HP 85020B User's Manual

 E
Tin
A
E
ECTIONAL
RIDGE
о B5020A
DIRECTIONAL BRIDGE
10 MHz - 4.3 GHz
E HEWLETT» PACK LED
MEDE 14 GBA
BRIDGE
SERIAL NUMBERS
This manual applies directly to the HP Model
85020A/B Directional Bridge with serial
numbers prefixed as follows:
Model Serial Prefix
85020A 2301A
850208 2308A
For additional information about serial
numbers, refer to INSTRUMENTS COVERED BY
MANUAL in Section I.
© Copyright HEWLETT-PACKARD COMPANY 1983
1400 FOUNTAIN GROVE PARKWAY, SANTA ROSA, CA 95401, U.S.A.
Manual Part No. 85020-90001
Microfiche Part No. 85020-90002 Printed: JUNE 1983
HEWLETT
General Information
Model 85020A/B
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Figure 1-1. Model 85020A Directional Bridge in Accessory Case Supplied
Model 85020A/B | General Information
Pa Pas SA ah ale an ale anh ark alae da ar
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{ CAUTION $
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ZA
The 85020A/B Directional Bridaes contain microcircuits that are
highly sensitive to electrostatic discharge (ESD). Damage from ESD
is most likely to occur as the bridges are connected or
disconnected. The surest method of protecting the 850204/B is for
the operator to wear a grounding strap that provides a path to
ground of no less than 1 Megohm and no more than 2.5 Megohns.
Alternatively the operator can ground himself before touching the
bridge connectors, by touching anv grounded instrument chassis.
Never touch the center contacts of the connectors,
Tests at Hewlett-Packard have revealed that repeated ESD charges
as low as 250 volts can destroy microwave diodes. Ordinary
activities around everyday materials can generate ESD voltages of
tens of thousands of volts. Materials conducive to static build-up
include floor carpeting, nylon clothing, dry air, paver, adhesive
tape, styrofoam, and vinyl. Use of the precautions described here
will considerably reduce the probability of damage from ESD.
For service purposes, a work station equipped with an anti-static
surface must be used. Use only anti-static solder removers and
grounded soldering irons. Some replacement parts mav be shipped in
static-protective packaging: remove the parts from this packaging
only at an anti-static work station while wearing the grounded
wrist strap. All anti-static safeguards should conform to state
and federal safety standards.
1-1
Model 85020A/B
General Information
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Figure 1-2. Models 850204 and 850208 Directional Bridges
Model 85020A/B General Information
SECTION 1
GENERAL INFORMATION
1-1. INTRODUCTION
1-2. This manual contains operating and service information for
the Hewlett-Packard Models 85020A and 85020B Directional Bridges.
Section I includes specifications and supplemental performance
characteristics, safetv considerations, instrument identification,
description, and other basic information. Figure 1-1 shows the
Model 85020A in the accessory instrument case supplied with each
instrument. Figure 1-2 shows both the 85020A and the 85020B
Directional Bridges.
1-3. On the title page of this manual is a microfiche part
number. This number may be used to order 10- by 15-centimeter (4-
by 6-inch) microfilm transparencies of the manual. Each microfiche
contains up to 60 photo duplicates of the manual pages. The
microfiche vackage also includes the latest Manual Changes
supplement as well as all pertinent Service Notes.
1-4, Refer any questions regarding this manual, the Manual
Changes suvplement, or the instrument to the nearest HP
Sales/Service Office. Always identify the instrument bv model
number, complete name, and complete serial number in all
correspondence. Refer to the inside rear cover of this manual for
a worldwide listing of HP Sales/Service Offices.
1-5. SPECIFICATIONS
1-6, Specifications for the 85020A/B are listed in Table 1~1.
These snecifications are performance standards or limits against
which the instrument may be tested. Table 1-2 lists supplemental
characteristics. These are not specifications but are intended to
provide information useful in apolying the instrument by giving
typical but non-warranted performance narameters,
1-7. SAFETY CONSIDERATIONS
1-8. The voltages present in the 850204/B are not in a range to
warrant more than normal caution.
General Information Model 85020A/B
| CAUTION }
The CAUTION sign in this manual calls
attention to an operating procedure or
practice which, if not correctly performed
or adhered to, could damage or destroy the
equipment. Do not proceed beyond a CAUTION
sign until the indicated conditions are
fully understood and met.
1-9, INSTRUMENTS COVERED BY MANUAL
1-10. This instrument has a two-part serial number, The first
four digits and the letter comprise the serial number nrefix, The
last five digits form the sequential suffix that is unique to each
instrument. The contents of this manual anplv directly to
instruments with a serial number prefix aiven on the title nage
under the heading SERIAL NUMBERS,
1-11, An instrument manufactured after the printing of this
manual may have a serial prefix that is not shown on the title
page. This unlisted serial prefix indicates that the instrument is
different from those documented in this manual. The manual for
such an instrument will be sunnlied with a yellow Manual Changes
supplement containing information to document the differences.
1-12. In addition to change information, the suvplement mav
contain information for correcting errors in the manual. To keep
this manual as current and accurate as possible, Hewlett-Packard
recommends that you periodically reguest the latest Manual Changes
supplement. The supplement for this manual is keyed to the
manual's print date and part number, both of which appear on the
title page. Complimentary copies of the supplement are available
from Hewlett-Packard.
1-13. DESCRIPTION
1-14, The 85020A and 85020B are Directional Bridges desianed to
be used in conjunction with the Hewlett-Packard Model 8756A and
8755C Scalar Network Analvzers for making scalar reflection and
transmission measurements. A single zero-biased Schottky diode
detector in the bridge samples the return loss of a device under
test for reflection measurements. Transmission measurements can be
made with the addition of a detector. A power splitter can be used
with the bridge for ratio measurements. A swept RF input signal is
supplied by a sweep oscillator or a synthesized sweeper.
1-15. The 85020A is a 50-ohm bridge with a frequency range of 10
MHz to 4.3 GHz. Both the input connector and the test port
Model 85020A/B General Information
connector are tyne-N (female). The 85020B is a 75-ohm bridge with
a frequency range of 10 MHz to 2.4 GHz. The connectors are both
tynpe-N (female).
1-16. EQUIPMENT SUPPLIED
1-17. The 85020A and 85020B Directional Bridges are each supplied
in an instrument case as illustrated in Figure 1-1.
1-18. EQUIPMENT REQUIRED BUT NOT SUPPLIED
1-19, The following equipment is required for use with the
85020A/B in making transmission and reflection measurements:
® HP Model 8756A or 8755C Scalar Network Analyzer.
6 HP Model 8350A/B Sweep Oscillator or 8340A Synthesized Sweeper.
@ HP Model 11664A detector (0.01 to 18 GHz).
e HP Model 85023C/D System Verification Kit (see Table 1-3).
1-20. Scalar Network Analyzer
1-21. The Model 8756A Scalar Network Analvzer 1s a microprocessor
based dual-channel receiver with its own digital display. It makes
scalar transmission and reflection measurements at RF and
microwave frequencies, over a dynamic range of -50 dBm to +10 dBm.
It can measure amplitude ratios up to 60 dB. The 8756A is
completely programmable through HP-IR (Hewlett-Packard Interface
Bus), and can control a plotter (HP 7470A or 9872C) or a swept
source (HP 8350B or 8340A) through the 8756 System Interface.
HP-IB is Hewlett-Packard's hardware, software, documentation, and
support for IFEEFE-488 and IFEC-625, worldwide standards for
interfacing instruments, The 85020A/B Directional Bridges are
designed to be used with the 8756A.
1-22. The 85020A/B Directional Bridges are also fully compatible
with the Model 8755C Scalar Network Analyzer. Although the 8755C
is not programmable, it also measures amplitude levels of -50 dBm
to +10 dBm and amplitude ratios of 60 dB over a frequency range
determined by the detectors used. The 8755C plugs into a Model
180-series display mainframe such as the 182T or the 180TR. In
applications where memory or normalization is required, the 8750A
Storage Normalizer is used in conjunction with the 8755C. In this
case, the displav mainframe used with the 8755€ may require
modification for interface with the 8750A. A tahle of
8750A/Display Mainframe compatibility is provided in Section I of
the 8755C Operating and Service Manual.
General Information Model 85020A/B
1-23. Both the 87564 and the 8755C use an AC detection technique
with an overating frequency of 27.8 kHz. This technique provides
nearly drift-free operation. An RF or microwave source signal is
modulated at 27.8 kHz and is input to the Scalar Network Analyzer
through one or more detector inputs, The detectors demodulate this
signal to produce a 27.8 kHz square wave whose peak-to-peak
voltage corresponds to the magnitude of the signal at the detector
input. Since only the 27.8 kHz modulated signal is detected,
unmodulated broadband noise and extraneous signals are eliminated
from the measurement.
1-24. Swept Signal Source
1-25. A complete system for making transmission and reflection
measurements requires a swept signal source to supply an RF input
signal. The Model 8350B Sweep Oscillator with an RF Plua-In
installed is an 8756A-compatible solid-state swept signal source
with a frequency range determined by the RF Plug-In, For example,
the Model 83525A/B RF Plug-In covers a frequency range of 0.01 to
8.4 GHz; and the Model 83522A has the same frequency range as the
85020B (0.01 to 2.4 GHZ). The 8350B is fully HP-IR programmable,
and can be controlled by the 8756A through the 8756 System
Interface. It has internal 27.8 kHz sauarewave modulation
capability.
1-26. The Model 8350A Sweep Oscillator is similar to the 8350R,
and is compatible with the 8756A. However, it does not have the
firmware to enable 8756A control through the 8756 System
Interface. Retrofit kits are available from Hewlett-Packard to
update the 8350A for interface performance comparable to the
8350B.
1-27. The Model 8340A Synthesized Sweeper is an analog sweep
synthesizer that generates svnthesized output frequencies from
0.01 to 26.5 GHz. It is a complete swept signal source requiring
no additional equipment. The 8340A is fully HP-IB programmable,
and can be controlled by the 8756A through the 8756 Svstem
Interface. The 8340A can be squarewave modulated at 27.8 kHz with
the Modulator Drive signal from the 8756A or 8755C Network
Analyzer,
1-28. Detectors
1-29, One or more Model 11664A detectors are used with the 8756A
or the 8755C and the 850204/8 Directional Bridges for making RF
transmission measurements. The 27.8 kHz modulated signal from the
device under test is applied to the 11664A detector (s) on the
Scalar Network Analvzer inputs. The 11664A demodulates this signal
to produce a 27.8 kHz sguare wave whose peak-to-peak voltage
corresponds to the madnitude of the signal at the detector input.
1-6
Model 85020A/B General Information
Each detector uses a biased Schottky diode to achieve -50 dBm
sensitivity. The frequency range of the 11664A is 0.01 to 18 GHz,
1-30. Power Splitter
1-31. Ratio measurements can be obtained using a power splitter
in conjunction with the scalar network analvzer and detector (s).
The HP Model 11667A power splitter has a frequency range of DC to
18 GHz.
1-32. EQUIPMENT AVAILABLE
1-33. Additional equipment available for use with the 8756A
Scalar Network Analyzer and the 85020A/B Directional Bridges is
listed in Section I of the 8756A Operating and Service Manual.
1-34. ACCESSORIES AVAILABLE
1-35. Table 1-3 lists 85023-series System Verification Sets
available for use with the 85020A/8 and the 8756A. These accessory
sets are supplied in a 50-ohm version and a 75-ohm version to
correspond with the impedance of the bridges. Each set contains a
high quality adapter, a standard short circuit, a matched
termination, and a 50-ohm 10-dB pad. Tn addition, the 50-ohm
version includes a standard open circuit; and the 75-ohm version
includes a 50-ohm to 75-ohm minimum-loss pad.
1-36. RECOMMENDED TEST EQUIPMENT
1-37. Table 1-4 lists recommended test equipment. This equipment
is used in performance testing of the 85020A/B. Other equipment
may be substituted, provided its svecifications equal or exceed
the specifications given in the Critical Snecifications column.
i- 3 8 > WARRANTY
1-39. Any attempt to perform any disassembly or repair procedure
not clearly outlined in Section VIII, Service, of this manual will
automatically void the warranty.
1-40. Subjection of the instrument to RF input power levels in
excess of +23 dBm will automatically void the warrantv.
General Information Model 85020A/B
Table 1-1. Specifications
85020A 85020B
Frequency Range (GHz) : * 0.01 to 4.3 0.01 to 2.4
Input Connector: Type-N (f) Туре-М (Е)
50 ohms 75 ohms
Output Connector: Туре-№ (Е) туре-№ (Е)
50 ohms 75 ohms
Maximum Power to Input Port: +23 dBm +23 dBm
Directivity:”
0.01 to 2.4 GHz >40 dB >40 dB
2.4 to 3.0 GHz >40 dB -
3,0 to 4,3 GHz >34 dB -
Test Port Match (SWR):
0.01 to 1.3 GHz <1.20 <1.25
1.3 to 2.4 GHz <1.20 <1.39
2.4 to 3.0 GHZ <1.20 —
3.0 to 4.3 GHz <1.25 -
Dimensions: 25 mm high x 110 mm wide x 96 mm deep
cable length:
(1.0 in x 4.3 in x 3.9 in)
1219 mm (48 inches)
Weight:
Net: 0.5 kg (1.2 1b)
Shipping: 2.3 ka (5 lb)
1-8
À
2
Unless otherwise noted, all specifications are at 0°C to 55°C.
25°C + 5°C,
Model 85020A/B
Table 1-2. Supplemental Characteristics
Values in this table are not svecifications, but are typical but
hon-warranted performance parameters included for user information.
General Information
Nominal Impedance:
o
=
i o
Typical =
Directivity ©
a 85020B 85020A
0.01 | 2.4 3.0 4.3
Frequency (GHz)
85020A 850208
Typical Input Port Match (SWR):
0.01 to 2.4 GHz <1.2 <1.2
2.4 to 4.3 GHZ <1.2 —
Typical Insertion Loss: 6.5 dB 6.5 ЯВ
Typical Detector Flatness
(Referenced to 1 GHz): +0.5 dB +0.5 dB
Minimum Input Power
for 40 dB Return Loss |
Measurement: +4 dBm +4 dBm
50 ohms 75 ohms
1-9
General Information Model 85020 A/B
Table 1-3. System Verification Sets
HP Model 85023C (Type-N, 50 Ohms)
(For Use with Model 85020A Directional Bridge)
HP Part or
Qty Accessory | Model Number
1 Type-N short 11512A
1 Type-N open 85032-60001
1 Type~N (m) to type-N (m) adapter 1250-1475
1 Type-N 50-ohm termination 909A Opt. 012
1 Type-N 10 dB pad 8491R Opt. 010
1 instrument case
1 Operating Note
HP Model 85023D (Type-N, 75 Ohms)
(For Use with Model 85020B Directional Bridge)
HP Part or
Oty Accessory Model Number
1 75-ohm type-N short 1250-1530
1 Type-N (m) to type-N (m) adapter 1250-1475
2 50-ohm to 75-ohm minimum loss pad 11852A
1 Type-N 75-ohm termination 1250-1532
1 50-ohm type-N 10 dB pad 8491B Opt. 010
1 instrument case
1 Operating Note
1-10
Model 85020A/B General Information
Table 1-4. Recommended Test Equipment
850208 85020B
Instrument Critical Specifications Recommended Test Model
Scalar Operating 8756A 8756A
Network Frequency: 27.8 kHz or or
Analyzer 85020A/B compatible 8755C/ 8755C/
Includes display 1827 1827
Sweep
Oscillator 8756A compatible 8350A/B 8350A/B
plus
RF Plug-In Frequency: 0.01-2.4 GHz 83522A
or
or Frequency: 0.01-4.3 GHz 83525A/B 83525A/B
Synthesized
Sweeper Frequency: 0.01-4.3 GHZ 8340A 8340A
Detectors (2) Frequency: 0.01-4.3 GHz 11664A 11664A
System Tynpe-N, 50 ohms 85023C
Verification Tyne-N, 75 ohms 85023D
Set (includes 75-ohm
(Table 1-3) matching pad)
Step Frequency: DC-4.0 GHZ 8495A 8495A
Attenuator 0-70 dB in 10-dRB steps Opt. 001 Opt. 00:
Digital Accuracy: +0.01% 3456A 3456A
Multimeter Input Impedance: >10M Ohms
Storage For use with 8755C 8750A 8750A
Normalizer where memory is required
This equipment is used for performance testing, adjustment, and
troubleshooting.
1-11/1-12
Model 85020A/B Installation
SECTION TI
INSTALLATION
2-1. INTRODUCTION
2-2. This section provides information about initial inspection,
preparation for use, mating connectors, packaging, storage, and
shipment.
2-3. INITIAL INSPECTION
2-4. Inspect the shipping container for damage. If the shipving
container or cushioning material is damaded, 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 contents of the shipment should be as shown in
Figure 1-1, Procedures for checking electrical performance are
given in Section IV, Performance Tests, of this Operating and
Service Manual. If the instrument does not pass the electrical
Performance Tests, and a circuit malfunction is suspected, refer
to Troubleshooting Procedures in Section VIII, Service, in this
manual. If the instrument does not pass the ahove electrical
tests, if the shipment contents are incomplete, or if there is
mechanical damage or defect, notify the carrier as well as the
nearest Hewlett-Packard Office. Keep the shipping materials for
the carrier's inspection. The HP Office will arrange for revair or
replacement without waiting for claim settlement.
2-5. PREPARATION FOR USE
2-6. Power Requirements
2-7. Power for the Model 85020A/8% Directional Bridge is obtained
from the Model 87564 or 8755C Scalar Network Analyzer,
2-8. Connecting the 85020A/B Directional Bridge
2-3. To connect the 850204/B for operation with the 8756A or
8755C Scalar Network Analyzer and the 8350A/B Sweep Oscillator,
proceed as follows:
1. Secure the connector of the power cable WI into the A, В, ог В
mating connector of the Network Analvzer by turning the outer
shell clockwise to tiahten.
2. Connect the RF output of the Sweep Oscillator RY Plug-In to
the input port of the 85020A/R.
Installation Model 85020A/B
2-2
A to a
{ CAUTION |}
PEE
Page gin o gf a ga
Do not apply more than +23 dBm RF power or
more than +10 volts DC into the 85020A/B.
If more than this power or voltage is
applied, the Bridge will be damaged.
3, The device under test is connected to the Bridge test port.
Typical measurement configurations are shown in Section ITT.
2-10. Mating Connectors
2-11, The mating connectors for the precision tvne-N connectors
of the 85020A/B are the corresponding precision tvne-N connectors
whose dimensions conform to US specification MIL-C-390172.
2-12. To extend the life of the connectors, it is recommended
that a precision adapter be used on the test port in any
application where some dearadation of directivity can be accepted,
Refer to Section III, Operation, for more information on connector
wear.
2-13. Operating Environment
2-14. ‘Temperature. The instrument may be operated in temperatures
from 0°C to +55°C.
2-15. Humidity. The instrument may be operated in environments
with humidity from 5% to 80% relative at +25°C to +40°C. However,
the instrument should also be protected from temperature extremes
which cause condensation within the instrument.
2-16. Altitude. The instrument may be operated at altitudes uv to
4572 meters (15,000 feet).
2-17. STORAGE AND SHIPMENT
2-18. Environment
2-19. The instrument may be stored or shipped in environments
within the following limits:
Temperature . e « e + + + + + + + + e о -40°C to +75°C
Humidity se + в чо о 5% to 95% relative at 0° to +40°C
Altitude 5 + + 5 + + = Up to 15240 meters (50,000 feet)
2-20. The instrument should also be protected from temperature
extremes which may cause condensation in the instrument.
Model 85020A/B Installation
2-21. Packaging
2-22. Original Packaging. Containers and materials identical to
those used in factory nackaging are available through
Hewlett-Packard offices. If the instrument is being returned to
Hewlett-Packard for servicing, attach a tag indicating the tyne of
service required, return address, model number, and full serial
number (located on the rear panel serial label). Mark the
container FRAGILE to ensure careful handling. In anv
correspondence, refer to the instrument bv model number and full
serial number.
2-23. Other Packaging. The following general instructions should
be used for renackaging with commercially available packaging
materials:
a. Wrap the instrument in anti-static plastic packaging material.
If shipping to a Hewlett-Packard Office or Service Center,
attach a tag indicating the tvpe of service required, return
address, model number, and full serial number.
b. Use a strong shipping container.
с, Use enough shock-absorbing material around all sides of the
instrument to provide a firm cushion and to prevent movement
inside the container.
de Seal the shipping container securely,
e. Mark the shipping container FRAGILE to ensure careful
handling.
f. In anv correspondence, refer to the instrument by model number
and full serial number.
2-3/2-4
Model 85020A/B Operation
SECTION TIT
OPERATION
3-1. INTRODUCTION
3-2. This section contains information for operation of the
850204/B Directional Bridges.
3-3. OPERATING PRECAUTIONS
§ CAUTION Ÿ
in ale ale a oe ah SE Re ¿e Ms he ai
SUSCEPTIBLE TO DAMAGE
FROM STATIC DISCHARGE
The 85020A/B Directional Bridges contain
microcircuits that are highly sensitive to
electrostatic discharge (ESD). Damage from
ESD is most likely to occur as the bridges
are connected or disconnected. The surest
method of protecting the 85020A/B is for
the operator to wear a grounding strap
that provides a path to ground of no less
than l Megohm and no more than 2.5
Megohms, Alternatively the operator can
ground himself before touching the bridge
connectors, by touching any grounded
instrument chassis. A work station
equipped with an anti-static surface
should be used. Never touch the center
contacts of the connectors.
Tests at Hewlett-Packard have revealed
that repeated ESD charges as low as 250
volts can destroy microwave diodes.
Ordinary activities around everyday
materials can generate ESD voltages of
tens of thousands of volts. Materials
conducive to static build-up include floor
carpeting, nylon clothing, dry air, paper,
adhesive tape, styrofoam, and vinyl. Use
of the precautions described here will
considerably reduce the probability of
damage from ESD.
3-1
Operation Model 85020A/B
Do not apply more than +23 dBm RF power or
more than +10 volts DC into the 85020A/B.
If more than this power or voltage is
applied, the 85020 will be damaged.
Ms ah a Ae de al me BL ne Lm an aim
Ni i a ag a a a a a ar
r
$ CAUTION $
li Adi Ai ab am Aa ¿sa mh de og
Do not drop the 85020A/B or subject it to
mechanical shock, as this may cause
internal damage.
3 4 = FEATURES
3-5, Features of the 85020A/B are shown in Figure 3-1.
3-6. CONNECTOR WEAR
X
4
y
$
Do not over-tighten the connectors of the
85020A/B bridges. Excessive torque will
deform the mating surfaces. To mate type-N
connectors, always turn only the nut of
the male connector. Never turn the
Directional Bridge when making a
connection. Tighten by hand only.
3-7. Repeated connections will cause the connectors to become
worn, with a consequent degradation of performance, To extend the
life of the connectors, it is recommended that an adaoter be used
on the test port in anv application where some degradation of
directivity can be accepted. For the most accurate measurements, a
high quality adapter should be used, and the adapter should be
periodically replaced. High quality adapters (low insertion loss,
low return loss, stable in use, and durable) are necessary to
achieve accurate, repeatable measurements. Calibrate for
measurement using the same adapters and interconnect cables that
will be used during measurement. To ensure repeatable measurements
the adapters and cables must be clean, in good condition, and
properly tightened. Start with the best available adapters and
calibration standards then replace them when they become unstable.
Appropriate adapters are included in the 85023-series System
Verification Sets listed in Section I of this manual.
3-8. The input port connector and the test port connector are
part of the microcircuit bridge assembly. This assembly may be
replaced with a new or a rebuilt assemblv. For information
Model 85020A/B Operation
concerning exchange assemblies, refer to Section VI, Replaceable
Parts, of this manual.
3-9, The connectors are not separately replaceable. Because they
are precision connectors and have contact internally with the
bridge microcircuit, they cannot be repaired in the field. An
attempt to replace or repair the connectors will probably cause
damage to the bridge microcircuit. In addition, special fixtures
are required for reassembly. For repair or replacement of any
connector, return the 85020A/B to Hewlett-Packard.
3-10. OPERATOR'S CHECK
3-11. Figure 3-2 is an operator's check of the 85020A, which
allows the operator to make a quick check of the main system
functions prior to use. Figure 3-3 is an operator's check of the
85020B. The procedures cover the entire measurement system and
incorrect indications may be caused by any portion of the system.
If the Directional Bridge is susnected, use the performance tests
in Section IV to determine if the bridge is working correctlv. If
not, refer to Section VIII, Service, to isolate the problem.
3-12. OPERATING INSTRUCTIONS
3-13. Instructions for operating the 85020A/B Directional Bridge
with the Model 8756A Scalar Network Analyzer are supplied in
Section III of the 8756A Operating and Service Manual. Fiaure 3-3
illustrates a tvpical instrument setup for transmission and
reflection measurements using the 85020A/B with the 8756A.
3-14, The 8755C Scalar Network Analvzer mav be substituted for
the 8756A, with the addition of the 8750A Storage Normalizer in
applications where memory is required. In this case, the display
mainframe used with the 8755C mav reguire modification for
interface with the 8750A. A table of 8750A/Displav Mainframe
compatibility is provided in Section I of the 8755C Operating and
Service Manual. Figure 3-4 shows a typical measurement setup using
the 8755C and the 8750A. |
3-15. Ratio measurements can be obtained using a power splitter
in conjunction with the scalar network analyzer and detector (s).
Figure 3-5 illustrates a tvpical ratio measurement using a power
splitter,
3-16. 75-OHM OPERATION
3-17. For making measurements of 75-ohm devices using the 850208,
two 50-ohm to 75-ohm minimum loss matching pads are required. One
of these is connected between the signal source and the invut port
of the 85020B, The other is connected between the device under
test and the 11664A detector on the input of the Scalar Network
Analyzer.
3-3
Operation
Model 85020A/B
Test Port Connector J2 (Precision Type-N). The device under
test or a calibration short or open is connected to this
point.
Input Port Connector Jl (Precision Type-N). The RF input
signal is applied to this connector.
Power Supply Cable Wl. Supplies DC voltages to the 85020A/B
preamplifier and feeds a voltage proportional to the signal
reflected from the device under test to the Network Analvzer
input.
Figure 3-1. 850204/B Features (Rear View)
Model 85020A/B
Operation
85020A OPERATOR'S CHECK
SWEEP POS Z
ОНТ BLANK
SE Ë
SWEEP ¡| OE: O O cosgg |
OSCILLATOR | 55 53 ano E y eon || PLUG-IN
SE 0080000
г = =| SHORT
BRIDGE = Но = 7710 В РАО
Г Loren
EQUIPMENT
Sweep Oscillator + + + + + + + + + + + + HP 8350A/B
RE Plug- In = = * i» - + + a > > * > » + HP 83525A/B
Scalar Network Analyzer e . _. еее ‚> HP 8756A
10~dB Attenuator oo о к e + + HP 8491B Option 010
Calibrated Short Circuit e a a e a a +» e + HP 11512A
Shielded Open Circuit . . . . HP Part No. 85032-60001
PROCEDURE
1. Connect equipment as shown above.
2. Set up the test equipment as follows:
On the 8350A/B, press [INSTR PRESET] [SHIFT] [CW] [5] [0]
[MHz] to set the signal to 50 MHz swept CW. Press [SWEEP TIME]
[11 [5] [0] [ms]. Press [lf] MOD] to turn on squarewave
modulation. On the Scalar Network Analyzer, press [SHIFT] and
Channel 2 [MEAS RATIO] to turn off Channel 2.
Figure 3-2. 850204 Operator's Check (1 of 2)
3-5
Operation Model 85020A/B
Perform an OPEN/SHORT calibration as follows:
Press 8756A MAIN MENU soft keys [CAL] [OPEN/SHORT] [CHAN 11.
Connect the calibrated short to the test port of the 85020A,
and press [STORE SHORT] to store the short calibration data.
Remove the short and connect the shielded open to the test
port. On the 8756A press [STORE OPEN] to store the open
calibration data. On the 8756A Channel 1 press DISPLAY] until
M-MEM is selected. The Channel 1 normalized trace will be
displayed.
Remove the shielded open and connect the 10-dB Attenuator to
the 85020A test port. Leave the other end of the attenuator
unterminated.
On the 8756A press [CURSOR]. The return loss of the
unterminated pad (10 dB in each direction) will be displayed.
The display should read -20 dB +2dB.
3-6
Figure 3-2. 850204 Operator's Check (2 of 2)
1.
2.
BRIDGE
|
EQUIPMENT
Sweep Oscillator о о. о + + + >» o. .
RF Plug-in
500-750 MATCHING PAD
= — | SHORT
I
ma bee =] 500-750 MATCHING PAD
LJ # + ® » + + + + * + +
Scalar Network Analyzer . . + + + À
10-dB Attenuator e + + + + + + à
Calibrated 75-Chm
Short Circuit . a. . +. в ое HP Part No. 1250-1530
50-Ohm to 75-Ohm Minimum Loss Pads (2)
PROCEDURE
Connect equinment as shown above.
Set up the test equinment as follows:
On the 8350A/B, press [INSTR PRESET] [SHIFT] [CW] [5] [0]
[MHz] to set the signal to 50 MHz swept CW. Press [SWEEP TIME]
Press [LM MOD] to turn on squarewave
modulation. On the Scalar Network Analyzer, vress [SHIFT] and
Channel 2 [MEAS RATIO] to turn off Channel 2.
[1] [5] [0] [ms].
Tore tt RE ETES
Model 85020 A/B Operation
850208 OPERATOR'S CHECK
POS 7 | SWEEP
BLANK Y EN
SWEEP POS 7 A >.
QUTHN BLANK ono
oi SCALAR
Ren RE | NETWORK
76 eee | PLUG-IN © | ANALYZER
. a HP 8350A/B
ЯР 83522A/83525A/B
+ a HP 8756A
‘HP 84918 Option 010
. + HP 11852A
Figure 3-3. 85020B Operators Check (1 of 2)
3-7
Operation Model 85020A/B
Perform an OPEN/SHORT calibration as follows:
Press 8756A MAIN MENU soft keys ICALI [OPEN/ SHORT] [CHAN 11.
Connect the 75-ohm calibrated short to the test port of the
85020B, and press [STORE SHORT] to store the short calibration
data. Remove the short and leave the test port open. On the
8756A press [STORE OPEN] to store the open calibration data.
On the 8756A Channel 1 press [DISPLAY] until M-MEM is
selected. The Channel 1 normalized trace will be displayed.
Connect the minimum loss pad to the 85020B test port. Leave
the other end of the minimum loss pad unterminated.
On the 8756A press [CURSOR]. The return loss of the
unterminated minimum loss pad (5.7 AB in each direction) will
be displayed. The display should read -11.4 dB +2 dB,
Figure 3-3. 85020B Operator's Check (2 of 2)
For 750 measurements using the 850208, refer to paragraph 3-16.
SWEEP POS Z
DUT/IN L
| SCALAR
| | NETWORK
= S | ANALYZER
Os: © gl O, RF
OSCILLATOR ¡556 56 sen & NON PLUG-IN
AD se Boo =
mr eee
1000600
80880
DEVICE
UNDER
TEST DETECTOR
BRIDGE
—
Figure 3-4. Typical Measurement Setup Using 87564
Model 85020A/B Operation
NETWORK
ANALYZER/
DISPLAY
NORMALIZER
INTERCONNECT
CABLE
SWEEP POS 7
OUTAN d |
SWEEP || Oe LO; RF
OSCILLATOR SC 58 don E 666L PLUG-IN
HN E ENNE
BETZ - - - NNEN
8.5 O вес
DEVICE 4
UNDER
TEST
DETECTOR
EJ ES LJ MA TO EJ 17
BRIDGE
m ве ка og
any ERE
STORAGE
NORMALIZER
For 7582 measurements using the 850208, refer to paragraph 3-16.
Figure 3-5. Typical Measurement Setup Using 8755C with 87504
POS Z SWEEP
SWEEP BLANK y $
oUTIN | = =>»
В вов С) заве
5 ol. onoiS8| SCALAR
SWEEP = = mago | NETWORK
BSCILLATGR Pe ERE, ¿| ANALYZER
BETECTOR
Ri
POWER OPEN
SPLITTER
I SHORT
}
BRIDGE e [Jn
i DEVICE p DETECTOR
; UNDER |
TEST
For 7682 measurements using the 850208, refer to paragraph 3-16,
Figure 3-6. Typical Measurement Setup Using Power Splitter
3-9/3-10
Model 85020A/B Performance Tests
SECTION IV
PERFORMANCE TESTS
4-1. INTRODUCTION
4-2. The procedures in this section test the electrical
per formance of the 85020A/B using the specifications of Table 1-1
as the performance standards. All tests can be performed without
access to the interior of the instrument.
4-3. EQUIPMENT REQUIRED
4-4. Equipment required for the performance tests is listed in
the Recommended Test Equipment table in Section I. Any equipment
that satisfies the critical specifications given in the table may
be substituted for the recommended model.
4-5. PERFORMANCE TEST RECORD
4-6, Results of the performance tests may be tabulated on the
Performance Test Record at the end of the procedures. The
Performance Test Record lists all of the tested specifications and
their acceptable limits. Test results recorded at incoming
inspection can be used for comparison in neriodic maintenance and
troubleshooting and after repairs or adjustments. |
Performance Tests | Model 85020A/B
4-7. DIRECTIVITY
Specifications:
85020A | 85020B
0.01 to 2.4 GHz >40 dB >40 dB
2.4 to 3,0 GHz | >40 dB —
3.0 to 4.3 GHz >34 dB --
Description:
Directivity is a measure of the ability of a directive device to
discriminate between incident and reflected signals. In principle,
directivity can be measured when the TEST port is terminated with
a perfect load to eliminate all reflected signals. Any remaining
signals detected are the directivity errors. However, since no
perfect load is available, the test procedures below make
allowances for this external error.
First an open-short calibration is performed. Then a fixed load
(termination) with the best possible return loss is connected to
the TEST port, and the new measured value is recorded.
Equipment:
Sweep Oscillator e e + + + + + + + + + + + HP 8350A/R
RF Plug-In в + в о. о о вое ее HP 83522A/83525A/R
Scalar Network Analvzer + + + + + + + + + + + HP 8756A
For Use with 85020A (50-Ohm)
50-Ohm Type-N Short +. + + + + + + sa + + + + HP 11512A
50-0hm Shielded Open » e e + e + + >» a HP 85032-60001
50-Ohm Termination а о в e e e +» + e HP 909A Opt. 012
For Use with 850208 (75-Ohm)
50-Ohm to 75-Ohm Minimum Loss Pad . . + + HP 11852A
715-Ohm Type-N Short . +. + +» + + + + + + + HP 1250-1530
75-Ohm Termination e ae. a a s+ eo o + 0 HP 1250-1532
Se al aie ah ae pie ai din he aim me am i
{ CAUTION }
a sale a ale oe a ale ale i an
Do not mix 50-ohm and 75-ohm hardware, as
this may damage the connectors.
Model 85020 A/B Performance Tests
EX
>
=
>
dl.
QUTAN
POS Z 1 SWEEP
SWEEP POS 7 ! ÿ IN
k
SCALAR
NETWORK
-- i ANALYZER
— :
E
SWEEP Lt dé oo 26288) 008 RF
GSCILLATOR : - ‘Go où eo 20600 ga 868 | PLUG-IN
ME nonoono
109810
RF
OT
BRIDGE DP y == uf] SHORT
fr == = wi) OPEN
;
FIXED
| - - LOAD
Figure 4-1. Directivity Test Setup
Procedure
1. Connect the equipment as shown in Figure 4-1, If the
Directional Bridge is an 85020B, connect the Model 118528
50-ohm to 75-ohm minimum loss pad between the output of the RF
Plug-In and the input port of the Directional Bridge. Do not
connect the fixed load (termination) at this time. Allow the
equipment to warm up for 30 minutes,
2. Set up the test equinment as follows:
On Sweep Oscillator, press [INSTR PRESET] [SWEEP TIME] [1] [5]
[0] [№58] fi FI MOD]. On the RF Plug-In, RF power is ON. On the
Scalar Network Analyzer, press [PRESET], then turn off Channel
2 by pressing [SHIFT] and Channel 2 [MEAS RATIO].
3. On the 8350A/B Sweep Oscillator, set the START and STOP
frequencies to correspond to the first band of freguencies in
Table 4-1, the Performance Test Record (0.01 to 2.4 GHz).
4, Perform an open/short calibration, using the correct equipment
listed above for the respective Directional Bridges. For OPEN
calibration of the 85020B, leave the test port unterminated.
5. Connect the fixed load to the TEST port of the 85020А/В. On
Performance Tests Model 850204/B
the 8756A, press [SHIFT] [SCALE] for the AUTOSCALF function,
then press [CURSOR] [CURSOR MAX 1] to find the point of
minimum return loss (the high point on the trace). Record the
displayed CURSOR value on the Performance Test Record, Table
4-1. This value represents the scalar sum of directivity
signals (desired measurement) plus reflected signals from the
fixed load (undesired error). Thus, fixed load quality
directly affects the quality of directivity measurements.
Refer to Figure 4-2. The shaded areas in this fiqure indicate
the probable range of measurable values for each specified
directivity value. On the horizontal axis, locate the fixed
load's reflection coefficient or its specified return loss
(convert from SWR, if necessarv). Move up from this point to
the upper limit of the shaded area between the diagonal lines.
Enter the value of this upper limit on the Performance Test
Record, Table 4-1. Allowing for the load error, anv
directivity measurement that falls below this limit indicates
that the 850204/8 is probably within specifications for the
frequency band of interest. If the measurement falls above the
upper limit, the bridge does not meet svecifications, and
troubleshooting procedures should he per forme,
On the 8350A/B Sweep Oscillator, set the START and STOP
frequencies to the next hand listed in Table 4-1 (2.4 to 3.0
GHz). Repeat Steps 4 and 5.
Measured
Value
Directivity — (p)
(dB)
28.0 030
31.1 028
31.7 026
32.4 024
33.2 022 a
34.0 020 e НЫ
34.9 018
359 016
37.1 014
38.4 012
40.0 010 -
41.9 008
44 4 006
48.0 204
54.0 002
ео 0 PP ЩЕ
0 001 002 003 004 005 006 007 .008 .009 010 (р)
co 60 54 50.5 48 46 444 43.1 42 40.9 40 (Retum Loss)
Specified o or Return Loss of Load
Figure 4-2. Probable Range of Measurable Directivity Values
Model 85020A/B | Performance Tests
4-8. TEST PORT MATCH (SWR)
Specifications:
85020A 85020B
0.01 to 1.3 GHz <1.20 <1.25
1.3 to 2.4 GHZ <1.20 <1.39
2.4 to 3.0 GHz <1.20 -
3.0 to 4.3 GHZ <1.25 -
Description:
Using a tvpical reflection measurement setup, another Directional
Bridge is used to measure the test port SWR of the Directional
Bridge under test. The RF IN port of the Directional Bridge under
test must be properly terminated.
POS Z SWEEP
SWEEP POS 7 PLANK y N
Е
QUT/IN BLANK La >>
| NETWORK
SWEEP
OSCILLATOR | ANALYZER
a onenado
79027
mamo
TE
ADAPTER
BRIDGE [T7
| | BRIDGE Not
mim pr
Connected
| DEVICE UNDER TEST
= = OPEN
L - — | SHORT
Figure 4-3. TEST Port SWR Test Setup
Equipment:
Sweep Oscillator о о + + e a a e » e e * e HP 8350a/B
RF Plug-In e о 6 + о в. о во ве + 6 HP 83522A/83525A/B
Scalar Network Analyzer 2 + + + o 2 + + + + + HP 8756A
Directional Bridoe* . « . » » e e e e ee Hp 85020A/R
Adapter, Tvne-N (m) to Type-N (m) e ee = a » HP 1250-1475
*A second Directional Bridae of the same tvne is required
as a test instrument in addition to the Directional Bridge
under test. |
4-5
Performance Tests Model 85020A/B
Equipment (continued)
For Use with 85020A (50-Ohm)
50-Ohm Type-N Short . . e e e «= « ele. a. HP 11512A
>0-Ohm Shielded Open + e e + + + e e a HP 85032-60001
50-Ohm Termination oo + + + a+ + + à HP 909A Oot, 012
For Use with 850208 (75-Ohm)
50-Chm to 75-Ohm Minimum Loss Pad . . + . © HP 1185248
75-Ohm Tyne-N Short . . + +4 2 « e « 3 + © HP 1250-1530
75-Ohm Termination » . . e e + + + + + + HP 1250-1532
у CAUTION 3
Do not mix 50-ohm and 75-ohm hardware, as
this may damage the connectors.
Procedure:
1.
4-6
Set up the equipment as shown in Figure 4-3, with the
appropriate calibrated short connected to the Directional
Bridge (the test device, not the device under test). If the
Directional Bridge is an 85020B, connect the Model 11852A
50-ohm to 75-ohm minimum loss pad between the output of the RF
Plug-In and the invut port of the Directional Bridge.
Set up the test equipment as follows:
On the Sweep Oscillator, press [INSTR PRESET] [SWEEP TIME] [1]
[5] [0] [ms] [LF] MOD]. On the Scalar Network Analvzer, press
[PRESET], then turn off Channel 2 by pressinc [SHIFT] and
Channel 2 [MEAS RATIO].
On the 8350А/В Sweep Oscillator, set the START and STOP
frequencies to correspond to the first band of freaguencies in
the Performance Test Record (0.01 to 1.3 GHz).
Perform an open/short calibration using the correct equipment
listed above for the respective Directional Rridges. For OPEN
calibration of the 85020B, leave the test port unterminated.
Connect the Directional Bridge under test to the first
Directional Bridge, TEST port to TEST port, using an adapter.
Leave the cable of the Directional Bridge under test
unconnected. Connect a matched load to the input port of the
Directional RBridae under test,
On the 8756A, press [SHIFT] [SCALE] for the AUTOSCALE
function, then press [CURSOR] [CURSOR MAX 1] to find the point
of minimum return loss (the high point on the trace). Use the
reflectometer calculator to convert this measured return loss
Model 85020A/B Performance Tests
to SWR. Enter this value on the Performance Test Record, Table
4-1.
On the Sweep Oscillator, set the START and STOP frequencies to
the next band of interest listed on the Performance Test
Record. Repeat steps 4 through 7 for each frequency band.
Performance Tests
Model 85020A/B
Table 4-1. Performance Test Record
DIRECTIVITY
Scalar Sum of Upper Limit
Frequency Range Step Directivity Signals (from Fig. 4-2)
0.01 to 2.4 GHZ 5
2.4 to 3.0 GHz 5
3.0 to 4.3 GHz 5
TEST PORT MATCH (SWR)
Calculated Specified
Frequency Range Step SWR Upper Limit
85020А 85020B
0.01 to 1.3 GHz 6 1.20 1.25
1.3 to 2.4 GHz 6 1.20 1.39
2.4 to 3.0 GHZ 6 1.20 -
3.0 to 4.3 GHz 6 1.25 —
Model 85020A/B Adjustments
SECTION V
ADJUSTMENTS
5-1. INTRODUCTION
5-2. There are no adjustments recommended for regular calibration
or normal use of the 85020A/B Directional Bridge. However, if the
internal bridge microcircuit is replaced, adjustments must be made
to compensate the preamvlifier for the individual diode
characteristics. The procedures for replacing the bridge
microcircuit and adjusting the preamplifier are described in
Section VIII, Service, of this manual.
5-1/5-2
Model 85020A/B | Replaceable Parts
SECTION VI
REPLACEABLE PARTS
6-1. INTRODUCTION
6-2. This section contains information for ordering parts. Table
6-1 lists the available exchange assemblies. Table 6-2 lists
abbreviations used in the parts lists and the names and addresses
that correspond with the manufacturers' code numbers. Tables 6-3A
and 6-3B list the replaceable parts in reference designator order
for the 85020A and 85020B separately. Only the listed parts are
replaceable,
6-3. EXCHANGE ASSEMBLIES
6-4. The microcircuit bridge assembly, including input and test
port connectors and the reference termination, may be replaced on
an exchange basis, thus affording a considerable cost savings.
Table 6-1 lists these assemblies for both Directional Bridges,
together with the part numbers for the exchange assemblies.
Exchange, factory repaired and tested assemblies are available
only on a trade~in basis: therefore, the defective assemblies must
be returned for credit. For this reason, assemblies required for
spare parts stock must be ordered by the new assembly part number.
6-5. ABBREVIATIONS
6-6. Table 6-2 contains three major sections: Reference
Designations expands the designators used in the parts list;
Abbreviations defines all abbreviations used in the descrintions
of replaceable parts; Manufacturers Code List references the name
and address of a typical manufacturer with the code number
provided in the parts list.
0-7. REPLACEABLE PARTS LISTS
6-8. Tables 6-3A/B are the lists of replaceable parts for the
85020A and 85020B resvectively, and are organized as follows:
a. Electrical assemblies and their components in alpha-numerical
order bv reference designation.
b. Chassis-mounted parts in alnha-numerical order bv reference
designation.
с. Miscellaneous parts,
6-1
Replaceable Parts | | Model 85020 А/В
6-9. The information given for each part consists of the
following:
a. The Hewlett-Packard part number.
b. Part number check digit (CD),
с. The total quantitv (Oty) in the instrument,
d. The description of the part.
e. A typical manufacturer of the part in a five-digit code.
£. The manufacturer's number for the part.
6-10. The total quantity for each part is given only once for
each instrument - at the first appearance of the part number in
the list for that instrument.
6-11. ILLUSTRATIONS
6-12. Figure 6-1, Replaceable Parts Identification, illustrates
the locations of miscellaneous replaceable parts, some of which
are also listed in Tables 6-3A/B. These parts are denoted with
reference designation prefix MP,
6-13. ORDERING INFORMATION
6-14. To order a part listed in the Replaceable Parts Lists,
quote the Hewlett-Packard part number with its check digit (CD),
indicate the quantity, and address the order to the nearest
Hewlett-Packard Office, The check digit will ensure accurate and
timely processing of vour order.
6-15. To order a part that is not listed in the Replaceable Parts
List, include the instrument model number, instrument serial
number, description and function of the part, and the number of
parts required. Address the order to the nearest Hewlett-Packard
Office,
Table 6-1. Exchange Microcircuit Bridge Assemblies
(Includes input and test port connectors and reference termination.)
NEW PART REBUILT-EXCHANCE
INSTRUMENT NUMBER PART NUMBER
85020A 5086-7375 5086-6375
85020B 5086-7391 5086-6391
Model 85020A/B
Replaceable Parts
Table 6-2. Manufacturers Code List Reference Designations and Abbreviations
MANUFACTURERS CODE LIST
MFR NO MANUFACTURER NAME ADDRESS ZIP CODE
00000 ANY SATISFACTORY SUPPLIER
06383 PANDUIT CORP TINLEY PARK IL 60477
06665 PRECISION MONOLITHICS INC SANTA CLARA CA 85050
15526 METRIC AND MULTISTANDARD
COMPONENT CORP ELMSFORD NY 10523
24546 CORNING GLASS WORKS BRADFORD PA 16701
28480 HEWLETT-PACKARD CORP HO PALO ALTO CA 04304
REFERENCE DESIGNATIONS
A... Assembly В... Resistor
AT... Termination О... Integrated Circuit
C... Capacitor TP... Test Point
CR... Diode MP... Miscellaneous Part
J... Jack, Connector W... Cable, Wire
ABBREVIATIONS
ADJ... Adjust, Adjustment MTG... Mounting
AWG... American Wire Gage NS... Nanosecond
CER... Ceramic NYL... Nylon (Polvamide)
CHAM... Chamfer OP AMP... Operational
COND... Conductor Amplifier
CORR... Corrugated PF... Picofarad
CR... Crystal Rectifier PKG... Package
DBL... Double PL... Plate, Plug
DEG... Degree PRCN... Precision
DIA... Diameter RLG... Rolling
DIP... Dual In-Line Package RSC... Regular Slotted
DO... Package Type Designation Container
F... Film (Resistor), Fixed SCR... Screw
FLH... Flat Head SLDR... Solder
FXD... Fixed T... Tab Width, Taper
HEX... Hexagonal TA... Tantalum
IC... Integrated Circuit TC... Thermoplastic
ID... Inside Diameter THD... Thread, Threaded
IN... Inch THK... Thick
INTL... Internal TO... Package Type Designation
K... Kilo TRMR... Trimmer
LG... Length, Long ТЕМ... Turn, Turns
LK... Lock UF... Microfarad
M... Mounting Hole Diameter М... Volt, Voltage
MA... Milliampere VDC... Volts, Direct Current
MACH... Machined W... Watt, Wattage |
MM... Millimeter WD... Width
6-3
Replaceable Parts
Table 6-34. Model 850204 Replaceable Parts
Model 85020A/B
Reference HP Part с Q 4 Mfr
N . t Description Mfr Part Number
Designation | Number |? y р Code
Al 5086-7375 3 1 BRIDGE ASSEMBLY (INCLUDES CONNECTORS 28480 5086-7375
dl AND JZ AND
REFERENCE TERMINATION ATL)
Al 5086-6375 1, REBUILT 5086-7375 28480 5086-6375
AZ 85020-60001 | 5 3 BOARD ASSEMBLY-PREAMPLIFIER 28480 85020-60001
A2CL 0180-2784 5 2 CAPACITOR-FXD 3.3UF+20% 35YDC TA 28480 0180-2704
А2С2 0180-2794 5 CAPACITOR-FXD 3.3UF+20% 35VDC TA 28480 0180-7794
AZC3 0165-3878 6 1 CAPACITOR-FXD 1000PF+20%8 180VDC CER 28480 0160-3878
A2CRI 1901-0050 3 2 DIODR-SWITCHING 80V 200MA 2NS DO-3% 1901-0058
AZCR2 1901-0050 3 DIODE-SWITCHING 80V ZOOMA 2NS D9-35 0050
A2RI 0698-7205 0 1 RESISTOR 51,1 1% .05W F TC=0+100 BETO 5 RY -F
A2RZ 2190-3710 6 1 RESESTOR-TRME 10 10% С TOP-ADI 1-TR6 “Ces 210
AIR 0698-7248 1 1 RESISTOR 3.16% 1% ‚05W F TC=0+100 7 C3<L/8-T0-3161—-F
AZRÉ 2100-3253 7 1 RXSISTOR-TRMR SOK 188 C TOP-AÑJ 1-ren 2100-3253
ARE 0698-7212 9 1. RESISTOR 100 1% 0568 F TE=O+1N0 C3—1/8-T0-TN0R-F
АЗОВ 1826-01932 5 i TC OP AMP PRON E-DIEP-C ВЕС DERIVED
A27P1 0360-0535 0 7 TERMINAL-TEST POINT .3301 0360-0535
MP3 5001-1590 4 1 DRESS COVER 5901-1590
MP? 7100-1275 4 1 END COVER 7100-1275
MP3 5021-3587 5 1 EXTRUDED FRAME 5021-3587
MP4 7100-1276 5 1 PORT COVER 7100-1276
MES 2980-0001 8 3, NUT-HEX-DBL<CHAM J {Bw 2950-0001
MPE 2190-901:6 3 1 WASHER-LX INTL 77—IN-E5" 2199-0016
MP 7 0360-1199 5 I THAMINAL-SLDR | OR-$3/8-9CR 28480 (366-1198
MP8 0515-0823 8 4 SCREW-THD=-RLG e 28480 0515-0872
MP9 1531-0289 $ 1 BRIDGE SPACER 28480 1531-0289
MPIO 0515-0870 5 4 SCREW-MACH M2 15526 9I535X (M2,5)
MPL T121-430% = 1 ESOZ0A IDENTIFICATION L 5 78480 1421-4309
МРТ? 1400-0249 a 1 CABLE Tif. 0f .6I5-DIA vi, (6383 PLTIM-B
MP13 1540-0181 5 1 NS 28480 1540-0181
MP 14 85970-80001 | 7 t 28489 85020-80001
MPIS 7121-4311 9 1 28480 7121-4311
MPI6 5952-0048 9 1 28480 5952-0948
MPI7 3211-9048 2 1 28480 9711-0046
El 8120-3804 28480 8120-3804
6-4
See introduction to this section for ordering information
Indicates factory selected value
Model 85020A/B Replaceable Parts
Table 6-3B. Model 850208 Replaceable Parts
Reference HP Part ¡ec A Mfr
Desi . 5] Qty Description Mfr Part Number
esignation | Number Code
al 5086-7391 3 1 BRIDGE ASSEMBLY (INCLUDES CONNECTORS 28480 5086-7391
Jl AND J2 AND
REFERENCE TERMINATION ATE)
Al 5085-6391 1 REBUILT 5086-7391 284580 5086-6391
A2 85020-60001 | 5 1 BOARD ASSEMBLY-PREAMPLIFIER 28480 85020-60001
A2C1 0180-2794 5 2 CAPACITOR-FXD 3, 3UF+20% 35VDC TA 28480 6180-2794
A262 1189-2794 5 CAPACITOR-PXD 3.3UF+20% 35VDC TA e 0180-2794
A203 0160-3878 6 L CAPACITOR-FXD 1000PF+20% 100VDC CER 0160—3878
A2CRI 1901-0050 3 2 DINDE-SWITCHING BOV 200MA 2NS DO-35 4901-0050
A2CR2 1901-0950 3 DINDE-SWITCHING 20V 200MA 2NS 50-35 1-0050
R2R1 0698-7265 0 1 RESISTOR $1.1 1% .05W F TC=0+100 % 9-TO-51R1-F
A2R2 2100-3210 6 1 RESISTOR-TRMR ÎOK 19% C TOP-ADZ 1-TR -3230
A2R3 0698-7248 1 } RESISTOR 3.16K 1% .05W F TC=0+100 /8-TO-3161-F
A2RÂA 2190-3253 7 } RESISTOR-TRMR 50K 10% OO TOP-AMT 1- DRM = 3253
AQRS 0698-7212 q ! RESISTOR 100 15 ,05W P TC=N+1000: 3-1/8-TO-190R-#
AZUL 1826-0932 0 1 TC OP AMP PRON 5-NTP-C P права
A2TPY 0360-0535 0 1 TERMINAL-TEST POINT .33 0360-0535
MP1 5001-1590 4 1 PRESS COVER 28480 5081-1590
MP2 7100-1275 4 1 AMT} COVER 28480 1100-1875
MES 5325-3587 5 1 EXPRIITED FRAME 25450 2121-3587
MP 4 7100-1276 5 1 PORT COVER 28480 7109-1276
MES 2950-0001 8 1 SUT-HEX-—DBI-CF 28480 2950-0001
MPG 2180-0016 3 3 WASHER-LK INGLY 3/8-% 28480 2190-0016
MP7 9360-1190 5 1 FERMINAL-SLUR UG 28489 0360-1190
MP8 0515-0823 8 4 SCREW-THD-RIG ME 78480 9515-0823
MP9 1531-0289 5 3 BRIDGE SPACER 5-57 | | 28486 1531-0289
MPIO 0515-0820 5 4 SCREW-MACH M2XD.4 SMM- F LH 15526 9635Х (М2. 5)
MP11 7121-4534 8 1 e 28480 | 7121-4534
MP12 1400-0249 0 1 EE 06383 PLTIM-B
MP13 1540-0181 5 1 150708 INSTRUMENT 28480 1540-6181
MPl4 85029-86001 | 7 1 FORM PAD IN ENGPRIMENT CAST : 28480 85020-80001
MPLS 7121-4535 9 1 IYSTRUMENT CASE РАВ: 28480 7121-4535
MP6 5952-0948 9 1 RESLECGTOMETER СА! TOR 2r480 5952-0948
MP17 9211-0046 2 +, Ton. RSC É2.5-TN-LG 8,625-IN-#h 28489 9211-0046
Wl 8120-3864 24-ANG 4-COND 28480 8120-3804
See Introduction to this section for ordering information
*Indicates factory selected value
Replaceable Parts
Model 85020A/B
85020A/B
MP10
MP9 (ON BACK)
MP3 (NOT SHOWN) — (4 PLACES)
: ЗУ
ТОРН
SHEEN
A
В
rng edna
snl
ve
о
МР5 А2
aaa a A
CAUTION
Flog, mmm, a a E tiny
Mo ii a
E aly
Input Connector J1l and Test Port Connector J?
are precision connectors and are not
Separately replaceable. Do not disassemble J1
or J2 or attempt to replace them or any of
their component parts. Any attempt to per form
Ji
EN
pe
any disassembly or repair procedure not
clearly outlined in Section VIII, Service, of
this manual will automatically void the
warranty. Damaged connectors can be repaired
or replaced only by Hewlett-Packard.
veus
=
Figure 6-1.
35020A/B Replaceable Parts Identification
Model 85020A/B Manual Changes
SECTION VIX
MANUAL BACKDATING CHANGES
7-1. INTRODUCTION
7-2. This section of the manual normally contains backdating
information to adapt the manual so that it applies to earlier
versions or configurations of the instrument which may be slightly
different in design or appearance. Later versions of the
instrument will be documented in a yellow Manual Changes
supplement.
7-3. Since there are no earlier versions of the HP Model 85020A/B
Directional Bridge, this manual applies directly to all
instruments manufactured before the print date, and therefore no
change information is given here. Refer to INSTRUMENTS COVERED BY
MANUAL in Section I for additional information about Manual
Changes supplements and changes keved to specific serial numbers.
7-1/7-2
Model 85020A/B Service
SECTION VIII
SERVICE
8-1. INTRODUCTION
8-2. This section provides instructions for troubleshooting and
repair of the 85020A/B Directional Bridge.
8-3. CAUTION NOTES
8-4. The CAUTION sian denotes a hazard to the instrument. It
calls attention to an operating, maintenance, or repair procedure
which, if not correctly performed or adhered to, could result in
damage to or destruction of vart or all of the instrument. Do not
proceed bevond a CAUTION sign until the indicated conditions are
fully understood and met.
8-5. THEORY OF OPERATION
8-6. The operation of the 85020A/B is described to assist with
troubleshooting procedures. Schematic diagrams are suoplied for
the Al directional bridge circuit and the A2 preamplifier,
together with a component locations diagram for the A2
preamplifier assembly.
8-7. TROUBLESHOOTING
8-8. Troubleshooting the 850204/8 involves performing the
Operator's Check and the Performance Tests, If a problem persists,
refer to TROUBLESHOOTING PROCEDURES later in this section. The
troubleshooting procedures are designed to help the technician
isolate a problem to the defective component. A troubleshooting
flow diagram is provided in Figure 8-4.
8-9. RECOMMENDED TEST EQUIPMENT
8-10. Eguivment recommended to test and maintain the instrument
is listed in Section I, General Information. If the eguipment
listed is not available, equipment that meets the critical
specifications listed may be substituted,
Service Model 85020A/B
8-11. REPAIR AND REPLACEMENT
8-12. The following procedures are described:
Power cable replacement
Preamplifier assembly replacement
Replacement of the bridge microcircuit assembly
Preamplifier adjustment following replacement of the bridge
microcircuit assembly
Model 85020A/B Service
— THEORY OF OPERATION
Al Bridge Circuit
RF INPUT ©
PORT Ji
*750 IN 850208
4750) 500 „$' "9 500 750”
BALANCE ARM
AA
800
© TEST PORT J2
REFERENCE
TERMINATION
500 (750 10000Е
„а 1000pF
fe —
10000 100002
voor TO PREAMP
Pl
1 Orel ASSEMBLY
т т OG0pF |
Figure 8-1. Al Bridge Circuit Schematic Diagram
The 85020A/B Directional Bridae is a broadband device used to
measure return loss. The voltage across the balance arm (see
Figure 8-1) is proportional to the return loss of the device under
test. Placing a diode across the balance arm enables the
conversion of the microwave voltage to a 27 kHz square wave whose
amplitude is proportional to the return loss. The 1000-ohm
isolation resistors and the 1000-pF capacitors serve to isolate
the balanced detector from the Network Analyzer. This buffers the
output, reducing the imbalance across the center arm created by
the ground on one side of the output and the preamplifier
connection on the other.
Two parameters which define the quality of the bridge are
Directivity and Source Match.
Directivity is a measure of the residual error in the bridge. When
the test port is terminated in a perfect matched-impedance load,
the detector diode should read zero. However, because of
non-symmetry due to resistor imbalances, component placement,
8-3
Service Model 85020A/B
coaxial imbalances, etc., a voltage will be output to the Network
Analyzer. The ratio of the detected voltage with a perfect
matched-impedance load to the detected voltage with a short is the
directivity.
Source Match is a measure of the impedance looking into the test
port. Tt is usuallv given as SWR. It is a function of the bridge
element values, and is independent of directivity: that is, a
bridge with very qood directivitv could have poor source match.
A2 Preamplifier Circuit
The output of the bridge circuit is a low level 27 kHz signal,
Before it is input to the Network Analvzer, it must be amplified,
This is the function of the preamovlifier. Figure 8-3 is a
schematic diagram of the preamplifier A2, and Figure 8-2 is a
preamplifier component locations diaaram.
The functional center of the »reamplifier circuit is a low-noise
operational amplifier Ul wired in the non-inverting configuration,
The gain of the preamplifier is controlled bv R3 and RA (Gain =
1+R4/R3). The gain may he varied from 1 to apnroximately 17. R4 is
the GAIN adjustment and comvensates for the sensitivity of the
bridge diode.
The input impedance adjustment R2 (Z) compensates for the internal
resistance of the diode. The input impedance may be varied from
100 ohms to approximately 10k ohms.
The 100 ohm resistor R5 and the 1000 pF canacitor C3 forma
decoupling network which keeps RF signals from the invut of the
operational amplifier.
Rl is placed in series with the non-inverting input of the
operational amplifier Ul to prevent the input sional from shorting
to ground through the 10k potentiometer R2.
8-4
Model 85020A/B Service
WHITE/
BLACK
——E]l 1.1 € O e
о O
WHITE/ a UT яч © Ш
in EJ
OD —
= [raie TP
e о |
А-2234-45
Figure 8-2. А2 Preamplifier Assembly Component Locations
у
оС | 0-4
|
: — | o
(tm | Og o o
+ 62
3.3
C1 |
3.3
€
eH — —— o + |
сз |
1
V | DET 1000FP 1
INPUT à Ç | 51.1 3 14 7
O Y EY TE > 6
RE + A
100 > OUTPUT
В? |
10K y e TP1 |
na à R4 |
3160 Ÿ 50K |
5 E.
Figure 8-3. AZ Preamplifier Schematic Diagram
8-5
Service Model 85020A/B
Step Test Recommended Action
1 Cable Continuity p— Fail Replace Cable Wi
Pass
o Y
2 Input and ‘ Install
| Test Port rm Fail Replacement
Resistance mes Bridge Circuit
Pass
У
3 Preamplifier Fail Repair or Replace
| ms Preamplifier
Le] Pass
Y Y
Reconnect
85020A/B
Bridge and
Retest
85020A/B
Bridge
is repaired nome
and ready et Fail
for use. сен
Y
Return to
Step 1 of
this
Figure.
8-6
Figure 8-4. Troubleshooting Flow Diagram
Model 85020A/B Service
TROUBLESHOOTING PROCEDURES
If a oroblem persists following the Operator's Check in Section
IIT and the Performance Tests in Section IV, perform the
troubleshooting procedures outlined helow to isolate the cause and
correct the problem. Refer to the troubleshooting flow diagram in
Figure 8-4, Instructions for repair or replacement of defective
components are provided following the troubleshooting procedures.
| CAUTION }
The 85020A/B Directional Bridges contain
microcircuits that are highly sensitive to
electrostatic discharge (ESD). For service
purposes, a work station equipped with an
anti-static surface must be used and a
grounded wrist strap must be worn, Never
touch the center contacts of the
connectors with the fingers. Ground the
leads of the digital multimeter by
touching them to the grounded instrument
chassis before making measurements.
Internal Access
To obtain access to the interior of the 85020A/B for
troubleshooting and repair purposes, proceed as follows:
l. Remove the two screws holding the port cover (the test port
end plate).
2, Remove the port cover.
3. Slide the top dress cover out of the grey bridge housing. The
interior of the 85020A/B is now accessible,
Cable Continuity Check
1. Use a digital multimeter (DMM) to check the continuity of
power cable WI from the connector pins to the wire connections
inside the bridge housing. Table 8-1 lists the WI connector
pins and the corresponding wires.
2. If there are discontinuities in any of the wires replace cable
Wl, following the instructions outlined under Repair and
Replacement Procedures. Repeat the performance tests in
Section IV.
8-7
Service Model 85020A/ B
Table 8-1. Wires in Power Cable Wi
CONNECTOR PIN CORRESPONDING WIRE
1 White (coax center conductor)
2 Shield {coax outer conductor)
3 No connection
4 Violet
5 Red
Input Port and Test Port Resistance Checks
1. Ground the leads of the DMM hy touching them to the grounded
instrument chassis.
2. Measure the resistance from the center contact of input vort
connector Jl to the center contact of test nort connector J2.
In the 85020A, the resistance should be 33 ohms +2 ohms. Tn
the 85020B, the resistance should be 46 ohms +2 ohms.
3. Measure the resistance from the center contact of input
connector Jl to signal ground (the black/white wire connected
to the microcircuit housing). In the 85020A, the resistance
should be 83 ohms +2 ohms. Tn the 85020B, the resistance
should be 118 ohms +2 ohms.
4. Measure the resistance from the center contact of test port
connector J2 to signal ground. In the 85020A, the resistance
should be 83 ohms +2 ohms. Tn the 85020B, the resistance
should be 118 ohms +2 ohms.
5. If the above resistance measurements are not correct, the
bridge microcircuit assemblv Bl is defective and must be
replaced.
| CAUTION §
!
DO not attempt to disassemble or repair
the bridge microcircuit assembly Al,
including connectors J1 and J2 and
reference termination AT1. Do not remove
or loosen any screws on this assembly. Апу
attempt to perform any disassembly or
repair not clearly outlined in this manual
will automatically void the warranty.
The bridge microcircuit assembly, including input and test
8-8
Model 85020A/B
Service
port connectors and the reference termination, mav be replaced
on an exchange basis, thus affording a considerable cost
savings. Refer to Section VI, Replaceable Parts, of this
manual for the vart numbers for new and exchange assemblies,
The procedures for revlacement of the microcircuit and
subseguent adjustment of the preamplifier are described below
under Repalr and Replacement Procedures.
Preamplifier Check
1.
10.
Disconnect the power cable Wl from the Network Analyzer.
Unsolder the white/red and white/black wires from the pins on
the Al bridge assembly.
Measure the resistance from the input (white/red wire) to
signal ground (white/black wire). The resistance should vary
from 100 ohms to 10,000 ohms as A2R2 is adjusted through its
range.
Measure the output resistance, from TP] to signal ground. The
resistance should vary from 3k ohms to 53k ohms as A2R4 is
adjusted through its range.
Connect the 8756A/8755C MODULATOR DRIVE output center
conductor through a 1 Megohm resistor to the 85020A/R A2
preamplifier input (white/red wire). Connect the 8756A/8755C
MODULATOR DRIVE output outer conductor to the 85020А/В А2
preamplifier signal around (white/black wire}.
Connect the 85020A/B power cable Wi to the A input of the
8756A/8755C.
Set the 8756A/8755C channel 1 to displav the power level of
input A.
Erase all memories from anv storage device used with the
display.
Turn A2R2 and A2R4 fully counterclockwise, The 8756A/8755C
should display a noise floor of about -50dBm.
Turn A2R2 fully clockwise. Adjust A2R4 from one end of its
range to the other. The display should change by about 204b,
If the preamplifier fails to meet any of the above
conditions, replace the defective components. Repeat the
performance tests in Section IV.
8-9
Service Model 85020A/B
REPAIR AND REPLACEMENT PROCEDURES
Power Cable Replacement
Preamplifier Assembly Replacement
BLACK
WHITE
VIOLET
COVERED BARE WIRE
TO SOLDER LUG
ON BRIDGE
Figure 6-5. Cable to Preamplifier Wiring Diagram
To replace the power cable Wl or the preamplifier assembly AZ,
proceed as follows:
1. Remove the two screws holding the port cover (test port end
plate), and remove the port cover.
2. Slide the top dress cover out of the Bridae frame.
3. Unsolder the wires connected to the power cable/preamplifier
assembly, |
4. To rewire the power cable, refer to Figure 8-5, Cable to
Preamplifier Wiring Diagram,
5. To reconnect the preamplifier A2 to the bridge microcircuit
Al, solder the white/black wire to the pad at the top of the
preamplifier (the side furthest from the microcircuit). Solder
the white/red wire to the middle pad on the preamplifier.
Model 85020A/B
— Service
Replacement of the Al Bridge Microcircuit Assembly
The bridge microcircuit assembly Al, illustrated in Fiqure 8-6,
includes input port connector Jl and test port connector J2 and
reference termination ATI. This assembly may be revlaced on an
exchange basis at considerable cost savings. Refer to Section VI
of this manual for the part numbers for new and exchange
assemblies, Since the instrument serial number label must be
removed for access to the hridge assemhlv, each renlacement bridae
assembly is supplied with a replacement blank serial number label.
The instrument serial number should he typed on this label, which
is then applied to the instrument following bridge assembly
replacement,
e Ei TE a me ha
a a mm A ah i ale gl om
The 85020A/B Directional Bridge
microcircuit is highly sensitive to
electrostatic discharge (ESD). For service
purposes, a work station equipped with an
anti-static surface must be used and a
grounded wrist strap must be worn. Never
touch the center contacts of the
connectors with the fingers.
} CAUTION $
aah a A a a
Do not attempt to disassemble or repair
the bridge microcircuit assembly Al,
including connectors Jl and J2 and
reference termination AT1. Do not remove
or loosen any screws on this assembiy. Any
attempt to perform any disassembly or
repair not clearly outlined in this
section will automaticallv void the
warranty.
To remove the bridge microcircuit assembly Al, proceed as follows:
1. Type the serial number of the 85020A/B Directional Bridge on
the rear-panel label sunplied with the new or replacement
bridge assembly.
2. Remove the two screws holding the port cover (the test port
end plate).
3. Remove the port cover.
4. Slide the top dress cover out of the grev 85020A/B Bridge
frame,
8-11
Service Mode! 850204/B
>. Unsolder the two white/black wires and the white/red wire from
the solder lug and connector vins on the Al bridge housing.
6. Turn over the instrument. Remove the printed mylar serial
number label and the aluminum foil cover from the back of the
extruded frame. Four screws will be exposed.
7. Remove the four screws from the back of the instrument.
8. Remove the bridge microcircuit from the extruded frame by
tilting it up to clear the vreamvlifier assembly. Take care
not to lose the stainless steel spacer under the microcircuit
assembly,
—
PIN PIN ) |
7 2 i
ATR
=
\
WHITE/ WHITE/
BLACK RED
Figure 8-6. Al Bridge Microcircuit Assembly
To install the renlacement bridge assembly, proceed as follows:
1. Install the spacer over the screw holes and the bridge
assembly in the instrument frame over the svacer.
2. Replace the four screws.
3. Remove the protective backing from the aluminum foil and avplvy
it to the back of the frame.
8-12
Model 85020A/B Service
4. Remove the protective backina from the new serial number label
and anplv it over the foil backing.
5. Solder the preamplifier wires back into place. Solder the
white/red wire to pin 2 on the bridge housina (see Figure
8-6). Solder the white/black wires to pin 1 and the bottom of
the solder lug. Be sure that pin 1 and the solder lug are
wired together,
6. Slide the dress cover back into place.
7. Replace the vort cover and its screws.
8. Perform the preamplifier adjustment procedure outlined below,
8-13
Service Model 85020A/B
Preamplifier Adjustment Following Replacement of the Bridge
Microcircuit
Normally no adjustments are required on the 85020A/B Directional
Bridges. However, if the internal bridge microcircuit is renlaced,
the adjustment described here should be performed to compensate
the preamplifier for the individual diode characteristics.
NOTE
Allow the equipment to warm up for 30
minutes before performing this adjustment.
Description
The input impedance and gain of the preamplifier assembly are
adjusted alternately with the Z and GAIN potentiometers, while the
attenuator tracking is observed on the Network Analyzer display.
POS Z SWEEP
SWEEP POS 7 BLANK y iN
QUEAN $ 4 BLANK
SWEEP Е NETWORK
DSCILLATOR | a ena ANALYZER
BRIDGE
Figure 8-7. Preamplifier Assembly Adjustment Setup
Equipment
Scalar Network Analyzer . . e. o. e e 4 + 4 + © HP 8756A
Sweep Oscillator о в о в о в ев ое чье НР 8350A/B
kE Plug-In © a a т > * a a + # a HP 83522A/83525A/B
Step Attenuator . +. >. HP 8495A Opt. 001 (Calibrated)
>0-Ohm to 75-0Ohm Minimum Loss Pad
(85020B only) . . . . . + « + 4 « « « « + . HP 11852A
8-14
Model 85020A/B | Service
Procedure
1. Remove the silicone rubber seal from the two potentiometers to
gain access to the screwdriver slots.
2. Connect the equipment as shown in Fiqure 8-7. If the
Directional Bridge is an 85020B, connect the Model 11852A
50-ohm to 75-ohm minimum loss pad between the step attenuator
and the input port of the Directional Bridge. Allow the
equipment to warm up for 30 minutes,
3. On the 8350A/B, press [INSTR PRESET] [SHIFT] [CW] [2] [01 [91
[MHz] to set the signal to swept CW. Press [SWEEP TIME] [1]
[5] [0] [ms]. Press [LIT MOD] to turn on squarewave modulation.
4, Set the 8756A as follows:
CHANNEL 2 = = a = + + * + + + = - OFF
CHANNEL 1 + + + + +4 e e se e e e » +» ON
MEAS PWR + + + + + + + + + > + > a A
REF LEVEL + * + © + + + + в в a = » 0
SCALE + + + + + a e e + + 6 10 dB/DIV
2. Set the attenuator to 0 dB. Set the REFERENCE POSITION near
the top of the screen. Adjust the REFERENCE LFVEL to coincide
with the REFERENCE POSITION. (The reference level should be 0
dBm +2 4B with an input signal of +13 dBm, for the 85020A. For
the 850208, the reference level should be ~6 dBm +2 dB.)
6. Set the attenuator to 20 dB. On the 85020A/B, adjust A2R2 (Z)
to position the trace on the graticule line 20 dB below the
reference.
7. Set the attenuator to 0 dB. On the 85020A/B, adjust A2R4
(GAIN) to reposition the trace at the reference.
8. Iterate between the last two steps until the trace is on the
graticule line +0.5 dB at both steps.
9. Step the attenuator in 10-dB steps to 40 dB, Check that the
traces at all steps are spaced at 10 dB intervals +0.5 dB on
the display. If the trace is not tracking at 10~dB intervals,
iterate between 0 dB and 40 dB of attenuation while
compensating the GAIN and 7 adjustments as described above.
8-15
Service Model 85020A/B
А2В2 (7) A2R4 CGAIN?
WHITE/ \ /
BLACK * /
=] e
О O
WHITE/ С UT RH O ||
RED R2 + O E
13
|] © GO O odcrifa 169 С
A-2234-45 ; |
Figure 8-5. Preamplifier Assembly Adjustment Locations
8-16
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Woluwedal
B- 1264) BRUSSELS
Tel: (32) 7867-32-00
Telex: 23-494 paloben bu
ALHCMCSEMPF
BRAZH,
Hewlett-Packard de Brasil Le...
Lida,
Alameda Rio Negro, TAC
ALPRAMILLE S6d6) Baruer SP
Tei 421-1211
Telex: 611 T3872 HPBER-BA
Cable: HEWPACK Sao Paule
ACH CM CS EMS
Howl Packart de Bras tel.
ida.
Avenida Epstacio Pessos, 4664
2247 PIG DE JANEIRO-A3
Tel. 266-0277
Telex; 2-2 1005 dPRR-HA
Cable: HEWPACK Rix de Janes
ACH CME MSP!
CANADA
Alberta
Hewiell-Packard (Canada) LI
210, 7226 Fisher Sireel SE.
CALCARY, Alorta T2H THE
Tel: 40 53-27%
ACH OME MEP"
Hewial-Parkarg ¡Canacial Lie.
1857204: 16896 Street
EDMONTON, Alberta THM ITS
Tal: (403) 452-3670
ACH OM CS E MSP
Britlsh Columbia
Hawich Packard [Canada Lid
10691 Shelozidge Way
RICHMOND,
British Colarbia YEX 267
Tel: 04) 770-2277
Télex: 510-922-5058
ACHCOMOSEMEF"
Manitoba
Hewlett-Packard (Canada) Lid.
380-550 Century Sires
WINNIPEG, Mania ESH OY E
Tel: (264) 788-6701
ACH.CME MSP"
Nove Scotia
Hewlett-Packard (Canada) 16)
6.0 Bon 931
SUG Winch Road
DARTMOUTH, Nova Seofg B2T 375
Tel: (02; 489-7820
Telex: 01931470
CHEM TSE" MS а"
Cntarlo
Hewtet-Fachard ¡Canada List.
552 Newbokt SHeet
LOMBON Ontario NSÉ 255
Tel: (510 696-3181
AZHOME" NSP"
Hewlett-Packard {Canadas Lig
E877 Goreway Drive
MISSISSAGGA, Ontario $4Y 1M8
Tel: 1416) 678-3430
Telex: 06903646
ACH.EMCS.E MP
Hewlett-Packard (Canada} Et.
2870 Queensview CH.
OTTAWK, Oriarie K2B 85 1
tek {653} 420-6463
ACHOMCS E MOP"
Quebac
Hewlett-Packard {Canada} Lid,
17500 South Service Road
Trans-Canada Highway
KIRKLAND, Quebec HJ ВМ,
Tel: 518) 637-4239
Telex: JRE2 162 ¢
ASH EM CS EMEP
CHILE
Jorge Calcagni y Cia. Lida.
SANTUGO FF
Те! 222-0522
Telex. Public Booth (G01
ACMEH
CHINA, Paople’s Republic
of
Chita Hewlett-Packard Hep, Office
PU Box 418
1А Lane & Luchang Si,
Bait Bef, Xsan (istrict
SÉSARE
Tal 33-1947. 23-7426
Telex: 22601 CTSHP CN
Cale: 1920
ACHEMOSER
Arranged alphabetically by country
COLOMEBEA
dnsimamentación
AH. A Langebesk & Kier 5A.
Corera 7 No. 48-75
Apartado Aereo 6287
BOGOTA, TE
TEL 2670077
Toles: 44400 WET CO
Cane: AARIS Bogota
ACH EMP
COSTA RICA
Cleniifica Cosfgrricense 54.
Avenida 2 Сей 5
Sar Pedo de Montes de Des
Apartado 10150
SAN JOSE
Tel 24-34-20 24-08-18
Talar: 2367 GALGUA
CHE A
CYPRUS
Tetérexa Lid.
PO Вох 4808
MAC Srassings Avenpe
MCs
Tel 52598
Tees ZEW fovidocy
EMF
CZECHOSLOVAKIA
Hewlett-Packard
Oechodrs Zasiupételstyt v CSSR
Post. achranka 27
CS-F1A 61 PRAHA 011
Tel 66-256
Telex: 129353 HE
DENMARK
Hewlett-Packard V5
Datavaj 52
ВК - 2460 Mrd
Tet 102) 81-66-40
Tales 37400 hpas de
ACH CMDS E MS P
Heviet-Fackard AS
Navervét *
EK-B600 SILKESORG
Te! (06) 62-71-66
Teen: 37409 hpas dk
CHCME
ECUADOR
CEDE Can. Cid.
Avenida Eloy Añaro 1749
Casta Ed23 CO
ТО
Tal: 450-975, 243.052
Tejex 2548 CYEDE EC
ALMEF
EGYPT
Hitethabons Endriféering ASSOciqies
24 Hossear Hegari Sireef
Hast -el Aly
CARO
Tal 21-629
Taser 33830
CHCSEM
EL SALVADOR
PESA de El Salvador SA.
25 Avena Norte 12716
SAN SALVADOR
Tel 26-6858, 26-6868
feiex Public Booth 20107
ACHOMCGEF
FINLAND
HewleH-Packard Oy
Revonbuente ?
SF D210 £5000 HO
Tel. 190) 355-6211
Telex: 121563 hewpga sf
ACHOMCSEMSP
FRANCE
Hewlett-Packard France
Él. Mercure E
Sue Beret
F-13783 Les Mikes Cedex
AIX-ER-PROYERCE
Tel 421 69-41-09
Telex: 4107 705
ACH.COME MSP
Hewlell-Fackard France
Bureau de Vente de Lyon
Chemin des Moules -
Bade Postale 187
F-68130 ECULEY Cédes
Tel: 178) 15-81-25
Telex: 310617F
ACH. CM C5 £ MF
Hewlel-Packard France
immeuble France Evry
Tin Lotraine
Boglevard de Frgñce
F-91035 EVRY Cédey
Tok (B60) 77-96-60
Telex: 6023156
EME
Hewlett-Packard France
Centre d'Atfaire Paris-Mord
Béfment Ampère 5 Élage
Aue de la Commune de Paris
Boite Postale 260
F-53553 LÉ BLANC НЕСК,
Fel: 01) 9865-44-52
Tebow; 213032F
CHEM OS EMS
Hewieit-Fackard France
Le i
Avenue du Presiden) JF Kenedy
F-23700 MERINAC
Tel: 56) 34-00-84
Telex; 5501056
CHÔME ME
Hewiet-Packard France
Zona Mausinebe de Courlaboesd
Averdé des Tropigues
#0 1947 Les Lis Códex On.
Tes: 163 907-7825
Tete: AOOGREF
ACHOMOSEMP.P
Hevéell-Packard France
2 Mec de la Bouegoncue
F-55306) RENNES
Tel: (50 51-42-44
Teles: 7409157
CHE E. MEP"
Hewlell-Packard France
A Aue Themas Mann
Вой Postale 56
F-E7200 STRASBOURG
Tel: (88; 28-56-46
Telex: 600 14 17
CHEME MSF
Hewbet-Packard France
20 Cherain de la Cépéère
F-51081 TOULOUSE Cédes
Tel 61 40-11-17
Telex: 531839
ACHEMCO,E FP"
Hewlett-Packard France
mente Pércentre
Rue Yan Gogh
F BUES0 VILLEREUYE DASD
Feb fé 01.4 26
Telex: 1501746
CH, CREE Ws 7°
GERMAN FEDERAL
REPUBLIC
Hewiell-Packard GmbH
techniscites Biko Вели)
Kpithstrasse 2.4
E- 1000 MERLIN 30
Tel (0307 24-90-86
tex. (18 3406 hpbin d
ALH OLE REP XY
Hewlett-Packard GrnbiH
Yechnisches Blin Bibingen
Herfenberger Strasse 116
El- 7030 BOBLINGEN
ей (ОТО 5671
Тен Ка or
A CHOM.CS E MPF
Hewlet!-Pacxard Smbi
Technisches Bio Dussekion
Emarnatiqutze-Slranté €
[20080 DUSSELDORF
Tel: {02 11) 5071-1
Telex; DAS86 533 hodd d
ACHOMCS E MSP
Неме!-Раскаго (тн
veririebsrentrale Frankfurt
Berner Sirasse 714
Pastigoh 56th 196
C-500? FRANKFURT 56
Tel: 10611) 50-041
Telex: (4 13249 hpHm d
ACHEOMCSEMPP
Hewlelt-Packard GrrèH
Techrisches Blko Hamburg
Kapstadt 5
D-20000 RAMBERG 63
Te M0 3804-1
Telex 021 63 932 hphh dl
ALDH CM LSE MSF
Hewlett-Packard GrabH
Fechrisches Blo Bano
Am Grossmarkt 6
C-5000 HANNOVER 91
Tab 10517) 46-65-01
Feber [192 3256
ACH CME MSF
Hewietb Packard GmbE
Techmsches Bia Mannhein:
Rosslaver Weg 2-4
B-E80C MANKHEIM
Ter 10623) 70050
Telex: 0462 105
ALE
Hewlef Packard GmbH
Tectenaches Billo Mew dim
Messerachmilisrasce 7
T-78 10 NEU ELA
Tal GF3:.70241
Telex: 07 178 6 He UE MI[
ACE"
Hewitll-Packats GmiH
Technisches Biro Noraserg
Neumeyerstrasse PO
18500) HUANBERG
Tel: 95152 20 ATT
Telex: (625 B60
THOME M3 7
Hewielt-Packard GrebH
Technisches Büro Miinchen
Escherstasse $
G-BOSE TALFKIRCHEN
Tal: #085} 5137-4
Telex; (524965
ACHOMEME#
GREAT BRITAIN
Hewlett-Packard LE.
Trafalgar House
Kavigatioé Boer
ALTRINCHAM
Chesire WA14 INH
Tel: {081} 928.5422
Telex: 668066
ADH CSE M
Hewlett-Packard Lid.
Firewood}
Mme Mise Rida
EASTHAMPSTEAD
Wokingham
Berkshre. 2661 E Li
Tel: 3445 3500
Telex: B4-68-05
CHORE
Hewlett-Packard Lu
Fourer House
257-263 High Sires!
LONDON COLNEY
Herts., AEZ 1HA, Si Albans
Tel: (3727) 25460
Telex: 18562716
CHOSE
Hevéelt-Packard Lie
Tradax Howse, 51. Mary's Walk
MAIENNEAD
Bekshire, SL6 157
Tel: 40628; 38165
CHISEF
Hewlett-Packard Ei,
Quadrangie
106-118 Stahon Road
REDHILL, Sterey
Tel: 0727: 60655
Telex: 9472214 СНОВ
HowietF-Packared L106.
King Skeet Lane
WINKERSH, Wokingham
Berkshire BG1Y BAR
Tek 0734; 764774
Télex: B4717H
ALHEM
GREECE
Rostas Karaynus ZA.
E Caray Steel
ATHERS 135
Tel: 32-30-3063, 32.37.37
Telex: 21 59 62 RKAR GR
A, CHL CHGS E REP
GUATEMALA
APESA
Avenida Refonta T48, Zona Y
GUATEMALA
Teh 316627 318786
Telex: 4 197 TEL MO GU
ACHOM CS EMP
HONG KONG
Hewlett-Packard Hong Kong, Eid.
15.0. Bnx 795
SAR Finor, Sun Ново Кар Селе
30 Найкия Неве
HONG KONG
Tel, 5-A3252F1
Telec 66678 HEMPA HY
Calle HP ASIA ETD Hong Kong
ECHESP
NEHA
Bie Star Lid
Sari Compler Y Ficor
24 Residency Ad.
BANGALORE 560 025
Tal 55660
teles" (545-430
Calle ÉLUESTAR
ACHEMCEE
Hive Star Ltd.
#1472 Wir Servarkar Marg
Praha
BOMBA Y SOX des
fet 427-5155
Telex: 671-4593
Catre: PROSTELUE
ALHOMOS EM
Bie Siar Lig
Bhardar: House, PVEM Fioors
Si Menu Puce
HEWDELAN T10 Cad
Тег 505547
Telea: (331.2483
Cable: EL LESTAR
ACHCMCSE
Blue Star Lit.
2-2-4771 108 Holarm Hd.
SECUNDERABAS 500 (3
ter 72057
Toten: 0185-4556
Cable: 1 UEFROST
AL
Blue Séar LA
TC 7603 Poorine
Adra
HEVARORUN E95 073
Те: 65799
Тейкк: ОВНА. 258
Саб BLUESTAR
F
INDONESIA
BEATE Indonesia 2 7.
Wisma Anfara Eldig.. 171 foar
JARERTA
AACHEN
BERCA indonesia PT.
EL, Box 1745807
À. Kutei No. 73
SURABAHA
Tal 68 72
Telex: 31166 BERSAL SE
Calle: BERSAL SURARBAYA
AT EMF
IRELAND
Hewlett-Packard Feland Lid.
Kasia: House
Clanwilliam Cold
Lower Moun Street
BUBUIN ©, Ere
Tel: 11} 50 88 20
Falax 30439
ACHEM IS EMP
ISRAEL
Eectromes Engineering Division
Motoras Israel Ltd,
16 Kremenetski Street
£0. Bos 25018
TEL-AVIV 67000
Fal: 3330573
Telex" 33569 Mati E
Cable: BASTEL TerAvv
ALHCM OS EHF
ITALY
Hewlett-Packard lalana S.A,
Va Mastin Luther King. 38/111
140137 BOLOGNA
Tet: (051) 402094
Telex: 511830
CH OME MS
SUPPORT OFFICES
Hewiel-Packard taba SpA.
Via E Di visiorio Y
120067 CERNUSCO SU MAVIGER
Tal: 12 03697
Telex: 334632
ACHEMESEMEP
Hevdell-Packard Hahans 5.p 4.
Yi Neve san Rocco A
Capodimonte, BZA
SO EN NAPLES
Tet (081) T4 13644
Taiex: 719698
ACHEME
Hewlel-Fackard Hakena Sp A.
Vigle G. Mödugno 33
116156 CENCYA PEGEF
Tef: (010) 68-35-07
Le
Hewilel-Packarg itatane 5.7.6.
Wa Tegzza 14
135 100 FABDYA
Tar 1049) 650608
Telex: 430315
AGH DM EMS
Hewiel-Packarg lakata В.А.
Vale E Pavese 140
IIA AMA
Tel: (06) 54531
Tee: 65051
ACH OSE MER
Hewleit Packard lalana 5.5.A.
Corso Svizzera, 184
110145 TOREO
Tel: (Di1y 74 4044
Telex: 221079
THOME
JAPAN
ATSUGI, Kanataws 743
Tél: (G462) 28-0851
CELE
Yokogawa-Heviell-Patkard Est.
Sannomiya Catichi Seimei Bid
69 Kyo -machi, Chao
KOBE, 656
Tel. (G78; 392.4791
Yañogawa-Hewiell-Packard Ed.
Karnagaya Asahi Yass Big 4F
34 Chome Taba
FUMAGAYA, Saitama 360
Tel: 85) 24-6563
CHIME
Yokogawa -Hewiefl- Packard Bid.
Asahi Shar Dehichi Bldg. 2F
4-7 Hanabista-cho
KEMAMETO-56F860
Tel: (0963) 54.7311
CHE
Yok ogawa-Hewell-Packard #49.
Shin Kyoto Center Big. SF
674 Siokop-cho
Nishiuhigashé, Karasuma
Siokaj-dor, Shimogyo- Ku
KYOTO 500
Tek 075-243-0871
СНЕ
Yok orgawa-Hewdet-Pagkant Lig
Hilo Mitsui Building
PATA SENO
MITO, Ineragi 370
Tes (0702) 251476
CECME
Yokogewa Hewitt Packard Lig.
Sumitomo Seimei Nagoya Skig.
11-2 Shimrsasama- cho
№канита-хы
MAGOTE, Aichi 45€
Tel (552) 571-5471
CHOHCSE MS
Yokogawa-Hewéeil-Fackard Lid.
Chuo Eldg.… Ath Fioor
5-4-20 Mshirakalima
Yadogawa-ke
OSALA, 532
Tel: (06) 304-6023
Telex: YHPCSA 523-3524
ACF CM CSE MEP”
Yon ogawa-Hewiet Packard Lid.
27-18, tchome
Yabo
BAGAMIHARA-GH PREF. 224
Tel: 52.591311
Telex: В9 12
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Yokogaws Hewlett-Packard 148.
Shea Der-icht Same: 67
2-7-1, Highi Shinjuku
Shingo ki, TOKYE 16)
Tel: 03-245-46 4 1-5
CHE
Yokeqawa Hewiet- Packard Lid.
3-29-21 Takaido-Higash:
Suginami-xy TOKYO 15
Tel: (3) 337-6111
Telex: 232-2024 YHPTOR
ACH UM CS EMFP"
Yio og ed-Hewlel-Fack ard £1.
Taoyudaseimes Yokohama
Nishicuchi Bids.
3.304 Tuizpya-cha
Kanagawa-Kil
YOKOHAMA, Kanagawa, 227
Feb: 1055) 510-1052
CH CME
JORDAN
Houasher Coysins Company
PO fox 1387
AGAN
Tel: 24507, 38057
Telex: 2 56 SABE JO
CHEMF
KENYA
ALCOM Lio, me.
Ciy House, Wabera Sweet
PO.Bor 30635
AAC
tar 231055
Telex. 22635
EM
KOREA
Бата Electromoes Comper
division
7E-561 Vak sa Dong
Kangnam-He
LLO Box 2775
SE
fei: 555. 7555, 555.5447
Telex: K27364 SAMSAN
ACHOMES EME
KUWAIT
ACKhaloya Tradimy A Contacting
EC. Bar 830 Safal
ACT
Tar 44010, 41. 1725
Fees: 2451 Arceg ki
CHEM
LUXEMBOURG
fewipll- Packard Bekgiam 5 ANY.
Blvd de la Woluwe, 190
Wobei
B- 1200 BRUSSELS
Tei 02) FE2-32-00
Téiex: 23-494 paichen Gru
ACHEMÉSEMEP
MALAYSIA
Hewlet-Pachad Sales (Malaysia
Bi.
151 Floor, Barquman British
American
Juan Semardan, Bamansasg Heighis
KUALA LUMPUR 21-05
Tel: 943622
Тек: МАЗ ЗО 3:
ACHE MB
Prote Engineering
LOTA Salah Acad
POBox 1977
Kuching, SAREWAK
Ter 53544
Talos: Ma 70504 PROMAL
Caba: PROTELENG
ALM
MEXICO
Hewlett-Packard Mexicana, 5.4. de
Gy
Av. Fertesico Sur No, 6501
Tepepan, Xochimico 165020
MEXICO CITY
Tal: (595) 676-4600
Telex CE7.14-567
ACHOSEMEP
MOROCCO
Doibeaus
81 rue Karaioh
CASABLANCA
Tab 304 1-82, 3068.38
rales: 23051, PP927
É
NETHERLANDS
Hewlett-Packard Nederiand BY.
Van Heuven Goadhartigae 121
ML 155140 AMSTÉEVEER
FE Boo BGT
HI $180 AR AbSTELVÉER
Ta: (20) 47-20-21
Telex: 3 216
ACKOMCSE MPP
NEW ZEALAND
Hewlett-Packard (4.7) Eid.
165 Manukau Romd
£0. fox 76-188
Epsom, AHCXLANE
Tel: GET-158
Cable: HEWPACK Auckland
CHOMÉF"
Hpwiell-Fackard 62} Ed.
4.17 Crack shane Sires)
Kilwre, WELLINGTON 4
Р.О Вох 9443
Couriensy Place, WELUMETON y
Toi AFT. 194
Cable: HEWPACK welinglon
CHOUEF
NORWAY
Hewiert-Packard Norge 4/5
Foke Bemadottesvet 50
7.0. Box 3558
N-50373 FILUMGSRALEN (BERGEN)
Tar. 105) 16-55-40)
Telex T6621 horas г.
CHIME
Hewie-Packard Norge AS
Jesterndaien 18
PO. Box 34
H- 1345 QESTER'AS
Ter 107) 17-11-80
Telex: 1662 t hpnas e
AT CME MSP
PAKISTAN
Mstiko 4 Company Lid
1-8, Street 47
Sapter F841
IELAMAESD
Tel. 26875
Cable FEMUS Fatih
AEM
Mustke & Company Lid,
Cusmean Chambers
ADAH: Haroon Road
KARACHI O
Tel. 31 1027, 512827
Telex: PRIS MUSK РК
Cabe: COSPERA TOR Karachi
AEMP"
PANAMA
Fxecránico Balbos, 5.4.
Cale Semin! | wis, Ed Ag
Apartado $824
PARAS
Yor 64-2700
Telex: F458 ELECTRON PG
ACHEMP
PERU
Che Electro Hédica SA.
Los Fismencos 145, San karo
Casio 103)
LAMA 1
Tel 41-4325, 41.3703
Telex: Fob. Boon 25306
AUMEMP
PHILIPPINES
The Online Advanced Systems
Corporation
Aico Howse, Amorsolo Cor. Harrera
Sirest
Legaspi Vilage, Makat
FO Ber 1510
Miro HER A
Tel H5-35-81, 85-94-87, HH.27.21
Telex: 3274 CNCINE
A CHOSE 4
POLAND
Bure formas Techmezne
Hewler-Packard
Ы Sido EP
PLIG-350 WARET4 WA
Ter 39.58.62, 38.87.43
Vela: 812453 hepa pi
PORTUGAL
Telecira-Empresa técnica de
Emijprientos Eléciiens $ 8.6.
Hue Rodrigo de Fonseca 103
PO Bor 2831
É-LISHOW 7
Tel [TE 68-5077
teles: 12558
CHOSÉP
ROMANIA
Hewiel Packare! Reprezentanta
Powerard Nicola Balcescu 16
BUCUREST
Te. 130724
Telex: T0ddo
SALI ARABIA
Moden Electronic Establishment
РИ Box 133
AL-FADEAR
Ter 864. 467TH
Felex: 870136
Cab ELECTA AL-KNODAR
CHOSE MP
Modern Electronic Felabistment
EO Box 1228 Baghdadah Steer
JÉDDAR
Fel 842.0079
Telex 201035
Cable: LLECTA JEDPAR
CHOSEMP
Moden Élection Esfabichmest
PO Sos 27728
RIYADH
Ter 491-9715, 401-6387
Telex: 200756
CACA
SCOTLANE
Hewlet-Fackard Ltd
SOUTH QUEENSFERRY
Wes: Lolas, ERIC 90T
G8-Scofand
Tel: 1031) 3311188
Telex: 72582
ACHOMCEEM
SINGAPGRE
Hewlett Packard Singapore ¿Py |
[Wot
F.&. Sox 58 Mexandra Fos| (fice
SINGAPORE, Y 116
th Floce, Inchtèpe House
450-457 Alexandra ford
SINGAPORE 0511
Tel: 631786
Teles KRESCSO ES 34709
Cable: HEWPACK, Singepore
ACH CS Ean o
SOUTH AFRICA
Hewlett-Packard South áfrica ¿Pry +
Lis
PG Bos 100
Howard Mace
Pave Park Center. Forest Dave,
Pinelanes
CAPE PROVINCE 7550
Te: L9-7955, 53-7955, 53-7987
fees 57-20006
ATH DOME MSP
Héwlet|-Fackærd South Africa (iy |
Led.
РО Вох 33345
Glenslankz 0030 TRANSVAAL
te Fijos Essl
Constantia Park Frige Shopping
Senbe
Conslanta Fark
PRETORIA
Tel: 552042
Telex: 32:63
CHE
Hewien-Fackard South Arica [hy]
LIE
Prvale Bag Wendywood
SANDTON $144
Ta 607-5111, 607-5195
Telex: A-20A7T
Cable. HEWTACK Joñan: 560
ACHE CM CSE MSF
SPAIN
HMewk-Packhard Esato 5.4.
eEnenza, 321
E-HARCELONA 25
Tel. (31 4272-04-51, 231-7354
Teja: 52603 hpbee
ACHEMCS EMO
Hewlett-Packard Española 5 A
c'Gan Vicente SH
Ecificao Altya 8.7 B
E-BILBAO =
Те! (4) 23-8306, 14} 23-6206
ACH EME MS
Hewlett-Packard Españots SA
Cale Jerez 3
E-HAGRD 16
Tel: [3] 458-2600
Telex: 23515 hpe
ACME
SWEDEN
Hewlett Packard (Schweiz) AG
Skalolisgatan 9, Kista
Box 18
3 15333 SPANGA
Tel: (38) 750-2000
Telex: 854-3072
ACHOMOS FMS FP
Hewlett Packard Sverige 48
Fretaliscalan 35
142132 VASTRA-FAÓLUNDA
Tel: #35; 49-06-50 -
Telex (654) 10721 (viz SPANGA
alice)
CH CME PB
SWITZERLAND
Hewlei Packard (Schweiz) AG
29 Chemin Chilean Bloc
5-12 70 L£ CIGNON-Gereva
Tél: 022) 96-0327
Telex: 27333 hpag ch
Cable: HEWPASKAD Geneva
ACMEMEF
Hewlet-Packard (Schwer) AG
Adega y
CH 830687 WIDEN
Tel: (E 59-118
Telex. 58933 hpag ch
Cable: APAG Cit
ACHEM OSE MER
SYRIA
Cenergi Elecironic ng
Mus Basta-Afnal Ebr Kays Sireer
PQ Box 5781
DAHASCUE
Tal 33.24.87
Telex PIE TIKAL
Cable: ELECTROSOR DAMASCUS
£
TAWAN
Hewlell-Fauckarg Far баз) Ен,
Taïwan Branch
St Floor
295 Fun Hwa Mort Road
TAIPEI
Tel.027 751-5404
Table HEWRACK Taipei
ACHEMCE EMP
THAILAND
Unimesa
30 Falpong Ave. Surisng
PANGKOR 5
Tal: 234 091, 234 092
Tolar: 84470 Simenca TH
Cable: UMMESA farghok
ACEM
TRINIDAD à TOBAGO
Caribbean Telecoms Lid,
504 Jérningham Avenue
BC Вох 737
PORT-DF-SPAIN
Tel 2-445 13 B2-440 14
Telex: 235.272 MUGDD Wo
ACMEMP
TUNISIA
Tunisie Électronique
T1 Avenue de ly Liberte
Tis
Те! 260 144
EF
TURKE Y
Feknir Company Lid,
fran Caddes: No, ?
Navakicero, AMARA
Ter 27£800
Telex: 42155
E
UNITED ARAB EMIRATES
Ernitac Lid
EU Box tddi
SHARAN
ten 354127, 354124
Telex: 68136 Emitac Sh
ÉCHOS ERP
UNITED KINGDOM
ads: GREAT BRITAIN
SCOTLAND
UNITED STATES
Alabama
Hewlett-Packard Co,
F0. Box 4207
8200 Whiesburg Drive, SE.
HENTÓVILLE, AL 35899
Tel: 20% 981-4591
CHEM CSE ae
Arizona
Hewietl-Pachard Le
2306 East Magnotg Sireot
PHOENIX, A7 35034
Tel: (60:27 273-8000
ACHCRECS.E.MS
Hewlett-Packard Co.
2424 Ernst Aragon Road
TLCSQH, AZ 85706
Tel (602) 489-463:
CHE WE"
Cailfornia
HRewielt-Parkare Co.
T821 Caroga Avenue
CANDGA PARK, Ca 91304
Tel: (213 702.0300
АСНСВЕР
Hewient-Packard Co.
1430 East Drangethorpe
FULLERTON, CA 02531
Tel (714) RYO 1008
CH CWE CSE Mp
Héwlet-Packärd Co
3939 Lankershra Bhd
HORTH HOELYWOUD, CA 91804
Tal: (213) 6771287
Regronal Meadtuaniers
Hewlett-Packard Ce
Зак) Не Амаль
РАО КТО. СА ЗА
Tel (415; 651-8006
CHOSE
Нез Раск аи) Гиз.
546 W. North Market Boulevard
SACTAMERTO, CA 05534
tel 4218) 929.722?
AT CHOSE US
Hewlett-Packard Co
9656 Aero Privé
P.O. Sox 21333 SAR DIEGO, CA
82123
Tel (7141 279-3700
CHEMESE MP
Rewiell Packard Co.
3303 Scoll Boulevard
SANTA CLARA, CA 95050
Tel: (48; 998-7006
A GH.OM.D5 FE MP
Colorado
Rewial-Fackard Co.
24 wetness Mace, East
EXGLEWODÉ, CD 801132
Tes: 1303) 77 1.3455
A.CH EMOS E MS
Connecticut
Hewles Packard Do,
47 Barres Midusteal Aoas South
FO Box 5007
WALLINGFORD, OT 05407
Fel: (203) 7655-7801
ACH CM CS EMS
Fiorida
Hewlett-Packard Co
2.0. Вох 24219
2801 ММ 82nd Street
FORT LAUDERDALE, FL 33367
Tel: {353% 973-2600
CHCSE MP
Hewial-Packangd Co.
S080 Woodcock Drive, 8152
Browsed! Balding
SACKSONVELE, FL 32207
Tes 1954} 199-0663
Sr ET Ms
Rewel-acikard Co.
PL Box 13516
6177 Laxe Ejenor Drive
ORLANDO FL 32000
Tet 1305) 465-2900
A, CH CMOS EMS
Hewieth-Pack arg Jo.
5750 North Hoover, Suite 123
TAMPA, Fi 33634
Teds {833 872-0000
ACH OMCS E* A”
Georgia
Hevlen Packard Co.
PE Sox 105005
ATEANTA, 4 30368
2005 Sexdh Park Place
ATLANTA, CA 30139
Tél: (404) 955.1500
Telex: 430-766-4898
ACH.CM CSE MP
Hewiel-Pachard Co.
PO Box 2103
WARMER AOBINS, GA 37000
1172 N. Davis Drive
WARNER AGES, GA 31003
TREO 17) 91-0651
E
Hawai
Hewlett. Packard Go.
Кама Plaza, Suite 190
BBY South King Street
HONGLUES, HI 96213
Tel: (8608) 526- 1556
ACHE MS
ИНН
Hewiel-Fackard Co.
5201 Follyiew five
ADLLING MEADOWS, €, SONDA
Tel (312) 255-0900
A CH CMOS EMP
Indiana
Hewinll- Packard Co
PG Bow 50807
7301 Mo Shadeand Avenue
INDIANAPOLIS, IW 46250)
Te +317} Ré2-1060
ÀCHOHCSE MS
юга
Hewiell-Packard Co.
2415 Henz Road
IOWA SITY, 3h E2240)
Tel. [1501 351-1000, 386-6477
ELE” MS
Louisiana
Aewle-Packatd Co
РО. Вах 1449
KENSER, 14 TOORD
150 james dre Easl
PESTAMAN La TOCGO7
Tel 1504; 667-4100
ACHES: ME
Maryland
Hewiell-Packard Co.
Те Standard (rive
HANGYER, MD 21576
Tel (51; 796-7700
ACHEWM OSE MS
Hewietr-Packard Do.
2 Choke Cherry Road
ROCKFELLE, MO 20856
Tel (301) 848-8375
Telex 710-076.0685
A CHOW CS EME
Massachusetts
Fawiell-Fach ard Co.
37 Hartwes Avene
LEXINCGTOS, MÁ (2373
Tel. (5175 663-6066
A CHR CEE MF
Michigan
Hewlett Pach an Co
23855 Research (Rive
FARMINGTON HILLS. MI 48024
Tel [3133 476.8408
ACH CASE ME
Minnasots
Hewietl-Fack ard Ce,
“025 W. täfpénteur Ave.
ST FALL, MK 55153
Tei (6127 544-70;
ACH CHM USEF
Missouri
Hewlett-Packard Ce.
11133 Colorado Avenue
KANSAS CETY, MO 64137
Tel (H16; 764-8008
Telex. 210-777 1.7587
ACHÔMCSE US
Hewlet-Paricard Co.
1024 Executive Parkway
ST LOUIS, MO 63541
Tal: (314: 978-5706
ACHOSE MP
New Jarsey
Hewlelt-Fauxard Co.
Crystal Brook Professional Building
Route 35
EATONTOWN, NJ CTT 24
Tel: 1261) 547. 1384
ACER
Hewiei|-Fackard Ce,
ЖЕ20 Denny Arad
PARAMS, NJ 07552
Tel: 1261) 265-5006
ALACMCS.E MP
Hewlen-Fackare Co.
60 New England Av. Wesl
PISCATAWAY, Ni OBH54
Tel 1204) 08% 7198
ACHCMCSÆ
Naw Maxico
Hewlett-Packard Co.
P.O. Box 31834
ALEUQUÉRQUE, Ni 67112
11500 Lomas Blvd NE.
ALBUGHERQUE, HM A7 373
Tes (500) 202-1330
Тех: 930-989. 1 188
CHCS ES
Now York
Hewiell-Fackard Co.
S Complater Give South
ALBANY, NY 12208
Tel 1518) 5458-1550
Tales: 710-444-4551
ACHE ES
Hewlett-Packard Co,
200 Cross Keys Office
FAIRPORT, NY £44550
Tal: 47 16) 223-9950
Telex: 510-253-0088
THOM DS E M3
Hewleli-Packard Go,
7641 Henry Clay Bhd.
LIVERFOOE, NY 13088
Tal £345) 451.1520
ACH OM EMS
Hewlett-Packard Ce.
Ho. 1 Pennaylvrania Plaza
B5th Floor
34th Street & 6h Avenge
NEW YORK. NY 10113
TE 1212 971-0800
CHOSE" WM"
“Arranged alphabetically by country (cont.
EewlsE-Packard Co,
J Crossways Park Wes
WOCEBURY NY 11707
Tel: 1618) 921-6360
Telex: 515-221-2183
ACHCMCSEMS
Mort Carofina
Hewlett-Packard Co.
PO Box 26500
5605 Hoanne Way
GREENSBORO, MC 27440
Tel #518) 852. 1800
ACH CM CSE MS
Cho
Hewlelt-Packars Co
15500 Sprague Road
CLEVELAND, OH 44 130
Tel (216) 243-7300
Télec 510-423-9430
A CHOW CSE MS
Hewlef-Packarg Co
967 CARNE Ave.
COLUMBUS, OH 43229
Tel (614) 436: 1041
CHOMOSE"
Howiel-Packard Co
PA. Box PRÉ
336 Progress Ad.
CAYTON, OH 45349
Ter: 4515) 854-6202
ACH CME" MS
Oklahoma
Hewien- Fackard Co
Pal, E: 32008
ОКСАНОМА СЕГО ОЖ Тала
304 N. Mendian Avenue, Suite A
ÉKLARGHA CITY, DE 73307
Tel: (AUS! 955-9489
A* CHE" MS
Dragon
Hewlett-Packard Ce,
97555. W. Plone Court
WILSONWELE, OR 97070
Tel: (503) 682-6805
ACHCS.E".ME
Pennsylvania
Howiet-Parkard Co,
192 € Bib Avenue
King of Prussia Industrias Pag
HIG OF PRESSES, PA 15456
Tel: (215) 265-7006
Telex: 510-886-270
ACH CMECS EMP
Hewlett-Packard 06,
151 £ela Drive
PITTSBURGH, PA 15238
Tel: (412) 782-0800
ACHCÈE MP
South Caroline
Hewlett-Packard Ce
FO. Box 21708
Brookside Park, Suite 122
1 Harbeson Way
COLONIA, SC 29010
Te: (503) 7132-0400
CHE MS
Texas
Hewlet-Packärd Ca
Huete 3 1
TEOG Shoalcreed, Biv,
AUSTIN, TX P8757
Tal (512) 458.3143
Е
Hewlett-Packard Co.
Sete 1130
417 Herth Mesa
EL PASO. TY 0007
Tel (815) 533-3555, 535-4488
CRE" MO
Fewek-Packard Co.
PO. Bow 42816
HOUSTON, TX 77042
10535 Harwié Street
HOUSTON, TX 77056
Tes (713) 776-6806
ATH CW CSE Me
Hewlett-Packard Co.
PO. Bax 1276
FICHARBSON, 74 75080
530 £, Campbell Bd.
AICHABOSON, TX 75083
Tel: 1234 231-6101
ACH OM CS EAP
Hewielt Packard Ca.
P.O Box 32903
SAN ANTONIO, TX 782 16
020 Central Parkway South
SAR ANFONIO, TX 782352
Tel (512) 484-0536
CH.CS EMS
tak
Hewdett-Packard Ce
PQ, Box FREE
3530 W#. 2150 South
SALE LAKE CITY, LT BAHIS
ter 19015 974-1706
ACHES EMS
Virginia
Hewietl-Packard So,
PO Box 9569
284 Himgary Spro Нож
PICHHOND, YA 23228
Tal: {RGA} 285-3431
ACK.CS.E MS
Hewlett-Packard Cr
4106 Pelers Creek Road, NW
ROÔANGKE, VA 24078
Tek 703) 553-2006
CHE* +
Washington
Hewiel-Paciard Co
156 15 5.£. 37 Sites
BELLEVUE, WA 98006
Tel: (+06) 643-4006
ACH OM CSE aap
Wisconsin
Hewiett-Packard Co.
150 5. Sunny Slope Foad
ERCORFIELO, Wi 53005
Tel (414; 784-8609
ACHACA." MP
VHUGUAY
Paño Ferrando ZAC ef
Avenida Hala 2077
Casma de Correo 120
MONTEVIDEO
Tel: 60-2586
Fates, Pubic Booth B90
A CHEM
1i.5.5.R,
Hewlett-Packard Ce
Representative Office
Prtiravsh y Bird. 417 Kalg
HÔSCOW 104008 Tel 204-2074
Telex: 7625 HEWPASK Si
VENEZUELA
Hewlett. Packard de Veheela 0A
Apartase 50934
IA Frarsvessat {os Huices hole
Taiticio Segre
CARACAS НО?
Tel: 236-4135
Tele: 25346 HEWPACK
ACECSÉ MSP
YUGOSLAVIA
Era-Commerce-Representalian of
Hewiell-Packaro
Sava Cantar Delegacia 30
Mientis Poporica $
11150 BÉOGRAB
Tel: 638-762
Telex: 12042 12322 YU SAV CEN
iskra-Commerce Henoresentatión oi
Hewi Packard
Kogrsks dé
& 1000 LAE. JANA
Ter 25 1674 3158/70
Telex:
ZIMBABWE
Fiel Technical Sales
45 Ke Вода, Мог
FA MAA
SALISBURY
Tal 705 231
Telex: 4. 122 96
CEMP
it there 15 no sales oHice listed for véur area, contact one of these
heacquarters offices.
NORTH CENTRAL AFRICA
Hewlett-Packard SA
F Rue du Bété-du-Lan
CH-1217 MEYRIN I, Swilzerand
Tel: (G27) 09-05-51
Telex. 27835 hpse
Cable: HEWEACKSA Geneve
ASIA
Hewich-Parkard Ama Lie,
66 Fina, Sun Hung Mar Center
30 Harbor Re
GPO Box 7095
HONG KONG
Tel: E-832 5271
Telex: 55678 HEWPA HE
Cabre: HP ASA LYÓ Hong Kong
CANADA
Hewel-Packarg (Cemada; 140.
6677 Soraway Drive
MÉSSISAHGA, Criario L4V IMB
Tel (416) 878-6350
Telex: 610-492-4246
EASTERN EUROPE
Hewsall-Packard Gasmbh.
Wenkslrasse 29
PiBox 7
& 1205 VIENNA
Ted: (2221 35-16-2110
Tejex: 135824135066
NORTHERN EUROPE
ewielt-Packard $.À
Hienstede 476
RL-1 $83 AC ANSTELYEEN
The Néthérlands
POBox 908
Mi. 1180 47 AMSTELYEEN
The Neteriengs
Fer 20 43777
OTHER EUROPEAN
Hawlell-Fackarg S.A.
? Age du Ecés-du-l ar
CH. 1217 METAIN à, Switzerland
Ter 1027) 98-96-51
Telex: 27535 hose
Cae HEWPACKSA Geneve
(Offices in he Work Trade Center
MEDITERRANEAN AND
MIDDLE EAST
Hewlett-Packard S.A.
Mediterranean and Middbe Eas
Operations
Arig Centre
de Kilissias Ave.
Amaroussion, ATHENS, Greece
Tak 803-0350 808.0429
Telex: 21-5588
Cabée: HEWPACKSA Athens
EASTERN USA
Hewlett-Packard Co.
4 Choke Sherry Rodd
Rockyilie, ME) 26650
Tel 1301) 256-200
MIDWESTERN USA
Hewlett-Packard Co.
F267 Tollview Drive
RGLLING MÉADOWS, À 60006
Tek 1312) 256.580
SOUTHERN USA
Hewle!-Packard Co.
FO. Box 105005
AGO Inerstale A, Parkway
ATLANTA, GA 30338
Tel: (434) 955-1500)
WESTERN HSA
Hewlett-Packard Co.
3939 Lenkarsim Blvd,
LOS ANGELES, CA 91604
Те! 1213 877-1287
OTHER INTERNATIONAL
AREAS
Hewlett-Packard Go.
ercommental Headogeriers
3485 Degr Creek Hoad
PALO ALTO. CA Saa
Tel: 1418) 857-1501
Telex: 334-8300
Cable: HEWPACK
14 Apail 1882