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HP 70001A Mainframe
Installation and Veri cation Manual
Supplement for use with HP 70000
Modular Spectrum Analyzer Installation
and Veri cation Manual and
HP 70900B Local Oscillator Source
ABCDE
HP Part No. 70001-90021
Printed in USA September 1999
Notice
The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of any kind with regard to this material, including,
but not limited to, the implied warranties of merchantability and tness for a particular
purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing, performance, or use of this material.
Restricted Rights Legend.
Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth
in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at
DFARS 252.227-7013 for DOD agencies, and subparagraphs (c) (1) and (c) (2) of the Commercial
Computer Software Restricted Rights clause at FAR 52.227-19 for other agencies.
Copyright Hewlett-Packard Company 1988, 1999
c
All Rights Reserved. Reproduction, adaptation, or translation without prior written permission
is prohibited, except as allowed under the copyright laws.
1400 Fountaingrove Parkway, Santa Rosa, CA 95403-1799, USA
Certi cation
Hewlett-Packard Company certi es that this product met its published speci cations at the
time of shipment from the factory. Hewlett-Packard further certi es that its calibration
measurements are traceable to the United States National Institute of Standards and
Technology, to the extent allowed by the Institute's calibration facility, and to the calibration
facilities of other International Standards Organization members.
Warranty
This Hewlett-Packard instrument product is warranted against defects in material and
workmanship for a period of one year from date of shipment. During the warranty period,
Hewlett-Packard Company will, at its option, either repair or replace products which prove to
be defective.
For warranty service or repair, this product must be returned to a service facility designated by
Hewlett-Packard. Buyer shall prepay shipping charges to Hewlett-Packard and Hewlett-Packard
shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all
shipping charges, duties, and taxes for products returned to Hewlett-Packard from another
country.
Hewlett-Packard warrants that its software and rmware designated by Hewlett-Packard for
use with an instrument will execute its programming instructions when properly installed on
that instrument. Hewlett-Packard does not warrant that the operation of the instrument, or
software, or rmware will be uninterrupted or error-free.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modi cation or
misuse, operation outside of the environmental speci cations for the product, or improper
site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD SPECIFICALLY
DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES.
HEWLETT-PACKARD SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT,
OR ANY OTHER LEGAL THEORY.
Assistance
Product maintenance agreements and other customer assistance agreements are available for
Hewlett-Packard products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Oce.
iii
Safety Symbols
The following safety symbols are used throughout this manual. Familiarize yourself with each
of the symbols and its meaning before operating this instrument.
CAUTION The CAUTION sign denotes a hazard. It calls attention to a procedure which, if
not correctly performed or adhered to, could result in damage to or destruction
of the product or the user's work. Do not proceed beyond a CAUTION sign
until the indicated conditions are fully understood and met.
WARNING The WARNING sign denotes a hazard. It calls attention to a procedure
which, if not correctly performed or adhered to, could result in injury
to the user. Do not proceed beyond a WARNING sign until the indicated
conditions are fully understood and met.
DANGER The DANGER sign denotes an imminent hazard to people. It warns the
reader of a procedure which, if not correctly performed or adhered to,
could result in injury or loss of life. Do not proceed beyond a DANGER
sign until the indicated conditions are fully understood and met.
iv
General Safety Considerations
WARNING The instructions in this document are for use by quali ed personnel
only. To avoid electrical shock, do not perform any servicing unless you
are quali ed to do so.
The opening of covers or removal of parts is likely to expose dangerous
voltages. Disconnect the instrument from all voltage sources while it is
being opened.
The power cord is connected to internal capacitors that may remain live
for ve seconds after disconnecting the plug from its power supply.
This is a Safety Class 1 Product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact.
Any interruption of the protective conductor inside or outside of the
instrument is likely to make the instrument dangerous. Intentional
interruption is prohibited.
For continued protection against re hazard, replace fuse only with
same type and ratings, (type nA/nV). The use of other fuses or materials
is prohibited.
WARNING Before this instrument is switched on, make sure it has been properly
grounded through the protective conductor of the ac power cable to a
socket outlet provided with protective earth contact.
Any interruption of the protective (grounding) conductor, inside
or outside the instrument, or disconnection of the protective earth
terminal can result in personal injury.
Before this instrument is switched on, make sure its primary power
circuitry has been adapted to the voltage of the ac power source.
Failure to set the ac power input to the correct voltage could cause
damage to the instrument when the ac power cable is plugged in.
v
Contents
1. General Information
Mainframe Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Mainframes Covered by Manual . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Manual Updating Supplement . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Front/Rear-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Front-Panel Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
LINE ON Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Fault Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Module Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Rear-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Hewlett-Packard Interface Bus (HP-IB) . . . . . . . . . . . . . . . . . 1-7
Hewlett-Packard Modular System Interface Bus (MSIB) . . . . . . . . . . 1-7
Mainframe/Module Interconnect . . . . . . . . . . . . . . . . . . . . . 1-7
Electrostatic Discharge Information . . . . . . . . . . . . . . . . . . . . . . 1-8
Hazards of Internal Repair and Adjustment . . . . . . . . . . . . . . . . . 1-8
Reducing ESD Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Care and Handling of Electronic Components . . . . . . . . . . . . . . . . 1-9
Static-Safe Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Sales and Service Oces . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Returning Instruments for Service . . . . . . . . . . . . . . . . . . . . . . 1-12
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Instrument Shipping Preparation Procedure. . . . . . . . . . . . . . . . . 1-12
2. Installation
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Line Voltage Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
400 Hz Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Module Installation and Removal . . . . . . . . . . . . . . . . . . . . . . . 2-5
Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Contents-1
3. Speci cations
Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Nominal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
General Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4. Veri cation
Power-On Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Fault Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
5. Troubleshooting
Turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Fault Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Index
Contents-2
Figures
1-1. Typical Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2. Example of a Static-Safe Work Station . . . . . . . . . . . . . . . . . . . 1-9
2-1. Line Voltage Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2. Line Fuse Removal and Replacement . . . . . . . . . . . . . . . . . . . . 2-3
Tables
1-1. Accessories Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1-2. Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1-3. Static-Safe Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
1-4. HP Service Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Contents-3
1
General Information
This 42-page installation and veri cation manual supplement for the HP 70001A mainframe
supplements the installation and veri cation manual for the HP 70000 Series, HP 70900B local
oscillator source-controlled modules. For information on installing and verifying components
of the HP 70000 Series modular measurement system, refer to HP 70000 Modular Spectrum
Analyzer Installation and Veri cation Manual and HP 70900B Local Oscillator Source.
This manual contains the following ve chapters:
Chapter 1, \General Information," describes the mainframe and its accessories, gives
electrostatic discharge and packaging information, and lists Hewlett-Packard Sales and
Service Oces.
Chapter 2, \Installation," provides information for preparing a mainframe for use and using
it as a structural environment for installing and con guring instrument modules into HP
70000 Modular Measurement Systems.
Chapter 3, \Speci cations," lists mainframe speci cations and characteristics.
Chapter 4, \Veri cation," contains tests required to verify mainframe speci cations.
Chapter 5, \Troubleshooting," explains the probable causes of faults and problems indicated
by front-panel fault indicators, and provides diagnosis and problem isolation techniques to
help resolve these problems.
General Information 1-1
Mainframe Description
A mainframe is a device into which plug-in modules may be installed to create an instrument
in the modular measurement system. The HP 70001A mainframe provides the structural
environment for plug-in instrument modules along with cooling, power, and digital
communication interface buses.
It can accommodate 1/8-, 1/4-, 3/8-, and 1/2-width modules, and has a maximum capacity of
eight 1/8-width modules.
Standard rack compatibility is provided, and bench-top use is facilitated with integral bails and
retracting handles.
The Hewlett-Packard Modular System Interface Bus (MSIB) supports high-speed digital
communication among instrument modules within a mainframe and among instruments
connected to the external MSIB loop.
Every module in a mainframe has access to the standard Hewlett-Packard Interface Bus
(HP-IB). This bus provides a path of communication among controllers, other HP-IB instruments
and individual modules.
The ac power input is switchable between several ranges.
90-132 Vac, 47|66 Hz
199-264 Vac, 47|66 Hz
103-132 Vac, 356|444 Hz (with Option 400)
The mainframe power supply processes the ac line power to produces regulated 40 kHz
ac power for the modules, 5 Vdc for the MSIB, dc power for the cooling fans and a TTL
compatible line syncronization signal.
The primary power output, 24.3 Vac (average voltage, not rms) at 40 kHz, provides up to 200
Watts of power.
Two fans provide cooling for both the mainframe and up to eight installed 1/8-width modules.
The cooling fans operate at variable speeds: they are slow at temperatures below 30 C,
increasing their speed linearly above 30 C to a maximum speed for temperatures above 55 C.
This provides adequate cooling over the permitted range of temperatures.
Mainframes with serial numbers 2704A01796 and lower may have single speed fans. A Fan
Speed modi cation kit can be ordered for these units. This modi cation will provide variable
speed fans, reducing fan noise about 3 dB at ambient temperatures below 30 C.
1-2 General Information
Safety Considerations
Before operating this mainframe, familiarize yourself with any safety markings on the
mainframe and the safety instructions in this manual. This mainframe has been manufactured
and tested according to international safety standards. The cautions and warnings in this
manual and on the mainframe must be followed to ensure the safe operation of the mainframe
and protection of personnel. Refer to the summary of safety considerations at the front of this
manual.
Mainframes Covered by Manual
The contents of this manual apply to HP 70001A mainframes with the serial number pre x(es)
listed under \Serial Numbers" on the manual title page.
Serial Numbers
Attached to the front lower right frame of the mainframe, behind the swing-down door, is a
mylar serial-number label. The serial number is divided into two parts. The rst four digits and
a letter are the serial number pre x, and the last ve digits are the sux. See Figure 1-1.
The pre x is coded for the date of the last con guration change and is the same for all
identical mainframes; a pre x break or change only occurs when a signi cant modi cation
is made to the product. The letter designates the country of origin. The sux is assigned
sequentially and is dierent for each mainframe.
Figure 1-1. Typical Serial Number Label
General Information 1-3
Manual Updating Supplement
A mainframe manufactured before or after this manual was printed may have a serial
number pre x other than that listed under \Serial Numbers" on the manual title page. A
lower serial-number pre x means that all current changes may not have been made to
this mainframe. A higher serial-number pre x means that changes have been made to the
mainframe since the manual was printed. These changes are documented in the Manual
Updating Supplement for this manual. The Manual Updating Supplement may also contain
information for correcting errors in the manual. To keep the manual as current and accurate as
possible, periodically request the latest Manual Updating Supplement for this manual from your
nearest Hewlett-Packard Sales and Service oce.
Initial Inspection
Inspect the shipping container for damage. If the shipping container or cushioning material
is damaged, it should be kept until the contents of the shipment have been checked for
completeness and the mainframe has been checked mechanically and electrically. Refer to
table 1-1 to determine what accessories should have been shipped with the mainframe. If the
shipping contents are incomplete or damaged, notify the nearest Hewlett-Packard Sales and
Service Oce.
1-4 General Information
Accessories
The accessories supplied with an HP 70001A Mainframe ordered separately or as part of
a precon gured HP 70000 Modular Measurement System are the same. These accessories
are listed in Table 1-1. Contact the nearest Hewlett-Packard Sales and Service Oce for a
description of all power cables currently available for dierent country destinations.
Table 1-1. Accessories Supplied
Accessory HP Part Number
8 mm hex ball driver 8710-1651
Power Cable Part number depends
on country of destination
When ordered with a precon gured HP 70000 Modular Measurement System, cables are
supplied to connect the modules in that con guration. Refer to the installation and veri cation
manual for the system master for cables available for custom con gurations.
Options
The following options are available and can be ordered from the nearest Hewlett-Packard Sales
and Service Oce.
Table 1-2. Options
Option number Description HP Part Number
400 400 Hz Input 70001-60066
Isolation Transformer
913 Rack mount 5061-9772
with handles
908 Rack mount 5061-9678
without handles
010 Rack slide 5062-0781
General Information 1-5
Front/Rear-Panel Features
Front-Panel Indicators
LINE ON Indicator
A green LINE ON indicator LED, located on the lower left front-panel, is illuminated when
power is applied to the unit.
Fault Indicator LEDs
The following three fault indicators are located on the lower center front-panel.
VOLT/TEMP red fault LED.
CURRENT red fault LED
I/O red fault LED
Some older models may have a fourth fault indicator labeled AIR FLOW. The circuitry for this
indicator has been disabled.
A description of conditions that can cause these fault indicators to turn on is supplied in
Chapter 5, \Troubleshooting."
Module Latch
The module hex-nut latch secures a module in a mainframe. When a module is being installed
into or removed from an HP 70001A Mainframe, an 8 mm hex-ball driver is used to turn the
module latch screw. Refer to Chapter 2, \Module Installation."
1-6 General Information
Rear-Panel Features
Inputs/Outputs
Two MSIB Input/Output connectors and one HP-IB connector are located on the rear panel.
Each module can have an interface to the MSIB bus and to the HP-IB bus.
Hewlett-Packard Interface Bus (HP-IB). The HP-IB connector provides feedthrough
communication among controllers, other HP-IB instruments, and with each module installed in
the mainframe.
Hewlett-Packard Modular System Interface Bus (MSIB). The MSIB is the high-speed digital
bus used by master, slave modules and other elements for exchanging control information and
data. It consists of both an internal and an external bus. The internal bus is housed in the HP
70001A Mainframe and connects to each installed module within the mainframe. External
MSIB cables connect mainframes to each other, to the Graphics Display, and to other MSIB
compatible devices. This external MSIB bus allows multiple instruments to communicate and
be displayed simultaneously. The use of longer MSIB cables allows you to locate a display some
distance from the rest of the instrument. See \Remote Operation" in Chapter 2, \Installation."
Refer to the installation and veri cation for the system master for additional information
related to the HP-IB and MSIB buses and cabling instructions.
Mainframe/Module Interconnect
The mainframe has slots to accommodate eight 1/8-width modules. Each of these slots has air
holes to deliver cooling air and a multiple-pin connector providing power-supply voltages and
MSIB connections for module communication and control.
General Information 1-7
Electrostatic Discharge Information
Electrostatic discharge (ESD) can damage or destroy electronic components. All work on
electronic assemblies should be performed at a static-safe work station. Figure 1-2 shows an
example of a static-safe work station using two types of ESD protection: (1) wrist-strap (with
greater than 1m
isolation to ground) and table-mat combination, (2) heel-strap (with greater
than 1m
isolation to ground) and conductive
oor-mat combination. The two types must
be used together to ensure adequate ESD protection. Isolation to ground must be provided
for personnel protection. Refer to Table 1-3 for a list of static-safe accessories and their part
numbers.
WARNING In order to provide proper personnel protection, the wrist- and
heel-straps must have greater than 1mohm isolation to ground.
Hazards of Internal Repair and Adjustment
If the HP 70001A bottom cover is removed for any reason, the following precautions must be
observed.
WARNING
Disassembly, adjustments, and internal repairs should only be attempted
by quali ed technical personnel.
The mainframe internal power supplies have lethal voltages, with lethal
currents, in all areas.
DANGEROUS VOLTAGES exist on boards in this instrument even when the
power is o.
Board assembly voltages cannot be safely measured without an isolation
transformer.
AC power line voltage is present on the power supply board, even when
the power switch is o.
The power supply board circuit common can be at approximately 0200 V,
not earth ground.
Capacitors may retain high-voltage stored charges for several minutes,
even with no power applied.
1-8 General Information
Reducing ESD Damage
Care and Handling of Electronic Components
Handle these items at a static-safe work station.
Store or transport these items in static-shielding containers.
Use proper handling techniques.
Figure 1-2. Example of a Static-Safe Work Station
General Information 1-9
Static-Safe Accessories
Table 1-3. Static-Safe Accessories
HP Part Description
Number
9300-0797* set includes: 3M static control mat 0.6 m 2 1.2 m ( 2ft 2 4ft) and 4.6 cm
(15 ft) ground wire. (The wrist-strap and wrist-strap cord are not included.
They must be ordered separately.)
9300-0980* Wrist-strap cord 1.5 m (5 ft)
9300-1383* Wrist-strap, color black, stainless steel, without cord, has four adjustable
links and a 7 mm post-type connection.
9300-1169* ESD heel-strap (reusable 6 to 12 months).
9300-0793* Shoe ground strap.
*Order through any Hewlett-Packard Sales and Service Oce.
92175A ** Black, hard surface, static control mat, 1.2 m 2 1.5 m (4 ft 2 5 ft)
92175B ** Brown, soft-surface, static control mat, 2.4 m 2 1.2 m (8 ft 2 4 ft)
92175C ** Small, black, hard surface, static control mat, 1.2 m 2 0.9 m (4 ft 2 3 ft)
92175T ** Tabletop static control mat, 58 cm 2 76 cm (23 in 2 30 in)
92176A ** Natural color anti-static carpet, 1.8 m 2 1.2 m (6 ft 2 4 ft)
92176C ** Russet color anti-static carpet, 1.8 m 2 1.2 m (6 ft 2 4 ft)
92176B ** Natural color anti-static carpet, 2.4 m 2 1.2 m (8 ft 2 4 ft)
92176D ** Russet color anti-static carpet, 2.4 m 2 1.2 m (8 ft2 4 ft)
**Order by calling HP DIRECT Phone (800) 538 8787 or through any
Hewlett Packard Sales and Service Oce.
Sales and Service Oces
Hewlett-Packard Sales and Service Oces provide complete support for Hewlett-Packard
products. To obtain servicing information, or to order replacement parts, contact the nearest
Hewlett-Packard Sales and Service Oce listed in Table 1-4. In any correspondence, be sure to
include the pertinent information about model numbers, serial numbers, and/or assembly part
numbers.
1-10 General Information
A current list of Hewlett-Packard Service Centers can be accessed on the Internet at:
http://www.tmo.hp.com/tmo/contacts/
If you do not have access to the Internet, one of the following Hewlett-Packard locations can
direct you to your nearest Hewlett-Packard representative:
Table 1-4. HP Service Centers
United States Hewlett-Packard Company
Test and Measurement Call Center
(800) 403-0801
(800) 857-8161 (FAX)
Canada Hewlett-Packard Canada Ltd.
5150 Spectrum Way
Mississauga, Ontario L4W 5G1
(905) 206-4725
(905) 206-4739 (FAX)
Europe Hewlett-Packard European Marketing Centre
Postbox 667
1180 AR Arnstelveen
Netherlands
(31/20) 547-6669
(31/20) 647-8706
Japan Hewlett-Packard Japan Ltd.
27-15, Yabe 1-Chome,
Sagamihara, Kanagawa 229
Japan
(81426) 567 832
(81426) 567 843 (FAX)
Latin America Hewlett-Packard Latin America Region Headquarters
5200 Blue Lagoon Drive, 9th Floor
Miami, Florida 33126
U.S.A.
(305) 267 4245
(305) 267 4288 (FAX)
Austrailia/New
Zealand
Hewlett-Packard Calibration Services Austrailia Ltd.
31-41 Joseph Street
Blackburn, Victoria 3130
Austrailia
1800 802 540
1800 681 776 (FAX)
Asia-Paci c Hewlett-Packard Asia-Paci c Ltd.
17-21/F Shell Tower, Times Square
1 Matheson Street, Causeway Bay
Hong Kong
(852) 25 997 777
(852) 25 069 261 (FAX)
General Information 1-11
Returning Instruments for Service
If a mainframe is being returned to Hewlett-Packard for servicing, ll in and attach a blue
service tag. Service tags are supplied at the end of this manual. Please be as speci c as
possible about the nature of the problem. Include copies of error messages, data related to
mainframe performance, type of system, etc., along with the mainframe being returned.
Packaging
The original shipping containers should be used. If the original materials were not retained,
identical packaging materials are available through any Hewlett-Packard oce.
Caution Instrument damage can result from using packaging materials other than
those speci ed. Never use styrene pellets as packaging material. They do not
adequately cushion the instrument or prevent it from shifting in the carton.
They also cause instrument damage by generating static electricity.
Instrument Shipping Preparation Procedure.
1. Fill out a blue repair card (located at the end of this manual) and attach it to the
instrument. Include any error messages or speci c performance data related to the problem.
If a blue repair tag is not available, the following information should be noted and sent with
the instrument.
a. Type of service required
b. Description of the problem
c. Is problem constant or intermittent
d. Name and phone number of technical contact person
e. Return address
f. Model number of returned instrument
g. Full serial number of returned instrument
h. List of any accessories returned with instrument
2. Pack the instrument in the appropriate packaging materials. Original shipping materials or
the equivalent should be used. If the original or equivalent materials cannot be obtained,
instruments can be packaged for shipment using the following instructions.
Caution Inappropriate packaging of instruments may result in damage to the instrument
during transit.
1-12 General Information
a. Wrap the instrument in anti-static plastic to reduce the possibility of damage caused by
ESD.
b. For instruments that weigh less than 54 kg (120 lb), use a double-walled, corrugated
cardboard carton of 159 kg (350 lb) test strength.
c. The carton must be large enough to allow three to four inches on all sides of the
instrument for packing material and strong enough to accommodate the weight of the
instrument.
d. Surround the equipment with three to four inches of packing material, to protect the
instrument and prevent it from moving in the carton.
e. If packing foam is not available, the best alternative is S.D.-240 Air Cap from Sealed Air
Corporation (Commerce, California 90001). Air Cap looks like a plastic sheet lled with
1-1/4 inch air bubbles.
f. Use the pink (anti-static) Air Cap to reduce static electricity. Wrapping the instrument
several times in this material will protect the instrument and prevent it from moving in
the carton.
3. Seal the carton with strong nylon adhesive tape.
4. Mark the carton `FRAGILE, HANDLE WITH CARE'.
5. Retain copies of all shipping papers.
General Information 1-13
2
Installation
This chapter contains information needed to prepare a mainframe for use, and describes how
instrument modules are installed to con gure the HP 70001A Mainframe into an HP 70000
Series system.
The information presented is general in nature. For more detailed information on con guration
and HP-MSIB addressing, refer to the installation and veri cation manual for the system master
(e.g., HP 70900A Local Oscillator).
The HP 70001A mainframe is a rugged structure into which modules of various widths
can be placed. It provides power, cooling, and a suitable environment for electromagnetic
compatibility for the modules, and manages all digital communications among the system
elements. LED fault indicators, on the lower front-panel, report mainframe or module
problems. For speci c LED fault indicator information, refer to Chapter 5 of this manual.
Unpacking
Inspect the shipping container for damage. If the container or cushioning material is damaged,
check the contents of the shipment both mechanically and electrically. If the contents are
damaged or defective, contact your nearest Hewlett-Packard Sales and Service Oce. A list
of oces is included in Chapter 1 of this manual. Hewlett-Packard will arrange for repair or
replacement of the damaged or defective equipment without waiting for a claim settlement.
Keep the shipping materials for the carrier's inspection.
Installation 2-1
Preparation for Use
Line Voltage Selector
Set the line voltage selector to the setting corresponding to the power source used. Access to
this switch is provided through a hole in the left-front bottom cover. Refer to Figure 2-1 for an
illustration of the line voltage selector.
WARNING Before turning this instrument on, make sure it is grounded through the
protective conductor of the ac power cable to a socket outlet provided
with protective earth contact. Any interruption of the protective
(grounding) conductor inside or outside the instrument, or disconnection
of the protective earth terminal, can result in personal injury.
CAUTION Before turning this instrument on, make sure the line voltage selector is set to
the voltage of the ac power source.
115 V position for 90 to 132 Vac line input voltages
230 V position for 198 to 264 Vac line input voltages
Failure to set the ac power input to the correct voltage could cause one of two
things to happen when power is applied.
If the switch is set to 115 V and the instrument is connected to 230 V, the
fuse will blow.
If the switch is set to 230 V and the instrument is connected to 115 V, the
instrument will not turn on and the VOLTnTEMP fault indicator will light.
Figure 2-1. Line Voltage Selector
2-2 Installation
400 Hz Option
The HP 70001A Mainframe is available with an option that allows it to operate on a power-line
frequency of 400 Hz. The 400 Hz option comes with an external in-line 600 V-A isolation
transformer that must be used when the instrument uses a 400 Hz power source.
WARNING Never operate a 400 Hz option instrument on a 400 Hz power line without
using the in-line isolation transformer supplied for this purpose. Failure
to follow this precaution can create a shock hazard which may result in
personal injury.
The in-line isolation transformer must be removed from the 400 Hz option for 50/60 Hz power
source operation. Failure to remove the in-line 400 Hz transformer will result in the 400 Hz
transformer input fuse. When the isolation transformer is removed, a standard power cord
must be used. The in-line transformer must be reinstalled when using a 400 Hz power source,
in order to protect the user from electric shock hazard.
Fuse Replacement
The line fuse for this instrument is located inside the power cord receptacle housing on the
back of the instrument. Also included in this housing is a spare fuse. The fuse is a 5 by 20 mm
fuse rated at 6.3 A, 250 V, HP part number 2110-0703. Refer to Figure 2-2 for fuse removal
and replacement.
Figure 2-2. Line Fuse Removal and Replacement
Installation 2-3
Cabling
The HP-MSIB cables are connected in a serial (daisy-chain) manner, coupling the input of one
element to the output of next until the loop is completed.
Remote Operation
The use of long HP-MSIB cables to separate the mainframe and display, or other products
supporting HP-MSIB, allows remote operation. Since the signals on the HP-MSIB are digital,
only measurement speed is slightly degraded.
Addressing
The HP 70001A Mainframe does not have an HP-MSIB address. The mainframe acts as an
HP-MSIB arbitrator, allocating time on the HP-MSIB bus to any module or device designed to
work with an HP 70000 Series system that requests it.
Adjustments
The HP 70001A Mainframe has only internal service-related adjustments. These adjustments
should only be attempted by quali ed technical personnel.
2-4 Installation
Module Installation and Removal
Module Installation
To install modules into a mainframe, follow these steps.
1. Turn the mainframe o.
2. Swing open (down) the front door. Note that the door will not swing down unless the line
switch is o.
3. Slide the module into the mainframe.
4. Tighten the module latch using an 8 mm hex-balldriver.
5. Connect intermodule cabling.
Module Removal
The removal of modules is accomplished by following these steps.
1. Turn the mainframe o.
2. Disconnect intermodule cabling. Be sure to check the rear of the module.
3. Swing open the front door. (Power switch must be o.)
4. Loosen and disengage the module latch using an 8 mm hex-balldriver.
5. Slide the module out of the mainframe.
Note Care should be taken when installing and removing modules. The front panels
of adjacent modules can easily be scratched and dented if the module being
moved is not carefully guided into or out of its slot.
CAUTION Modules must be slid straight into and out of the mainframe slots or the sharp
edges of the module covers may contact and abrade the covers of adjacent
modules and mainframe guides.
If extreme environmental conditions exist where dust and debris may be drawn
into the air
ow and distributed throughout the instrument, a Frame-Fine
Filter (HP part number 70000-40017) can be ordered from the nearest HP Sales
and Service Oce.
Installation 2-5
3
Speci cations
The following speci cations apply to the HP 70001A mainframe. For system speci cations,
refer to the \Speci cations" chapter of the installation and veri cation manual for the system
master.
Speci cations
Speci cations describe warranted performance over the temperature range 0 C to 55 C (except
where noted) after one hour of continuous operation.
Nominal Values
Nominal values provide useful information by giving functional, but non-warranted,
performance parameters.
General Speci cations
Temperature Operation Storage
0 C to +55 C 040 C to +75 C
EMI Radiated interference
is within the requirements of
MIL-STD 461B, Class A1c RE02
Warm-up time One hour from a cold start1
(0 to 55 C)
Weight (nominal value) 14.5 kg (32 lb) (mainframe only)
Dimensions Height 177 mm (6.97in)
Width 425 mm (16.75 in)
Length 526 mm (20.7 in)
AC Power Input 90|132 Vac 47|66 Hz
Line Ranges 198|264 Vac 47|66 Hz
103|132 Vac 365|444 Hz
(with Option 400)
VA Rating 310 W maximum
570 VA maximum
1 The mainframe requires a maximum of 5 minutes warm-up time; however, when con gured
into an instrument, the other elements may require 1 hour warm-up time.
Speci cations 3-1
4
Veri cation
This chapter normally contains unit performance-veri cation tests, which evaluate the
electrical performance of the unit against its speci cations. There are no performance-
veri cation tests that apply to the HP 70001A mainframe speci cations.
Power-On Self-Test
The act of turning on an HP 70000 Series system causes any modules installed in the system to
execute a power-on self-test. The mainframe is not involved in these tests except in supplying
power and communication for the modules.
For a detailed explanation of the power-on self-tests, refer to the \Troubleshooting" chapter of
the installation and veri cation manual for the system master.
Fault Indicators
The HP 70001A Mainframe has VOLT/TEMP, CURRENT, and I/O fault indicators. If any of these
indicate a fault, the condition must be cleared before the mainframe will operate. Refer to
Chapter 5, \Troubleshooting."
Veri cation 4-1
5
Troubleshooting
This chapter provides troubleshooting information on the HP 70001A mainframe. Problem
isolation and diagnosis related to the front-panel fault indicator lights, fan operation, fuse
replacement, and power-on light are discussed as operator-level repairs.
Turn On
When the HP 70001A as part of an HP 70000 Modular Measurement System is turned on, the
mainframe monitors its condition as it brings power and cooling air up to speci cation. Once
power and cooling is established, the modules begin their self-test sequences.
The power ON light should come on and stay on.
The VOLT/TEMP and I/O fault indicators should blink on and then turn o.
The CURRENT fault indicator should not light.
The fan noise will be noticeable.
During this self-test, the module ACT and ERR lights of all the modules in the instrument
will be turning on and o. After about a minute these lights should settle down to a steady
state.
After the module self-test is complete, the power ON indicator is the only mainframe light
that should remain on.
Note Some older models may have a fourth fault-indicator labeled AIR FLOW. This
indicator should not light. The circuitry for this function should be disabled.
Line Fuse
A 6.3 A, 250 V line fuse is located inside the power receptacle on the back of the instrument.
The most common reason for an open fuse is improper setting of the line voltage selector,
however, internal problems can also cause a fuse to open.
See Figure 2-2 for fuse removal and replacement information. Refer to the HP 70001A Service
Manual for troubleshooting information.
Troubleshooting 5-1
Fault Indicators
The HP 70001A has three fault indicators. While these indicators are located in the mainframe,
problems external to the mainframe can cause the indicators to turn on. External problems
should be investigated before troubleshooting the mainframe.
VOLT/TEMP If this fault indicator is on steady, check for the following problems before
deciding the mainframe needs repair.
Temperature Excessive ambient temperature, exceeding 55 C will cause the
limits VOLT/TEMP fault indicator to come on and stay on. Move
the mainframe to a cooler environment and wait for the
temperature to decrease to the normal operation range.1 When
the temperature decreases the mainframe will restart itself.
If the indicator goes out after the mainframe has cooled the
mainframe is probably not at fault.
If the problem persists; when the mainframe attempts to restart
itself, verify that both cooling fans are operating by checking
the air
ow into both of the rear-panel fan-intake openings of
the mainframe.
Low input If the line voltage is low or the voltage selector setting does not
voltage agree with the input voltage, the VOLT/TEMP fault indicator
will come on. Check the ac input voltage and set the voltage
selector switch as follows.
115 V position for 90|132 Vac line input voltage.
230 V position for 198|264 Vac line input voltage.
If the low voltage condition is corrected, the unit will restart
itself.
Note Very long ac wiring runs may cause the ac power voltage at the mainframe to
drop below an acceptable limit, when the mainframe applies its load to the ac
line. This will cause the mainframe to cycle on and o. No damage will occur
as a result. The cure is to correct the power wiring or voltage.
A
ashing VOLT/TEMP fault indicator can be caused by an
impedance mismatch between the ac line and the mainframe
input. This usually occurs only at extremely low temperatures
(below 0 C). The cold input thermistors (now a high impedance)
reduce the line voltage. An under voltage condition is sensed
and the mainframe shuts o. The reduced load allows the
sensed line voltage to rise and the unit turns back on.
1 Keep in mind that the internal temperature of the instrument will change with a
corresponding change in the ambient room temperature, and that there is a delay between
a change in ambient temperature and a change in internal temperature. It can take 20
minutes or more for an overheated mainframe to cool internally to an acceptable
temperature, since no cooling air is being moved by the fans when the supply is shut down.
5-2 Troubleshooting
This cycling will continue until the input thermistors warm up
to a point where the sensed voltage is within tolerance. At
this point the fault indicator stops
ashing, the mainframe is
operational.
If the condition does not go away after several minutes, check
the input line voltage under load or change the ambient
operating temperature.
High output These two conditions will also cause the the VOLT/TEMP fault
voltage and indicator to come on and the instrument will latch in a fault
Fan voltage condition. The mainframe is in need of internal repair or
failure adjustment. It will shut down and not attempt to restart until
ac line power is cycled.
CURRENT This circuitry senses and indicates if the load on the mainframe power supply
is too high. Upon sensing an over-current condition, the power supply is shut
down and latched. It will not attempt to restart until ac line power is cycled.
If a CURRENT fault indicator is on, check for a faulty module before
attempting to repair the mainframe. The following steps will help isolate the
problem.
1. Turn the mainframe o.
2. Remove all the modules from the mainframe.
3. Cycle the power. Is the CURRENT indicator still on?
NO Turn o the mainframe and one by one replace the modules (cycling
power each time) until the faulty module is identi ed. Refer to the
repair procedures in the installation and veri cation manual for the
system master or the service manual related to the faulty module for
repair alternatives.
YES If the CURRENT indicator is still on when all of the modules have
been removed from the mainframe, the mainframe probably has an
internal problem. Check to ensure that the grounding springs on the
50 pin module connectors are not shorting the 40 KHz to ground.
Refer to the HP 70001A Service Manual for additional troubleshooting
information.
Troubleshooting 5-3
I/O This circuitry senses the readiness of the external HP-MSIB. If the indicator is
on, HP-MSIB communications are inhibited. The I/O fault indicator light will be
on if one of the following conditions is true.
The external HP-MSIB loop is not complete. Check that both ends of all
HP-MSIB cables are securely connected.2
Not all the elements on the external HP-MSIB loop have the power
turned on. Verify that the power is on to all mainframes and stand-alone
instruments on the external HP-MSIB.
The mainframe is in need of repair.
HP-MSIB communication will resume as soon as the problem is corrected.
If an I/O light fault is indicated, the following steps will help isolate the
problem.
Disconnect both HP-MSIB cables from the mainframe at the mainframe
connectors. Is the I/O fault indicator still on?
NO The problem is either with the cables, or the element that was
connected to the mainframe with the cables.
Loop each cable \IN" to \OUT" to the mainframe HP-MSIB connectors.
If the I/O light comes on, that cable is faulty. If the light does not
come on for either cable, then the element connected with these
cables is faulty. Refer to the service manual for that element for
troubleshooting information.
YES The HP 70001A Mainframe or one of the installed modules is probably
faulty. Remove all the modules. Does the light still come on?
Yes The mainframe is faulty. Refer to the HP 70001A Service
Manual for troubleshooting information.
No Replace the modules one at a time until a faulty module or slot
is located. Try the module in a dierent slot. If the problem
only occurs in one slot the mainframe or connector is faulty. If
the problem follows the module the module is faulty. Refer to
the faulty module service manual for repair instructions.
Note It is possible that a module may disrupt all HP-MSIB communication with no
mainframe fault or no module error lamp turned on.
2 If more than one mainframe is used, or if other elements are connected to the HP-MSIB, all
cables must be connected otherwise; the HP-MSIB will not operate. If a single mainframe
with no external elements is used, there should be no HP-MSIB cables connected to the
external HP-MSIB connectors of that mainframe, although a single cable looped from the
input connector to the output connector will allow the mainframe to operate.
5-4 Troubleshooting
If problems persist, refer to the installation and veri cation manual for the system master or
the HP 70001A Service Manual for additional troubleshooting information.
Keep in mind that mainframe internal adjustments or repairs should only be attempted by
quali ed technical personnel. Review the \Hazards of Internal Repair or Adjustment" and
associated warning notice in Chapter 1, \General Information."
Troubleshooting 5-5
Index
A M
accessories supplied, 1-5 MSIB, 1-7
C O
cooling, 1-2 option, 400Hz, 2-3
options, 1-5
E
ESD P
heel-strap, 1-9 packaging, 1-4
protection, 1-9 containers, 1-12
Static mat;
oor, 1-9 power
Static mat;table, 1-9 input, 1-2
wrist-strap, 1-9 output, 1-2
power requirements, 3-1
F
failure recovery, 5-2 R
fault indicators removing modules, 2-5
CURRENT, 1-6, 5-4
I/O, 1-6, 5-4 S
VOLT/TEMP, 1-6, 5-4 self test, 4-1
fuse serial number
location, 2-3 label, 1-3
replacement, 2-3 pre x, 1-3, 1-4
size, 2-3 sux, 1-3
shipping containers, 1-12
H speci cations
help, 1-10 EMI, 3-1
HP-IB, 1-7 power requirements, 3-1
temperature, 3-1
I
installing modules, 2-5 U
updating manuals, 1-4
L
line voltage selector, 2-2 W
weight, 3-1
Index-1