HP 8508A Instruction and safety manual

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HP 8508A Vector Voltmeter
(Including Option 001)
Operating
&
Service
Manual
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HP
8508A
VECTOR
VOLTMETER
(Including
Option
001)
Operating
and
Service
Manual
SERIAL NUMBERS
_
This
manual
provides
complete
information
for
in-
struments
with
serial-number
prefix
2949U.
With
the
changes
described
in
Section
7,
this
man-
ual
also
applies
to
instruments
with
serial
numbers
prefixed
2812U.
For
additional
important
information
about
serial
numbers,
refer
to
“INSTRUMENTS
COVERED
BY
THIS
MANUAL”
in
Section
1.
NOTE
Use
this
manual
only
with
instruments
that
have
a
—
“Uy”
in
their
serial-number
prefix.
First Edition
Copyright
@HEWLETT-PACKARD
LIMITED
SOUTH
QUEENSFERRY,
WEST
LOTHIAN,
SCOTLAND
EH30
9TG
Operating
and
Service
Manual
HP
Part
08508-90000
Printed
In
U.K.
:
May
1988
Microfiche
Operating
and
Service
Manual
HP
Part
08508-90011
Cin
HEWLETT
PACKARD

CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment
Srom the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United
States National Bureau of Standards, to the extent allowed by the Bureau'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 HP. Buyer :
shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to the Buyer.
However, Buyer shall pay all shipping charges, duties, and taxes for products returned to HP from another
country.
HP warrants that its software and firmware designated by HP for use with an instrument will execute
its programming instructions when properly installed on that instrument. HP does not warrant that the
operation of the instrument, or software, or firmware 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 modification or misuse, operation outside of
the environmental specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY JIS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IM-
PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES.
HP 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 Office. Addresses are provided in
this manual.
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- SAFETY CONSIDERATIONS
GENERAL
This product and related documentation must be
reviewed for familiarization with safety markings and
instructions before operation.
This product is a Safety Class | instrument oo
with a protective earth terminal).
BEFORE APPLYING POWER
Verify that the product is set to match the available
line voltage and the correct fuse is installed.
SAFETY EARTH GROUND
An uninterruptible safety earth ground must be pro-
vided from the main power source to the product in-
put wiring terminals, power cord, or supplied power
cord set.
SAFETY SYMBOLS
Instruction manual symbol: the product will be
marked with this symbol when it is necessary for the
user to refer to the instruction manual (refer to Table
of Contents.)
; Indicates hazardous voltages.
+ Indicates earth (ground) terminal.
The WARNING sign denotes a hazard.
It calls attention to a procedure, practice, or the like, .
which, if not correctly performed or adhered to, could
result in personal injury. Do not proceed beyond a
WARNING sign until the indicated conditions are
fully understood and met.
CAUTION}
the
CAUTION
sign
denotes
a
hazard.
It
calls attention to an operating procedure, practice, or
the like, which, if not correctly performed or adhered _
to, could result in damage to or destruction of part:
or all of the product. Do not proceed beyond a
CAUTION sign until the indicated conditions are fully
understood and met.
WARNING
Any interruption of the protective (grounding)
conductor
(inside
or
outside
the
instrument)
or
disconnecting
the
protective
earth
terminal
will
cause
a
potential
shock
hazard
that
could
re-
sulting personal injury. (Grounding one conduc-
tor of a two conductor outlet is not sufficient
protection).
Whenever it is likely that the protection has
been impaired, the instrument must be made
inoperative and -be secured against any unin-
tended operation.
If this instrument is to be energized via an
' autotransformer (for voltage reduction) make
sure the common terminal is connected to the
earth terminal of the power source.
Servicing instructions are for use by service
trained personnel only. To avoid dangerous elec-
tric shock, do not perform any servicing unless
qualified to do so.
Adjustments
described
in
the
manual
are
per-
formed
with
power
supplied
to
the
instrument
while
protective
covers
are
removed.
Energy
available
at
may
points
may,
if contacted,
result
in
personal
injury.
Capacitors inside the instrument may still be
charg-d even if the instrument has been discon-
nected from its source os supply.
For continued protection against fire hazard, re-
place
the
line
fuse(s)
only
with
250V
fuse(s)
of
the same current rating and type (for exam-
ple,
normal
blow,
time
delay,
etc.)
Do
not
use
repaired fuses or short circuited fuseholders.

ATTENTION
Static Sensitive
Devices
This instrument was constructed in an ESD (electro-static discharge)
protected environment. This is because most of the semi-conductor
devices used in this instrument are susceptible to damage by static
discharge.
Depending on the magnitude of the charge, device substrates can be
punctured or destroyed by contact or mere proximity of a static charge.
The results can cause degradation of device performance, early pete;
or immediate destruction.
These charges are generated in numerous ways such es simple contact,
separation of materials, and normal motions of persons working with
static sensitive devices.
When handling or servicing equipment containing static sensitive
devices, adequate precautions must be taken to prevent device damage
or destruction.
Only those who are thoroughly familiar with industry accepted
techniques for handling static sensitive devices should attempt to
service circuitry with these devices.
In all instances, measures must be taken to prevent static charge
build-up on work surfaces and persons handling the devices.
SN
.
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HEWLETT
PACKARD
HERSTELLERBESCHEINIGUNG
_.
Hiermit
wird
bescheinigt,
daB
das
Gerat‘System
8508A
in
Ubereinstimmung
mit
den
Bestimmungen
von
Postverfiigung
1046/84
funkenstért
ist.
Der
Deutschen
Bundespost
wurde
das
Inverkehrbringen
dieses
Gerates/Systems
angezeigt
und
die
Berechtigung
zur
Uberpriifung
der
Serie
auf
Einhaltung
der
Bestimmungen
eingeraumt.
Zusatzinformation fir MeB- und Testgerate
Werden
Me
und
Testgerate
mit
ungeschirmten
Kabeln
und/oder
in
offenen
MeSaufbauten
verwendet,
so
ist
vom
Betreiber
sicherzustellen,
daB
die
Funk-Entstérbestimmungen
unter
Betriebsbedingungen
an
seiner
Grundstiicksgrenze
eingehalten
werden.
MANUFACTURER’S
DECLARATION
—
This
is
to
certify
that
this
product
8508A
meets
the
radio
frequency
interference
requirements
of
directive
1046/84.
The
German
Bundespost
has
been
notified
that
this
equipment
was
put
into
circulation
and
was
granted
the
right
to
check
the
product
type
for
compliance
with
these
requirements.
Note:
If
test
and
measurement
equipment
is
operated
with
unshielded
cables
and/or
used
for
measurement
on
open
set-ups,
the
user
must
ensure
that
under
these
operating
conditions,
the
radio
frequency
interference
limits
are
met
at
the
border
of
his
premises.

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Contents
Contents
SECTION
1
-
GENERAL
INFORMATION
Introduction
1-1
Specifications
1-1
Safety
Considerations
1-1
Instruments
Covered
by
Manual
1-1
Description
1-2
Options
1-3
Mechanical
Options
1-3.
Instrument
Options
1-4
Documentation
Options
1-4
Support
Option
1-4
Accessories
Supplied
1-4
Equipment
Available
for
use
with
the
HP
8508A.
1-4
Recommended
Test
Equipment
1-5
SECTION
2
-
INSTALLATION
Introduction
2-1
Initial
Inspection
2-1
Preparation
for
Use
2-2
Power
Requirements
2-2
Line
Voltage
Selection
and
Fuse
2-2
Power
Cable
2-3
Operating
Environment
2-3
Mating
Connectors
2-4
Rack
Mounting
2-4
Hewlett-Packard
Interface
Bus
2-5
HP-IB
Connector
2-5
HP-IB
Cables
2-6
HP-IB
Address
Selection
2-6
Storage
and
Shipment
2-8
Environment
(2-8
Packaging
2-8
SECTION
3
-
OPERATION
Getting
Started
3-1
Introduction
3-1
Operator’s
Maintenance
3-1
New
User
Introduction
3-2
Front
Panel
Features
"
3-4
-Measurement
Keys
3-4
Function
Keys
3-5
Instrument
State
3-6
Display
Area
Keys
3-6
Rear
Panel
Features
3-8
E1089

Contents
Making Measurements
Basic Measurements
Introduction
Getting Acquainted with the Vector Voltmeter
Measurements with probes
What you have achieved
Advanced Measurements
Measurements in a 50 ohm system
Typical Configurations
Probing measurements with external source
Transmission measurements in 50 ohms - Probe Inputs
Transmission measurements in 50 ohms - Direct Inputs
Reflection measurements in 50 ohms - Probe Inputs
Reflection measurements in 50 ohms - Direct Inputs
Pee Operation - The Hewlett-Packard Interface Bus
HP-1B Capability
Local and Remote Operation
Addressing
Power-on Default Conditions
Data Messages
Instrument Commands
Service Requests
Status Reporting
HP-IB Response Formats
HP-IB Command Set Summary.
Command Reference
SECTION 4 - PERFORMANCE TESTS
Introduction
SECTION 5 - ADJUSTMENTS
Introduction
Warm-up Time
Safety Considerations
Equipment Required
Post Repair Adjustments
Related Adjustments
Adjustable Components
Power Supply Adustments: + 12.0V, -12. ov and +5.0V
IF Assembly Adjustments
Set up the centre frequency of the Channel A and B Bandpass filters
To equalize the A and B Channel phase shift
Set up the amplitude path gain using an external 20kHz, 100mV reference source
Search and Lock Assembly Adjustments
Set the centre frequency of the 1.62MHz and 32.4MHz Oscillators
~
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4-1
E1089 _

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SECTION
6
-
REPLACEABLE
PARTS
~ Introduction
Abbreviations
Replaceable
Parts
List
-
Ordering Information
-Direct Mail Order System
SECTION
7
-
MANUAL
CHANGES
a
Introduction
SECTION
8
-
SERVICE
Introduction
Safety
Considerations
After
Service
Product
Safety
Checks
Anti-Static
Precautions
Recommended
Test
Equipment
Troubleshooting
General
Description
Disassembly
and
Reassembly
Procedure
for
the
Standard
Instrument
Disassembly
and
Reassembly
Procedure
for
Option
001
Instruments
Front
Panel
Assembly
Al
Error
Codes
200
Series
Power
Supply
Assembly
A2
Error
Codes
300
Series
IF
Assembly
A3
Error
Codes
400
Series
©
Search
and
Lock
Assembly
A4
- Error Codes 500 Series
Processor Assembly A5
Error Codes 600 Series
E1089
Contents
8-3
8-11
8-15
8-17
8-19

General Information
1-0
Figure 1-1. The HP 8508A Vector Voltmeter
a
ra
ee @Munue

”
General Information
General
Information
.
.
Section
1
:
1-1
INTRODUCTION
This
service
manual
contains
information
required
to
install,
test,
adjust
and
service
the
Hewlett-Packard
Model
508A
Vector
Voltmeter.
The
HP
8508A
is
shown
in
Figure
1-1.
On
the
title
page
of
this
manual
is
a
Microfiche
Part
Number.
This
number
can
be
used
to
order
4
x
6
inch
micro-
film
transparencies
of
the
manual.
Each
microfiche
contains
up
to
96
photo
duplicates
of
the
manual
pages.
1-2
SPECIFICATIONS
Instrument
specifications
are
listed
in
Table
1-2
of
the
Probe
Module
Insert.
These
specifications
are
the
perform-
ance
standards
or
limits
against
which
the
instrument
is
tested.
The
Probe
Module
Insert
document
contains
the
specifications
relevant
when
the
Probe
Module
is
inserted
into
the
HP
8508A
Vector
Voltmeter
mainframe.
1-3
SAFETY
CONSIDERATIONS
This
instrument
is
a
Safety
Class
1
instrument
(provided
with
a
protective
earth
terminal).
The
instrument
and
manual
should
be
reviewed
for
safety
markings
and
instructions
before
operation.
The
WARNINGS
indicate
the
possibility
of
personal
danger
and
CAUTIONS
indicate
the
possibility
of
instrument
damage.
1-4
INSTRUMENTS
COVERED
BY
MANUAL
Attached
to
the
instrument
is
a
serial
number
plate.
The
serial
number
is
in
the
form
XXXXUXXXXX.
The
first
four
digits
and
the
letter
comprise
the
serial
prefix
which
is
the
same
for
all
identical
instruments.
The
serial
prefix
only
changes
when
a
change
is
made
to
the
instrument.
The
last
five
digits
comprise
the
serial
number
which
is
-
unique
for
each
instrument.
The
content
of
this
manual
applies
to
instruments
with
the
serial
prefix(es)
listed
under
SERIAL
NUMBERS
on
the
title
page
of
this
manual.
An
instrument
manufactured
after
the
printing
of
this
manual
may
have
a
serial
number
prefix
that
is
not
listed
on
the
title
page.
The
unlisted
serial
number
prefix
indicates
that
the
instrument
is
different
from
those
described
in
this
manual.
The
manual
for
this
new
instrument
is
accompanied
by
a
Manual
Changes
supplement.
This
supple-
ment
contains
“change
information”
that
explains
how
to
adapt
the
manual
to
the
new
instrument.
In
addition
to
change
information,
the
supplement
may
also
contain
information
for
correcting
errors
in
the
manual.
To
keep
this
manual
as
current
and
as
accurate
as
possible,
Hewlett-Packard
recommends
that
you
periodically
request
the
latest
Manual
Changes
supplement.
The
supplement
for
this
manual
is
identified
by
the
manual
print
date
and
part
number
(both
of
which
appear
on
the
manual
title
page).
Complimentary
copies
of
the
supplement
are
available
from
Hewlett-Packard.
For
information
concerning
a
serial
number
prefix
that
is
not
listed
on
the
page
or
in
the
Manual
Changes
supplement,
contact
your
nearest
Hewlett-Packard
office.
;

General Information
1-5 DESCRIPTION
The HP 8508A Vector Voltmeter is a dual-channel, autoranging receiver which measures the voltages of two CW
’ signals and the phase difference between them. The following diagram shows the vector relationship between two
signals at the same frequency and the way that one is used as a phase reference in the HP 8508A.
Use Aas
Phase Ref
Figure 1-1. Vector Signals -
The measurements are either of a single channel or the ratio between the two channels, and results displayed as
voltage or power (in linear or log units), normalized magnitude and phase angle, or real and imaginary components.
In addition the HP 8508A has built-in procedures for simple network analysis. The HP 8508A has two configura-
tions - the first providing two high impedance probe inputs with a frequency range from 100kHz to 1GHz, and the
second providing two 50 ohm type-N connector inputs with a frequency range of 300kHz to 2GHz. The configura-
tion can be changed by replacing the instrument’s input module.
The HP 8508A can be used in applications where vector signal information is required at low cost - particularly in
the design, manufacture or service of RF assemblies. Thé HP 8508A is a simple, high-sensitivity, receiver and can be’
used with any source, including one that is part of the device to be tested. Its built-in HP-IB interface for program:
ming allows it to be used as an economical tool in automated production environments.
Typical measurements include voltage, power, gain or loss, impedance and phase matching. Measurements can be
made either from the input to the output of the device, or by probing within the device. Other measurements
include transmission and reflection - procedures that include test system calibration against known standards.
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é General Information
A
typical
setup
includes
a
source
(which
may
be
part
of
the
device
to
be
tested),
a
reference
path
and
a
measure-
ment
path.
Cables,
adapters
and
other
accessories
required
depend
on
the
application.
The
following
diagram
shows
an example setup.
HP8S08A
“B" Input
"A’ Input
Module Under Test
Reference Path
Device
Under
Test
Mesaiement
eat
Figure
1-2.
Typical
Probing
Set-up
In
order
for
the
source
to
be
suitable
for
use
with
the
HP
8508A,
it
has
to
meet
certain
specifications.
It
must
produce
a
stable
CW
signal
at
the
frequency
of
interest,
with
no
modulation.
,
1-6 OPTIONS .
The
standard
instrument
is
supplied
with
front
handles
(HP
Part
Number
5062-3989)
while
rack
mounting
flanges
or
bail
carrying
handle
and
front
cover
are
available
as
options.
-
Mechanical
Options
—
aS
1.
|
Bail
Handle
Option
001.
Adds
bail
carrying
handle,
rugged
feet
and
front
panel
storage
cover.
Rack
Flange
Kit
Option
908.
(HP
Part
Number
5062-3977).
This
kit
contains
all
necessary
hardware
and
installation
instructions
for
mounting
the
Vector
Voltmeter
(not
fitted
with
front
panel
handles)
in
a
rack
with
482.5
millimeter
(standard 19 inch) spacing.
Rack
Flange
Kit
Option
913.
(HP
Part
Number
5061-4071).
This
kit
contains
all
necessary
hardware
and
installation
instructions
for
mounting
a
Vector
Voltmeter,
with
front
panel
handles,
in
a
rack
with
482.5
millimeter
(standard
19
inch)
spacing.
, :
2
E1089
13

General Information
Instrument Options
Option 050. Provides an HP Model 85082 50 ohm Input Module instead of the HP Model 85081 High Impedance
Input
Module.
;
Option 100. Deletes Input Module.
Documentation Options
rc
Extra Manual Set Option 910. Provides an additional copy of the Operating and Service Manual and the User’s
Guide (English version).
Japanese User’s Guide Option 030. Substitutes the Japanese version of the User’s Guide for the English version.
French User’s Guide Option 031. Substitutes the French version of the User’s Guide for the English version.
German User’s Guide Option 032. Substitutes the German version of the User’s Guide for the English version.
Italian User's Guide Option 033. Substitutes the Italian version of the User's Guide for the English version.
Spanish User’s Guide Option 034. Substitutes the Spanish version of the User’s Guide for the English version.
Support Option
Extended Hardware Support Option W390. Provides an additional 2 years of return-to-HP hardware service support.
1-7 ACCESSORIES SUPPLIED
The accessories supplied with the instrument are:
* Front Handle Kit with standard instrument.
* An appropriate power cable (see Section 2).
* An Operating and Service Manual
* A User’s Guide
* Accessory kit
comprising: Accessory Kit Box 1 1540-0149
Square Plastic Box 1 1540-0034
Probe Tip 6 5020-0457
Probe Tip Nut Driver 1 8710-0084
Pre-cut Foam Insert 1 9220-3728
Probe Tip/BNC Adaptors 2 HP 10218A
1-8 EQUIPMENT AVAILABLE FOR USE WITH THE HP 8508A
A printer and controller can be used with this instrument.
1-4
E1089
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1-9
RECOMMENDED
TEST
EQUIPMENT
Table
1-1
lists
the
test
equipment
required
for
testing,
adj
Synthesized Signal
Generator
Power Divider
DVM
AC Calibrator
50 ohm Termination
Duat Channel Synthesizer
Attenuator
Attenuator Driver
RF Power Meter
Power Sensor
Oscilloscope
Accessory Kit
Input Module Extender
-
;
General
Information
usting
and
servicing
the
Vector
Voltmeter.
The
Critical
Specifications
column
describes
the
essential
requirements
for
each
piece
of
test
equipment.
Other
equipment
can
be
substituted
if
it
meets
or
exceeds
the
critical
specifications.
Table
1-1.
Recommended
Test
Equipment
_
Critical
Specification
Frequency
Range
100kHz
to
2000MHz
Output
Level
-60dBm
to
+20¢Bm
de
to
18GHz,
S0ohm,
Insertion
Loss
64B,
Tracking
<0.4dB
Sensitivity mV
Range to 1.0V
Frequency
Output
of
20kHz
Output
Level
100mV
+20uV
50
ohm,
Type-N
(m),
SWR
<1.01
Frequency
Range
0
to
13MHz
Output
Level
-10dBm
to
+19dBm
Phase Offset +175 deg
Independent
adjustment
on
both
channels
for
both
magnitude
and
phase.
0- 110dB in 10dB steps
Calibration
Certificate
required.
Required for HP 8496G
100kHz
to
4.2GHz
(with
Power
Sensor)
imW
Reference
Output
.
NBS
Traceable
50
ohm,
100kHz
to
4.2GHz
SWR
1.2,
1uW
to
100mW
Bandwidth SOMHz
Sensitivity ImV/div
Sweep Speed 0.2us/div
HP 8642B
HP 11636A
HP 3456A
Datron 4200A
HP 909A Opt 012
HP 3326A
HP 8496A/G Opt 890
HP 117134
HP 436A or HP 438A.
HP 8482A
HP 11570A
HP 08508-60032
*
P
=
Performance,
A
=
Adjustment,
T
=
Troubleshooting,
O
=
Operation
NOTE:
The
HP
8496A/G
attenuator
should
be
calibrated
within
0.034B
for
the
10dB
through
60dB
steps.
E1089
1-5

SR
SGU
eenenaetanaagrasenasseeanaaegpes
General Information
1-6

TS es
Installation
Installation
-
Section
2
2-1
INTRODUCTION
This
section
provides
installation
instructions
for
the
Hewlett-Packard
Model
8508A
Vector
Voltmeter
and
its
accessories.
This
section
also
includes
information
about
initial
inspection
and
damage
claims,
preparation
for
use,
packaging,
storage
and
shipment.
2-2
INITIAL
INSPECTION
WARNING
IF
THERE
IS
ANY
SIGN
OF
SHIPPINGDAMAGE
TO
THE
_
INSTRUMENT,
DO
NOT
APPLY
POWER.
RETURN
THE
INSTRUMENT
TO
THE
NEAREST
HEWLETT-PACKARD
OFFICE
FOR
CHECKING.
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
instrument
has
been
checked
mechanically
and
electrically.
The
Performance
Tests
check
the
complete
specification
of
the
instrument.
If
the
contents
of
the
shipment
are
incomplete,
if
there
is
mechanical
damage
or
defect,
or
if
the
instrument
per-
formance
fails
to
meet
specification,
notify
the
nearest
Hewlett-Packard
office.
If
the
shipping
container
is
damaged
or
the
cushioning
material
shows
signs
of
stress,
notify
the
carrier
as
well
as
the
Hewlett-Packard
office.
Keep
the
shipping
material
for
the
cartier’s
inspection.
The
Hewlett-Packard
office
will
arrange
for
repair
or
replacement
at
Hewlett-Packard’s
option
without
waiting
for
a
claims
settlement,
providing
that
Hewlett-Packard
and/or
the
carrier
are
notified
within
12
days
of
shipment.
E1089
2-1

Installation ©
2-3 PREPARATION FOR USE
- WARNING
TO
AVOID
THE
POSSIBILITY
OF
INJURY
OR
DEATH,
THE
FOLLOWING
PRECAUTIONS
MUST
BE
FOLLOWED
BEFORE
THE
INSTRUMENT
IS
SWITCHED
ON.
(A)
NOTE
THAT
THE
PROTECTION
PROVIDED
BY
GROUNDING
THE
INSTRUMENT
CABINET
MAY
BE
°
LOST
IF
ANY
POWER
CABLE
OTHER
THAN
THE
THREE-PRONGED
TYPE
SUPPLIED
IS
USED
TO
COUPLE
THE
AC
LINE
VOLTAGE
TO
THE
INSTRUMENT.
Nek
’
(B)
IF
THIS
INSTRUMENT
IS
TO
BE
ENERGIZED
VIA
AN
AUTO-TRANSFORMER
TO
REDUCE
OR
.
INCREASE
THE
LINE
VOLTAGE,
MAKE
SURE
THAT
THE
COMMON
TERMINAL
IS
CONNECTED
TO
THE
NEUTRAL
POLE
OF
THE
POWER
SOURCE.
|
(C)
THE
POWER
CABLE
PLUG
SHALL
ONLY
BE
INSERTED
INTO
A
SOCKET
OUTLET
PROVIDED
WITH
A
PROTECTIVE
EARTH
CONTACT.
THE
PROTECTIVE
ACTION
MUST
NOT
BE
NEGATED
BY
THE
USE
OF
AN
EXTENSION
CORD
WITHOUT
A
PROTECTIVE
CONDUCTOR
(GROUNDING).
2-4
POWER
REQUIREMENTS
The
instrument
requires
a
power
source
of
100/120/220/240V
AC,
+
10%,
48
to
440Hz,
single
phase.
The
maximum
power
consumption
is
typically
40VA.
2-5
LINE
VOLTAGE
SELECTION
AND
FUSE
The
line
voltage
is
selected
by
the
rear
panel
switch.
CAUTION
Before
connecting
the
instrument
to
a
power
outlet
ensure
that
_the
line
voltage
selector
is
correctly
set,
and
that
a
fuse
of
the
correct
rating
is
fitted.
Fuse
ratings
are
given
in
the
table
below:
Table
2-1.
Fuse
Ratings
Nominal
Fuse
HP
Part
Line
Rating
Number
100/120V
T125A/250V
|
2110-0305
220/240V
TO.75SA/250V_
|
2110-0360
2-2
E1089
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Installation
2-6
POWER
CABLE
The
instrument
is
equipped
with
a
three-wire
power
cable.
When
connected
to
a
power
outlet,
this
cable
grounds
the
instrument
case.
The
type
of
power
cable
shipped
with
ea
Refer
to
Figure
2-1
for
part
numbers
of
the
power
cable
and
p
below
each
plug
is
the
Hewlett-Packard
part
number
of
a
power
power
cord
is
not
included
with
the
instrument,
notify
the
nearest
Hewlett-
replacement
will
be
provided.
ch
instrument
depends
on
the
country
of
destination.
jug
configurations
available.
The
number
shown
cord
equipped
with
that
plug.
If
the
appropriate
Packard
Sales
and
Service
Office
and
a
rarz0-1378
us
|
8120-2956
[8120-420
mo-a7sea]
Figure
2-1.
Plug
Configurations
The
colour
code
used
in
each
over
cable
is
given
below:
Table
2-2.
Colour
Codes
Line:
Brown
Neutrak
Blue
Ground:
-
Green/Yellow
2.7
OPERATING
ENVIRONMENT
Temperature:
The
instrument
may
be
operated
in
temperatures
from
0°
Centigrade
to
+55°
Centigrade.
Humidity:
The
instrument
may
be
operated
with
humidity
up
to
90%
up
to
40°
Centigrade.
However,
the
instrument
should
also
be
protected
from
temperature
extremes
which
may
cause
condensation
within
the
instrument.
Altitude:
The
instrument
may
be
operated
at
altitudes
up
to
4600m
(15000ft).
E1089
2-3

Installation
2-8 MATING CONNECTORS
Table 2-3 lists the connectors which mate with the instrument ports.
Table 2-3, Mating Connectors
2-9 RACK MOUNTING
Figure
2-2
illustrates
the
Rack
Mount
Kits
available
for
use
with
the
HP
8508A.
ated
Figure 2-2. Rack Mount Kits
2-4
E1089
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