................................................ 2-21 Measurement Hold ............................................................ 2-22 Printing the Screen ............................................................ 2-22 Storing a Tilt File .............................................................. 2-22
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Scan ............................................................................................ 2-22 Moving the Marker ............................................................ 2-23 Adjusting the Reference Level ......................................... 2-23 Adjusting the Scale ............................................................ 2-23 Checking Limits ................................................................ 2-23 Measurement Hold ............................................................ 2-24 Printing the Screen ............................................................ 2-25 Storing a Scan File ............................................................. 2-25 Auto Test ................................................................................... 2-25 Configuring an Auto Test .................................................. 2-25 Performing an Auto Test ................................................... 2-28 Canceling an Auto Test ..................................................... 2-29 View ........................................................................................... 2-30 The File Directory ............................................................ 2-30 Viewing Installation Files ................................................. 2-31 Viewing Scan Files ............................................................ 2-32 Viewing Auto Test Files ................................................... 2-33 Ingress Scan (MSSUB Option Only) ........................................ 2-36 Moving the Marker ............................................................ 2-37 Adjusting the Reference Level ......................................... 2-37 Adjusting the Scale ............................................................ 2-37 Zooming In and Out .......................................................... 2-37 Peak Measurement Hold .................................................. 2-37 The Pass/Fail Indicator ..................................................... 2-38 Measurement Hold ............................................................ 2-38 Printing the Screen ............................................................ 2-38 Storing an Ingress Scan File .............................................. 2-38 Reference ............................................................................................. 3-1 Using the Reference Section .................................................... 3-1 Help ............................................................................................. 3-1 Information ................................................................................. 3-2 Technical Support ....................................................................... 3-3
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Appendices Appendix A: Specifications ...................................................... A-1 Appendix B: Power Management and Battery ........................ B-1 Battery Pack Location and Installation ......................... B-1 Charging the Battery Pack .............................................. B-1 Battery Tips ...................................................................... B-1 Appendix C: Interface Port ..................................................... C-1 Connector ......................................................................... C-1 Cable Specifications ........................................................ C-2 Appendix D: Setting up a Calibrated Leak Field................. D-1 Introduction ...................................................................... D-1 Setup ................................................................................. D-2 Calibration ........................................................................ D-3 Appendix E: Technical Note - VMA-3 .................................. E-1 Introduction ...................................................................... E-1 Installation ........................................................................ E-1 Operation .......................................................................... E-3 Care and Maintenance .................................................... E-3
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MODEL CLI-1450
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INTRODUCTION
Introducing the CLI-1450
The CLI-1450 Leakage/Signal Level Meter is a high performance instrument designed for cable television technicians. The durable, water-resistant CLI-1450 makes innovative use of a graphics LCD to simplify operation. The LCD backlight makes measurements easier in crawl spaces and behind television sets. The display is also easy to see in bright sunlight.
LEAKAGE DETECTION AND MEASUREMENT
Your CLI-1450 is a highly sensitive, hand-held leakage meter that makes finding and measuring RF leakage easy. Because it can accurately detect and measure video signals, it is not necessary to inject an additional RF carrier for the purpose of monitoring leakage. Your CLI-1450 is frequency agile -- you can configure it to monitor a carrier frequency between 115 to 140 MHz. You can use the optional LT1000 Leakage Tagger to modulate an existing carrier with a distinct tag signal. This enhances detection sensitivity in noisy environments and reduces false alarms. In overbuild situations, you can determine if a detected leak is emanating from the network that you are testing. An audible alarm notifies you when your CLI-1450 has detected a leak. You specify the level threshold at which the alarm is triggered. 1-1
To reduce the likelihood of false alarms, you can configure the alarm to occur only when a tag signal is present. You can quickly adjust the volume of the alarm and even mute it if desired. Your CLI-1450 makes the accurate leakage measurements that you need to verify compliance with government regulations. The type of antenna you are using and the distance from the leak are considered when measuring field strength. You can select from among four antenna types -- monopole, dipole, vehicle mount and custom. The antenna factor for each type is programmable. The most accurate and repeatable measurements are made using a dipole antenna located at the required reference distance. This is the only method recommended by Wavetek Wandel Goltermann for making compliance measurements. You can also make approximate measurements up to 30 meters away by entering the estimated distance from the leak. Your CLI-1450 will calculate what the equivalent field strength would be at the reference distance. These measurements are adequate for grading leaks you have found and prioritizing your repair schedule based on leak severity. The CLI-1450 has the ability to interface with GPS tracking systems using its built-in serial port.
LEVEL MEASUREMENTS
Your CLI-1450 performs accurate signal level measurements -- even on scrambled channels with horizontal or vertical sync suppression. A scan mode allows you to see the levels of all carriers in a spectral display. You can also view level measurements at a single frequency or for a specific channel. When tuned to a channel, the display indicates the levels of the video and audio carriers, and the difference between the carrier levels. When performing an installation, you can press the Installation Check key to quickly verify that all channels are within limits that you have defined. You can use this feature to determine whether or not a subscriber connection meets government regulations. A special channel plan building mode automatically determines 1-2
which channels are active on your cable system. Once you have defined a channel plan, you can copy it to other units. You can also create channel plans using StealthWare (Version 3.0), the WindowsTM based data management package for Stealth products. For documentation purposes, you can print any measurement screen to a serial printer (Wavetek P-Stealth Printer). Following an installation check, you can print an installation report and file it with the work order. You can also print a report that lists all configuration settings including the channel plan. The CLI-1450 tunes from 45 to 559 MHz with options to extend the range to 5 to 890 MHz.
DIGITAL CARRIER MEASUREMENT OPTION 1450DIG
As digital services such as audio, video, Internet, and telephony become more common, a way of accurately measuring their carriers is needed. The 1450DIG digital carrier measurement option provides an average power measurement of QPSK, 16-QAM, 64-QAM, 256QAM, QPR, BPSK, CAP-16, and other modulation schemes. To be measured, carriers must be in a state of continuous (i.e., non-burst) transmission.
MEASUREMENT LOGGING (signal level modes only)
With the CLI-1450, you can store installation checks that you have performed throughout the day. You can also store scan and tilt measurements. Each file is time and date stamped and can be recalled later for viewing on the LCD screen. When viewing a file, you can adjust the screen settings the same as when you are viewing a "live" measurement. Using the built-in serial port, you can print files and even upload them to StealthWare (Version 3.0) for further analysis and archiving.
AUTO TESTS (signal level modes only)
Automated tests are easy with the CLI-1450 and provide a convenient way of acquiring proof-of-performance compliance data. Tests can be 1-3
executed immediately or scheduled over a period of time. To conserve battery life, CLI-1450 shuts itself off between scheduled intervals. When configuring an Auto Test, you can record information about the location at which the test is being performed. Files can be created for commonly tested locations so you need only enter the information once. Auto Tests results are time, date, and temperature stamped and can be viewed on the LCD screen. Limits are applied to the measurement data with out-of-tolerance conditions concisely indicated. You can print a test report for each interval or a comprehensive 24 hour report that summarizes data collected from up to four intervals. Auto Test result files can be uploaded to StealthWare (Version 3.0).
MULTIPLE CHANNEL PLANS
The CLI-1450 stores channel plans that you have built and edited. This is convenient if you use your CLI-1450 for more than one plant. You can quickly select the correct channel plan for the plant at which you are working.
DOCKING STATION OPTION
The DS-1 docking station simplifies connection to a vehicle antenna and power source. Your CLI-1450 automatically recharges when resting in the docking station. The adjustable arm makes it easy to view the display from the driver's seat.
REVERSE INGRESS SCAN
Reverse ingress scan is a feature of the sub-band option for models CLI-1450 and MS1300. A continuous fast scan is performed that permits the installer to see ingress signals in the reverse band. The operator can set the start and stop frequencies of the scan, the interval, and the scan rate (dwell). In use, once the installation is complete, the meter can be connected to the tap end of the drop and the reverse scan mode selected. A user programmable limit can be set for simple identification of problem drops. To check for intermittent ingress, the meter can be set in the peak hold mode to catch transient signals. The screen can be saved for later viewing, printing, or upload to 1-4
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4 3 6
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1-5
Docking Station Port
Antenna Port
RF Port
Serial Port 1-6
Charger Port
StealthWare 3.0. Refer to page 1-21 for configuration instructions and page 2-36 for operating instructions
GETTING ACQUAINTED WITH THE KEYPAD
The keypad consists of the following: · three Soft keys · a Power key · four Mode Selection keys · an Enter key · eleven Alphanumeric keys · a Shift key 1 . SOFT KEYS There are three horizontally oriented soft keys located below the display. The function of each soft key changes depending on the particular operation being performed and is represented by an icon immediately above the key. 2. POWER KEY - ON/OFF Turns your CLI-1450 on and off. 3. MODE SELECTION KEYS INSTALLATION MODE Easily check the channels that you have installed and verify that they are within limits. LEVEL MODE Measure the signal level at a specific channel or frequency. FULL SCAN MODE View a spectrum graph of all carrier levels in your channel plan.
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NAVIGATOR Instantly "travel" to any mode using the NAVIGATOR. 4. ENTER KEY
Press this key to terminate your entry or selection. 5. ALPHANUMERIC KEYS You use the alphanumeric keys to enter data while operating your CLI-1450. Notice that these keys have a numeral and up to three alphabetic characters labeled on them. You can only access the characters when alphanumeric entry is appropriate. In the alphanumeric entry mode, you sequence through each character and the numeral by repeatedly pressing the key. You can also access a set of special characters that do not appear on the keypad by using the up and down arrows. Once the desired character is displayed, move the cursor to the next position using the right arrow. Be sure to terminate your entry by pressing the key. 6 . SHIFT KEY Some keys perform more than one function. The secondary function of a key is represented by an icon printed next to it. Notice that the icons are color coded with the SHIFT key. You access the secondary function by first pressing the SHIFT key and then the icon representing the desired function. 7. SECONDARY FUNCTIONS LEAKAGE MODE Detect and measure RF leakage CONFIGURE MODE Configure your CLI-1450 for your own specific needs. AUTO REFERENCE Let CLI-1450 automatically set the reference level for you. 1-8
SNAP SHOT Hold the measurement. The measurement is retained even if the cable is disconnected from the input. CLEAR Clear-out your entry and start over again. BACKLIGHT ON/OFF Quickly turn the backlight on when it is too dark to see the display. POSITIVE / NEGATIVE Enter positive and negative values (when allowed). HELP View a description of each icon found in the current soft key menu. PRINT Print a measurement screen, installation report, auto test report, or configuration report to a serial printer. STORE FILE Store an Installation, Scan, or Tilt screen for later viewing, printing or uploading to StealthWare (Version 3.0).
GETTING ACQUAINTED WITH THE SCREEN
There are certain elements of the screen that will become familiar to you as you use your CLI-1450. The Title Bar Notice the title bar at the very top of the screen. It presents the title and icon for the current mode you are using.
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Title Bar Indicators You may see indicators appear above the title bar from time to time. This is what they represent: This indicator appears in the top right-hand corner of the screen when you press the SHIFT key. This means that the CLI-1450 interprets the next key that you press to be a secondary function. This indicator is displayed to warn you that the battery is low. When you see this, recharge the battery or change to a fresh one as soon as possible. This indicates that the RF synthesizer has become unlocked. If this condition persists, the unit may need repair. The Status Bar Look for the status bar in the lower portion of the screen. It displays the current date and time. A bar meter indicates the charge remaining in your CLI-1450's battery. When the battery meter reads low, you should switch to a freshly charged battery soon.
Note When viewing an Installation or Scan file, the status bar shows the date and time that the file was stored instead of the current date and time. Soft Key Icons There are three soft keys located immediately below the display. The function of a soft key is represented by the icon directly above it. Note If the soft key function is not currently available, the icon appears "grayed" or "dimmed".
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Lists Lists present several items for viewing and/or selecting. Notice that the currently chosen item is highlighted. You can scroll through the list using the up and down arrows.
A list can be either "active" or "inactive". You can tell by looking at the border. If the border is solid, the list is active and any keys that you press are directed toward it. If the border is dim, the list is inactive and is not affected by key presses. Usually you can make a list become active by pressing the key. When there are more items in the list than can be displayed at one time, a scroll bar appears along the right-hand edge of the list. You can use this to get an idea of where you are. When you have reached the first or last item, an arrow appears inside the scroll box pointing to the direction you can go. The Edit Box The edit box appears in the lower portion of the screen when it is necessary to enter values into your CLI-1450.
An edit box can be either "active" or "inactive". You can tell by looking at the border. If the border is solid, the edit box is active and any keys that you press are directed toward it. If the border is dim, the edit box is inactive and is not affected by key presses. Usually, you can make the edit box become active by pressing the sure to press the entry. key. Be again when you have finished making your
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THE NAVIGATOR
You can easily travel to any mode using the NAVIGATOR. To access the NAVIGATOR, press the key.
An icon appears on the screen for each available mode. Use the up, down, left, and right arrows to highlight the icon that represents the mode you want to use. Notice that the name of the mode appears on the lower portion of the screen beneath the status bar. To get a description of the highlighted mode, press the SHIFT + key. To travel to the mode you have highlighted, press any one of the soft keys or the key. Tip You can also use the numeric keys to highlight the desired icon in the NAVIGATOR screen. Each key corresponds to an icon in the matrix.
CONFIGURE
Before using your CLI-1450, you may want to configure it for your specific needs. The CONFIGURE mode allows you to select global, leakage and measurement related preferences and to build and edit a channel plan that matches your cable plant.
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To configure your CLI-1450, press the SHIFT + keys or choose icon from the NAVIGATOR. The following screen appears: the
Configuration settings are divided into five categories; GLOBAL, MEASUREMENT, LEAKAGE. CHANNEL PLAN, and INGRESS. Use the up and down arrows to highlight the category you want and then press the key. Tip You can also use the left-hand and right-hand soft keys to scroll through the CONFIGURE categories and then press the middle soft key to select the highlighted category. PRINTING A CONFIGURATION REPORT In most configuration screens, you can print a comprehensive configuration report by pressing the SHIFT + keys. A bar graph appears indicating the status of the printout. The report lists all of the configurable settings including the active channel plan.
Global Configuration
OPERATOR NAME You can personalize your CLI-1450 by entering your name here. Your name will then appear on report printouts.
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CONTRAST LEVEL Adjusts the contrast level of the LCD for optimum viewing. Note The contrast of the LCD is affected be variations in temperature. Your CLI-1450 will automatically optimize the contrast level based on the current temperature as measured from the built-in sensor. SHUTOFF TIME-OUT Sets the amount of inactive time allowed before your CLI-1450 turns off automatically. This feature is useful for conserving battery life by preventing the CLI-1450 from being left on accidentally when it is not in use. You can set the time-out period to 1, 3, or 5 minutes. There is also an "always on" setting that defeats the automatic shutoff feature if desired. Note You can manually turn off your CLI-1450 at any time by pressing the button. Note The Shutoff Time-out feature is disabled during LEAKAGE mode. BACKLIGHT TIME-OUT Sets the amount of inactive time allowed before the backlight turns off automatically. The backlight consumes significant power. This feature conserves battery life by minimizing the amount of time that the backlight is on. You can set the time-out period to; 5 or 10 seconds. There is an "always off" setting for when the backlight is not needed at all. There is also an "always on" setting that defeats the backlight time-out feature. You can manually turn the backlight on or off at any time by pressing the SHIFT + keys. When manually activated, the backlight remains on continuously until the unit shuts off. Tip You can tell when the backlight is on even in bright sunlight by looking for the backlight indicator at the left-hand edge of the Title Bar. The indicator means that the backlight is currently on and will 1-14
turn off automatically. The indicator means that the backlight is on and will remain on continuously. If you see no indicator, the backlight is off. TIME Sets the time for the internal real-time clock. The time is set, displayed and printed in 24 hour format only (HH:MM:SS). DATE FORMAT You can specify the format in which the date is displayed and printed. Select between the following formats: MM/DD/YY DD.MM.YY YY.MM.DD DATE Sets the date for the internal real-time clock. You can specify the format in which the date is set, displayed and printed (see DATE FORMAT). PRINTER Select the manufacturer of the printer that you will be using. A printer with a serial interface is required. Set your printer configuration as follows: Baud Rate: Date Bits: Stop Bits: Parity: Flow Control: same as your CLI-1450 8 1 NONE Xon/Xoff
Important The baud rate of both your CLI-1450 and your printer must match (see BAUD RATE). Tip A serial to parallel converter (such as the one manufactured by Black Box Corp.) can be used for printing to a parallel printer.
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LINES/PAGE For text reports, you can specify the number of lines that will be printed on each page before a form feed command is sent. Enter 0 if you do not want any form feeds to be sent. BAUD RATE This is the baud rate that is used when your CLI-1450 communicates with another device through the serial port. Generally, you will want to use the highest rate supported. Be sure that the baud rate setting of your CLI-1450 matches that of the device that it is connected to. CLONE You can easily transfer the entire configuration from one CLI-1450 unit to another. This saves you time when configuring multiple units. First, connect a cable between the two CLI-1450 units. Select CLONE only on the unit that you want to copy the configuration to. Press the soft key to begin the transfer. Cloning copies the configuration information and active channel plan only. If you wish to copy only channel plans, use the Copy Remote Channel Plan command. Important Be sure that the baud rate setting of your CLI-1450 matches that of the device that it is connected to (see BAUD RATE). DIAGNOSTICS Performs hardware diagnostics and defaults stored preferences to factory presets. Press the key to access the diagnostics options. Factory Default Sets all stored preferences to factory presets. Press the key to initiate the default operation. Important All stored settings are lost when you perform this operation. Test Display Exercises all pixels on the LCD for test purposes. Repeated pressing of the key sequences the display between all pixels "on", all pixels "off", and the display test screen. 1-16
Measurement Configuration
TEMPERATURE UNITS Selects the units in which temperature measurements are displayed and printed. You can select between; °C or °F. SIGNAL LEVEL UNITS Selects the units that will be used for all signal level measurements. You can select between; dBmV, dBµV and dBm. PROBE COMPENSATION This can be used to compensate for losses associated with probe points found on certain amplifiers. You can enter a value between -99.9 and +99.9 dB. Probe compensation is added directly to signal level measurements. The compensation value is indicated in the upper left-hand corner of the measurement screens. There is no indication, however, if the compensation value is zero. Important The PROBE COMPENSATION value does not affect INSTALLATION mode. Level measurements made while checking an installation are uncompensated. FREQUENCY TUNING STEP SIZE This setting affects the increment/decrement step size when you are tuning the frequency using the left and right arrows. You can select a value between 25kHz and 100MHz in steps of 25kHz. SCAN AUDIO CARRIERS Select YES if you want to see the audio carriers in the full scan screen. You can achieve a faster scan by omitting the audio carriers. SCAN SCRAMBLED CHANNELS Select YES if you want to see scrambled channels in the full scan screen.
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EDIT TEST POINTS Your CLI-1450 is capable of performing tests at various locations including; SUBSCRIBER DROP, GROUND BLOCK, TAP, and USER DEFINED (or CUSTOM). Each test point has its own set of limits that you can edit. Press the key to edit the test points. A list of available test points appears.
You can enable or disable each test point in the list. When a test point is disabled, you cannot use it when performing tests. Use the up or down arrow to highlight the desired test point. If the highlighted test point is disabled, you can enable it by pressing the soft key. A check mark appears in the left-hand column to indicate when a test point is enabled. If the test point is already enabled, pressing the soft key disables it. Tip You can change the name of the USER DEFINED (CUSTOM) test point. Notice that the edit box appears when this test point is highlighted. When you press the key, the edit box becomes active and you can enter any name up to fifteen characters long. Be sure to press the key when finished to terminate your entry.
You can edit the limits for the highlighted test point by pressing the soft key. The limits appear on the screen. Scroll down the list to see all the limits.
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You can selectively enable or disable each individual limit. When a limit is disabled, your CLI-1450 excludes it when checking limits. If the highlighted limit is disabled, you can enable it by pressing the soft key. A check mark appears in the left-hand column to indicate when a limit is enabled. If the limit is already enabled, pressing the soft key disables it.
Note Analog limits are enabled by factory preset default. Digital limits are disabled by factory preset default. Note If you disable all of the limits within a test point, the test point becomes disabled. You cannot enable a test point that has no enabled limits. You can edit the value of the highlighted limit by pressing the key. When the edit box becomes active, enter the desired value. Be sure to press the key when finished to terminate your entry. Once all desired test points are enabled and edited, the unit will be able to measure digital signals during an Installation Check or an Auto Test. Press the soft key to return all limits in the test point to their factory preset values. CALIBRATION Performs user calibration for optimum measurement accuracy. Press the key to access the calibration options. 1-19
Noise Floor Correction This calibration measures the noise floor of your CLI-1450. You should perform it periodically to ensure accurate measurements. IMPORTANT Before performing the Noise Floor Correction calibration, you should make sure that there is nothing connected to either the or ports (including Docking Station, DS-1) of your CLI-1450. key to initiate the calibration procedure. Your Press the CLI-1450 will guide you through the process. IMPORTANT The CLI-1750 meter assumes that leakage tag depth of modulation is set for 3 dB. This is precisely set on the WWG Model LT-1000 Leakage Tagger at the factory. If another manufacturer's tagger is used, some calibration of percent modulation may be necessary for optimal accuracy. Follow the tagger manufacturer's procedure for performing this calibration. INGRESS Sets the measurement and limit parameters for the reverse ingress scan feature. Press the key to access the ingress options.
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Start Frequency Enter the start frequency that you want to monitor for reverse ingress. You can select from 5 to 80 MHz. Stop Frequency Enter the stop frequency that you want to monitor for reverse ingress. You can select from 5 to 80 MHz. Increment This setting affects the increment/decrement step size when you are tuning the ingress scan frequency using the left and right arrows. You can select from 25kHz to 1MHz. IMPORTANT There is a maximum of 140 measurement points. If you select the start, stop and increment such that more than 140 points are required, your CLI-1450 will create only as many points as possible. This means that the stop frequency may be lower than what you desired. Dwell This setting affects the scan rate of the ingress feature. You can select from 1 to 25. As you increase the dwell, the scan rate is slowed down. A slower scan rate allows for more sensitivity when performing the ingress scan. Check Limit Select YES here so that the ingress level can be compared to a defined limit. If selected, a visual pass/fail indicator is displayed on the measurement screen. Limit Value Enter the limit value at which a fail indication will occur. You can select from -45 to +60 dBmV.
Leakage Configuration
ALARM CONDITION This setting determines under what conditions the alarm is triggered. You can disable the alarm entirely if desired. Select from the following options: 1-21
· when the threshold is exceeded · when a tag signal is detected · when the threshold is exceeded and a tag signal is detected · disable the alarm
ALARM THRESHOLD This is the leakage measurement level at which the alarm will occur. ALARM MUTE TIME-OUT When performing leakage measurements, you can mute the audible key. This setting determines the amount alarm by pressing the of time that will elapse before the alarm is reactivated. LEAKAGE UNITS This determines the units in which leakage is measured and the alarm threshold is set. You can select between; µV/m, dBµV/m, dBmV, dBµV, µV, dBm and dB20µV. MEASUREMENT FREQUENCY Enter the frequency of the carrier that you want to monitor for RF leakage. You can select from 115 to 140 MHz. MEASUREMENT CARRIER TYPE For accurate measurements, be sure to select the type of carrier that you will be measuring leakage on -- either Carrier Wave (CW) or video. DISTANCE UNITS Select the units in which you want distance values to be displayed and entered. You can select between feet or meters. TAG MODULATION FREQUENCY Enter the modulation frequency to detect when searching for a tag. This should match the setting of the LT1000 Leakage Tagger that you are using. It is recommended that the tag modulation frequency be adjusted to a minimum of 20 Hz. By maintaining the 20 Hz tag criteria, false tags will be reduced while still preserving the video quality of the tagged carrier. You can select a Tag Modulation frequency from 3 to 25 Hz. 1-22
REFERENCE DISTANCE This is the specified distance at which leakage is to be measured. For example, in the United States, the FCC requires that all measurements be referenced to 3 meters or 10 feet. If your application requires a different reference distance, enter it here. PEAK HOLD RESET PERIOD The peak hold feature momentarily holds the peak leakage measurement value. This peak value is displayed numerically and indicated on the analog meter. This setting allows you to specify how often the peak hold value is reset. In the Find and Fix mode, the graph scale is updated to reflect the leakage reading in relation to the new peak value. EDIT ANTENNA TYPES There are several different types of antennas that you can use with your CLI-1450 when measuring leakage. Press the the antenna factor for each type. key to edit
You can edit the antenna factor of the highlighted type by pressing the key. When the edit box becomes active, enter the desired value. Be sure to press the entry. key when finished to terminate your
Press the soft key to return the antenna factor of the highlighted type to its factory preset value. The factory preset antenna factor for 1-23
the dipole antenna corresponds to theHD-1 Dipole Antenna that was shipped with your unit. If you choose to use another type of dipole antenna, you must change the antenna factor to that specified for the antenna. You can enable or disable each antenna type. When a type is disabled, you cannot use it when performing tests. Use the up or down arrow to highlight the desired antenna. If the highlighted type is disabled, you soft key. A check mark appears in can enable it by pressing the the left-hand column to indicate when an antenna type is enabled. If the type is already enabled, pressing the soft key disables it.
Channel Plan Configuration
This is a critical element of operating your unit.
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CHANNEL PLAN CONFIGURATION
What is a Channel Plan?
A channel plan is a framework of cable network parameters chosen by the user for his network. The basic entities are: · Channel format (analog, digital, scrambled, etc.) · System Bandwidth · Test Limits (digital and analog) · Carriers (audio and video)
Why do we need a Channel Plan?
A well thought-out channel plan is necessary for the proper operation of the unit. This is accomplished by specifying tilt and scan, and taking full advantage of the Auto Test and Installation Check features in the WWG instruments. Remember that the WWG instruments are capable of learning a channel plan from a cable system and storing it as a built-in plan.
How to build a Channel Plan?
Use the following step-by-step procedures to build a channel plan. The starting point is the Configure screen. Press the Shift key and the Level/Configure key to bring up the Configure screen.
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Using the up/down arrow keys, highlight Channel Plan and then press to bring up the Configure - Channel Plan screen. This screen lists the various ingredients/processes for building (configuring) a channel plan.
Select a Channel Plan
Use the up/down arrow keys to highlight SELECT CHANNEL PLAN and then press . This will bring up the Select Channel Plan screen showing the Default and other available channel plans stored in the unit. The currently active channel is denoted by an arrow tip to its left. To enable a different plan, use the up or down arrow to highlight and then press the center softkey. To delete a plan, press the left softkey.
NOTE: NOTE You cannot delete a currently active plan. You must load a different plan first. You may implement a plan from this list or let your instrument "learn" the cable plant's existing channel plan. You may then edit it as desired. To return to the Channel Plan screen, press the right softkey. 1-26
Select Video Signal Type
Highlight VIDEO SIGNAL TYPE from the Channel Plan screen (page 1-26). Choose from NTSC, PAL and SECAM types. Press .
Select Channel Sequence
Highlight CHANNEL SEQUENCE from the Channel Plan screen and press to make the Edit box active. Use up/down arrow keys to select numeric or frequency. Press . NOTE: NOTE The SCAN screen always displays channels in order of frequency regardless of the CHANNEL SEQUENCE setting.
Learn the Channel Plan
The CLI-1450 is capable of identifying which channels are on your cable plant. This allows you to quickly and easily generate a customized channel plan. With the instrument connected to the cable system, highlight BUILD CHANNEL PLAN in the Channel Plan screen (page 1-26) and then press . This will bring up the Build Channel Plan - STEP 1 screen.
In the Edit box, type the name (up to 15 characters) of your channel plan and press . Press the softkey to proceed to the Build Channel Plan- STEP 2 screen. The screen contains a list of standard channel plans to serve as a basis for your own plan. 1-27
NOTE If your system is a PAL M type, select NTSC for your NOTE: channel plan. Using up or down arrow key, highlight a base channel plan from the list and then press . Press the softkey to proceed to the Build Channel Plan - STEP 3 screen
Using the numeric keypad, type in a value for the Stop Frequency in the Edit box and press .Then press the right softkey. The unit will start searching for active channels and display the Build Channel Plan - STEP 4 screen.
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The unit will complete the build and display the Build Channel PlanSTEP 5 screen (shown right above). Press the right softkey to return to the main Channel Plan menu (page 1-26).
How to Edit the Channel Plan
Why edit the Channel Plan? An accurate channel plan is essential for testing the cable system, including limits for analog and digital carriers. Editing is required to verify that the channel plan is built correctly (has the right parameters). From the Channel Plan screen (page 1-26), use the up/down arrow keys to highlight EDIT CHANNEL PLAN, then press . This will bring up the Edit Channel Plan screen.
The screen contains a list of all channels, their frequencies and activation status (enabled channels carry a check mark under the ENA column). To disable a channel, highlight the channel and then press the left softkey. To edit a channel's parameters, highlight that channel and then press the center softkey. This will bring up the Edit Channel screen.
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IMPORTANT You may find an enabled channel that is IMPORTANT: not in your channel plan. This should be disabled. A channel may be missed if the frequency is special or level too low. IMPORTANT You must enable a channel to perform measureIMPORTANT: ments on it.
Channel Plan Parameters/Characteristics to edit
The Configure- Edit Channel screen lists the following parameters/ characteristics: ENABLED TYPE FREQ (MHz) CHANNEL NUMBER LABEL CARRIER CENTER FREQ (MHz)-- Digital MEAS BW (MHz)-- Digital PACKAGE SCRAMBLED AUD OFFSET (MHz) Enabled As mentioned earlier, a channel must be enabled in order to be measured. This is another place where you can enable or disable the channel. 1-30
Type There are three channel types from which to choose: TV -the standard video and audio carriers DUAL -a video carrier with two independent audio carriers (a European format) SNGL -a single carrier Carrier (SNGL Type only -1450DIG Option) Select the format of the carrier to be measured Analog QAM (Digital) QPSK (Digital) QPR (Digital) CAP-16 (Digital) IMPORTANT: Digital signal level measurements are accurate only when performed on carriers that are in a state of continuous (non-burst) transmission. Frequency This is the frequency of the video carrier in MHz. For a digital channel, the center frequency is required. Measurement Bandwidth (digital format only) Enter the width in frequency of the digital carrier to be measured. Channel Number The channel number can range from 1 to 999. Label You can enter a label up to four characters in length for each channel. This label appears next to the channel number on most screens to help you remember what programming is on that channel.
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Package You can organize channels into packages. In the edit box, you can select any package that is enabled (see the section on CHANNEL PACKAGES). When you are checking an installation, you can specify which packages the subscriber has ordered and your CLI-1450 will verify that the channels are correctly installed. Scrambled If the channel is scrambled, select YES here so that accurate measurements can be made.
IMPORTANT: CLI-1450 supports several scrambling formats including the following: Horizontal Sync Suppression Vertical Sync Suppression Positive Trap Audio Offset (TV and DUAL type only) This is the offset between the video and audio carriers in MHz. Audio Offset 2 (DUAL type only) This is the offset between the video and second audio carriers in MHz. When you are finished editing the channel, press the soft key to return to the channel list.
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How to configure a digital carrier
1. From the Configure - Edit Channel Plan screen (page 1-29), highlight the channel that you wish to configure as digital, or select an unused channel. Press to bring up the Configure - Edit Channel screen. Highlight TYPE, choose SNGL and press . Highlight Carrier and press . Select a digital carrier (QAM, QPSK, QPR, CAP-16) and press . Highlight Frequency, press . Type in a value for Center Frequency and press . Highlight Measurement BW (MHz), press . Type in a value for the bandwidth and press . Highlight channel number, press . Type in a value for the channel number and press . Press the return softkey.
2. 3. 4.
5.
6.
7.
8.
Select Tilt Channels
From the Channel Plan screen, highlight SELECT TILT CHANNELS and press to specify carriers to measure on the TILT screen. A list of all enabled channels in the current plan appears.
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Up to six channels can be selected. To select a channel, use the up or down arrow to highlight the desired channel in the list, then press the soft key. A check mark appears in the left-hand column of the list indicating that this is now a TILT channel. Also, the channel number appears in one of the six boxes above the list. Press the a second time to deselect the TILT channel.
Select Channel Packages
From the Configure- Channel Plan screen (page 1-26), choose CHANNEL PACKAGES. Press to bring up the Channel Packages screen listing all available packages. These are the packages that will be available when you edit a channel. You can select from one of these packages for each channel plan.
To enable a package, press the left softkey. A check mark will appear to the left. To disable, press the left softkey again. The check mark will disappear. To edit the name, highlight the package and press ENTER . Use the Edit box to change the name. To complete, press ENTER again. IMPORTANT: IMPORTANT The number in the right-hand column of the package list indicates how many channels are currently using the package. When you disable a package, all channels using that package default to NONE (no package).
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Copy Remote Plan
Once a plan has been created in one unit, it can be copied to another similar unit (Example: CLI-1450 to CLI-1450). Connect the two units with the cloning cable. Set the baud rates for the two units equal. On the host unit's Configure - Channel Plan screen (page 1-25), select COPY REMOTE PLAN and press the OK softkey. The channel plan will be copied to the host.
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MODEL CLI-1450
2
INTRODUCTION LEAKAGE
Using the CLI-1450
The best way to learn about the CLI-1450 is to use it. Section 2 discusses the individual measurements available with the CLI-1450. Each measurement mode discussion includes detailed descriptions on how to perform the measurement as well as operating controls and indicators.
The CLI-1450 has two sub-modes of operation that detect and measure RF leakage: the Measure mode and the Find and Fix mode. The Measure mode is used to obtain the most accurate leakage measurements. The Find and Fix mode is optimized for locating the source of RF leaks. See the Searching for a Leak section (p. 2-5) for a complete description of the Find and Fix mode. To detect and measure RF leakage, press the SHIFT + key or
choose the icon from the NAVIGATOR screen. The LEAKAGE screen will default to the last sub-mode entered. If the CLI-1450 defaults to the Find and Fix mode, press the Measure mode. soft key to the
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You can read the leakage measurement numerically and on an analog meter. The units in which leakage is being measured appears directly below the meter.
Note You can select the units you want to measure leakage in when you configure your CLI-1450 (see LEAKAGE UNITS in the Leakage Configuration section). The frequency being monitored appears in the upper right-hand portion of the screen. Note You can specify the frequency of the carrier you want to monitor when you configure your unit (see MEASUREMENT FREQUENCY in the Leakage Configuration section). ANNUNCIATORS Annunciators appear in the area below the measurement frequency to alert you of the following conditions: Alarm This icon flashes when the alarm has triggered. Tag Detected If you are using the LST 1700 with tagger activated or the optional LT1000 Leakage Tagger, this icon appears when your CLI-1450 has detected the tag signal. This is an indication that the source of the leak originates from the plant you are testing. 2-2
MEASUREMENT PEAK The peak leakage value is indicated on the analog meter as a solid line. It also appears numerically as shown below:
The peak value is reset periodically. You can specify how quickly you want it to reset (see PEAK HOLD RESET PERIOD in the Leakage Configuration section). Tip You can manually reset the peak value at any time by pressing the SHIFT + keys. ADJUSTING THE ALARM VOLUME An audible sound is produced when the alarm is triggered. You can raise or lower the volume of the alarm by pressing the left and right arrows. There is a bar meter in the lower right-hand portion of the display to help you set the volume. You can mute the alarm by pressing the key. The alarm will remain muted for a period of time. You can adjust the length of this time (see ALARM MUTE TIME-OUT in the Leakage Configuration section). Note You can adjust the threshold and specify the conditions at which the alarm is triggered when you configure your unit (see the Leakage Configuration section). SELECTING THE ANTENNA TYPE You can use your CLI-1450 with several different types of antennas. For accurate measurements, you should be sure that you have selected the correct type for the antenna you are currently using. Press the soft key to sequence through the available antenna types. The type you have selected is represented in the upper portion of the screen by one of the following icons: Monopole Dipole (HD-1) Vehicle Mount (VMA-3) Custom 2-3
Note The characteristics for each type of antenna are programmable. Be sure that you have enabled all the antenna types that you want to use. soft key is only available if there is more than one enabled The type. (see EDIT ANTENNA TYPES in the Leakage Configuration section). Note The antenna selection is only useful for field strength measurements. If the measurement units you have selected result in an absolute measurement, the soft key will not be available.
ENTERING THE LEAKAGE DISTANCE If you find a leak in an inaccessible area, you can enter the estimated distance from the leak and your CLI-1450 will calculate what the equivalent field strength would be at the reference distance. These measurements are adequate for grading leaks you have found and prioritizing your repair schedule based on leak severity. You should, however, always perform regulation compliance measurements at the required reference distance. Important The most accurate and repeatable measurements are made using a dipole antenna located at the required reference distance. This is . the only method recommended by WWG for making regulation compliance measurements. The leakage distance appears in the upper right-hand corner of the display. To enter a different value, use the numeric keys followed by the key.
Note This feature is only useful when performing field strength measurements. If the measurement units you have selected result in an absolute measurement, the leakage distance will appear dimmed.
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COMPENSATION Compensation allows you to adjust your CLI-1450 to a calibrated leak field (see Appendix D). Press the soft key to adjust compensation. A new set of soft keys and soft keys to increment and decrewill appear. Use the ment the compensation value. You can find the compensation value in the upper right-hand portion of the screen directly below the measurement distance. Press the finished. Tip You can quickly clear out the compensation value by pressing the SHIFT + keys. Important Your CLI-1450 stores a separate compensation value for each antenna type. The value automatically goes into effect when you select the antenna. If you are using a calibrated leak field, be sure to make the adjustment for each type of antenna that you want to use. Note Compensation is only useful when performing field strength measurements. If the measurement units you have selected result in an absolute measurement, the soft key will not be available. soft key when you have
SEARCHING FOR A LEAK The Find and Fix mode is the ideal mode for locating leaks. The Find and Fix mode detects and displays leakage measurements; however, the leakage measurement is not as accurate as the Measure mode. The leakage measurement value should only be used to locate the source of a leak. To enter the Find and Fix mode from the Measure mode, press the soft key.
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The Find and Fix mode assists the operator in locating the leakage source through numeric and audible alarm indicators. As your distance from the leakage point increases or decreases, the numeric indicator on the bottom-right of the screen changes to reflect the leakage level. The graph scale on the left side of the screen is controlled by the peak value, and displays the current leakage level in relation to the peak value. When the leakage level meets or exceeds the alarm threshold, an audible alarm is triggered. The alarm rate will increase as you move closer to the leakage source. The Find and Fix mode uses the antenna type, leakage distance, and compensation features established in the Measure mode. When you want to change the parameters of these features or obtain a more accurate measurement of the leak, press the the Measure mode. softfkey to return to
Hint Reflections can sometimes increase or decrease received strength. Be sure to move the receiving antenna toward or away from the suspected source to obtain the maximum signal reading. MEASUREMENT HOLD You can freeze the leakage measurement at any time by pressing the SHIFT + keys. Notice that the mode icon in the upper left-hand portion of the screen flashes when the measurement is on hold. Press the SHIFT + keys again to release the hold. The measurement is not retained when another mode is selected or the CLI-1450 is shut off. 2-6
PRINTING THE SCREEN You can print the entire screen at any time by pressing the SHIFT + keys. A bar graph appears indicating the status of the printout. WARNING INDICATORS If the current measurement is inaccurate due to an out-of-range condition or a hardware failure, your CLI-1450 warns you by displaying one of the following warning indicators: Over-range The leakage level is above the measurement range of the instrument. Under-range The leakage level is below the measurement range of the instrument. Error A hardware problem exists. If this condition persists, the unit may need repair. Find and Fix Reminds the operator that the leakage measurement obtained in the Find and Fix mode is not as accurate as the Measure mode. Note The battery level is not monitored when in LEAKAGE mode. Note The Shutoff Time-out feature is disabled during LEAKAGE mode.
INSTALLATION
The INSTALLATION mode allows you to easily check the channels that you have just installed and verify that they are within limits. If you have configured channel packages, you can tell your CLI-1450 which packages the subscriber has ordered and it will display only those channels. 2-7
Press the
key to select the INSTALLATION mode or choose
the icon from the NAVIGATOR. Your CLI-1450 will begin measuring all the enabled channels in the plan. A bar graph indicates the percentage of channels measured. When your CLI-1450 has finished, you can view the results and verify that all channels are within limits. SELECTING CHANNEL PACKAGES If you have configured channel packages, a list of available packages will appear. From this list, you can select the packages that the subscriber has ordered. The number to the right of the package name tells you how many channels are included in each package. Use the up or down arrows to highlight a package and then press the soft key to select it. A check mark appears in the left-hand column of the list indicating that the package is selected. If the highlighted package soft key deselects it. is already selected, pressing the Tip Select "ALL CHANNELS" if you want to include all the enabled channels in the plan. Press the soft key or when you have finished. Now your CLI-1450 will only evaluate the channels from the packages that you have selected. Tip You can return to this screen at any time to change your package selection by pressing the soft key. SELECTING THE TEST POINT The next thing you should do is tell your CLI-1450 at which test point you are located. This determines which set of limits are used. Press soft key to sequence through the available test points. The the test point that you have selected is represented in the upper portion of the screen by one of the following icons:
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Subscriber Drop Ground Block Tap User Defined Note Be sure that you have enabled all of the test points that you are soft key is only available if there is more interested in using. The than one enabled test point. (see EDIT TEST POINTS). Important Only the limits that are enabled in the selected test point are checked (see EDIT TEST POINTS). INSTALLATION RESULTS SUMMARY This is the overall limit check summary for all channels in the packages that you have selected. You may have to scroll down the list to see all the limits results.
To quickly determine the status of the overall limit check, look at the PASS/FAIL indicator located in the upper portion of the screen. This indicates FAIL if any channel is not within the required limits. For each limit, the worst case actual value is displayed along with a pass/ fail status.
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Note Only the limits that are enabled in the selected test point appear on this screen. If there are no enabled test points, this screen will not be available. You can however, view the CHANNEL LIST and CHANNEL MEASUREMENT screens described below. THE CHANNEL LIST Press the Tip In addition to using the and keys, you can also use the left and right arrows to sequence through the results screens. The channel list provides essential information about each channel. soft key or to sequence to the channel list screen.
In the list you will find the channel number in the first column followed by the label. The level of the video carrier is in the next column. The package in which the channel is contained is displayed in the fourth column. Finally, the overall limits pass/fail result for the channel is found in the last column.
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THE PASS/FAIL INDICATOR Use the PASS/FAIL indicator located directly above the channel list to quickly determine whether the highlighted channel has passed the limits check. If the channel failed, you can identify the reason(s) for the failure by looking at the symbols that appear in this indicator.
Adjacent Channel Failures lower adjacent channel level upper adjacent channel level both upper and lower adjacent channel levels Video Level Failures video level too high video level too low DVA Failures DVA too high DVA too low
CHANNEL MEASUREMENT Press the soft key or ment screen. to sequence to the channel measure-
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This screen displays video and audio carrier level measurements along with the DVA for the selected channel. Use the up or down arrows to select the previous or next channel in the list. PRINTING AN INSTALLATION REPORT Press the SHIFT + keys to print a comprehensive report of the installation results. A bar graph appears indicating the status of the printout. The report lists level measurements for all the channels that you installed and indicates out-of-limit conditions with an overall PASS/FAIL conclusion. Space is provided for you to fill in subscriber information. You can attach the report to your work order or file it for future reference. STORING INSTALLATIO