Text preview for : 867b_863 User Manual.pdf part of Fluke 867b/863 Fluke 867 & 863 Manual
Back to : 867b_863 User Manual.pdf | Home
®
867B/863
Graphical Multimeter
Users Manual
4822 872 00894 November 1997 , Rev. 3, 10/98
© 1997, 1998 Fluke Corporation. All rights reserved. Printed in the Netherlands. All product names are trademarks of their respective companies.
LIMITED WARRANTY & LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and begins on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke's opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without interruption. Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another country. Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period. To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid (FOB Destination), to the nearest Fluke authorized service center. Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping Point). THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER THEORY. Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision. Fluke Corporation, P.O. Box 9090, Everett, WA 98206-9090 USA or Fluke Europe B.V., P.O. Box 1186, 5602 B.D., Eindhoven, The Netherlands
SERVICE CENTERS
To locate an authorized service center, visit us on the World Wide Web: http://www.fluke.com or call Fluke using any of the phone numbers listed below: +1-800-443-5853 in U.S.A. and Canada +31-402-678-200 in Europe +1-425-356-5500 from other countries
Table of Contents
Chapter 1
Title
Page
A Quick Tour .................................................................................................... 1-1 Your Graphical Multimeter................................................................................. About This Manual............................................................................................. Combo Mode ..................................................................................................... Meter Mode ...................................................................................................... View Mode ......................................................................................................... Trend Mode ....................................................................................................... Auto Diode Test Mode....................................................................................... Logic Test Mode ................................................................................................ Component Test Mode ...................................................................................... Sleep Mode........................................................................................................ 1-1 1-8 1-9 1-9 1-9 1-9 1-10 1-10 1-10 1-10
2
Making Measurements .................................................................................... 2-1 Introduction........................................................................................................ 2-1 Measuring AC Volts........................................................................................... 2-4 i
867B/863
Users Manual
Measuring DC Volts ........................................................................................... Measuring DC Millivolts...................................................................................... Measuring Ohms, Continuity, and Conductance................................................ Testing Diodes and Measuring Capacitance ..................................................... Measuring AC and DC Amps ............................................................................. Measuring AC and DC Milliamps and Microamps.............................................. Using Component Test ...................................................................................... Testing for Logic Activity .................................................................................... Measuring Frequency ........................................................................................ 3 Introduction ........................................................................................................ Battery Considerations....................................................................................... Display Blanking (Sleep Mode) .......................................................................... Using the ............................................................................................................ Backlight (Model 867B) ...................................................................................... Adjusting Contrast.............................................................................................. General Features ............................................................................................... Understanding Display Features........................................................................ Measurement Connections ................................................................................ 4 Introduction ........................................................................................................ Using Display Mode Softkeys ............................................................................ Using Frequency Softkeys ................................................................................. Save/Print Softkeys............................................................................................ ii
2-6 2-8 2-9 2-11 2-13 2-15 2-17 2-20 2-22 3-1 3-1 3-1 3-2 3-2 3-2 3-2 3-7 3-10 4-1 4-1 4-2 4-3
Some General Descriptions ............................................................................ 3-1
Using the Hardkeys.......................................................................................... 4-1
Contents (continued)
Min Max Softkeys .............................................................................................. 4-4 Range Softkeys ................................................................................................. 4-5 Touch Hold ........................................................................................................ 4-6 5 Using View and Trend Display Modes........................................................... 5-1 Introduction........................................................................................................ View Display Mode Basics ................................................................................ Using View Mode Softkeys................................................................................ Setting Up the Time Base.................................................................................. Setting Up the Trigger ....................................................................................... Choosing the Acquisition Type .......................................................................... Trend Display Mode Basics............................................................................... Using Trend Mode Softkeys .............................................................................. 6 Introduction........................................................................................................ Using the Save/Print Softkeys ........................................................................... Saving Screen and Configuration...................................................................... Recalling Screen or Configuration..................................................................... Previewing Screen or Configuration.................................................................................. Saving the Present Configuration...................................................................... Printing............................................................................................................... Changing the Configuration ............................................................................... 7 5-1 5-1 5-2 5-3 5-4 5-7 5-10 5-10 6-1 6-1 6-3 6-4 6-4 6-5 6-6 6-8
Using Save, Recall, Print, and Set Up............................................................ 6-1
User Maintenance............................................................................................ 7-1 Introduction........................................................................................................ 7-1
867B/863
Users Manual
Cleaning ............................................................................................................. Testing the Fuses............................................................................................... Replacing the Batteries ...................................................................................... Replacing the 440 mA Fuses ............................................................................. Replacing the 11A (High Energy) Fuse.............................................................. Reassembly ....................................................................................................... Operational Test................................................................................................. Self Test ............................................................................................................. If Your GMM Does Not Work ............................................................................. 8
7-1 7-1 7-2 7-2 7-2 7-3 7-5 7-5 7-8
Specifications................................................................................................... 8-1 General Specifications ....................................................................................... 8-1
iv
List of Tables
Table 1-1. 1-2. 1-3. 2-1. 2-2. 3-1. 3-2. 6-1.
Title Introducing Your Graphical Multimeter .................................................................. A Practice Session................................................................................................. Functions and Display Modes................................................................................ Common Combo/Meter Mode Softkeys................................................................. Component Testing (Capacitance) ........................................................................ General Features ................................................................................................... Upper Status Line .................................................................................................. Set Up Selections ..................................................................................................
Page 1-2 1-6 1-11 2-2 2-18 3-4 3-9 6-9
v
867B/863
Users Manual
vi
List of Figures
Figure 1-1. 1-2. 1-3. 1-4. 1-5. 1-6. 1-7. 1-8. 2-1. 2-2. 2-3. 2-4. 2-5. 2-6.
Title Graphical Multimeter Features............................................................................... RS232 and AC Power Connections....................................................................... Test Leads and Measurement Connections .......................................................... Using the Battery Eliminator .................................................................................. Volts and Amps Measurement Map....................................................................... Ohms, Conductance, Diode Test, Capacitance Map............................................. Logic Test, Component Test, and Set Up.............................................................. Hz Min Max, and Range Map ................................................................................ AC Volts Measurements ........................................................................................ DC Volts Measurements ........................................................................................ Millivolt Measurements .......................................................................................... Ohms, Continuity, and Conductance Measurements ............................................ Diode Test and Capacitance Measurements......................................................... Amps Measurements ............................................................................................. vii
Page 1-1 1-1 1-4 1-5 1-12 1-13 1-14 1-14 2-4 2-6 2-8 2-9 2-11 2-13
867B/863
Users Manual
2-7. 2-8. 2-9. 2-10. 2-11. 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 5-1. 5-2. 5-3. 5-4. 6-1. 6-2. 7-1. 7-2. 7-3.
Milliamp and Microamp Measurements.................................................................. Component Testing ................................................................................................ Component Test Patterns....................................................................................... LOGIC Testing........................................................................................................ Frequency Measurements...................................................................................... General Features.................................................................................................... Input Connections Screen ...................................................................................... Display Features..................................................................................................... General Measurement Connections....................................................................... Amps Measurement Connections .......................................................................... Milliamp and Microamp Connections...................................................................... LOGIC Testing Connections................................................................................... Time Base Selection............................................................................................... Trigger Icons........................................................................................................... Setting Up the Trigger ............................................................................................ Viewable Time Divisions (Single Shot and Glitch Capture).................................... Freeze (Print/Save) Softkey Map ........................................................................... PC and Printer Connections ................................................................................... Replacing the 11A (High Energy) Fuse .................................................................. Replacing the Batteries .......................................................................................... Replacing the 440 mA Fuse ...................................................................................
2-15 2-17 2-19 2-20 2-22 3-3 3-7 3-8 3-10 3-10 3-11 3-11 5-3 5-5 5-6 5-9 6-2 6-7 7-4 7-6 7-7
viii
m
Safety
· ·
Use caution when working above 60V dc or 30V ac rms. Such voltages pose a shock hazard. When using the probes, keep your fingers away from probe contacts. Keep your fingers behind the finger guards on the probes. Place test leads in proper input terminals. Disconnect the live test lead before disconnecting the common test lead. When measuring current, turn the power off to the circuit being tested before connecting the GMM test tool in that circuit. Check GMM test tool fuses before measuring current transformer secondary or motor winding current. (See Testing the Fuses in the User Maintenance chapter.) An open fuse may allow high voltage buildup, which is potentially hazardous. Use clamp-on probes (current clamps) when measuring currents exceeding 10A.
In this manual, the word "WARNING" identifies conditions and actions that pose hazard(s) to the user. The word "CAUTION" refers to conditions and/or actions that can damage the instrument. Use of the instrument in a manner not specified may impair safety. Read the following safety information carefully before attempting to operate or service the instrument. · · Avoid working alone. Disconnect the power and discharge highvoltage capacitors before testing in Ohms Continuity, Diode, Capacitance, and COMPONENT Test. Inspect the test leads for damaged insulation or exposed metal. Check test lead continuity. Damaged leads should be replaced. Do not use the GMM if it looks damaged. Select the proper function and range for your measurement.
· · ·
·
·
· ·
·
ix
867B/863
Users Manual
m WARNING m
Hazardous voltages are present on the External Trigger input terminal and any attached probe when the GMM is measuring voltages greater than 30V rms or 60V dc. Replacing Fuses The following fuses should be used: · · F 440 mA, 1000V, Minimum Interrupt Rating 10,000A. F 11A, 1000V, Minimum Interrupt Rating 17,000A.
$ WARNING risk of electric shock. m CAUTION see explanation in manual. s
Equipment protected throughout by DOUBLE INSULATION or REINFORCED INSULATION.
m Overload Protection
Voltage or Current Input: 1000V Surge Protection: 8 kV Maximum Voltage Isolation to Ground: 1000V Protection Levels: per IEC 1010-1; 1000V CAT III (fixed distribution-level installations which can experience peak voltage transients up to 8000V.) Protection Class: II
Warning
Use of fuses with voltage ratings below 1000V reduces protection. Do not replace the 440 mA 1000V fuse with a 4/10A 600V fuse.
s
x
Chapter 1
A Quick Tour
Note The NiCd battery pack must be fully charged before using the 867B. See Chapter 3.
Your Graphical Multimeter
B
G
C
1 2 HZ 3 4 5
F
FREEZE DISPLAY MODE SAVE PRINT MIN MAX RANGE
OFF
SET UP
D
V
TOUCH HOLD
A
WAKE UP
COMPONENT TEST
V mV
Hi Z
LOGIC
mA A
A
A
mA/ A
EXT TRIG
COM
V
E
rita0091.eps
Figure 1-1. Graphical Multimeter Features
rita0092.eps
Figure 1-2. RS232 and AC Power Connections
1-1
867B/863
Users Manual
Table 1-1. Introducing Your Graphical Multimeter ITEM A SYMBOL DESCRIPTION TURN THE GMM ON BY ROTATING THE SELECTOR TO ANY FUNCTION. Turn the rotary selector to the AC Volts (v) position. The input connections screen appears for a few seconds, then the screen sets up for this function, and you are ready to begin. You can toggle the backlight power level (Model 867B only) by pressing W. Also note that the screen goes dark if you do not change any controls for about 20 minutes and the GMM is on battery power; pressing W wakes up the screen (all models.) THE SCREEN. In AC Volts, the initial screen presents a primary display of large digits, a secondary display of smaller digits, and a graphical window showing either a waveform or an analog NeedleGraphTM representation of the primary display. In addition, the upper screen line displays status information. The bottom screen line (immediately above the softkey labels) shows the display mode, range, and other information. For example, "Combo" appears on this line if a waveform appears in the graphical window: the GMM is in Combo Mode. THE SOFTKEYS. Most control settings (selector change or key press) change the softkey labels along the bottom of the screen. These labels define the present uses for the five blue keys that are positioned immediately below the screen. Together, the labels and the keys form a set of Softkeys. These changing softkey definitions allow direct access to a wealth of GMM capabilities. Refer to Figures 1-6, 1-7, and 1-8 at the end of this chapter for a roadmap to softkey use.
j
W
Combo Meter View Trend
B
C
1 2 3 4 5
1-2
A Quick Tour Your Graphical Multimeter
Table 1-1. Introducing Your Graphical Multimeter (cont) ITEM D SYMBOL DESCRIPTION THE HARDKEYS. Hardkeys appear immediately below the softkeys. Hardkeys perform the same operations in all functions. Pressing W wakes up the screen from Sleep Mode (all models) and toggles the backlight power level on Model 867B. Although hardkeys can generally be pressed at any time, certain feature combinations are not allowed. The GMM test tool rejects any hardkey press that is not allowed; a long beep sounds. Chapter 4 explains each hardkey in detail.
1
d F P M r H
V C X A a
E
MEASUREMENT CONNECTIONS. Review the input connection scheme now only for familiarization: no actual connections are necessary during the Quick Tour. Volts, Ohms, Continuity, Conductance, Diode Test, Capacitance, and Component Test measurements use V for the Red lead. Amps measurements use A for the Red lead. mAµA measurements use a for the Red lead. LOGIC Test measurements use X for the Red lead. All functions use C for the Black lead. Refer to Figure 1-3 for TL70A test lead connection views. LINE POWER OR BATTERY POWER. You can power the GMM with batteries or from ac line power through the Battery Eliminator. New alkaline (AA) cells provide a minimum of 4 hours operation. A fully charged BP7217 NiCd battery pack typically provides a minimum of 8 hours operation. The battery eliminator recharges the NiCd battery pack on Model 867B. Refer to Figure 1-4. SERIAL PC OR PRINTER CONNECTION. Your GMM can use an optional optical serial interface cable to communicate with a PC or printer. Refer to Chapter 6.
F
B
G
RS232
1-3
867B/863
Users Manual
TL70A Test Leads
rita0740.eps
Figure 1-3. Test Leads and Measurement Connections
1-4
A Quick Tour Your Graphical Multimeter
1
Europe PN 942602
AU NZ PN 944595
UK PN 942607
US PN 942599 JP PN 942610
rita0770.eps
Figure 1-4. Using the Battery Eliminator
1-5
867B/863
Users Manual
Table 1-2. A Practice Session STEP 1 ACTION DESCRIPTION CHANGE THE DISPLAY MODE With the GMM still in AC Volts, press first d, then 3 to change the display mode. The screen changes to the View Mode, where the entire screen is used for displaying a waveform. You can repeat this procedure to select any of the display modes available in AC Volts (Combo, Meter, View, and Trend.) Refer to Table 1-3 for an overview of display modes available in each function. Examples of all display modes (Combo, Meter, View, Trend, Logic Test, Auto Diode Test, Component Test, and Sleep) follow this table. Along with the flexibility provided by multiple softkey definitions, display modes increase the versatility of your GMM considerably. Many operations activated in one display mode are retained when you select a new mode. For example, "Rel", "dB", Min Max, range, and frequency measurement type are retained. 2
d
J
1
CHANGE THE FUNCTION Rotate the selector to DC Volts (E). Observe that the display shifts back to Combo Display Mode. (This is the default mode, as established on the screen you see when you turn the selector to SET UP.) USE THE SOFTKEYS With DC Volts and Combo Mode still active, you can use the DC Volts Softkeys. For example, press 1 to activate "Rel": difference readings only are now displayed. Press 1 again to deactivate "Rel". Explore all five softkeys in this fashion. Press a key first to activate a selection (label highlighted) and second to disable the selection.
3
1-6
A Quick Tour Your Graphical Multimeter
Table 1-2. A Practice Session (cont) STEP 4 ACTION DESCRIPTION CHANGE THE MEASUREMENT RANGE
1
r
Press r to access the Range Softkeys, then press 2 to select a higher range (and activate "Manual" ranging.) Press 1 to switch back to "Auto" ranging, then press r to return to the DC Volts Softkeys. 5
M
ENABLE MIN MAX READINGS Press M to start displaying the maximum ("Max"), average ("Avg"), and minimum ("Min") readings. Press M again to deactivate Min Max.
6
H
ENABLE TOUCH HOLD Press H to begin holding the last valid reading in the display, even if the test leads are withdrawn from the measurement point. h appears in the upper status line. Press H again to stop Touch Hold
7
F
CHANGE THE TYPE OF FREQUENCY DISPLAY Press F to access the Frequency Softkeys. The frequency reading (which was in the secondary display) and DC Volts reading (which was in the primary display) are swapped. The softkeys allow you to select different types of frequency measurements (Hz, Duty Cycle, Pulse Width, or Period). Press 4 to select "Period", then press F again to return to the DC Volts Softkeys. Primary and secondary displays swap again, and the change to "Period" frequency measurement continues in the secondary display.
1-7
867B/863
Users Manual
Table 1-2. A Practice Session (cont) STEP 8 ACTION DESCRIPTION LOOK AT THE SAVE/PRINT SOFTKEYS Press P to access the Save/Print Softkeys. You can now use the softkeys to exercise various save, recall, and print features. Refer to Chapter 6 for more information. (Waveform save/recall is not available on Model 863.)
P
9
o
TURN THE GMM OFF · · · · ·
About This Manual
This Quick Tour has introduced you to all the features necessary to use your GMM. If you are comfortable with this level of information, continue on to Chapter 2 for specific information keyed to each type of measurement. If you want more information about any of the features, refer to Chapters 3 through 8, as follows: · · 1-8 Chapter 3: General descriptions of the GMM controls, screen, and input connections. Chapter 4: Complete instructions for using the hardkeys (d F P M r H).
Chapter 5: View Mode and Trend Mode, in detail. Chapter 6: Save, Recall, and Print using P and Configuration Changes using SET UP. Chapter 7. User Maintenance (battery and fuse replacement, etc.) Chapter 8: Specifications Index
A Quick Tour Combo Mode
1
Combo Mode
Combo Meter View Trend Exit Combo Mode presents both digital and graphical views of the measurement and can be used in VAC, VDC, mV DC, Amps, and mAµA functions. Combo is the default mode in these functions.
View Mode
Combo Meter View Trend Exit View Mode displays a full-screen waveform. It is available in VAC, VDC, mV DC, Amps, and mAµA functions.
Meter Mode
Combo Meter View Trend Exit Meter Mode presents both a digital reading and an analog position indication of the measurement. You can select Meter in VAC, VDC, mV DC, Ohms, Amps, and mAµA functions; you can also set Meter on the SET UP screen as the default mode in these functions. Meter is the only mode available in Diode and Capacitance Test.
Trend Mode
Combo Meter View Trend Exit, Trend Mode presents a digital reading of the measurement and plots that reading over time. It is available in VAC, VDC, mV DC, Ohms, Amps, and mAµA functions.
1-9
867B/863
Users Manual
Auto Diode Test Mode
Meter Exit Auto Diode Test presents a DC voltage reading and a symbol representing the state of the diode (forward, reverse, open, short, unknown.)
Component Test Mode
Comp. Test Exit Component Test displays a unique pattern representing the characteristics of the in-circuit component being tested. This signature can resemble a straight line for purely resistive components or an ellipsoid for frequency-sensitive components.
Logic Test Mode
Logic Exit Logic Test shows icons representing high and/or low logic state along with frequency and voltage readings of logic activity.
Sleep Mode
W
restores the screen. Sleep Mode comes on automatically during battery operation if you do not press a key or turn the selector for approximately 20 minutes.
1-10
A Quick Tour Sleep Mode
Table 1-3. Functions and Display Modes FUNCTION
1
v
Combo Meter View Trend Auto Diode · · · ·
E
· · · ·
e
· · · ·
R
·
D
·
I i
· · · · · · ·
Lc
· ·
·
Logic Comp.Test
· ·
1-11
867B/863
Users Manual
Combo
Meter
View
Trend
Exit
Enable RS232 Time Longer Time Shorter
DISPLAY MODE
Restart Trend
Rel
Peak Hold
rms Average
dB 150
Full Auto High Low
Average Rel Peak Hold DC & AC rms dB 150 Full Auto Full Auto Rel Peak Hold DC & AC rms dB 150
Sampled
Exit
Hi Z
Arm Rel Peak Hold Peak Hold DC & AC rms rms Average dB 150 dB 150 AC DC AC DC Arm Exit Exit
Rel
Rel
Peak Hold Peak Hold
DC & AC rms rms Average
mA 1 uA 100 mA 1 uA 100
AC DC AC DC
Internal External
Exit
Rel
Slower
Faster
Exit
rita0330.eps
Figure 1-5. Volts and Amps Measurement Map
1-12
A Quick Tour Sleep Mode
1
Meter
Trend
Exit
DISPLAY MODE
Rel nS
Enable RS232 Time Longer Time Shorter Restart Trend
Rel nS
Auto Diode
Average
Sample
High Low
Normal Glitch
Exit
Rel
Auto Diode
Rel
rita0340.eps
Figure 1-6. Ohms, Conductance, Diode Test, Capacitance Map
1-13
867B/863
Users Manual
TTL
3V CMOS
5V CMOS
Duty Cycle
Pulse Width
Period
Exit
2 Hz
20 Hz
200 Hz
2 kHz
18.75 kHz
Min Max Off
Restart
Run Pause
Exit
Set Up
Self Test
Exit
Auto Manual
Wave Scale
Exit
rita0360.eps
Figure 1-8. Hz Min Max, and Range Map
Next Item
Restore All
Save Set Up
rita0350.eps
Figure 1-7. LOGIC Test, Component Test, Set Up
1-14
Chapter 2
Making Measurements
Note Recharge the NiCd battery pack before using the 867B. See Battery Considerations in Chapter 3.
of the display. These labels define the present uses for the five blue keys that are positioned immediately below the display. In Combo and Meter display modes, some labels are used with several different selector positions; see Table 2-1 for descriptions of these common labels. Other labels are unique for the selector position; these labels are defined in this chapter as needed. View and TrendGraphTM softkey labels are common for all functions that can use these modes; refer to Chapter 5 for a full discussion.
Introduction
This chapter shows overall procedures for making measurements in any of the rotary selector positions. Necessary input connections are shown. Softkeys used with each of the display modes available for the selected function are also shown.
Using the Selector
To begin using the GMMTM, turn the selector to any of the indicated functions. Softkey labels momentarily identify the display modes available for this function, then proceed to list the softkeys available with this function.
Hardkeys
Although hardkeys can generally be pressed at any time, certain feature combinations are not allowed. The GMM rejects any hardkey press that is not allowed and tells you so with a long beep. 2-1
Softkeys
Any selector setting or hardkey press provides you with a unique set of softkey labels along the bottom
867B/863
Users Manual
Table 2-1. Common Combo/Meter Mode Softkeys KEY FUNCTION Rel Peak Hold rms Average DESCRIPTION Start relative readings in the primary display (REL is displayed). The relative reference (stored when "Rel" is selected) appears with the softkey. Peak Hold displays the highest and lowest peak values encountered in the present measurement function. These values replace either the secondary reading in Meter Mode or the graphical display in Combo Mode. Toggle between true "rms" ("rms" annunciator on in display) and "Average" (average responding, rms indicating - no annunciator) readings in any ac function. The rms/Average selection remains in effect until you change the selector position. The rms/Average settings made in one display mode are automatically made for other display modes in the same selector position. "Average" or "rms" can be set as the standard selection on the SET UP display. In VDC or mV DC, use the full display to show the numerical "DC" and "AC rms" values. Press 3 again to return to the original display. Show dBm values in the primary display. The "dB" value shown above this softkey identifies the resistance used in computing dBm; 600 is the standard value. You can change this value from the SET UP display. (Rotate the selector to SET UP, change the reference selection, then rotate the selector back to the original ac function.)
1 2 3
3 4
DC & AC rms dB
2-2
Making Measurements Introduction
Table 2-1. Common Combo/Meter Mode Softkeys (cont) KEY FUNCTION DESCRIPTION
2
5 5 5 4
Full Auto
Hi Z
The GMM automatically selects range, trigger level, and time base (in VAC and VDC for an optimum display. If "Manual" is selected for Range in the SET UP screen, "Full Auto" does not come on. Selecting "Manual" from the Range Softkeys deselects "Full Auto". Enter the high input impedance mode in mV DC. "Hi-Z" appears at the top of the display. Press again to return to "mV". Activating "DC & AC rms" automatically cancels "Hi-Z". You cannot use Peak Hold with HiZ. Toggle between "DC" and "AC" amps or mAµA measurements. "DC" is the standard configuration. Activate the beeper for continuity or Manual Diode testing; a beep then sounds each time the voltage drop passes below 0.7V (Continuity) or the logic activity indicator flashes (LOGIC Testing). A short circuit results in a continuous tone. If the reading goes above 30 volts, a possibly dangerous voltage exists on the inputs but is not displayed. Therefore, the safety indicator (l) lights.
AC DC
/
2-3
867B/863
Users Manual
Measuring AC Volts 6 Turn the Selector to Volts AC. Display mode
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection.
Circuit
4
7 8 9
Connect the test leads as shown. Use the AC Volts Softkeys as discussed below. All hardkeys are available in Volts AC.
V
WAKE UP
TOUCH HOLD
1
2
A mA /A EXT TRIG COM V
At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode.
Red
rita0550.eps
Figure 2-1. AC Volts Measurements
2-4
Making Measurements Measuring AC Volts
2
Using the AC Volts Softkeys
Combo or Meter Mode: refer to Table 2-1.
Rel Peak Hold rms Average dB 600 Full Auto
View Mode: refer to Chapter 5.
Time > Base > Trigger Single > Shot Glitch > Capture Full Auto
Trend Mode: refer to Chapter 5.
Enable RS232 Time Longer Time Shorter Trend > Type Restart Trend
2-5
867B/863
Users Manual
Measuring DC Volts 6 Turn the Selector to Volts DC. Display mode
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection.
Circuit
4
TOUCH HOLD
WAKE UP
7 8 9
Connect the test leads as shown. Use the DC Volts Softkeys as discussed below. All hardkeys are available in Volts DC.
V
1
2
A
mA/ A EXT TRIG COM
V
At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode.
Red
rita0560.eps
Figure 2-2. DC Volts Measurements
2-6
Making Measurements Measuring DC Volts
2
Using the DC Volts or mV DC Softkeys
Combo or Meter Mode: refer to Table 2-1.
Rel Peak Hold DC & AC rms dB 600 Full Auto
View Mode: refer to Chapter 5.
Time > Base > Trigger Single > Shot Glitch > Capture Full Auto
Trend Mode: refer to Chapter 5.
Enable RS232 Time Longer Time Shorter Trend > Type Restart Trend
2-7
867B/863
Users Manual
Measuring DC Millivolts 6 Turn the Selector to mV DC. Display mode
softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection.
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
4
Circuit
7 8 9
Connect the test leads as shown. Use the mV DC Softkeys as discussed above. All hardkeys are available in millivolts DC.
TOUCH HOLD
WAKE UP
1
mV
Hi Z
At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode.
2
A
mA/ A EXT TRIG COM
V
Red
rita0570.eps
Figure 2-3. DC Millivolt Measurements
2-8
Making Measurements Measuring Ohms, Continuity, and Conductance
2
Measuring Ohms, Continuity, and Conductance 6 Turn the Selector to Ohms. Softkeys for
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
Meter and Trend Modes appear momentarily. Wait briefly to accept Meter Mode, or press 4 to select Trend Mode.
4
TOUCH HOLD
WAKE UP
7 8 9
2
Connect the test leads as shown. Use the Ohms (Meter or Trend Mode) Softkeys as discussed below. F is not available in Ohms; all other hardkeys can be used.
1
A
mA/ A EXT TRIG COM
V
At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode.
Red
rita0580.eps
Figure 2-4. Ohms, Continuity, and Conductance Measurements
2-9
867B/863
Users Manual
Using the Ohms Meter Mode Softkeys
Rel / nS
2 (/) enables the Continuity beeper. The GMM beeps each time a low resistance continuity measurement is encountered. For example, beginning in the 300 range, the beeper goes on when the resistance passes below 32 and off when the resistance rises above 132. You can select a different range after activating the Continuity beeper; each range uses different beeper on and off points. For a list of these on and off points, see Continuity Specifications in Chapter 8 of this manual. 3 (nS) begins conductance (nanosiemens "nS") readings in the primary display. Measurement ranges are 300 nS and 3000 nS. (Megohm-only readings continue in the secondary display.) Press 3 again to return to ohms () primary readings (all ranges). Selecting conductance (nS) automatically cancels active Min Max, "Peak Hold", Touch Hold, Continuity, and "Rel, and resets the Trend plot. Frequency readings are not available in conductance or ohms.
2-10
Making Measurements Testing Diodes and Measuring Capacitance
2
Testing Diodes and Measuring Capacitance 6 Turn the Selector to Diode/Capacitance. The
GMM assumes Meter Mode.
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
4
7 8 9
Connect the test leads as shown. Use the Diode/Capacitance Softkeys as discussed below. "Rel" and "/" (Continuity) are not available in Auto Diode. H and F are not allowed in Diode Test.
TOUCH HOLD
WAKE UP
1
Pressing r is not allowed in Diode Test; a long beep sounds. r is allowed in Capacitance.
2
A
mA/ A EXT TRIG COM
V
Red
rita0590.eps
Figure 2-5. Diode Test and Capacitance Measurements
2-11
867B/863
Users Manual
Using the Auto Diode Softkeys
Auto Diode | &
Using the Manual Diode Softkeys
Rel / Auto Diode | &
4 toggles between AutoDiode and Manual Diode. When selected, Auto Diode is highlighted and one of the following icons is displayed: N k g u ? (short) (open) ( (unknown)
4 selects Manual Diode testing (Auto Diode not highlighted). Selecting Manual Diode initially sets "Rel" and "/" (Continuity) off. In Manual Diode test, voltage is developed across the components(s) by a test current (approximately 1 mA with the test leads shorted) from the meter. Voltage is read on a 0 to +3.000V range that can measure up to five silicon diode or transistor junctions in series. For a silicon diode, the typical forward voltage is about 0.6V. Voltages greater than 3.00V or open test leads produce an overload (OL) reading. If the digital reading is the same in both directions, the diode junction is probably shorted. If the display reads OL in both directions, the diode junction is probably open. To protect sensitive devices the open test lead voltage will not exceed 3.1V. Negative inputs (from an external power source) are not suppressed.
5 ( &) is highlighted for Diode Testing. Pressing this key toggles to Capacitance (|) and disables Diode Testing. "Rel" and "/" (Continuity) are not available in Auto Diode.
2-12
Making Measurements Measuring AC and DC Amps
2
Using the Capacitance Softkeys
Rel | &
5 (|&) toggles between Capacitance Measurement and Diode Testing.
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
Measuring AC and DC Amps 6 Turn the Selector to Amps. Display mode
softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection.
4
Circuit
TOUCH HOLD
WAKE UP
1
7 8 9
Connect the test leads as shown. Use the Amps Softkeys as discussed below. All hardkeys are available in Amps.
A
2
A
mA/ A EXT TRIG COM
V
At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode.
Red
rita0600.eps
Figure 2-6. Amps Measurements
2-13
867B/863
Users Manual
Using the Amps Softkeys
AC Amps (Combo/Meter Mode): refer to Table 2-1.
Rel Peak Hold rms Average dB 600 AC DC
DC Amps (Combo/Meter Mode): refer to Table 2-1.
Rel Peak Hold DC & AC rms dB 600 AC DC
View Mode (AC or DC Amps): refer to Chapter 5.
Time > Base > Single > Trigger Shot Glitch > Capture Full Auto
Trend Mode (AC or DC Amps): refer to Chapter 5.
Enable RS232 Time Longer Time Shorter Trend > Type Restart Trend
2-14
Making Measurements Measuring AC and DC Milliamps and Microamps
2
Measuring AC and DC Milliamps and Microamps 6 Turn the Selector to mAµA. Display mode
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection.
4
Circuit
TOUCH HOLD
WAKE UP
1
7 8 9
Connect the test leads as shown. Use the mAµA Softkeys as discussed below. All hardkeys are available in mAµA.
2
mA A
A
At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode.
mA/ A EXT TRIG COM
V
Red
rita0610.eps
Figure 2-7. Milliamp and Microamp Measurements
2-15
867B/863
Users Manual
Using the mAµA Softkeys
AC mAµA (Combo/Meter Mode): refer to Table 2-1.
Rel Peak Hold rms Average mA 1 µA 100 AC DC
4 (mA 1; µA 100) In Combo or Meter Mode, this softkey toggles between "mA" and "µA" measurements. ("mA" is the standard configuration.) Each toggle cancels Min Max, Touch Hold, "Peak Hold", and Rel and resets the Trend plot. "1" and "100" represent the shunt resistances used for mA and µA, respectively.
DC mAµA (Combo/Meter Mode): refer to Table 2-1.
Rel Peak Hold DC & AC rms mA 1 µA 100 AC DC
NOTE If measuring <3 mA, using 3000.0 µA range will give you better resolution.
The GMM autoranges in "mA" or "µA" (two ranges are available for each selection) but does not autorange between "mA" and "µA". If manual range is selected, "mA" assumes the 30 mA range, and "µA" assumes the 300 µA range. The µA ranges are not available on Model 863. F swaps the mA or µA in the primary display with the frequency reading in the secondary display. Subsequent changing between mA and µA or DC and AC swaps the primary and secondary displays back.
View Mode (AC or DC mAµA): refer to Chapter 5.
Time > Base > Single > Trigger Shot Glitch > Capture Full Auto
Trend Mode (AC or DC mAµA): refer to Chapter 5.
Enable RS232 Time Longer Time Shorter Trend > Type Restart Trend
2-16
Making Measurements Using Component Test
2
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
Using Component Test 6 Turn the Selector to COMPONENT TEST. 7 Connect the test leads as shown. 8 Use the COMPONENT TEST Softkeys as
discussed below.
4
9
TOUCH HOLD
WAKE UP
Since COMPONENT TEST uses its own display mode, only W, P, and H operate normally. Caution To avoid damage to the circuit, Component Test should be used only on unpowered circuits.
COMPONENT TEST
1
2
A
mA/ A EXT TRIG COM
V
Red
rita0630.eps
Figure 2-8. Component Test
2-17
867B/863
Users Manual
Using COMPONENT TEST Softkeys
2 Hz 20 Hz 200 Hz 2 kHz 18.75 kHz
and circuit diagnosis. Some sample signature patterns are shown on the following page. Press one of the softkeys to select the frequency of the stimulus signal. For components that do not change impedance with frequency (resistors, diodes, and transistors), the frequency selection is not critical for a meaningful display. For components that do change impedance with frequency (inductors and capacitors), an appropriate COMPONENT TEST frequency selection is necessary. Inductance greater than 8.5 mH can be displayed. Capacitance can be displayed according to the guidelines in Table 2-2.
Table 2-2. Component Test (Capacitance) Frequency 2 Hz 20 Hz 200 Hz 2 kHz 18.75 kHz Capacitance 0.72 µF to 72 µF 0.072 µF to 7.2 µF 7200 pF to 0.72 µF 720 pF to 0.072 µF 77 pF to 7700 pF
Use COMPONENT TEST to measure the characteristics of a passive component (in or out of circuit, no power applied). When you use the General Measurement Connection, the GMM provides an ac stimulus signal to the component and plots the voltage drop against the current measurement. The resulting pattern provides information about passive circuit conditions. Generally, resistors exhibit some form of straight or angled line. Diodes or transistors appear as straight lines with right-angle ends. Frequency-sensitive components (inductors, capacitors) portray some form of an ellipsoid pattern based on the currentvoltage phase shift dictated by the stimulus frequency and the inductance or capacitance. Combinations of these components exhibit hybrid patterns. Although the number of such COMPONENT TEST signatures can be limitless, you will become familiar with a few characteristic signature patterns that will greatly aid in component
2-18
Making Measurements Using Component Test
2
rita0800.eps
Figure 2-9. Component Test Patterns
2-19
867B/863
Users Manual
Testing for Logic Activity
(not available on Model 863)
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
4
Circuit
6 7 8 9
Turn the Selector to LOGIC. Connect the test leads as shown. Use the LOGIC Testing Softkeys as shown. The following hardkeys can be used:
TOUCH HOLD
WAKE UP
d P M
1
LOGIC
2
A
mA/ A EXT TRIG COM
V
For the logic activity indicator, [ represents a logic high, and ] represents a logic low. A horizontal bar represents an indeterminate condition (no high or low detected since the previous reading.) The logic indicator flashes at a 10 Hz rate for activity faster than 10 Hz or at the actual rate if activity is slower than 10 Hz. The actual logic frequency is shown in the primary display. Frequencies to 10 MHz and higher can be measured. DC Volts levels are shown in the secondary display.
rita0620.eps
Red
Figure 2-10. LOGIC Testing
2-20
Making Measurements Testing for Logic Activity
2
Using the Logic Test Softkeys
TTL 3V CMOS 5V CMOS /
1, 2, and 3 select the trigger point for the logic activity indicator and frequency reading. "5V CMOS" is the standard configuration. A new selection cancels the old selection. See Chapter 8 for threshold values. 4 (/) activates the beeper; a beep then sounds to indicate logic activity. The beeper is off in the standard configuration. If the reading goes above 30 volts, the safety indicator (l) lights.
2-21
867B/863
Users Manual
Measuring Frequency
You can measure low frequency signals (2 Hz to 2 MHz) with the procedure shown below. For higher frequency signals (to 10 MHz and above), use the Logic Test function.
6
3
1 2 3 FREEZE DISPLAY MODE HZ SAVE PRINT MIN MAX RANGE 4 5
4
Turn the Selector to any of the indicated positions. (Frequency can be measured in VAC, VDC, mV DC, A, and mAµA.) Connect the test leads as required for the selected measurement position.
7
1
V
WAKE UP
TOUCH HOLD
V mV
HiZ
8 9
Press F.
Use the Frequency Softkeys as discussed below.
A
A
mA A
V
2
mA/ A EXT TRIG COM
rita0640.eps
The frequency counter trigger levels are set to predetermined levels while the GMM is in the single trigger mode. In dual trigger mode, the frequency counter trigger levels are set initially (full auto) based on a percentage of the input signal. You can change both levels with the Trigger Softkeys in the view mode. Manually setting these levels may cause the frequency counter to be unstable or not count at all.
Figure 2-11. Frequency Measurements
2-22
Making Measurements Measuring Frequency
Either press the Full Auto softkey or manually adjust the trigger levels in view mode to obtain a stable frequency reading.
2
Frequency Operation
The frequency measurement type (Hz, duty cycle, pulse width, or period) normally appears in the secondary display. F swaps primary and secondary display readings and accesses the Frequency Softkeys. You can then select a new frequency type. Press F a second time to restore the selector function to the primary display and move the frequency reading back to the secondary display. Press F at any time to swap primary and secondary readings.
Using the Frequency Softkeys
x y Duty Cycle Pulse Width Period Exit
1 selects low side x or high side y pulse for frequency, period, duty cycle, and pulse-width measurements. Positive is the standard selection. 2 (Duty Cycle) selects duty cycle measurements for the pulse (negative going or positive going) selected with 1. 3 (Pulse Width) selects pulse-width measurements for the pulse (negative going or positive going) selected with 1. 4 (Period) selects period measurements of the full signal (negative going or positive going). 5 (Exit) returns to the Display Mode Softkeys.
2-23
867B/863
Users Manual
Frequency Considerations
F interacts with other features in several ways. Generally, features that are active in the selector function are retained when you press F. For example, active features in VAC, such as "Peak Hold", "rms" or "Average", or "dB" would stay activated. If you press any other key while the Frequency Softkeys are active, the Frequency Softkeys are deactivated and the frequency type is retained. F cancels Min Max, Touch Hold, "Rel", and the Continuity functions and resets the plot in Trend Display Mode. Turning the selector to another position resets the frequency measurement display to "Hz" in the secondary display. Duty cycle, pulse width, and period selections are not retained. If you press F while the selector is set to Ohms, Conductance, Diode Test, COMPONENT TEST, LOGIC, or SET UP, the GMM emits a long beep and ignores the key press.
The frequency measurement type (Hz, duty cycle, pulse width, period) does not change when you change display mode; the type remains in the primary or secondary display as last selected. In Amps functions, moving between "AC" and "DC" or "mA" and "µA" swaps the frequency reading back to the secondary display. Pressing F cancels Touch Hold. While F is active, you can press H to activate Touch Hold, which then works normally with the frequency type shown in the primary display. Pressing F cancels Min Max. Pressing M when F is active accesses the Min Max Softkeys but retains frequency as the primary function. If you press F when P is active, the GMM beeps and ignores the key press. While F is active, pressing P accesses the Print/Save Softkeys, retaining the frequency primary display selection.
2-24
Chapter 3
Some General Descriptions
Introduction
This chapter adds some details about GMM operation and measurement connections.
second charge state is at approximately 40 mA (±15 mA) to allow for battery charge maintenance without full charging from a discharged condition.
Battery Considerations
New alkaline (AA) cells provide a minimum of 4 hours operation. A fully charged NiCd battery pack (BP7217) typically provides 8 hours operation. Connect the battery eliminator to recharge the NiCd battery pack for the 867B. Fully charge the battery pack before using the 867B. External charging (use Battery Charger BC-7210 - not provided) must be used to charge a NiCd battery pack for Model 863. Refer to Chapter 7 (User Maintenance). Model 867B uses an internal two-state charger. The initial charge state is at approximately 170 mA (±30 mA) to allow for full overnight charging (16 hours minimum). The
Display Blanking (Sleep Mode)
During battery operation the display will blank after about 20 minutes if no controls have been changed. Press the wake up key once to restore the display. If the battery eliminator is connected, these battery saving features are not used. If a time-dependent measurement (Min Max, Trend, etc.) is in progress during battery operation, the backlight will go off after 20 minutes, but the Model 863 display will not blank until a low battery condition is reached. When the display blanks, no measurements are taken.
3-1
867B/863 Users Manual
Using the Backlight (Model 867B)
If the display is already on, pressing W toggles the backlight power level.
2.
With "LCD Contrast" highlighted, press 2 or 3 to change the contrast. This setting becomes effective immediately. If you want to make this setting part of the power-up defaults, press 5. The GMM then assumes this contrast setting each time you turn it on. Rotate the selector to the desired measurement or test function.
3.
NOTE If the display is blank and cannot be recovered, contrast may be off the scale. Restore contrast to mid-scale with the following shortcut: turn the selector to SET UP and avoid touching any key until the display reappears (about 15 seconds). Press 1 to store this setting, then turn the selector to the desired function.
4.
When the GMM is left idle in Setup mode for 12 seconds, the contrast will return to the LCD's default setting.
Adjusting Contrast
Adjust contrast as follows: 1. Rotate the selector to SET UP.
General Features
Refer to Figure 3-1 and Table 3-1 for an overall description of the controls, displays, and connections.
3-2
Some General Descriptions General Features
3
1
2
13
3
1 2 HZ 3 FREEZE DISPLAY MODE SAVE PRINT MIN MAX RANGE 4 5
OFF
SET UP
4
TOUCH HOLD
V
12 11
WAKE UP
COMPONENT TEST
V mV
Hi Z
5 6
14
LOGIC
15
10
9
ALL INPUTS 1000V MAX
A
10A MAX FUSED
LOGIC
mA A
320mA MAX FUSED 1000V MAX
CAT
COMPONENT TEST
1000V MAX
7
COM
A
mA / A
EXT TRIG
V
SEE WARNINGS ON BACK
8
Figure 3-1. General Features
3-3
867B/863 Users Manual
Table 3-1. General Features Number 1 Example Combo Meter View Trend Rel Name Display Description Combo, Meter, View, and Trend are the standard measurement display modes for most functions. Auto Diode Test, LOGIC Test, and COMPONENT Test use unique display modes. Refer to Figure 3-3 for descriptions of display features.
2
Softkey Labels
Labels define present uses for associated softkeys. A highlighted label means that item is presently selected. Labels change with rotary selector positions and key presses. If a small > symbol appears with a softkey label, you can access an additional set of softkey labels (a submenu) by pressing this softkey. The five blue softkeys serve different functions, depending on the rotary selector position and other keys in effect. Press at any time to change the range of a meter reading or the amplitude of a waveform. Select "Auto" (the standard selection) for an optimal display or "Manual" for selection of a specific range. Present range information is shown in the lower right corner of the display. Refer to Range Softkeys in Chapter 4. Press once to enable a display showing minimum, average, and maximum values. Refer to Min Max Softkeys in Chapter 4.
3 4
1 r
Softkeys Range Key
5
M
Min Max Key
3-4
Some General Descriptions General Features
Table 3-1. General Features (cont) Number 6 Example Name Touch Hold Key Description Press once to enable Touch Hold. The GMM test tool beeps and automatically updates the display each time a change in the reading is detected. If the input connections are withdrawn, the last reading (or waveform) is held in the display. Toggles Touch Hold on and off.
3
H
7
T
V C A a
Rotary Selector
Rotate the selector to any of the measurement or test positions. The input connections screen appears briefly, when first turned on or when selecting a function requiring an input connection change, then softkey labels specific to the selector position appear. Use V and COM for most measurements and tests (volts, ohms, conductance, diode test, capacitance, COMPONENT TEST). Use A (or mAµA) and COM for amps measurements. Use EXT TRIG and COM for LOGIC Test or as an external trigger for waveform display. Freeze the present reading (reverse contrast). You can then save or recall measurement values and configurations or print measurement information. In Model 867B, you can also save or recall waveforms and configurations. Refer to Chapter 6. Press to restore a blanked display; the display blanks after 20 minutes if no controls are changed. The display will not blank if the battery eliminator is connected. For Model 867B, this key toggles the backlight power level when the GMM test tool is already awake.
8
Input Connections
9
P
Save/Print Key
10
W
Wake Up Key
3-5
867B/863 Users Manual
Table 3-1. General Features (cont) Number 11 Example Name Frequency Key Description Swaps primary and secondary displays. The frequency measurement type (usually Hz) now occupies the primary display and the Frequency Softkeys are active. You can now select a different frequency type with the softkeys. Press F again to swap the primary and secondary displays back, retaining the most recent frequency type. Press to access the Display Mode Softkeys at any time. For volts and amps functions, you can now select Combo, Meter, View, or Trend. Ohms offers Meter or Trend. Other selector functions offer only Meter, while LOGIC, COMPONENT Test, and SET UP use their own unique display modes. Connect the RS-232 serial interface cable here for communications with a PC or printer. Connect the battery eliminator for ac operation. A NiCd battery pack installed in Model 867B charges whenever the battery eliminator is connected. Do not open this protective seal. Refer to the Service Manual.
F
12
d
Display Mode Key
13 14
RS-232 Optical Port
B
Battery Eliminator Connection Calibration Seal
15
3-6
Some General Descriptions Understanding Display Features
3
Understanding Display Features
Figure 3-3 illustrates typical display features. You will encounter Primary and Secondary Displays and the Graphical Window in Combo, Meter, and Trend Display Modes. Other display features will appear in all display modes.
Input Connections Screen
When you select a new function, the Input Connections Screen (Figure 3-2) appears momentarily to identify measurement connections to use, and displays modes that are available. (You can press 5 "Exit" during this 3-second pause to proceed immediately to the function display.) See Table 3-1 under Input Connections.
Combo
1
Meter
2 3
View
Trend
4 5
Exit
rita0601.eps
Figure 3-2. Input Connections Screen
Primary Display
Large digits represent the measurement or test based on the selector position. This display always appears in Meter, Combo, and Trend modes. The frequency reading (usually Hz) can be swapped into the primary display. When selected, "Rel" or "dB" automatically occupy the primary display.
Secondary Display
Smaller digits show the type of frequency reading (usually Hz) selected with the Frequency Softkeys. The primary reading can also be swapped into this display.
Graphical Window
This window shows a waveform in Combo Mode, an analog display in Meter Mode, or a plot in TrendGraphTM Mode.
3-7
867B/863 Users Manual
Softkey Labels
The present uses for the five softkeys appear immediately below the display.
Overload Indication (OL)
"OL" or "-OL" appears in the primary and secondary displays when an input has exceeded the present range (in Manual) or has exceeded the highest range available in this function (in Auto). A clipped waveform can appear in Combo or View mode (DC Volts, mV DC, DC Amps, DC mAµA functions only) if a large ac signal is riding on an overloaded dc signal.
Upper Status Line
The top display line identifies active operations as shown in Table 3-2.
Lower Status Line
The bottom display line (immediately above the softkey labels) identifies the display mode, function, and range. The l safety indicator also appears here if dangerous voltage is detected at the input terminals when the actual reading is not displayed.
Status Line (Upper) Primary Display
Secondary Display
Message Boxes
Message boxes appear in the lower display when the GMM test tool is performing an operation that you may not want to interrupt ("Saving" or "Printing").
Window Display Status Line (Lower) Softkey Labels
rita0390.eps
Figure 3-3. Display Features
3-8
Some General Descriptions Understanding Display Features
Table 3-2. Display Status Information SYMBOL DESCRIPTION Touch Hold is active. "Rel" (relative reading) is active (reference minus actual reading.) Min Max is active. This is the only indication if Min Max is running in the background. The serial interface port is enabled. Hi input impedance selected. Battery is low. Line power operation. GMM not calibrated. Contact a Fluke Service Center. Internal trigger (or External.) Dangerous voltage is present at the input terminals when the actual reading is not displayed.
3
h
REL Min Max
RS232 Hi-Z
b B
Uncal Internal
l
3-9
867B/863 Users Manual
Measurement Connections
Amps and mAµA Measurement Connections
Amps DC and AC and mAµA connections are illustrated in Figures 3-5 and 3-6.
m Warning
Never attempt a voltage measurement if a test lead is in the amp (A) or milliamp microamp (mAµA) input terminal. You might be injured or the GMM TEST TOOL might be damaged.
Circuit
General Measurement Connections
Volts, Ohms, Continuity, Conductance, Diode Test and Capacitance connections are illustrated in Figure 3-4.
Circuit
A
mA/ A EXT TRIG COM
V
Red
A
mA/ A EXT TRIG COM
V
Red
rita0382.eps
Figure 3-5. Amps Measurement Connections
rita0384.eps
Figure 3-4. General Measurement Connections
3-10
Some General Descriptions Measurement Connections
3
Circuit
Circuit
A
mA/ A EXT TRIG COM
V
A
mA/ A EXT TRIG COM
V
Red
Red
rita0381.eps
Figure 3-6. Milliamp and Microamp Connections.
rita0383.eps
Logic Test Connections
LOGIC Test connections are illustrated in Figure 3-7.
Figure 3-7. LOGIC Testing Connections
Frequency Measurement Connections
You can measure frequency from 2 Hz to 2 MHz in AC Volts, DC Volts, mV DC, Amps, and mAµA functions. For higher frequency readings (to > 10 MHz), use the Logic Test function.
3-11
867B/863 Users Manual
3-12
Chapter 4
Using the Hardkeys
Introduction
Hardkeys can be used in many function and display mode combinations. Although hardkeys are mentioned throughout this manual, this chapter provides a single source of detailed descriptions for using hardkeys and their accompanying softkeys.
The GMM test tool now highlights the present selection and allows you to do the following: · · Change display mode. Softkeys for the new display mode now appear. Return without changing the display mode. Press d again, or press the softkey for the selected display mode, or press 5 to exit.
Using Display Mode Softkeys
Press d at any time. The Display Mode Softkeys appear, showing the modes available with the present measurement function. Modes available with VAC, VDC, mV DC, A, and mAµA are shown.
Combo Meter View Trend Exit
Combo (the default mode set at the factory) appears automatically when the selector is set to VAC, VDC, mV DC, Amps, or mAµA. You can also select Meter as the default for these functions on the SET UP screen. Meter is the only mode available for Diode and Capacitance Test. Meter and Trend are the 4-1
867B/863
Users Manual
choices for Ohms and Conductance. LOGIC TEST, COMPONENT TEST, and SET UP each use a single, unique mode. The Display Mode Softkeys also appear briefly wh