HP 85027A Service manual

OPERATING AND SERVICE MANUAL
~irector
US P!avy Cahbrat!on Laboratory
Box 16 US Naval Air Station
FPO San Francisco 96654-2901
HP 85027A/B/C
DIRECTIONAL
BRIDGE
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H EWLETT
PACKARD
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Hewlett-Packard Company
Video Communications Division
5301 Stevens Creek Boulevard
PU Box 58059
Santa Clara, Cilifornia 95052-8059
408 246-4300
October 30, 1997
Jim Canton
Government-Industry Data Exchange Program
GIDEP Operations Center
Corona, California 91718-8000
Subject: COPYRIGHT RELEASE
Dear Mr. Canton:
Attached is the Copyright Document Release form you sentto me.
Inregards to thedocuments you have listed on your form thereproduced documents
must include the following legendand disclaimer:
‘Copyright - Hewlett-Packard Company (HF). Reproduced with HP permission.
Hewlett-Packard makes no warranty of any kind with regard to this material, including,
butnot limited to, the implied warranties of merchantability and fitness for a particular
purpose. Hewlett-Packard is not liable forerrors contained herein or for incidental or
consequential damages in connection with the furnishing, performance or use of this
material or data.’
Please let me know, if you have any questions or if I can be of any furtherassistance.
Sincerely,
HEWLErr-PACKARD COMPANY
Dixie Luebcke
GIDEP Representative U7

MANUAL CHANGES
NOTE
Manual change supplements are revised as often as necessary to keep manuals as
current and accurate as possible. Hewlett-Packard recommends that you periodically
request the latest edition of this supplement. Free copies are available from all HP
offices. When requesting copies, quote the manual identification information from your
supplement, or the model number and print date from the title page of the manual.
MANUAL IDENTIFICATION
This supplement contains important information for correcting manual errors and for
adapting the manual to instruments containing improvements made after the printing of the
manual.
Two types of information are included:
UPDATES - APPLY TO ALL SERIAL NUMBERS.
NUMBERED CHANGES - UPDATES THAT ARE SERIAL NUMBER PREFIX RELATED.
The information is in the following order: UPDATES, NUMBERED CHANGES in sequen-
tial order with applicable illustrations as close as possible to each numbered change.
To use this supplement, make all UPDATES and all appropriate serial number related
CHANGES indicated in the following pages.
= NEW ITEM
UPDATES
Replace the following manual pages with the pages in this document (UPDATES):
General Information
1-6
~ Performance Tests
4-8
Adjustments
5-3
5-4
us r:~-:~’ C’~’~~
Box i~ ~
FF0 San Fra~~ £~3~
JANUARY 9, 1987
4 HEWLETT
I’ PACKARD
HP Number: HP 85027A/B/C
Date Printed: July 1985
Part Number: 85027-90001
Printed in U.S.A.

HP 85027A/B/C General Information
Table 1-1. Specifications
HP 85027A HP 85027B HP 85027C
Frequency Range (GHz)1
0.01 -1 8.0
0.01 -26.5 0.01 -1 8.0
Connector: Input Type
N (1) 3.5mm (f) - Type N (f)
Test Port APC-7 3.5mm (f) Type N (f)
Max. Input Power +23 dBm or
±l0volts
+23 dBm or
±l0volts
+23 dBm or
±l0volts
Directivity2
0.01 to 12.4 GHz >=4OdB >=40 dB >=36 dB
12.4 to 18.0 Ghz >=40 dB >=40 dB >=34 dB
18.Oto2O.OGhz — >=4OdB —
20.0to26.5GHz —
>=36dB —
Test Port Match2
0.01 to 8.4 GHz
>=23dB >=23dB >=23dB
8.4to12.4GHz >=l9dB >=l5dB >=l9dB
12.4 to 18.0 GHz > = 15 dB > =15 dB > = 15 dB
18.Oto2O.OGhz — >=l5dB
—
20.0 to 26.5 Ghz — >=11 dB —
it 50 MHz
to +7dBm input to bridge
0
0
Ui
E
E
S
3
2
I
U
-~
— Spe If Ice lons*
I .
2
—5 —10 — 15 —20 —‘5
Deite Power (dB) —~30
—~5 40
‘Measured
‘Ru at I vi
‘25’Ci5’C
Dynamic Power Accuracy
1-6
UPDATES APPLY TO ALL SERIALS

HP 85027A/B/C Performance Tests
Equipment HP
85027A HP 85027B HP 85027C
Sweep Oscillator HP 8350B HP 8350B
HP 835DB
RF plug-in HP 83592A HP 83595A HP 83592A
Scalar network analyzer HP 8757A HP 8757A HP 8757A
Cal. open/short 85021 -60021
85037-60001 85032-60001
50 ohm load 909A opt 012 909D
909A opt 012
Adapter* not req’d 85027-60002 1250-1 475
* A second directional bridge is required as a test instrument in addition to the directional bridge
under test. The adapters recommended are suitable for use with two similar bridges.
Procedure
1. Set up the equipment as shown in Figure 4-4, with the calibrated open connected to the test
directional bridge, not the directional bridge under test.
2. PRESET the analyzer. It should indicate that Input A is on Channel 1. Turn off Channel 2. The
Preset should also preset the sweep oscillator to a sweep time of 200 ms with 27.8 kHz
modulation on.
3. Set the sweep oscillator start and stop frequencies to correspond to the first band of
frequencies in the Performance Test Record (0.01 to 8.4 GHz).
4. Perform an open/short calibration and store it in memory.
5. Connect the directional bridge under test to the first directional bridge, test port to test port
with an adapter if necessary. Connect the 50 ohm load to the input port of the directional
bridge under test.
6. On the HP 8757A turn on the cursor and press the [MAX] softkeyto find the point of minimum
return loss (highest point) on the trace. Enter this value on the Performance Test Record.
7. Repeat steps 3 through 7 for each frequency band of interest.
8. If the test results (including uncertainties) are not within specifications -as indicated on the
Test Port Match Performance Test Record, refer to the Troubleshooting section of this
manual.
Table 4-2. Test Port Match Performance Test Record
HP 85027A HP 85027B HP 85027C
Frequency Spec. Test Spec. Test Spec. Test
Band (GHz) Result Result Result
0.01-8.4 > =23 dB ______ > =23 dB ______ > =23 dB _______
8.4-12.4 >=l9dB _____ >=l5dB _____ >=19dB _______
12.4-18.0 >=l5dB _____ >=l5dB _____ >=l5dB _______
18.0-20.0 — >=l5dB _____ —
20.0-26.5 — >=11 dB ______ —
Uncertainty* >=ldB >=ldB >=2dB
4-8
UPDATES APPLY TO ALL SERIALS

HP 85027A/B/C Adjustments
5. Remove the printed, plastic switch configuration label from the back of the
bridge (additional labels are available as HP P/N 85027-80004).
6. Disconnect the power sensor from the attenuator. Turn on modulation. Con -
nect the bridge input port to the attenuator, leaving the test port open.
7. On the analyzer, turn on averaging (avg. factor =8), and the cursor. On the HP
8757A, turn on smoothing (5%).
8. Adjust R5 (see Figure 5-2) for a cursor reading of -6±0.1 dBm.
9. Set the attenuator to 30 dB. Adjust R29 (Figure 5-2) for a cursor reading of
calibrated -30 dB minus 6 ±0.1 dBm.
10. Set the attenuator to 0 dB and adjust R29 (if required) until the cursor reads -6
±0.1 dBm.
11. Repeat steps 8 through 10 until the change in level is equal to the calibrated 30
dB ±0.1 dB and, with 0 dB attenuation, the cursor indicates -6±0.1 dBm.
DC Adjustment Procedure
NOTE: You can perform this DC procedure only with an HP 8757A analyzer.
12. On the HP 8757A, set DC mode.
13. Set the reference level to -50 dBm at midscreen, and the scale to 5 dB/div.
14. On the source, turn off the RF power.
15. On the analyzer, press [CAL] [CONFIG SYSTEM]. If your analyzer has firm -
ware revision 2.0 or above, press [CAL] and select [MORE] [AUTOCAL],to turn
auto calibration OFF.
16. On the bridge, use a short jumper to short pad Y (where yellow wire termi -
nates) to ground.
17. Adjust R25 (Figure 5-2) for a minimum reading on the analyzer (it should be <-
50 dBm).
18. Remove the short, and turn auto cal back ON.
Feedthru Null Adjustment Procedure
19. On the analyzer, press [CAL] and select [DC DET ZERO] [AUTOZERO].
20. Adjust RiO (Figure 5-2) for as HIGH a trace as possible. Adjust slowly, because
averaging and smoothing mask adjustment effects. -
NOTE: Steps 19 and 20 must be repeated until no further change is noted.
5-3
UPDATES APPLY TO ALL SERIALS

HP 85027A/B/C Adjustments
DC Mode RF Adjustment Check
21. On the source, turn on the RF power.
22. Set the attenuator to 0 dB.
23. On the analyzer, verify DC mode, averaging, smoothing, and the cursor are still
on. Allow the trace to settle. Press [DISPLAY][MEAS-.MEM][MEAS-MEM].
The cursor should now indicate 0.0 dB.
24. Set the attenuator to 30 dB.
25. The cursor should now indicate the calibrated -30 dB to within 0.8 dB.
26. If the value indicated is not within 0.8 dB of the calibrated -30 dB, It may be
necessary to adjust R5 and R29 until the difference between the 0 dB and 30
dB attenuator settings is just within 0.8 dB of the calibrated 30 dB. Adjust R5
when the attenuator setting is 0 dB and R29 when at 30 dB.
27. If any adjustments are made, it will be necessary to repeat the AC Adjustment
Procedure again, only this time using a tolerance limit of ± 0.8 dB instead of the
0.1 dB indicated in steps 8 through 11. This will allow you to split the error
difference between the two modes of operation.
28. Both AC and DC dynamic accuracy specifications should be within the limits
stated in Table 1-1.
5-4
UPDATES APPLY TO ALL SERIALS

HP 85027A/B,/C
DIRECTIONAL BRIDGE
SERIAL NUMBERS
This manual applies directly to the HP 85027A/B/C
directional bridge with serial numbers prefixed as
follows:
Model
HP 85027A
HP 85027B
HP 85027C
Serial Prefix
2522A
2522A
2522A
For additional information about serial numbers, refer
to INSTRUMENTS COVERED BY MANUAL in
Section 1 and BACKDATING, Section 7.
© Copyright HEwLETr-PAcKARD COMPANY 1985
1400 FOUNTAINGROVE PARKWAY, SANTA ROSA, CA 95401 U.S.A.
MANUAL PART NUMBER 85027-90001
Microfiche Part Number 85027-90002
U. -
Box i~- ~ -
FF0 San FI~r~C~ ~ -
Printed: JULY 1985
4 HEWLETT
F PACKARD

HP 85027A/B/C Table of Contents
CONTENTS
Section Page
GENERAL INFORMATION 1-1
Introduction 1-1
Specifications 1-1
Safety Considerations 1-1
Instruments Covered by Manual 1-1
Description 1-3
Equipment Required But Not Supplied 1-3
Scalar NetworkAnalyzer 1-3
HP 8757A 1-3
HP 8756A 1-3
HP 8755C 1-4
Swept Signal Source 1-4
HP 8350B 1-4
HP 8340A 1-4
HP8341A 1-4
Detectors 1-4
Power Splitters 1-4
Equipment Available 1-4
Accessories Available 1-4
Recommended Test Equipment 1-5
Warranty Restrictions 1-5
2 INSTALLATION 2-1
Introduction 2-1
Initial Inspection 2-1
Preparation for Use 2-2
Power Requirements 2-2
Connecting the HP 85027 2-2
Mating Connectors 2-2
Operating Environment 2-3
Storage and Shipment 2-3
Environment 2-3
Packaging 2-3
3 OPERATION 3-1
Introduction 3-1
Operating Precautions 3-1
Connector Wear 3-1
Operating Instructions 3-1
Operator’sCheck 3-4
Equipment 3-4
Procedure 3-4
1

HP 85027A/B/C Table of Contents
4 PERFORMANCE TESTS 4-I
Introduction 4-1
Performance Test Record 4-1
Directivity 4-1
Description 4-I
Equipment 4-2
Procedure 4-2
Below 2 GHz 4..3
Above 2 0Hz 4-4
Test PortMatch 4-7
Specifications 4-7
Description 4-7
Equipment 4-8
Procedure 4-8
DynamicPower Accuracy (AC and DC) 4-9
Specifications 4-9
Description 4-9
Equipment 4-9
Procedure 4-10
5 ADJUSTMENTS 5-1
Introduction 5-1
Adjustment Procedures 5-1
AC Adjustment Procedure 5-2
DC Adjustment Procedure 5-3
Feedthru Null Adjustment Procedure 5-3
DC Mode RF Adjustment Check 5-4
6 REPLACEABLE PARTS 6-1
Introduction 6-1
Exchange Assemblies 6-1
Replaceable Parts List 6-1
Organization 6-1
Information 6-1
Ordering Information 6-2
7 MANUAL BACKDATING CHANGES 7-1
Introduction 7-1
Application 7-1
8 SERVICE 8-1
Introduction 8-1
Theory of Operation 8-I
Troubleshooting Procedures 8-2
GainingInternal Access 8-2
Cable ContinuityCheck 8-2
Power Cable Replacement 8-3
Input Port and Test Port Resistance Checks 8-3
Microcircuit Check 8-3
A2 Circuit Board Assembly Replacement 8-4
Al Bridge Microcircuit Assembly Replacement 8-4
Power Supply Check 8-5
Signal Path Check 8-7
Clock/Control Check 8-7
Connector Inspection 8-7
Visual Inspection 8-7
Mechanical Inspection 8-9
Gaging the Precision 3.5mm Connector 8-9
Gaging the APC-7 Connector 8-14
11

HP 85027A/B/C Table of Contents
FIGURES
Figure Title Page
1-1 HP 85027A Directional Bridge in AccessoryCase Supplied 1-0
1-2 HP 85027A, 85027B and 85027C Directional Bridges 1-2
3-1 HP 85027B with Connector Saver 3-2
3-2 HP 85027 Features(Rear View) 3-3
3-3 Typical Operator’s Check Using HP 8757A 3-4
3-4 Typical Measurement Setup Using HP 8757A 3-6
3-5 Typical Measurement Setup Using Power Splitter 3-6
4-I Directivity Performance Test Setup 4-2
4-2 Probable Range of Directivity Values 4-3
4-3 Signal Separation Chart 4-5
4-4 Test Port MatchPerformance Test Setup 4-7
4-5 DynamicPower Accuracy Performance Test Setup 4-9
5-1 Adjustment Setup 5-1
5-2 Locations of Adjustment Potentiometers 5-2
6-lA HP 85027A Replaceable Parts Identification 6-5
6-1 B HP 85027B Replaceable Parts identification 6-7
6-lC HP 85027C Replaceable Parts Identification 6-9
6-2 A2 Circuit Board Component Location (Component Side) 6-1 1
6-3 A2 Circuit Board Component Location (Solder Side) 6-1 1
8-1 A2 Circuit Board Power Supply Check Points 8-5
8-2 A2 Circuit BoardSchematic 8-6
8-3 Cleaning APC-7 Connectors 8-8
8-4 SMA and Precision 3.5mm Connectors 8-10
8-5 Precision 3.5mm MaleConnector Gauge 8-1 1
8-6 Zeroing Precision 3.5mm Male Connector Gauge 8-12
8-7 Measuring Precision 3.5mm Male Connectors 8-13
8-8 The APC-7 Connector Gauge 8-15
8-9 Zeroingthe APC-7 Gauge 8-16
8-10 Gaging APC-7 Connectors 8-17
8-11 Collet Removal and Replacement, APC-7 Connectors 8-18
111

HP 85027A/B/C Table of Contents
TABLES
Table Title Page
I - I Specifications 1-6
1-2 Supplemental Characteristics 1-8
1-3 System Verification Kits 1-9
1-4 Accessories Available(Adaptersand General) 1-9
1-5 Recommended Test Equipment 1-10
2-1 Contents of HP 85027 Directional Bridges 2-1
4-i Directivity Performance Test Record 4-6
4-2 Test PortMatch Performance Test Record 4-8
4-3 DynamicPower Accuracy Performance Test Record 4-10
6-1 Exchange Microcircuit Bridge Assemblies 6-2
6-2 Manufacturers Code List, Reference Designators
and Abbreviations 6-2
6-3A HP 85027A Replaceable Parts 6-4
6-3B HP 85027B Replaceable Parts 6-6
6-3C HP 85027C Replaceable Parts 6-8
6-4 A2 CircuitBoard Assembly Replaceable Parts 6-10
7-1 Manual Backdating Changes By Serial Number Prefix 7-1
8-1 Conductors in Power Cable Wi 8-3
iv

HP 85027A/B/C General Information
Figure 1-1. 1-IP 85027B in Accessory Case Supplied
1-0

HP 85027A/B/C General Information
SECTION 1
GENERAL INFORMATION
INTRODUCTION
You will find operatingand service information for the Hewlett-Packard 85027A,
85027B and 85027C directional bridges in this manual. When the three different bridges
share a common traitor procedure, they will be referred to as the HP 85027. The HP
85027B in its case is illustrated in Figure 1-1. Figure 1-2 shows all three directional
bridges. The rest of this section describes specifications, supplemental performance
characteristics, safety considerations, instrumentidentification, description, and other
basic information.
Youmay order this manual in microfiche form aspart number 85027-90002. With the
manual (in 4x6 inch microfilm transparency format) you will also receive the latest
manual changes supplement and all pertinent service notes in print form.
SPECiFICATIONS
Table i-I lists the specifications for the HP 85027 directional bridges. The specifications
are performance standards or limits against which the bridges may be tested. Table 1-2
lists supplemental characteristics, non-warranted but typical performance parameters,
useful in test applications.
SAFETY CONSIDERATIONS
The voltages in these directional bridges do not warrant more than normalcaution for
operator safety.
CAUTION
The CAUTION sign in this manual identifiesan operating
procedure or practice which, if not correctly performed, could
damage or destroy the equipment. Do not proceed beyond a
CAUTION sign until you fully understand and meet the
conditions indicated.
INSTRUMENTS COVERED BY MANUAL
You will find a two-part serial number on the bridge. The first four digits and the letter
are the serial number prefix. The last five digits are the sequential suffix which is
unique to each bridge. The contents of this manual apply directly to bridges with the
same serial number prefix as the one on the title page under theheading SERIAL
NUMBERS.
If the serial prefix of your bridge is not listed on the title page, your instrument is
different from those documented in this manual. The differences are documented in the
yellow manual changes supplement supplied with the manual.
1—1

HP 85027A/B/C General Information
Figure 1-2. LIP 85027A, 85027B arid 85027C Directional Bridges
1-2

HP 85027A/B/C General Information
To keep this manual as current and accurate as possible, Hewlett-Packard recommends
that you periodically request the latest manual changessupplement as it may contain
error correction information as well as change information. The supplement for this
manual is keyed to the manual’s print date and part number (on the title page) and is
available free from Hewlett-Packard.
DESCRIPTION
The HP 85027 bridges are microwave directional bridges designed for making
modulated (AC) or unmodulated (DC) scalar reflection measurements with the HP
8757A scalar network analyzer and AC measurements with the HP 8765A and
HP 8755C. A single zero-biased Schottky diode detector in the bridge performs
reflection measurements by sampling the return loss of the device under test. A detector
can be added for simultaneous transmissionmeasurements. A power splitter can be used
with the bridge or detectoror both for ratio measurements. In all modes, typically the
RF input signal is supplied by a sweep oscillator or a synthesized sweeper.
The frequency range and connector type of each bridge appears below and in Table
1—1.
HP85027A HP85027B HP85027C
Frequency range (GHz) 0.01 to 18.0 0.01-26.5 0.01-18.0
Input Connector TypeN (f) 3.5mm (f) TypeN (f)
Test Port Connector APC~7* 3.5mm (f) Type N (f)
*APC.7 is a registered trademark of the Bunker-Ramo Corporation.
EQUIPMENT REQUIRED BUT NOTSUPPLIED
The followingequipment is required for use with the HP 85027 in making reflection,
transmission and ratio measurements:
Scalar NetworkAnalyzer
Thefrequency range of the three followinganalyzers is determined by the HP 85027
directional bridge in use.
HP8757 A: this scalar network analyzer is a microprocessor based four-channel, three
input (four with Option 001) receiver with integral digital display. At RF and
microwave frequencies, it makes scalar transmission and reflectionmeasurements over a
dynamic range of +16 dBm to -60 dBm and amplitude ratio measurements up to 152 dB.
The HP 8757A is completely programmable through HP-lB (Hewlett-Packard Interface
Bus, HP’s hardware, software, documentation and support for IEEE-488 and IEC 625).
Additionally the HP 8757A can control a plotter, a printer, such as the Thinkjet printer,
and a swept source throughthe 8757 System Interface.
The HP 8757A offers both AC and DC detection techniques. The ACtechnique
involves modulatingthe source signal at 27.8 kHz. Note that in this manual the
modulation frequency of 27.8 kHz is actually 27.778 kHz. The DC detection technique
modulates the input signal at 27.8 kHz within the bridge, after the DUT.
HP 8756A: this scalarnetwork analyzer is also a microprocessor based receiver with
its own digital display. With its dual channels, it makes scalar transmission and
reflection measurements at RF and microwave frequencies over a dynamic range of -50
dBm to +10 dBm. It can nieasure amplitude ratios up to 60 dB. It is completely
1-3

HP 85027A/B/C General Information
programmable through HP-lB and can control a plotterand swept source throughthe
8756 System interface.
The HP 8756A is only capable of AC mode measurements with the HP 85027
directional bridges.
HP 875 5C: although this scalar network analyzer is not programmable, it also
measures amplitude levels of -50 dBm to +10 dBm and amplitude ratios of 60 dB. Like
the HP 8756A, the 8755C is capable of AC mode measurements only.
The HP 8755C plugs into a HP 180 series display mainframe such as the HP 182T or
1 8OTR. If your application requires memory or normalization, use this analyzerwith
the HP 8750A Storage Normalizer. Refer to Section 1 of the HP 8755C Operation and
Servicemanual for additional information on HP 8750A/8755C compatibility.
Swept Signal Source
HP 835 OB: This sweep oscillator mainframe, for one, is a good source for the HP
85027 bridges mated to the HP 8757A because it is solid-state, fully HP-lB
programmable and can be controlled by the HP 8757A through the 8757 System
Interface. It has internal 27.8 kHz square wave modulation capability and, depending
on the RF plug-in selected, can coverthe entire frequency range of 0.01 to 26.5 GHz.
HP 8340A: this synthesized sweeper is also fully HP-LB programmable and can be
controlled by the HP 8757A. It does not require a plug-in as it is a complete analog
sweep synthesizer. It generates synthesized output frequencies from 0.01 to 26.5 GHz.
The HP 8340A can be square wave modulated at 27.8 kHz by the HP 8757A.
HP 8341A: this synthesized sweeper differs from the HP 8340A (above) in frequency
range: 0.01 to 20.0 GHz.
Detectors
One or more HP 85025A/B detectors are used with the HP 85027 directional bridges
and~the HP 8757A to make transmission measurements in AC or DC mode. The HP
85025A has a frequency range of 10 MHz to 18 GHz and uses a type-N connector
(Option 001, APC-7 connector). The HP 85025B has a frequencyrange of 10 MHz to
26.5 GHz and uses a precision 3.5mm connector. Detection in the AC and DC mode is
similar to that of the HP 85027. For AC mode transmission measurements, the HP
11 664A/E detector may be used.
Power Splitter
Ratio measurements can be made with the addition of a power splitter. The HP
1 1667A has a frequency range of DC to 18 GHz;the HP 11667B, DC to 26.5 GHz.
EQUIPMENT AVAILABLE
Additionalequipment available for use with the HP 85027 directional bridges and the
HP 8757A scalar network analyzer is listed in Section 1 of the analyzer’s Operating and
Service Manual.
ACCESSORIESAVAILABLE
System verification kits, precision adapters and other miscellaneous accessories available
are listed in Table 1-4. Note that the system verification kits are designed so that the
1-4

HP 85027A/B/C General Information
phase response of the short is exactly oppositethat of the shielded open and thus
provides the best possible calibration data.
RECOMMENDEDTESTEQUIPMENT
Table 1-5 lists equipmentrecommended for use in performance testing the HP 85027
bridges. Other equipment may be substituted if its specifications meet or exceed the
specifica t ions listed in the Critical Specifications column.
WARRANTY RESTRICTIONS
Performing any disassembly or repair procedure not included in Section 8, Service, of
this manual will void the warranty.
Subjecting a HP 85027 bridge to RF input power levels in excess of +23 dBm or ±10
volts will likewise void the warranty.
Connector damage caused by mating with out of spec connectors or improper technique
is not covered by the warranty. (See “Connector Inspection” in Section 8, Service.)
1-5

V
0
w
E
E
HP 85027A/B/C General Information
Table i-i. Specijications
HP 85027A HP 85027B HP85027C
Frequency Range (0Hz)1
0.01-18.0 0.01-26.0 0.01-18.0
Connector: Input
Test port
Type N (f)
APC-7
3.5mm (f)
3.5mm (f)
TypeN (f)
Type N (f)
Max.Input Power +23 dB or
+-10 volts +23 dB
or
+-l0 volts +23 dB
or
+—10 volts
Directivity2
0.01 to 12.4 GHz
12.4 to 18.0 GHz
18.0 to 20.0 GHz
20.0 to 26.5 GHz
>=40 dB
>=40 dB
>=40 dB
>=40 dB
>=40 dB
>=36 dB
>=36 dB
>=34 dB
Test Port Match2
0.01 to 8.4 0Hz
8.4 to 12.4 GHz
12.4 to 18.0 GHz
18.0 to 20.0 GHz
20.0 to 26.5 GHz
>=23 dB
>=19 dB
>=l7 dB
>=23 dB
>=l5 dB
>=15 dB
>=15 dB
>=1 I dB
>=23 dB
>=19 dB
>=17 dB
— 5 —cv
Delta Power (dB)
‘Measu red
‘Re I at i ye
*25°C±5C
at 50 MHz
to +ldBm input to bridge
D~ nanuic Power Accuracy
1-6

HP 85027A/B/C General Information
Dimensions
cable length
26 mm high x 124 mm wide x 118 mm deep
(1.0” x 4.9” x 4.4”)
1219 mm (48”)
Weight net: 0.5 kg (12 lb)
shipping: 2.3 kg (5 lb)
1 Unless otherwise noted, all specifications apply from 0°C to +55°C.
2+25°C +-5°C.
1-7