Agilent E8403A Users Guide

Contents

HP E8401A, E8403A User and Service Manual

Edition 1

HEWLETT-PACKARD WARRANTY STATEMENT ..............................................3

Safety Symbols.............................................................................................................4

WARNINGS.................................................................................................................4

Declaration of Conformity............................................................................................5

Reader Comment Sheet ................................................................................................7

Chapter 1

Getting Started ...............................................................................................................9

Product Overview.........................................................................................................9

Preparing Your VXI System for Use ..........................................................................10

AC Power Requirements .....................................................................................10

Positioning the Mainframe for Adequate Cooling ..............................................10

Connecting the

Mainframe to a Permanent Earth Ground ...........................................................11

Installing VXI Instruments.........................................................................................12

Installing C-Size Instruments ..............................................................................13

Installing A- and B-Size Instruments ..................................................................14

Front Panel Features...................................................................................................15

Diagnostic Connector ........................................................ ......... ................................16

+5VC (pin 6) .......................................................................................................17

+12VC (pin 7) .....................................................................................................17

+5V STDBY (pins 8, 21) ....................................................................................17

SYSRESET* (pin 10) ..........................................................................................17

ACFAIL* (pin 23) ...............................................................................................17

Using the Remote Power-On Pins .......................................................................18

Disabling the On/Stdby Switch ...........................................................................19

Mainframe Options and Accessories..........................................................................21

Chapter 2

Rack Mounting and Option Installation ...................................................................23

Chapter Overview.......................................................................................................23

Rack Mounting the HP E840xA Mainframe..............................................................23

Parts List ..............................................................................................................24

Rack Mounting the HP E840xA using Support Rails .........................................25

Procedure .............................................................................................................25

Rack Mounting the HP E840xA Using Rack Slide Rails ...................................29

Procedure .............................................................................................................29

Installing the Cable Tray.............................................................................................34

Parts List ..............................................................................................................34

Procedure .............................................................................................................34

Installing the Tinted Acrylic Door (Option 915)........................................................36

Parts List ..............................................................................................................36

Installing the Intermodule Chassis Shields.................................................................38

Parts List ..............................................................................................................38

Contents 1

Procedure .............................................................................................................38

Installing the Backplane Connector Shields...............................................................40

Parts List ..............................................................................................................40

Procedure .............................................................................................................40

HP E840xA Air Filter Kit...........................................................................................42

Chapter 3

Servicing Your Mainframe .........................................................................................43

Chapter Overview.......................................................................................................43

Problem Isolation........................................................................................................43

No Power Line Fuse ............................................................................................43

Isolating Problems ...............................................................................................44

Replacing Assemblies.................................................................................................44

Removing the Rear Panel from the Mainframe ..................................................45

Removing the Mainframe Cover .........................................................................46

Replacing the Basic Monitor Board ....................................................................47

Replacing the HP E8401A Power Supply ...........................................................48

Replacing the HP E8403A Power Supply ...........................................................49

Replacing the Impeller ........................................................................................50

Replacement Power Cords..........................................................................................51

Appendix A

HP E8401A, E8403A Product Specifications ............................................................53

Product Descriptions...................................................................................................53

General Specifications .................................................................................... .....53

Mechanical Specifications ...................................................................................53

Output Power Specifications ......................................................................................54

Total Available and Usable Power ......................................................................54

Peak and Dynamic Current .................................................................................54

Output Voltage Specifications ............................................................................55

Input Power Requirements..........................................................................................55

Cooling Specifications................................................................................................56

Cooling Specification Charts ..............................................................................56

Acoustical Noise Specifications .................................................................................58

Backplane Specifications............................................................................................58

Basic Monitor Specifications......................................................................................58

Environmental Specifications.....................................................................................59

2 Contents

HEWLETT-PACKARD WARRANTY STATEMENT

HP PRODUCT: HP E8401A, E8403A C-Size VXI Mainframes DURATION OF WARRANTY: 3 years

1. HP warrants HP hardware, accessori es and supplies against defects i n mat erials and workmanship for the period specified above. If
HP receives notice o f such defects during the warranty period, HP will, at its option, either repair or re place products which prove to be
defective. Replacement products may be either new or like-new.

2. HP warrants that HP software will not fail to execut e its programming instructions, for the period specified above, due to defects in
material and workmanship when properly installed and used. If HP recei ves notice of such defects during t he warranty period, HP will
replace software media which does not execute i ts programming instructi ons due to such defects.

3. HP does not warrant that the operation of HP products will be interrupted or error free. If HP is unable, within a reasonable time, to
repair or replace any product to a condition as warranted, customer will be entitled to a refund of the purchase price upon prompt return
of the product.

4. HP products may con tain remanufactured parts equivalent to new in performance o r may have been subject to incidental use.

5. The warranty period begins on the date of delivery or on the date of installation if installed by HP. If customer schedules or delays HP
installation more than 30 days after delivery, warranty begins on the 31st day from delivery.

6. Warranty does not apply to defects resulting from (a) improper or inadequate maintenance or calibration, (b) software, interfacing, parts
or supplies not supplied by HP, (c) unauthorized modification or misuse, (d) operation outside of the published environmental
specifications for the product, or (e) improper site preparation or maintenance.

7. TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE WARRANTIES ARE EXCLUSIVE AND NO OTHER
WARRANTY OR CONDITION, WHETHER WRITTEN OR ORAL, IS EXPRESSED OR IMPLIED AND HP SPECIFICALLY
DISCLAIMS ANY IMPLIED WARRANTY OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, AND
FITNESS FOR A PARTICULAR PURPOSE.

8. HP will be liable for damage to tangible property per incident up to the greater of $300,000 or the actual amount paid for the product
that is the subject of the claim, an d for damages for bodily injury or death , to the extent that all such damag es are determined by a court
of competent jurisdiction to have been directly caused by a defective HP product.

9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS WARRANTY STATEMENT ARE CUSTOMER’S
SOLE AND EXLUSIVE REMEDIES. EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL HP OR ITS SUPPLIERS BE
LIABLE FOR LOSS OF DATA OR FOR DIRECT, SP ECIAL, INCIDENTAL, CONSEQUENTIAL (INCLUDING LOST PROFIT OR
DATA), OR OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR OTHERWISE.

FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND: THE WARRANTY TERMS CONTAINED IN THIS
STATEMENT, EXCEPT TO THE EXTENT LAW FULLY PERM ITTED, DO NOT EXCLUDE, RESTRICT OR MODIFY AND AR E
IN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU.

U.S. Government Restricted Rights

The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercial
computer software" as defined in DFARS 252.227- 7013 (Oct 1988), DFARS 252.211-7015 (May 1991) or DFARS 252.227-7014 (Jun

1995), as a "commercial item" as defined in FAR 2.101(a), or a s "Restricted computer software" as defined in FAR 52.227-19 (Jun

1987)(or any equivalent agency regulation or contract clause), whichever is applicable. You have only those rights provided for such
Software and Documentation by t he applicable FAR or DFARS clause or the HP standard software agreement for the p r oduct involved.

HP E8401A, E8403A C -Size VXI Mainframes User/Service Manual

Copyright © 1998 Hewlett-Packard Company. All Rights Reserved.

Edition 1

3

Documentation History

All Editions and Updates of t his manu al and th eir creati on da te are list ed belo w. The first Edition of the m anual is Ed ition 1. The Edition
number increments by 1 whenever the manual is revised. Update s, which are issued between Editions , contain replacement pages t o
correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of the
Update information for the previous E dition. Each new Edition or Update also inc ludes a revised c opy of this do cumentation history page.

Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . May, 1998

Safety Symbols

Instruction manual symbol affixed to

Instruction manual symbol affixed to
product. Indicates that the user must refer to

product. Indicates that the user must refer to
the manual for specific WARNING or

the manual for specific WARNING or
CAUTION information to av oid personal

CAUTION information to av oid personal
injury or damage to the product.

injury or damage to the product.

Indicates the field wiring te rminal that must
be connected to earth ground be fore

operating the equipment — protects against
electrical shock in case of fault.

WARNING

Alternating current (AC)

Direct current (DC).

Indicates hazardous voltages.

Calls attention to a procedure, practice, or
condition that could cause bodily injury or
death.

or

Frame or chassis ground terminal —typically
connects to the equipment' s metal frame.

CAUTION

Calls attention to a procedure, practice, or
condition that coul d possibly cause damage to
equipment or perman ent loss of data.

WARNINGS

The following general safety precautions must be observed during all phases of operation, service, and repair of this product. Failure to
comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and
intended use of the product. Hewlett-Packard Com pany assumes no liability for the customer's failure to comply with these requirements.

Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provided from the mains power source to the product input wiring terminals or supplied power cable.

DO NOT operate the product in an explo s ive atmosphere or in the presence of fl ammable gases or fumes.

For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type. DO NOT
use repaired fuses or short-circuited fuse holders.

Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal of
covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the
equipment sw itche d off. To av oid danger ous ele ctric al sh ock, DO NOT perfor m pro cedure s inv olving cover or shi eld remova l unles s you
are qualified to do so.

DO NOT operate damaged equipmen t: Whenever it is possible that the safety protection features built into this product have been
impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the pr oduct until
safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Office
for service and repair to ensure that safety features are maintained.

DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid and
resuscitation, is present.

DO NOT substitute parts or modify equipment: Becaus e of th e dang er of introd ucing addition al haz ards, do not i nstall subst itute pa rts
or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for service
and repair to ensure that safety features are maintained.

4

Declaration of Conformity

according to ISO/IEC Guide 22 and EN 45014

Manufacturer’s Name: Hewlett-Packard Company

Loveland Manufacturing Center

declares that the product:

Product Name: HP E8401A, E8403A C-Size VXI Mainframes
Model Numbers: HP E8401A, E8403A
Product Options: All

conforms to the following Product Specifications (preliminary):
Safety: IEC 1010-1 (1990) including Amendment 2 (1996)/EN 61010-1 (1993)

CSA C22.2 #1010.1 (1992)
UL 3111-1 (1994)

EMC: CISPR 11:1990/EN55011 (1991): Group 1 Class A

EN50082-1:1992

IEC61000-4-2: 1995 4kV CD, 8kV AD
IEC61000-4-3: 1995 3V/m
IEC61000-4-4: 1995 1kV Power Line, 0.5kV Signal Lines
ENV50141: 1993/prEN50082-1 (1995): 3Vrms
EN61000-4-5: 1995 1kV CM, 0.5kV DM
EN61000-4-8: 1993/prEN50082-1 (1995): 3 A/m
EN61000-4-11: 1994/prEN50082-1 (1995): 30%, 10ms; 60%, 100ms

Supplementary Information: The product herewith complies with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC and carries the "CE" mark accordingly.

May 6, 1998

Jim White, Quality Manager

European contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Depart-

ment HQ-TRE, Herrenberger Straße 130, D-71034 Böblingen, Germany (FAX [phone])

5

Notes:

6

Pl

ease fold and tape for ma

ili

ng

Reader Comment Sheet

HP E8401A, E8403A, VXI Mainframes User and Service Manual

Edition 1

You can help us impro ve our manuals by sharing you r comments and suggestions . In appreciation of your time, we will
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Please list the system controller, operating system, programming language, and plug-in modules you are using.

fold here

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Chapter 1

Getting Started

This chapter contains general information on the operating features of the
HP E8401A and E8403A C-Size VXI mainf rames. The foll owing table list s
the differences between these two mainframes:

Product Overview

HP E8401A Mainframe
HP E8403A Mainframe

Power Supply

(0

°C to 55 °C)

500 W 1000 W

ää

ää

Basic

Monitor

Unless otherwise specifically noted, descriptions in this manual relate to
both VXI mainframes. The designation HP E840xA refers to both VXI
mainframes.

The HP E840xA VXI mainframes are designed in full compliance with
VXIbus specification revision 1.4, VXIpl ug&play specificati on VPP-8, and
VMEbus system specification revision C.1. Additional features of the HP
E840xA mainframes include:

•Mainframe monitoring for verification of:

n

backplane voltage conditions

n

mainframe temperatures

n

fan and impeller operation

•State of the art cooling technology:

n

quiet, variable speed power supply fan and backplane impeller

n

increased static pres sur e

n

all fans operate at either full speed or in variable speed mode.

•Front Panel Diagnostic Connector for:

n

power supply voltage measurements

n

power supply and backplane temperature measurements

n

power supply fan and backplane impeller verification

•Easy maintenance:

n

easy rear panel access to power supply and cooling impeller
(either bench or rack mount operation).

n

optional air filter kit is available for harsh environments.

Getting Started 9Chapter 1

Preparing Yo ur VXI System for Use

The HP E840xA mainframes are sh ipped from the factor y ready to use. This
section describes important mainframe installation procedures.

AC Power

Requirements

WARNING The power cord is the only way to disconnect the mainframe

Positioning th e

Mainframe for

Adequate Cooling

The HP E840xA mainframes can be operated at line voltages of
90 VAC to 264 VAC, and line frequencies of 47 Hz to 66 Hz. The
mainframe can also operate at 360 Hz to 440 Hz with line voltages of
90 VAC to 132 VAC.

The mainframes ship with a power cord and with a fuse installed in the
power supply. The fuse is suita ble for all line vol tages, but is not accessible.
Appendix A contains complete input power specifications.

from AC power and, therefore, it must be accessible to the
operator at all times. When the HP E840xA mainframes are
mounted in a system cabinet, the power cord need not be
accessible since the cabinet must have its own disconnect
device.

VXI instruments are c ooled by air drawn through the back of the mainfra me
and exhausted out the sides . The po wer supply is cooled by air drawn fro m
the right side (facing t he mainframe) and exhausted out the lef t side. When
placing the mainframe on a work bench or if the mainframe is rack mounted,
provide at least a one inch clear ance at the back a nd sides to all ow for proper
air flow.

Air filters are not necessary on these ma inf ra mes. However, an optional air
filter kit (mainfr ame opti on 938 or HP E8401-80 938) is avail able f or use i n
harsh environments. The airflow is restricted less than 10% with the air filter

installed. Refer to “HP E840xA Air Filter Kit” on page 42 for installation
information.

10 Getting Started Chapter 1

Connecting the

Mainframe to a

Permanent Earth

Ground

The mainframe must be connected to a permanent earth ground for line
frequencies greater than 66 Hz. This connection is made on the back of the
mainframe:

1. Connect a 16 AWG (1.3 mm or larger) wire to the PEM nut sho wn in
Figure 1-1. The wire must be green with a yellow stripe, or bare (no
insulation). Use a m4 x 10 s crew, grounding lug, and toothed wash ers
(or toothed lug) as shown in the Figure.

2. Attach the other end of the wire to a permanent earth ground using
toothed washers or a toothed lug.

Figure 1-1. Connecting an HP E840xA Mainframe to a Permanent Earth Ground

(HP E8403 shown, HP E8401 is similar)

WARNING For protection from electrical shock when operating at

frequencies greater than 66 Hz, connect the chassis ground
terminal to permanent earth ground.

AVERTISSEMENT Risque de Choch èlectrique. Si la frèquence du secteur est

supèrieure à 66 Hz, relier la borne de masse du chassis à une
prise de terre fixe.

Getting Started 11Chapter 1

Installing VXI Instru ments

The HP E840xA mainframes have 13 slots labeled 0 through 12. Any VXI
instrument can be installed in any slot; however, slot 0 is reserved for

devices capable of providing the system’s slot 0 functionality. This
functionali ty includes:

•locating instruments installed in the mainframe

•managing (arbitrating) data flow across the backplane

•providing the system clock (SYSCLK - 16 MHz)

Examples of these devices are the HP E1406 Command Module and
embedded controllers such as the HP E623x series VXI Pentium PCs, the
HP RADEPC7B PC, and the HP E1497/E1498 V743 controllers.

Multiple instruments which combine to create a virtual instrument (e.g. a
scanning multimeter), and i nstruments which access th e backplane local bus
should be installed in adjacent slots.

1. To prevent damage to the VXI instruments, install the instruments
when power is not applied to the mainframe.

2. Insert the instrument in to the mainframe by aligning the instrument
with the card guides inside the mainframe. Slowly push the
instrument in to th e slot until it seats in the bac kplane connectors. The
front panel of the instrument should be even with the front edges of
the mainfram e.

3. Tighten the retaining screws on the top and bottom of the module.

WARNING All instruments withi n the VXI mainf rame are grounded through

the mainframe chassis. During insta llation, tighten the
instrument’ s retaining screws to secure the instrument to the
mainframe and to make the ground connection.

12 Getting Started Chapter 1

Installing C-Size

Instruments

Figure 1-2 shows the installation of C-Size instruments.

retaining
screws

extraction
levers

seat the module by

pushing in the

extraction levers

slide the module
into the mainframe
until it plugs into the
backplane co nnectors

Figure 1-2. Installing C-Size Instruments in the HP E840xA Mainframe

WARNING All instruments withi n the VXI mainf rame are grounded through

the mainframe chassis. During insta llation, tighten the
instrument’ s retaining screws to secure the instrument to the
mainframe and to make the ground connection.

Getting Started 13Chapter 1

Installing A- and

Figure 1-3 shows the installation of A- and B-size instruments.

B-Size Instruments

•HP E1403B A/B-size Module Carrier extends the P1 connector on

the VXIbus backplane and mounts the (A/B-size) modules flush with
C-size modules. This carrier is recommended for Hewlett-Packard
B-size, slave-only devices which have the P1 connector.

•HP E1407A A/B Module Carrier extends the P1and P2 connectors

on the VXIbus backplane. This carrier is recommended for B-Size,
slave-only devices which have the P1/P2 connectors.

Figure 1-3. Installing A- and B-Size Instruments in the HP E840xA Mainframe

WARNING All instruments withi n the VXI mainf rame are grounded through

the mainframe chassis. During insta llation, tighten the
instrument’ s retaining screws to secure the instrument to the
mainframe and to make the ground connection.

14 Getting Started Chapter 1

Front Panel Features

Section Indicator / Switch Description



Power

ô

Supply

On Indicator

Standby Indicator
Voltages Indicator

Green - the mainframe is turned on.

Amber - the mainframe is in standby mode; no power is applied to the VXI modules.

Green - all voltages on the VXI backplane are within ±8% of the VXI specification.

Flashing Amber - one or more voltages is out of specification. The backplane voltages
and allowed variations are listed below:

Voltage Allowed Variation Diagnostic Pin
+5V +4.875V to +5.125V 1
+12V +11.64V to +12.6V 14

-12V -12.6V to -11.64V 2
+24V +23.28V to +25.2V 15

-24V -25.2V to -23.28V 3

-5.2V -5.46V to -5.044V 16

-2V -2.1V to -1.9V 4

í

Fans

÷

Backplane

û

Diagnostic
Connector

Temp Indicator

Fan Switch

Fans Indicator

Activity Indicator

SYSFAIL Indicator

Reset Switch

Green - the power supply temperature is acceptable.

Flashing Amber - the power supply is approaching thermal shutdown. The power supply
temperature can be measured on pin 11 of the Diagnostic connector.

Full - the power supply and mainframe cooling fans are operating at full speed.

Var(iable) - the power supply and mainframe cooli ng fans are providing adequate cooling
(default setting). Fan speed is a function of the power supply temperature and the
reference temperature (Diagnostic connector pin 12). The reference temperature is a
function of ambient temperature and load.

Green - the power supply and mainframe cooling fans are operating.

Flashing Amber - the power supply fan or the mainframe cooling fan is not operating. Fan
operation can be checked using pin 13 of the Diagnostic connector.

Green - there is communication between instruments across the backplane. Off - there is
no communication between instruments on the backplane.

Flashing Amber - one or more instruments has asserted its SYSFAIL line due to a
power-on initialization failure, self-test failure, or hardware failure. SYSFAIL is asserted
momentarily at power on and during a system reset.

Pressing the reset button asserts the SYSRESET* line on the VXI backplane. When
asserted (low), this line resets the VXI system; all VXI instruments are rest to their
power-on state.

Refer to “Diagnostic Connector” on page 16.

Figure 1-4. HP E8401A and E8403A Basic Monitoring Front Panel

Getting Started 15Chapter 1

Diagnostic Connector

The 25-pin Sub-D diagnostic connector provides access to backplane
voltages, power supply and backp lane temperatures, and out put signals. The
pins are described in Table 1-1.

13

25

12

24

11

23

5

8910

2122

6

7

181920

17

3

4

15

16

1

2

14

Table 1-1. Diagnostic Connector Pin Descriptions

Pin # Function Description

1 +5 VM +5V backplane voltage monitor (high impedance). (+4.875 Vdc to +5.125 Vdc)
2 -12 VM -12V backplane voltage monitor (high impedance). (-12.6 Vdc to -11.64 Vdc)
3 -24 VM -24V backplane voltage monitor (high impedance). (-25.2 Vdc to -23.28 Vdc)
4 -2 VM -2V backplane voltage monitor (high impedance). (-2.1 Vdc to -1.9 Vdc)
5 Rem On Remote power on. See “Using the Remote Power-on Pins.”

6 +5 VC +5 VDC source output (1A maximum).
7 +12 VC +12 VDC source output (1A maximum).
8 +5 V Stdby Input for +5V STDBY (1A maximum for pins 8 and 21 combined).

9 GND Chassis ground.
10 SysReset * TTL low-true input signal causes system reset, output indicates system reset.
11 PS Temp Output voltage proportional to power supply temperature (0 VDC at 0 °C, with a rise of

10 mV per degree centigrade).

12 Ref T emp Output voltage proportional to backplane temperature (0 VDC at 0 °C, with a rise of 10 mV

per degree centigrade). A function of the ambient temperature and load.
At no load, T
T

~ 14 °C + ambient. At full load and low fan speed, T

ref

13 Fans OK * TTL low-true output voltage indicates power supply and backplane cooling fans are

operating.
14 +12 VM +12V backplane voltage monitor (high impedance). (+11.64 Vdc to +12.6 Vdc)
15 +24 VM +24V backplane voltage monitor (high impedance). (+23.28 Vdc to +25.2 Vdc)
16 -5.2 VM -5.2V backplane voltage monitor (high impedance). (-5.46 Vdc to -5.044 Vdc)
17 GND Chassis ground.
18 REM Rtn Remote power switch return. See “Using the Remote Power-On Pins.”.
19 V OK * TTL low-true output voltage indicating the +5V, ± 12V, ± 24V, -5.2V, and -2V power supply

20 GND Chassis ground.
21 +5 V Stdby Input for +5V STDBY (1A maximum for pins 8 and 21 combined).
22 GND Chassis ground.
23 ACFAIL * TTL low-true output asserted by the mainframe power monitor at power down or whenever

24 GND Chassis ground.
25 RSV

voltages are within ± 8% of its allowed variation.

a loss of power is detected.

Reserved.

~ 2 °C + ambient. At full load and high fan speed,

ref

ref

~ 20 °C + ambient.

16 Getting Started Chapter 1

+5VC

(pin 6)

The +5 volt output allows you to power external TTL circuits if required.
The maximum current allowed from this supply is 1.0A

+12VC

(pin 7)

+5V STDBY

(pins 8, 21)

SYSRESET*

(pin 10)

ACF AIL*

(pin 23)

The +12 volt output all ows you t o power ex tern al cir cuits , charge a batt ery,
or power relays if requir ed. The maximum cur rent allowed fro m this supply
is 1.0A

This provides an input to the mainframe backplane for a +5V DC standby
power source. This may be from a separate battery or power supply. The
maximum current allowed is 1A to tal (pins 8 and 21 wired in para llel). It can
be used to power timers and other ci rcuits when the mainframe is in standby
mode.

This pin provides an extension of the VXI backplane SYSRESET* signal
line. It can be used to monitor for SYSRESET* or to send a SYSRESET*
tot he backplane. Shorting this lin e to ground asser ts the SYSRESET* sig nal
to the system. If you u se an exte nsion cabl e from the Diagnosti c Connector ,
make certain that you do not violate the VXI backplane electrical
specifications (i .e. keep the cab le as short as possible, buffer the sig nal line,
etc.).

This pin lets you monitor the ACFAIL* signal from the VXI backplane. If
you use an extension cable f rom the Diagnostic Connector , make certain that
you do not violate the VXI bac kplane elect rica l speci fica tions (i.e. ke ep th e
cable as short as possible, buffer the signal line, etc.).

Getting Started 17Chapter 1

Using the Remote

Power-On Pins

Resistor

The remote power-on pins ( pins 5 and 18) of the Diagn ostic Connector allow
you to turn the mainf rame on and off without using t he front panel On/Stdby
switch. With the On/ Stdby switch in the Stdby (off ) position, co nnecting pin
5 to pin 18 on the diagnostic connector turns the mainframe on.
Disconnecting pin 5 from pin 18 turns the mainframe off.

Ω

0

Figure 1-5. Remote Standby Switch Wiring.

Note Pin 18 is ground in the HP E8401 and E8403 mainframes. Therefore,

you only need to ground pin 5 to turn the mainframe on.

18 Getting Started Chapter 1

Disabling the

On/Stdby Switch

The front panel On/Stdby s witch is disa bled by removing surface mount 0Ω
resistor located on the front monitor board (see Figure 1-6). The resistor is
labeled:

REM PWR JUMPER.

Location of 0Ω resistor

Figure 1-6. Disabling the On/Stdby Switch

Caution After removing the 0

resistor from being re-inst alled to re-enable the On/Stdby
switch.

To access the basic monitor board and resistor:

1. Turn off the mainframe and remove the power cord.

2. Remove the re ar panel. Refer to “Removing the Rear Pan el from the

Mainframe” on page 45 for instructions.

3. Remove the mainframe cover by removing the 10 (five on each side)
m3x6 flat head torx screws.

Ω

resistor, heat damage may prevent the

Getting Started 19Chapter 1

4. Remove the 0Ω resistor by heating both sides simultaneously with
soldering irons. Separate the resistor from the board by gently
pressing the tips of the soldering irons together.

5. Save the resistor in order to re-enable the On/Stdby switch. Again,
heat damage may prevent the resistor from being re-installed.

6. Replace the mainframe c over a nd rea r panel . Make ce rtai n that all ten
mainframe cover screws and all 14 rear panel screws are secured.

20 Getting Started Chapter 1

Mainframe Options and Accessories

Table 1-2. HP E840xA VXI Mainframes options and accessories

Description Option Number Product

Number

Cable Tray Kit Option 914 HP E8400-80914
Tinted Acrylic Door Kit Option 915 HP E8400-80915
Backplane Connector Shields Option 918 HP E8400-80918
Intermodule Chassis Shield Kit N/A HP E8400-80919
Standard Rack Mount Adapter Kit

(for recess, flush, or forward rack mounting)
Flush Rack Mount Kit Option 924 HP E8400-80924
VXIplug&play (VPP-8) Compatible Rack Mount Kit Option 925 HP E8400-80925
EMC Filler Panel (1-slot wide) N/A HP E8400-60202
Air Filter Accessory Kit Option 938 HP E8400-80938
Support Rail for Standard Rack Mount Adapter or Flush Rack Mount

Kit
Support Rail for VXIplug&play (VPP-8) Compatible Rack Mount Kit N/A HP E3663A
Rack Slide Kit for Standard Adapter Kit or VXIplug&play (VPP-8)

Compatible Rack Mount Kit

Option 923 HP E8400-80923

N/A HP E3664A

N/A HP 1494-0411

Getting Started 21Chapter 1

22 Getting Started Chapter 1

Rack Mounting and Option Installation

Chapter Overview

This chapter contains procedures for rack mounting the mainframe and for
installing the hardware options available with the mainframe. The sections
in this chapte r include:

• Rack Mounting the HP E840xA Mainframe. . . . . . . . . . . . . 23

• Installing the Cable Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

• Installing the Tinted Acrylic Door . . . . . . . . . . . . . . . . . . . . 36

• Installing the Intermodule Chassis Shields. . . . . . . . . . . . . . 38

• Installing the Backplane Connector Shields. . . . . . . . . . . . . 40

• HP E840xA Air Filter Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Rack Mounting the HP E840xA Mainframe

The HP E840xA is mounted into s tandard EIA cabinets using the r ack mount
adapter options and support rail or rack slide kit shown in Table 2-1.

Chapter 2

Table 2-1. HP E840xA Rack Mount Options and Kits.

Rack Mount Adapter Options Rail and Rack Slide Kits

HP E840xA Standard Adapter Kit
Option 923 (kit p/n E8400-80923)

HP E840xA Flush Mount Adapter Kit
Option 924 (kit p/n E8400-80924)

HP E840xA VXIplug&play Compliant
Adapter Kit
Option 925 (kit p/n E8400-80925)

* This adapter kit can also be used with the HP E3665A rail kit.

When rack mounting the mainfr ame, you must or der an ad apter option and
the rail or rack slide kit supported by the adapter.

Support Rail Kit HP E3664A
or
Rack Slide Kit HP p/n 1494-0411

Support Rail Kit HP E3664A

Support Rail Kit HP E3663A*
or
Rack Slide Kit HP p/n 1494-0411

Rack Mounting and Option Installation 23Chapter 2

Parts List The parts included wit h each ra ck mount ad apter op tion and th e support rail

and slide rail kits are shown in Table 2-2.

Table 2-2. Rack Mount Adapter, Support Rail, and Rack Slide Parts Lists.

Quantity Description Part Number

HP E840xA Standard Adapter Option 923 (kit p/n E8400-80923)

1 Rack Mount Adapter (left) E8400-61203
1 Rack Mount Adapter (right) E8400-61204
2 Handles *
4 Handle Screws - m5x10 flat head 0515-1020
8 Adapter-to-Mainframe Screws - m5x8 pan head 0515-0979
4 Adapter Dress Screws 0570-1577
4 Channel Nuts (for adapter dress screws) 0590-0804

HP E840xA Flush Mount Adapter Option 924 (kit p/n E8400-80924)

1 Rack Mount Adapter (left) E8400-61205
1 Rack Mount Adapter (right) E8400-61206
4 Adapter-to-Mainframe Screws - m5x8 pan head 0515-0979
4 Adapter Dress Screws 0570-1577
4 Channel Nuts (for adapter dress screws) 0590-0804

HP E840xA VXIplug&play Compliant Adapter Option 925 (kit p/n E8400-80925)

1 Rack Mount Adapter (left) E8400-61207
1 Rack Mount Adapter (right) E8400-61208
4 Fixture Screws - m5x12 flat head 0515-0956
8 Adapter-to-Mainframe Screws - m5x8 pan head 0515-0979
6 Adapter Dress Screws 0570-1577
6 Channel Nuts (for adapter dress screws) 0590-0804

Support Rails (HP E3664A)

2 Support Rails E3664-00001
4 Channel Nuts (for support rail-to-rack) 0590-0804
4 Support Rail-to-Rack Screws - 0.5x10.32 2680-0278

Rack Slides (HP p/n 1494-0411)

2 Rack Slides **
8 Rack Slide-to-Adapter Screws - m5x8 flat head 0515-1019
8 Channel Nuts (for slide rails) 0590-0804
4 Rack Slide-to-Rack Front Screws - m5x12 flat head 0515-0956

4 Rack Slide-to-Rack Rear Screws - m5x12 pan head 0515-0904
* AMATOM p/n 10939-A-032-2
** General Devices p/n CC1502-99-0016

24 Rack Mounting and Option Installation Chapter 2

Rack Mounting the

HP E840xA using

Support Rails

Note If you ordered Cable Tray Option 914, refer to page 34 and inst al l the tray

Procedure 1. Attach the handles to the adapters using the m5x10 flat head screws

This section contains instr ucti ons for mounti ng the HP E840xA mainframe
in an EIA cabinet using the HP E3664A support rail kit. The E36 64A kit can
be used with any of the rack mount adapter options; however, the E3664A
is only compatible with HP cabinets. The following procedures apply to all
adapters, with adapter-specific information noted where necessary.

before rack mo unting the mainframe.

(Figure 2-1). Handles are included only with the HP E840xA
Standard adapters (Option 923).

m5x10 Flat Head Screws

Figure 2-1. Attaching Handles to the Adapters (Option 923 - kit p/n E8400-80923).

Rack Mounting and Option Installation 25Chapter 2

2. Using the rack mount adapters as temp lates, position the adapters on

the rack’s vertical rail s where the mai nframe is to be mounted. Align
the adapter holes over th e "center " holes of the EIA r ack units (Fi gure
2-2).

Note If you are using the HP E840xA VXIplug&play Compliant adapters

(Option 925), position the adapters such that all three mounting holes are
directly over holes on the rack’s vertical rails, and that the adapter flanges
cover nine full EIA rack units with no overlap.

3. Slide channel nuts over the rack holes to be used by the rack mount
adapters.

EIA Rack Unit

Center Holes

Rack Unit

Center Hole

Rack Mount

Adapters

EIA Rack Uni t

Center Holes

Figure 2-2. Positioning the Mainframe in the Rack .

26 Rack Mounting and Option Installation Chapter 2

4. Attach the support rails to the rack’s inside vertical rails. The support
rails must be positioned behind the bottom channel nuts installed in
Step 3 (Figure 2-3). Use four channel nuts and the four 0.5x10-32
support rail-to-rack pan head screws to secure the rail.

Position Rail Behind
Bottom Channel
Nut

Figure 2-3. Attaching the Support Rails to the Rack.

Rack Mounting and Option Installation 27Chapter 2

0.5x10.32

Pan Head screws

5. Attach the rack mount adapters to the mainframe using the m5x8 pan
head screws provided. To mount the mainframe flush with the rack
front, begin with the 3rd hole from the front of the adapter (Figure
2-4).

With the standard ad apters (Optio n 923), th e mainframe ca n be recess
mounted up to 270.7 mm (1 0.6 inc hes ), or extende d out from th e rac k
up to 147.6 mm (5.8 inches) in 12.3 mm (approximately 1/2 inch)
increments.

The rack mount adapters for the VXI compliant and flush mount
options are also shown in Figure 2-4.

Standard

Adapter

Option 92 3

VXI Plug & Play

Compliant

Adapter

Option 925

Recess Mount in 12.3

(~1/2 inch) Increments

m5x8 Pan Head

Flush Mount

Adapter

Option 924

Screws

Figure 2-4. Attaching the Rack Mount Adapter to the Mainframe.

28 Rack Mounting and Option Installation Chapter 2

6. Remove the mainframe f eet by lifting the tabs and sliding the feet
towards the center of the ma inframe.

7. With one person on each side of th e mainframe, lift the mainframe
onto the support rail s. Slide the ma inframe in to th e rack until the ra ck

mount adapter flanges are against the rack’s vertical rails. Secure the
mainframe to the rack using the adapter dress screws.

WARNING To prevent injury during rack mounting, the mainframe should

be empty and two people should lift the mainframe into the
rack.

Rack Mounting the

HP E840xA Using

Rack Slide Rai ls

Procedure 1. Attach the handles to the sta ndard adapters usi ng the m5x10 flat head

This section contains instr ucti ons for mounti ng the HP E840xA mainframe
in an EIA cabinet
which is used with either the Standard adapters (Option 923) or the
VXIplug&play Compliant adapters (Option 925), allows you to extend the
mainframe from the cabinet for easier access to installed instruments.

The following procedures apply to the adapter kits listed above, with
adapter-specific i nformation noted where neces sary. The rack slide kit is not
used with the flush mount adapters (Option 924).

screws (Figure 2-5). Handles are included only with the HP E840xA
Standard adapters (Option 923).

using the rack slide kit (p/n 1494-0411). The rac k slide kit,

m5x10 Flat Head Screws

Figure 2-5. Attaching Handles to the Adapters (Option 923 - kit p/n E8400-80923).

Rack Mounting and Option Installation 29Chapter 2

2. Using the rack mount adapters as temp lates, position the adapters on

the rack’s vertical rail s where the mai nframe is to be positioned. B e
sure to align the adapter holes over center holes on the vertical rail
(Figure 2-6).

If you are using the HP E840xA VXIplug&play Compliant adapters
(Option 925), positi on t h e ad apt ers s uch tha t al l t h r ee mount ing hol es
are directly over holes on the rac k’s vertical rails, and that the adapte r
flanges cover nine full EIA rack units with no overlap.

3. Slide channel nuts over the rack center holes to be used by the rack
mount adapters.

EIA Rack Unit

Center Holes

Rack Unit

Center Hole

Rack Mount

Adapters

EIA Rack Unit

Center Holes

Figure 2-6. Positioning the Mainframe in the Rack .

30 Rack Mounting and Option Installation Chapter 2

4. From the bottom channel nut inserted in Step 3, count up four holes.
Slide a channel nut over the cor re sponding hole on the inside vertical
rail (Figur e 2-7). Install a second channel nut on the inside rail four
holes above the firs t nut . Repea t for the other rai l. In stall chan nel nu ts
on the corresponding holes on the rear inside rails.

Left Vertical Rail

(Front)

Right Vertical Rail

(Front)

Channel Nuts On

Center Holes

Channel Nuts
For Rack
Slides

Four

Holes

Channel Nuts On

Center Holes

Figure 2-7. Positioning the Rack Slides (using Option 923 - standard adapters).

Rack Mounting and Option Installation 31Chapter 2

5. Remove the chassis section from the intermediate section (Figure
2-8). (The chassis section wil l be con nect ed to the mainframe in Step

7.) Slide the intermediate section back into the stationary section.

Rack FrontRack Rear

Stationary Section Stationary Section Chassis Section

(Right Rack Slide Shown)

Depress From Back

Side To Remove

Figure 2-8. Removing the Rack Slide Chassis Section from the Intermediate Section.

6. Attach the stationary se ction to the rac k’s front inside rail through the
channel nuts. Use two m5x12 flat head screws. Attach the stationary
section to the rear inside rail using two m5x12 pan-head screws
(Figure 2-9).

Mounting Holes When Using

Rack Front Rack Rear

the VXI Plug&Play Compliant Adapters

(Left Rack Slide Shown)

m5x12 flat head screws

(Standard Adapter Kit)

m5x12 Pan Head Screws

(Standard Adapter Kit)

Figure 2-9. Installing the Rack Slide Stationary Sections.

32 Rack Mounting and Option Installation Chapter 2

7. Attach the rack mount adapters to the mainframe using the eight
m5x8 pan head screws provided. To mount the mainframe flush with
the rack fro nt, begin with the 3rd hole from the front of the adapter
(Figure 2-10).

The mainframe can be recess mounted up to 270.7 mm (10.6 inches)
in approximately 12.3 mm (1/2 inch) increments. Note that in some
recess positions, the front screw attaching the rack slide adapter may
have to be removed.

8. Attach the chassis sections to the rack mount adapters using four
m5x8 flat head screws per side (Figure 2-10).

m5x8 Pan

Head Screws

Chassis

Sections

Standard Rack Mount

Adapter (Option 923)

VXI Plug&Play Compliant Rack

Mount Adapter (Option 925)

m5x8 Flat

head Screws

Chassis
Sections

m5x8 Flat

head Screws

Figure 2-10. Attaching the Rack Mount Adapters and Chassis Sections to the Mainframe.

9. If additional rack space is required for other instruments, remove the
mainframe fee t by lifting the tabs and slid ing the feet towards the
center of the mainframe.

Rack Mounting and Option Installation 33Chapter 2

10.Slide the rack slide intermediate sections out from the rack slide
stationary sectio ns until they loc k into pl ace. W i th one per son on eac h
side, lift the mainframe and slide the chassis sections into the
intermediate sections until the chassis sections lock into place. Slide
the mainframe into the rack until the rack mount adapter flanges are

against the rack’s vertical rails. Secure the mainframe to the rack
using the adapter dress screws.

WARNING To prevent injury during rack mounting, the mainframe should

be empty and two people should lift the mainframe into the
rack.

Installing the Cable Tray

The HP E840xA Cable Tray (Option 914) allows you to route VXI
instrument cables and wir es under the mainframe. The cab le tray can be used
when the mainframe is on a bench top or when mounted in a standard EIA
cabinet. The tray is compat ible wi th the su pport rai l (HP E3664A) a nd rack
slide (HP p/n 1494-0411) kits.

Note If you ordered the support rail (HP E3664A) or rack slide (p/n 1494-0411)

kit, install th e cable tray b efore rack mounting the mainframe.

Parts List The parts included in Option 914 are shown in Table 2-3.

Table 2-3. HP E840xA Cable Tray Option 914 Parts List.

Quantity Description Part Number

1 Cable Tray E8400-04102
4 Cable Tray-to-Mainframe Screws -

m5x8 pan head

0515-0979

Procedure 1. Remove the four mainframe feet by lifting the tabs and moving each

foot towards the center of the mainframe.

2. Attach the cable tray to the mainf ra me as shown in Figure 2-11 using
four m5x8 pan head sc rews. Sele ct the tray hol es based on the a mount
of cable clearance required.

The bottom mounting hol es position the tray o ver one additional EIA
rack unit (44.5 mm), the top hol es positi on the tra y over two EIA ra ck
units, and the center holes pos ition the tray bet wee n one and two EIA
rack units.

34 Rack Mounting and Option Installation Chapter 2

Note If the mainframe is mounted extending out from the rack, install the cable

tray with the notched end at the front of the mainframe.

3. If the mainframe will be placed on a bench top, attach the mainframe
feet to the cable tray. If the mainframe is to be rack mounted, you can
save rack space by leaving the feet off.

Select Holes Based
on Cable Clearance

Required

Holes for Mounting

Customer-Supplied

Interface Panel

Note Holes are provided at each end of the cable tray for mounting a

m5x8 Pan Head Screws

Figure 2-11. Installing the Cable Tray.

customer-supplied interface panel. The maximum height of the panel must
be 41.275 mm for a one EIA ra ck unit c able tray po sition, o r 85.725 mm for
a two EIA rack unit cable tray position.The panel width cannot exceed 424
mm. The four holes across the bottom are 101.6 mm center-to-center, and
centered on the tray. The side holes are 34.9 mm center-to-center, with the

bottom hole 25.4 mm above the tray’ s ins ide surface. All holes are 12.7 mm
from the edge and have a diameter of 3.175 mm.

Rack Mounting and Option Installation 35Chapter 2

Installing the Tinted Acrylic Door (Option 915)

This procedure describes how to install the Tinted Acrylic Door on the HP
E840xA mainframe. The door requires the Standard Ad apter Kit (p/ n
E8400-80923), and is compatible with either the support rail kit (HP
E3664A) or the rack slide kit (p/n 1494-0411).

Parts List The parts included in Option 915 are shown in Table 2-4.

Table 2-4. HP E840xA Option 915 Parts List.

Quantity Description Part Number

1 Acrylic Door Assembly E8400-09301
2 Hinges 3110-0409
1 Door Latch, Lock, and Keys 1390-0891
2 Rubber Door Stops 0403-0002
4 Screws - m5x10 flat head 0515-1020
4 Screws - m3x8 pan head 0515-0897

Note The door requires the mainframe to be recess mounted a minimum of

111 mm (4.36") or up to a maximum of 270.7 mm (10.6 inches) to
accommodate wiring terminals on the VXI instruments. When using the
minimum recess distance, field wiring cables must enter/exit the
instruments through the top and/or bottom openings only.

Procedure 1. Recess mount the mainframe a minimum of 111 mm

(4.36 inches) using the Standard Adapter kit and either the support
rail kit (

page 25) or rack slide kit (page 29).

Note For the minimum recess distance, attach the rack mount adapters to the

mainframe beginning with the 12th hole from the front of the adapter.

2. If necessary, remove the dress screws (0570-1577) securing the
adapters to th e rack.

3. Attach the hinge pins to the right rack mount adapter using four
m5x10 flat head screws (Figure 2-12). Attach the rubber door stops
and door latch to the left a dapt er usi ng four m3x8 pan head screws as
also shown in Figure 2-12.

36 Rack Mounting and Option Installation Chapter 2

Rubber Door

Stop

m3x
Pan

Head

Screws

Door

Latch

m5x10 Flat

Head Screws

m5x10 Flat

Head Screws

Hinge

Pins

Rubber

Door
Stop

Figure 2-12. Installing the Acrylic Door Hinges, Door Stops, and Latch Keeper.

4. Slide the mainframe into the rack until the rack mount adapters

contact the rack’s vertical rails.Start the dress screws but do not
tighten.

5. Install the door asse mbly by pl acing the h inges ove r the hinge pins on
the right adapter. Adjust the door for squareness and clearance by
holding the door in place while tightening the dress screws.

6. Adjust the latch keeper so that the door latches as it makes contact
with the rubber door stops.

Note Once installed and adjusted, the door can be removed when necessary by

lifting the door off the hinge pins.

Rack Mounting and Option Installation 37Chapter 2

Installing the Intermodule Chassis Shields

This procedure describes how to install kit p/n E8400-80919 - Intermodule

Chassis Shields in the HP E840xA mainframe. The chassis shield is HP’s
implementation of VXI revision 1.4, specification B.7.3.4 that allows
grounded shielding between mainframe slots. The shield is used to isolate
VXI modules that genera te electromag netic inter ference (E MI) at exces sive
levels, or to protect VXI measurement modules from noise sources.

WARNING Do not install intermodule chassis shields while the mainframe

is turned on or plugged into an AC power source.

Parts List The parts included in the E8400-80919 kit are shown in Table 2-5.

T able 2-5. E8400-80919 Parts List.

Quantity Description Part Number

1 Chassis Shield E8400-00600

8* Grounding Spring E8400-09101

* Includes 4 extra springs.

Procedure

Note Each mainframe slot has top and bottom chassis shield guides (Figure

2-13). Chassis shields should be installed on both sides of an instrument
generating interference/noise, or installed on both sides of a sensitive
instrument.

1. Insert grounding springs into the four sockets (two top, two bottom)
along the shield guides (Figure 2-13). Use a small flat blade
screwdriver to secure each spring under the socket tab.

Use the chassis shield to cover the vent holes inside the mainframe
when installing grounding springs in the top guide sockets. This
prevents the springs from falling into the mainframe if they are
accidently dropped.

2. Align the chassis shield with the shield guides and gently slide the
shield into the mainfr ame. Be careful not to crimp the front grounding
springs with the edge of the shield. Slide the shield in until it reaches
the end of the shield guide.

38 Rack Mounting and Option Installation Chapter 2

use a small screw driver
to secure spring under

socket tab

grounding spring socket

VXI module guide

chassis shield guide

Figure 2-13. Installing the Grounding Springs and Chassis Shield.

Rack Mounting and Option Installation 39Chapter 2

Installing the Backplane Connector Shields

This procedure describes how to install backplane connector shields

(kit p/n E8400-80918 in the HP E840xA mainframe. The shields are HP’s
implementation of VXI revision 1.4, specification B.7.2.3 which ensures
compliance with RFI levels specified in standards EN55011 and CISPR11.

Note A number of VXI instrume nts require sh ields for compliance with

EN55011 and CISPR11. Refer to the instrument documentation to
determine if shields are required.

WARNING Do not install backplane connect or shields while the mainframe

is turned on or plugged into an AC power source.

Parts List The parts included in the E8400-80918 kit are shown in Table 2-6.

Table 2-6. HP E8400-80918 Parts List.

Quantity Description Part Number

54* Torx Head Screw - 4-20x.25 0624-0702

26 Backplane Connector Shield E1400-80601

* Includes two extra screws

Procedure 1. Position the shields over the ba ckplane c onnectors as shown in Figure

2-14. Two connector shields and four screws are required for each
slot.

40 Rack Mounting and Option Installation Chapter 2

Backplane

Shields

Backplane

Backplane

Figure 2-14. Positioning the Backplane Shields on the Connectors.

2. To install the screws, firmly press the screw onto a Torx driver. This
prevents the screw from falling off as you reach into the mai nframe.
Placing a sheet of paper under the backplane connectors will catch
screws if they fall.

Backplane

Shields

3. Tighten the screws by turning them clockwise. The screws are
thread-forming and will go in slowly when you install them the first
time.

Rack Mounting and Option Installation 41Chapter 2

HP E840xA Air Filter Kit

An optional air filter kit can be purchased for the HP E840xA mainframe.
Figure 2-15 shows how to install the kit.

1. Remove the four screws from the rear panel as shown in Figure 2-15.

2. Install the bottom Air Filter Bracket as shown. Use the two pan-head
screws included with the Air Filter Kit.

3. Install th e Air filter. Carefully place the filter into the bottom bracket.

4. Attach the top bracket to the mainframe. Hand-tig hten the
thumbscrews; do not over-tighten.

1 2

12

Remove and Discard

4 Screws

Insert Filter Into
Bottom Bracket

3 4

Supplied Pan

Head Screws

Place Top Bracket

Over the Filter and

Secure Thumb-Screws

Figure 2-15. Installing the Optional Air Filter Kit

42 Rack Mounting and Option Installation Chapter 2

Chapter Overview

Problem Isolation

Chapter 3

Servicing Your Mainframe

This chapter contains information for troubleshooting and replacing
selected components of the HP E840xA VXI mainframe. This chapter
includes the following info rmation:

• Problem Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

• Replacing Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

• Replacement Power Cords . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table 3-1 lists symptoms which could appear in the mainframe over time.
The assembly most likely r esponsib le for the sympt om is also l isted. Not ice
that customer repair of the HP E840xA mainframes is l imited to replacement
of the Basic Monitor printed circuit (PC) assembly, power supply, and
impeller (module fan) assemblies.

WARNING There are no serviceable parts inside the mainframe. Repair is

limited to replacement of the monitor printed circuit
assemblies, power supply, power supply fan, and impeller
(backplane fan). Replacement of these components must be
performed at a static-contr olled workstation by trained service
personnel only.

No Power Line Fuse There are NO replaceable power line fuses on the HP E8401A and E 8403A

VXI Mainframes. If the mainf rame power suppl y fails to ope rate, the powe r
supply should be repla ced. Exchange assemblies are available; refer t o Table
3-2.

Servicing Your Mainframe 43Chapter 3

Isolating Problems

Table 3-1. Isolating Problems Within the HP E840xA Mainframe.

Symptom Action

Flashing Voltages Indicator One or more backplane voltages may be out of specification. Check

diagnostic connector pins 1, 2, 3, 4, 14,15,16. Check for a loose cable
between the basic monitor assembly and the backplane. Replace power
supply if any voltage remains out of specification.

Flashing Temperature Indicator Power supply temperature is high. Mainframe is nearing automatic shutdown.

Check for proper air flow and clearance around the power supply fan(s).

Flashing Fans Indicator Power supply fan or mainframe impeller has failed. Visually inspect to

determine which fan is not rotating. Turn off mainframe to avoid possible
overheating. Power supply fans are not individually replaceable; replace the
power supply.

Monitor indicators are off and
fans do not operate when On
button is pressed.

No monitor indicators when
mainframe is turned on.

The SYSFAIL indicator will come on and remain on when a VXI module installed in the mainframe fails.

Check for a loose cable between the basic monitor assembly and the
backplane. Replace the basic monitor board.

Check diagnostic connector pins 1, 2, 3, 4, 13, 14, 15, 16 to determine if
backplane voltages are within specification and power supply and backplane
impeller are functioning. Replace the basic monitor PC board.

Replacing Assemblies

This section contains instructions for replacing the basic monitor, power
supply, power supply fan, and impell er.These assemblies ar e available from
Hewlett-Packard under the part numbers shown i n Table 3-2. Contact the HP
TMO Business Center at 1-8 00-829-4444 to obtai n replace ment assembl ies.

Table 3-2. HP E8400A Replacement Assemblies

Assembly HP E8401A

Part Number

Basic Monitor E8400-66502 E8400-66502
Power Supply E8401-69204

500 W Power Supply

Exchange Assembly

HP E8403A

Part Number

E8403-69204

1000W Power Supply

Exchange Assembly

Impeller (backplane fan) E8400-68501 E8400-68501

44 Servicing Your Mainframe Chapter 3

Removing the Re ar

Panel from the

For most servi ce work, you will need to remove the rear p anel from the
mainframe. Figure 3-1 shows the procedure.

Mainframe

1. Remove the 14 screws from the rear panel.

2. The rear panel hinges at it to p; rot ate th e panel upward. Pul l the p anel
out from the mainframe.

3. To replace the panel, insert the three tabs into the slots at the top of
the mainfram e. Rotate the panel down until it is flush ag ainst the
mainframe. Replace all 14 screws.

Figure 3-1. Removing / Replacing the Mainframe Rear Panel

(HP E8403 shown, HP E8401 is similar)

Servicing Your Mainframe 45Chapter 3

Removing the

1. Turn off the mainframe and remove the power cord.

Mainframe Cover

2. Remove the re ar panel. Refer to “Removing the Rear Pan el from the
Mainframe” on page 45 for instructions.

3. Remove the mainframe cover by removing the ten m3x6 flat head
torx screws (five on each side of the mainframe). Refer to Figure 3-3.

Remove 5 screws from each side.

Figure 3-2. Removing the Mainframe Cover

46 Servicing Your Mainframe Chapter 3

Replacing the Basic

1. Turn off the mainframe and remove the power cord.

Monitor Board

2. Remove the re ar panel. Refer to “Removing the Rear Pan el from the
Mainframe” on page 45 for instructions.

3. Remove the mainframe cover by removing the ten m3x6 flat head
torx screws (five on each side of the mainframe). Refer to Figure 3-3.

Figure 3-3. Removing the Basic Monitor Board.

4. Remove the two male/female standoffs connecting the Diagnostic
connector to the mainframe chassis.

5. Remove the ribbon cable and the two m3x8 torx screws from the
basic monitor board.

6. Install the replacement monitor board and re-insert the standoffs,
screws, and ribbon cable removed in the previous steps.

7. Replace the mainframe cover. Make certain that all 10 m3x6 fla the ad
torx screws are secured.

8. Replace the rear panel. Make certain that all 14 screws are secured.

Servicing Your Mainframe 47Chapter 3

Replacing the

1. Turn off the mainframe and remove the power cord.

HP E8401A Power

Supply

2. Remove the re ar panel. Refer to “Removing the Rear Pan el from the
Mainframe” on page 45 for instructions.

3. Gently pull the supply out from the connectors on the backplane
adapter boar d.

Figure 3-4. Removing the HP E8401A Power Supply.

4. Install the exchange power supply. Keep the replacement power
supply to the far right in the mainframe. Make sure the supply is
firmly inserted into the backplane connectors.

5. Replace the rear panel. Make certain that all 14 screws are secured.

48 Servicing Your Mainframe Chapter 3

Replacing the

1. Turn off the mainframe and remove the power cord.

HP E8403A Power

Supply

2. Remove the re ar panel. Refer to “Removing the Rear Pan el from the
Mainframe” on page 45 for instructions.

3. Using the rings on the power supply, gently pull the supply out from
the plastic connectors on the backplane adapter board. Do not carry
the supply using the rings.

Figure 3-5. Removing the HP E8403A Power Supply.

4. Install the exchange power supply. Keep the replacement power
supply to the far right in the mainframe. Make sure the supply is
firmly inserted into the backplane connectors.

5. Replace the rear panel. Make certain that all 14 screws are secured.

Servicing Your Mainframe 49Chapter 3

Replacing the

1. Turn off the mainframe and remove the power cord.

Impeller

2. Remove the re ar panel. Refer to “Removing the Rear Pan el from the
Mainframe” on page 45 for instructions.

3. Disconnect the impeller wires from the backplane by gently pulling
down on the wire housing (Figure 3-6). Note the position of the
connector for re-installation.

Caution Static sensitive components on the mainframe backplane are

exposed when the impeller cover is removed. Use care when
removing / inserting the impeller wires.

4. Loosen the two m4x8 pan head torx screws which sec ure the impell er
assembly to the mainframe.

5. Lift the impeller assembly off the screw locators and gently pull the
impeller assembly out from the mainframe (Figure 3-6).

Remove two screws

Figure 3-6. Removing / Installing the Impeller.

50 Servicing Your Mainframe Chapter 3

6. Install the replacement impeller assembly by lining up the horizontal
slots on the bottom of the impelle r as sembl y with the raised edges on
the mainfram e. Slide the impeller assembly into the mainframe until
the impeller housing is over the screw locators.

7. Reconnect the impeller wires to the adapter board. Tighten the
impeller screws into the screw locators.

8. Replace the rear panel. Make certain that all 14 screws are secured.

Replacement Power Cords

Table 3-3 lists the power cords rated for use with the HP E840xA
mainframes. If it becomes necessary to replace the power cord, obtain the
appropriate cord listed in the table or use a cord with the same voltage and
current ratings.

Table 3-3. Replacement Power Cords for the HP E8401 and E8403 VXI Mainframes

Country Voltage Part Number

for HP E8401

U.K. 250 VAC 8120-1351 8120-1351 10A
Australia 250 VAC 8120-1369 8120-1369 10A
Europe 250 VAC 8120-1689 8120-1689 10A
U.S./Canada 125 VAC 8120-1378

U.S./Canada 250 VAC 8120-5338 8120-5338 10A
Switzerland 250 VAC 8120-2104 8120-2104 10A
Denmark 250 VAC 8120-2956 8120-2956 10A
Japan 100 VAC 8120-4753

India / South
Africa

250 VAC 8120-4211 8120-4211 10A

Part Number

for HP E8403

8120-2371

8120-5400

Rated Amps

10A HP E8401
13A HP E8403

12A HP E8401
15A HP E8403

Power cords supplied by HP have polarities matched to the power input
socket on the instrument:

L = line or active conductor (also called "live" or "hot"
N = neutral or identified conductor
E = earth or safety ground

Servicing Your Mainframe 51Chapter 3

52 Servicing Your Mainframe Chapter 3

Product Descriptions

Model Description Power Supply Monitoring

HP E8401A 13-Slot C-size VXI Mainframe 500W Available Power Basic Monitoring
HP E8403A 13-Slot C-size VXI Mainframe 1000W Available Power Basic Monitoring

Appendix A

HP E8401A, E8403A

Product Specifications

General

Specifications

Mechanical

Specifications

VXI Device Type:Mainframe
Data Transfer Bus: per VXIbus Spec, Rev 1.4
Size: C
Slots: 13 available
Connectors: P1 / P2
Shared Memory: n/a
VXI Busses: per VXIbus Spec, Rev 1.4

Module Size:

Thirteen (13) C-Size slots. The mainframe also accepts A- or B-size
modules using the HP E1403 or E1407 Adapters.

Mainframe Dimensions:

Height: 352 mm (13.9 inches) (8 EIA rack units)
Width: 424.5 mm (16.7 inches)
Depth: 631 mm (24.9 inches)
Weight with no modules installed:

E8401A: approximately 19 Kg (42 lbs)
E8403A: approximately 24 Kg (53 lbs)

Maximum Module Weight:

3.5 Kg (7.7 lbs) per slot to comply with shock and vibration specifications.
Heavier modules may b e installed if shock and vibrat ion environment is less
severe.

HP E8401A, E8403A Product Specifications 53Appendix A

Output Power Specifications

Total Available and

Usable Power

Peak and Dynamic

Current

Product Te mperature Available Powe ra

90-264VAC

E8401A 0-55°C 686 W 500 W 500 W
E8403A 0-55°C 1,902 W 1,000 W 950W

a.Sum of voltages times currents. Not always usable due to thermal protection

shutdown.

b.Total output before thermal protection shutdown or safety limitation.

Usable Powerb

110-264VAC

Usable Powerb

90-110VAC

E8401A E8403A

Peak Current,

Voltage

+5V 50A 5A 90A 9A

+12V 6A 1A 15A 2.5A

-12V 4A 1A 15A 2.5A

+24V 4A 2A 15A 5A

I

MP

,

a

b

Dynamic Current,

a

c

,

I

MD

Peak Current,

I

MP

a,b

Dynamic Current,

a,c

I

MD

-24V 4A 2A 15A 5A

-5.2V 20A 2A 60A 8A

-2V 10A 1A 30A 5A
a.

Specifications apply at the backplane, 0-55 °C.

b.

IMP = Rated mainframe pea k DC output current as defined by t he VXIbus Specification.

c.

IMD = Rated mainframe peak-to-peak dynamic current as defined in the VXIbus Specification by

a current vs. frequency c urve .

54 HP E8401A, E8403A Product Specifications Appendix A

Output Voltage

Specifications

Voltage

+5V +0.25V / –0.125V 50mV 50mV

+12V +0.60V / –0.36V 50mV 50mV

-12V –0.60V / +0.36V 50mV 50mV

+24V +1.20V / –0.72V 150mV 150mV

-24V –1.20V / +0.72V 150mV 150mV

-5.2V –0.26V / +0.156V 50mV 50mV

-2V –0.10V / +0.10V 50mV 50mV

a.

Specificatio ns apply at the backplan e, 0-55°C.

+5VSTDBY:Up to 1A may be available if provided by the user throug h pins
8 and

21 of the diagnostic connector.

Input Power Requirements

Input Voltage: 90VAC Min to 264VAC Max, Single continuous range
Input Frequency: 47Hz Min to 66Hz Max (across full input voltage range)

DCV Input: (Not Recommended. Input connector is not certified for
Inrush Current:

E8401A: Input Voltage 110VAC:25A Typical
E8403A: Input Voltage 110VAC:40A Typical

Allowed

Variation

a

Ripple/Noise

DC Load

a

Induced

Ripple/Noise

a

360Hz to 440Hz: (Not Recommended. Leakage currents
may exceed safety limits, 132VAC Max)

DCV input.)

Input Voltage 264VAC:55A Typical

Input Voltage 264VAC:60A Typical

Note: If inrush current causes mains supply voltage to temporarily drop
below the requir ed minimum voltage ( 90VAC), the mainfra me may not turn
on properly.

Total Input Power may be estimated by the following expression:

1.4 * (Output Power + 70W)

Notes:Total Power Input in Watts or VA, Power Factor Corrected.

Output Power in Watts = Sum of Voltag e times Cur rent fo r the seve n

VXI output voltages.
Expression is valid for full output load and 90VAC.
Efficiency increases slightly with higher input voltage.
Efficiency decreases slightly with lower output load.

Power Switch: On/Standby switch on front.

Indicators: ON indicator green when mainframe powered on

Standby indicator amber in Standby and ac power line connected.

May be switched On/Standby remotely via Diagnostic Connector.

HP E8401A, E8403A Product Specifications 55Appendix A

Mains Power Installation

+5VSTDBY: P ower may be provided by th e user to the +5VSTDBY bus on

Category II

Chassis Ground Connection:M4 x 0.7 threaded nut insert on rear panel.

Cooling Specifications

High performance impeller provides cooling air to modules. Unique air
distribution system (patent applied) and positively-pressurized plenum
provide quiet operat ion and uni form air flow from slot to slot and from fr ont
to rear of modules. Outstanding back pressure performance insures airflow
through dense modules. Separate power supply cooling fan(s) provides an
independent air path for reliable cooling of power supply.

Cooling

Specification

the VXI backplane.
Current: 1A Max
Voltage Range: 5.25V Max, 4.875V Min
Connector: Pins 8 and 21 of the Diagnostic Connector.

5.0

Charts

4.0

Pressure Drop
Across Module

(mm H

0)

3.0

2

2.0

1.0

0.0

Worst Slot

2.0 4.0 6.0 8.0 10.0

Airflow Through Module (liters/sec)

Best Slot

12.0

•VXI-8 Specification Draft 2.0. Fixture revision 1.7.

•VXI-8 Standard Modules installed in all other slots.

•Performance shown for Worst Slot (slot 1) and Best Slot (slot 10).

•Front-to-Rear Variance 13% worst case. Typically 10%-12% in most

slots.

•Fans on Full Speed. Minimum airflow is approximately 50% with

fans on Variable Speed.

•Air Filter Kit not installed. Airflow is reduced approximately 10%

with clean air filters inst alled.

•Measurements taken at 1,500m altitude.

56 HP E8401A, E8403A Product Specifications Appendix A

Pressure Drop

Across Module

(mm H

0)

2

24.0

18.0

12.0

Cooling Mode (High or

Variable)

6.0

0.0

5.0 10.0 15.0 20.0 25.0

Worst Slot

Airflow Through Module (liters/sec)

•All other slots blocked. Airflow decreases as additional slots are

opened.

•Performance shown for Worst Slot (slot 2). Airflow is greater in all

other slots.

•Fans on Full Speed. Minimum airflow is approximately 50% with

fans on Variable Speed.

•Air Filter Kit not installed. Airflow is reduced approximately 10%

with clean air filters inst alled.

•Measurements taken at 1,500m altitude.

Switchable on the front pa nel. Control s both impeller and fan.

High Fan Speed Mode: Full Airflow all the time.

Variable Fan Speed Mode:

Fan Speed increments throug h 5 discrete spe eds as a function of power

supply temperature and reference temperature. Reference
temperature (pins 11,12 of Diagnostic Connector) is measured on
the backplane and is a function of load and ambient temperature.

At full load: Low Speed up to approximately 30°C ambient.

High Speed above approximately 40°C ambient.

At no load: Low Speed up to approximately 40°C ambient.

High Speed above approximately 50°C ambient.

Assuming default limits:
At full load: Low Speed up to approximately 30°C

High Speed above approximately 40°C

At no load: Low Speed up to approximately 40°C

High Speed above approximately 50°C

HP E8401A, E8403A Product Specifications 57Appendix A

Airflow Path Inlet through rear and exhaust through upper sides for both power supply

and modules. Allow 50mm clearance for proper airflow.
Air Filter Kit available for demanding environmental applications.

Acoustical Noise Specifications

Low Fan Speed:41.4 dBA sound pressure at bys tander position, 1m in front
of mainframe.

High Fan Speed:54.9 dBA sound pressure at bystander position, 1m in
front of mainframe.

Backplane Spe ci f ic ati o n s

•Solid state automatic daisy-chain jumpering for BUS GRANT and

IACK signals.

•Full differential distribution of CLK10.

•ACFAIL* and SYSRESET* in full compliance with the VMEbus and

VXIbus Specifications.

•Surface mount construction and no sockets for maximum reliability.

Basic Monitor Specifications

Indicators •Power – Stdby: Glows amber in Standby and line connected.

•Power – On: Glows green when On.

•Monitor – Supply Voltages: Glows green when power supply output

voltages within specification (± 8 %). Otherwise flashes amber.

•Monitor – Supply Temp: Glows green when power supply

temperature is below a set limit. Otherwise flashes amber.

•Monitor(Status) – Fans: Glows green when module and power

supply fans are operating within set limits. Otherwise flashes amber.

•Monitor(Status) – Backplane Activity: Flashes green when

backplane activity occurs. Triggered by backplane signals DS0 and
DS1.

•Monitor(Status) – Backplane SYSFAIL: Glows amber when

backplane signal SYSFAIL* is asserted.

Switches • On/Standby

•Fan Mode: Switch all fans between full speed and variable speed

modes.

•Reset: Asserts backplane signal SYSRESET*.

58 HP E8401A, E8403A Product Specifications Appendix A

Diagnostic Connector •Output all 7 backplane voltages for monitoring

•Output +5V and +12V for remote applications. 1A max each.

•Input +5VSTDBY to backplane. 1A max total for pins 5 and 18 wired

in parallel.

•Remotely operate On/Standby

•Power supply temperature output. 0mV = 0

•Reference temperature output. 0mV = 0

•Fans OK output, same as Fans indicator. TTL low true logic levels.

•Backplane voltages OK output. TTL low true logic levels.

•SYSRESET*, input or output. TTL low true logic levels.

•ACFAIL*, output. TTL low true logic levels.

•Ground

Environmental Specifications

°

C, 10mV per °C.

°

C, 10mV per °C.

Temperature Operating Temperature Range:0

Storage Temperature Range:-40°C to +75°C
Humidity

Operating Humidity Range:Up to 95% RH from 0°C to +40°C.

Up to 65% RH from +40°C to +55°C.

Storage Humidity Range: Up to 95% RH from 0°C to +55°C.

Up to 65% RH from +55°C to +75°.

Shock

End Use Handling:Half sine waveform, <3 msec Duration,

∆

v = 160 cm/sec minimum

Transportation:Trapezoidal waveform, ∆v = 605 cm/sec,

30 g minimum

Vibration

Operating and Functional:5 to 500 Hz, 0.0001 g
Survival, Swept Sine:5 to 500 Hz Resonance Search, 5 minute Dwell on

Resonances at 0.5 g

Survival, Random:0.015 g
Altitude:Up to 3000m
Pollution Degree 2

2

/Hz Spectral Density

°

C to +55°C

2

/Hz Spectral Density

Safety Specifications Conforms to EN61010-1 including Amendment 2 (IEC 1010-1 including

Amendment 2)
Certified to CSA 1010.1
NRTL Listing to UL 3111-1
Conforms to EN60950 (IEC 950)
Certified to CSA 950.
NRTL Listing to UL 1950 Compliance.

HP E8401A, E8403A Product Specifications 59Appendix A

Electromagnetic

Compliance

Specifications

Conducted Emissions

Conforms to EN55011, CISPR11, Group 1 Class A

Conforms to EN61000-3-2, IEC 1000-3-2, Class A, Harmonic Current

Conforms to EN61000-3-3, IEC 1000-3 -3, Cl as s A, Vol ta ge Fl uct ua ti on

and Flicker
Conducted Immunity

Conforms to EN50082-1, IEC 1000-4-4, Fast Transients Immunity

Conforms to EN61000-4-5, IEC 1000-4-5, Surge Immunity

Conforms to ENV50141, IEC 1000-4-6, Conducted Immunity

Conforms to EN61000-4-11, IEC 1000-4-11 Voltage Dips &

Interruptions

Radiated Emissions

Conforms to EN55011, CISPR11, Group 1 Class A
Radiated Field Immunity

Conforms to EN50082-1, IEC 1000-4-3, Radiated Field Immunity
ESD Immunity

Conforms to EN50082-1, IEC 1000-4-2, 4kV CD, 8kV AD
Magnetic Field Immunity

Conforms to EN61000-4-8, IEC 1000-4-8, Level 2, Magnetic Field

Immunity
EMC Accessories: The standard mainframe is suitable for the majority of

applications. For more demanding EMC applications, the following
accessories are available:

-- Chassis Shield Kit (E8400-80919) per VXI Specification Rev. 1.4,
B.7.3.4. The chassis shield is used to provide additional isolation or
shielding between noisy or sensitive modules. This may be useful,
for example, with custom modules that do not meet the VXI
near-field radiation spec. The HP chassis shields are easy to install
and are grounded in all four corners (patent applied).

-- Backplane Connector Shi elds (E8400- 80918) per VXI Specification
Rev. 1.4, B.7.3.1. Backplane connector shields are useful for
improving the ground connection between a module and the
backplane. For a few modules, they are necessary for emc
compliance to EN55011 and CISPR11. For the vast majority of
modules, they are not necessary. Note that these shields are only
useful if the module includes contacts conforming to VXI spec
B.7.2.3.

-- EMC Filler Panels (E8400-60202) per VXI Specification Rev. 1.4,
B.7.2.3. EMC Filler Panels are used to provide a continuous
connection across the front opening of the mainframe. All HP
modules include emc contacts to the adjacent slot. Using EMC
Filler Panels in the empty slots completes the connection and
reduces radiated emissions and increases radiated and esd
immunity.

60 HP E8401A, E8403A Product Specifications Appendix A

Power Supply Protection All outputs protected from over-temperature, over-voltage, over-current,

short-to-ground and short-to-other-output. Protection mode is full
shutdown. Recovery o ccurs when t he fa ult condit io n is removed and p ower
of on/standby is cycled.

Repair Diagnosis and Troubleshooting through the front panel monitor and

connector.

•MTTR, Power Supply: <10 minutes (with mainframe and modules

fully installed in rack)

•MTTR, Impeller and/or Fan: <10 minutes (with mainframe and

modules fully installed in rack)

•Air Filter Replacement (if kit installed): <2 minutes.

HP E8401A, E8403A Product Specifications 61Appendix A

62 HP E8401A, E8403A Product Specifications Appendix A

Index

Symbols

+5V STDBY, 17

A

AC power requirements, 10
Accessori es, mainfra me, 21
ACFAIL*, 17
Acoustical Noise Specifications, 58
acrylic door install at ion , 36
Airflow Path, 58
assembly failu re s , 43
assembly replacemen t

basic monitor board, 47
power supply, 48, 49
replacing the impeller, 50

B

backplane connector shields, 40
Backplane Specifications, 58
Basic Monitor Specifications, 58

C

cable tray installation, 34
chassis shield installation, 38
connecting the HP E8400A to earth ground, 11
connector shields

backplane, 40

cooling, 10
Cooling Specifications, 56

G

General Specifications, 53
grounded shielding, 38
grounding the mainframe, 11

I

Input Power Requirements, 55
installing the backplane connector shields, 40
installing the cable tray, 34
installing the intermodule chassis shields, 38
installing the tinted acrylic door, 36
installing VXI instruments, 12

A- and B-size, 14
C-size, 13

L

locating mainfr ame problems, 43

M

mainframe coo ling, 10
Mainframe Options and Accessories, 21
Mechanical Specifications, 53

O

On/Stdby switch, disabling, 19
Options, mainframe, 21
Output Power Specificatio ns, 54
Output Voltage Specifications, 55

D

Diagnostic Connector, 16, 59
disabling the On/Stdby switch, 19
Display LEDs, 15
Dynamic and Peak Current, 54

E

earth ground connection, 11
Environment al Specifications, 59

F

Front Panel, 15
Fuse, 43

P

Peak and Dynamic Current, 54
positioning the mainframe for adequate cooling, 10
Power Cords, 51
Power line fuse, 43
power requirements, 10
power supply cooling, 10
Power Supply Protection, 61
Power supply replacement, 48, 49
problem isolation, 43

Index 63

R

rack mounting

acrylic door installation, 36
cable tray installation, 34
slide rails, 29
support rails, 25

rack mounting the HP E8400A mainframe, 23
remote power-on pins, 18
Replacement Power Cords, 51
replacing the basic monitor board, 47
replacing the impeller, 50
replacing the power supply, 48, 49

S

slide rails, 29
Specifications, 53

Acoustical Noise, 58
Airflow Path, 58
Backplane, 58
Basic Monitor, 58
Cooling, 56
dynamic and Peak Current, 54
Environmental, 59
General, 53
Input Power, 55
Mechanical, 53
Output Power, 54
Output Voltage, 55

support rails, 25
SYSRESET*, 17

U

using the remote power-on pins, 18

64 Index