OPERATING
AND
SERVICE MANUAL
~irector
US
P!avy
Cahbrat!on
Box16US
FPO
Naval
San
Francisco
Laboratory
Air
Station
96654-2901
HP
85027A/B/C
DIRECTIONAL
BRIDGE
to
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H
EWLETT
PACKARD
____
Hewlett-Packard
Video
Communications
5301
Stevens
PU
Box
58059
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Clara,
408
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Company
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h
P
HEWLETT
PACKARD
October
Jim
Government-Industry
GIDEP
Corona,
Subject:
Dear
Attachedisthe
Inregards
must
30,
Canton
Operations
California
Mr.
include
1997
Center
91718-8000
COPYRIGHT
Canton:
Copyright
to
thedocuments
the
following
Data
RELEASE
‘Copyright-Hewlett-Packard
Hewlett-Packard
butnot
purpose.
limited
Hewlett-Packard
consequential
material
or
damages
data.’
makes
to,
the
no
implied
in
Exchange
Document
you
have
legendand
Company
warranty
warranties
is
not
liable
connection
Program
Release
listed
disclaimer:
(HF).
of
any
of
forerrors
with
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form
you
sentto
on
your
form
Reproduced
kind
with
regard
merchantability
contained
furnishing,
me.
thereproduced
with
HP
permission.
to
this
material,
and
fitness
herein
or
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including,
foraparticular
incidental
or
useofthis
or
Please
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Sincerely,
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orifI
can
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the
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are
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the manual
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and
contains
manualtoinstruments
manual.
Two
typesofinformation are
UPDATES-APPLYTOALL
NUMBERED
The
informationisin
tial
order
To
use
this
CHANGES
CHANGES-UPDATES
the
with applicable
supplement,
indicatedinthe
NOTE
Free
print
date
important
recommends
copies
are
available
identification
from
information
the
title
page of the manual.
information
containing
manuals
that
you periodically
from
for
improvements
as
all
HP
from
your
correcting
made
included:
SERIAL
following order: UPDATES,
NUMBERS.
THAT
ARE
SERIAL NUMBER
NUMBERED
illustrationsascloseaspossibletoeach
make
all
UPDATES
following
pages.
and
all
appropriate
MANUAL IDENTIFICATION
HP
Number:HP85027A/B/C
Date
Printed:
July
Part Number:
manual
after
PREFIX
CHANGES in
numbered
serial
the
RELATED.
85027-90001
errors
and
printingofthe
sequen-
change.
number
1985
for
related
=
NEW
ITEM
UPDATES
Replace
~
JANUARY9,1987
the following
General
1-6
Performance
4-8
Adjustments
5-3
5-4
manual pages
Information
Tests
with
the
pagesinthis document (UPDATES):
us
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I’
HEWLETT
PACKARD
PrintedinU.S.A.
HP
85027A/B/C
Table
HP
General
1-1.
Specifications
85027A
Information
HP
85027B
HP
85027C
Frequency
Connector:
Range
Input
Test
Max.
Input Power
Directivity
0.01to12.4
12.4to18.0
2
GHz
Ghz
18.Oto2O.OGhz
20.0to26.5GHz
Test
Port
Match2
0.01
to
8.4
GHz
8.4to12.4GHz
12.4to18.0
GHz
18.Oto2O.OGhz
20.0to26.5
Ghz
(GHz)1
Port
0.01-18.0
TypeN(1)
APC-7
+23
dBm
±l0volts
>=4OdB
>=40
dB
—
—
or
0.01
-26.5
3.5mm
3.5mm
+23
dBm
±l0volts
>=40
>=40
>=4OdB
>=36dB
>=23dB >=23dB
>=l9dB
>
=
15
—
—
dB
>=l5dB
>
=15
>=l5dB
>=11
(f)
(f)
dB
dB
dB
dB
or
0.01-18.0
-
TypeN(f)
TypeN(f)
+23
dBm
±l0volts
>=36
>=34
—
—
>=23dB
>=l9dB
>
=
15
—
—
or
dB
dB
dB
3
0
2
0
Ui
E
I
E
S
U
—5
—
—10
Dynamic
SpeIfIce
I
—
15
Deite
‘Measured
‘Ru
at
‘25’Ci5’C
Power
lons*
—20
Power
I
vi
—‘5
(dB)
it
50
to
MHz
+7dBm
Accuracy
.
—~30
inputtobridge
-~
—~5
2
40
UPDATES
1-6
APPLYTOALL SERIALS
Equipment
Sweep Oscillator
RF
plug-in
Scalar
Cal.
50
network
analyzer
open/short
ohm
load 909A opt
Adapter*
*
A
second directional
under
Procedure
1.
test.
Setupthe
The
equipmentasshowninFigure
directional bridge,
2.
PRESET
the
analyzer.Itshould indicate
Preset should
modulation
3.
Set
the
on.
sweep oscillator
frequenciesinthe
HP
85027A/B/C
HP
85027A
HP
8350B
HP
83592A
HP
8757A
85021
-60021
012 909D
not
req’d
bridgeisrequiredasa
adapters recommended
not
the
directional bridge
also
preset
Performance
the
start
sweep
and
Test
are
oscillatortoa
stop
Record
Performance
HP
HP
HP
HP
Tests
85027B
8350B
83595A
8757A
HP
HP
HP
HP
85037-60001 85032-60001
909A opt
85027-60002
test
instrumentinadditiontothe
suitable
4-4,
under
that
InputAisonChannel1.Turn
with
for
use
with
the
calibrated open connectedtothe
test.
sweep
timeof200mswith
two
1250-1
similar
frequenciestocorrespondtothe
(0.01to8.4
GHz).
85027C
835DB
83592A
8757A
012
475
directional
bridges.
off
Channel2.The
27.8
first
band
bridge
test
kHz
of
4.
Performanopen/short
5.
Connect
the
directional
calibration
bridge
under
withanadapterifnecessary. Connect
bridge
6.
On
return
7.
Repeat
8.Ifthe
Test
under
theHP8757A
loss
test.
turnonthe
(highest
steps3through7for
test
Port
results
Match
(including
Performance
cursor
point)onthe
each
uncertainties)
manual.
Table
Frequency
Band
(GHz)
0.01-8.4
8.4-12.4
12.4-18.0
18.0-20.0
20.0-26.5
Uncertainty*
4-2.
HP
Spec.
>
=23
>=l9dB
>=l5dB
—
—
>=ldB
Test
85027A
Test
Result Result Result
dB
______
_____
_____
and
test to
and
trace.
storeitin
the50ohm
press
Enter
the
the
this
memory.
first
directional bridge,
loadtothe
[MAX]
valueonthe
frequency bandofinterest.
Test
Record,
Port Match
are not
Spec.
>
=23
>=l5dB
>=l5dB
>=l5dB
>=11
>=ldB
within
refertothe
Performance
HP
85027B
Test
dB
______
_____
_____
_____
dB
______
input portofthe
softkeyto
find
the
Performance
specifications
Troubleshooting
Test
Record
HP
Spec.
>
=23
>=19dB
>=l5dB
—
—
>=2dB
test
port
to test
directional
pointofminimum
Test
Record.
-as
indicatedonthe
sectionofthis
85027C
Test
dB
_______
_______
_______
port
UPDATES
4-8
APPLYTOALL SERIALS
5.
Remove
bridge
6.
Disconnect the power
nect
7.
On
8757A,
8.
Adjust
9.
Set
the
(additional
the
bridge
the
analyzer,
turn
on
R5
(see
the
attenuatorto30
printed,
labels are
input
porttothe
turn
smoothing
Figure
HP
85027A/B/C
plastic switch
available as
sensor from
attenuator,
on
averaging
(5%).
5-2)
foracursor
dB.
Adjust
Adjustments
configuration
HP
P/N
85027-80004).
the
attenuator.
leaving
(avg.
factor
=8),
readingof-6±0.1
R29
(Figure
label
from
Turn
the
test
and
the
dBm.
5-2)
foracursor
the
on
modulation.
port
open.
cursor.
back
On
reading
of
the
the
Con
HP
-
of
calibrated
10.
Set
the
±0.1
dBm.
11.
Repeat
dB
±0.1
DC
Adjustment
NOTE:
12.
13.
14.
15.
You
On
the
Set
the reference
On
the
On
the
ware revision
auto
calibration
16.
On
the
nates)toground.
-30dBminus6±0.1
attenuatorto0
dB
and
steps8through10until
dB
and,
with0dB
attenuation,
Procedure
can
perform this
HP
8757A,
set
DC
DC mode.
levelto-50
source,
analyzer,
turn
off
the
press
[CAL] [CONFIG
2.0orabove,
RF
press
OFF.
bridge,
useashort
dBm.
adjust
the
procedure
R29
(if
required)
changeinlevelisequaltothe
the
cursor indicates
only with
dBmatmidscreen,
power.
SYSTEM].Ifyour
[CAL]
jumper
to
and
short
select
padY(where
until
the cursor reads
calibrated
an
and
HP
the
8757A
-6±0.1
scaleto5
dBm.
analyzer.
dB/div.
analyzer
[MORE] [AUTOCAL],to
yellow
wire
has
-6
30
firm
turn
termi
-
-
17.
Adjust
50
dBm).
18.
Remove
Feedthru
19.
On
the
20.
Adjust
averaging
NOTE:
R25
the
Null
Adjustment
analyzer,
RiO
and
(Figure
short,
(Figure
5-2)
foraminimum
and
turn
Procedure
press
5-2)
[CAL]
for
smoothing
Steps19and20must
UPDATES
auto
cal
and
as
HIGHatrace
mask
be
adjustment
repeated
APPLYTOALL SERIALS
readingonthe analyzer
back
ON.
select
[DC
DET
ZERO]
as possible.
effects.
until
no
further
5-3
(it
should
[AUTOZERO].
Adjust
-
slowly,
changeisnoted.
be
<-
because
DC
21.
22.
23.
24.
25.
Mode
On
the
Set
On
the
on.
The
Set
The
RF
Adjustment
source,
the
attenuatorto0
analyzer,
Allow the
cursor
the
cursor
should
attenuatorto30
should
turn
verify
trace
Check
on
dB.
to
now
now
HP
85027A/B/C
the
RF
power.
DC mode,
settle.
indicate
dB.
indicate
Adjustments
averaging, smoothing,
Press
0.0
the
[DISPLAY][MEAS-.MEM][MEAS-MEM].
dB.
calibrated
-30dBto
and
within
the cursor are still
0.8
dB.
26.Ifthe
value
necessarytoadjust
dB
attenuator settingsisjust
when
27.Ifany
the
adjustments are
Procedure
0.1
dB
indicatedinsteps8through
difference
28.
Both
AC
and
statedinTable
indicated
attenuator
again,
only
between
DC
dynamic
1-1.
is not
R5
and
settingis0
made,itwill
this
time
the
two
modesofoperation.
accuracy
within
R29
within
dB
0.8
until
and
dB
the
0.8
dB
R29
be
necessarytorepeat the
usingatolerance
11.
specifications
of
the
calibrated
difference
of
the
calibrated30dB.
whenat30
limitof±
This
will
shouldbewithin
-30
dB,Itmay
between the0dB
dB.
AC
0.8
dB
insteadofthe
allow
you
to
split
and
Adjust
Adjustment
the
error
the
limits
be
30
R5
UPDATES
5-4
APPLYTOALL SERIALS
HP
85027A/B,/C
DIRECTIONAL
SERIAL
This
manual
directional
follows:
For
additional
to
INSTRUMENTS
Section1and BACKDATING,
HP
HP
HP
applies directly to
bridge
Model
85027A
85027B
85027C
information
NUMBERS
with
serial
COVERED
about
BRIDGE
the
HP
85027A/B/C
numbers prefixed
Serial
serial numbers, refer
Section
2522A
2522A
2522A
BY
MANUAL
7.
Prefix
as
in
MANUAL
Microfiche
PART
Part
NUMBER
Number
85027-90002
©
Copyright
1400
FOUNTAINGROVE
85027-90001
HEwLETr-PAcKARD
PARKWAY,
U.
-
Box
FF0
SANTA
i~-
~
San
FI~r~C~
COMPANY
ROSA,CA95401
-
~
U.S.A.
-
4
F
1985
Printed:
JULY
1985
HEWLETT
PACKARD
HP
85027A/B/C
Table
CONTENTS
of
Contents
Section
GENERAL
Introduction
Specifications
Safety
Instruments
Description
Equipment
Scalar
Swept
Detectors
Power
Equipment
Accessories
Recommended
Warranty
2
INSTALLATION
Introduction
Initial
Preparation
Power
Connecting
Mating
Operating
Storage
Environment
Packaging
3
OPERATION
Introduction
Operating
Connector
Operating
Operator’sCheck
Equipment
Procedure
INFORMATION
Considerations
Covered
Required
NetworkAnalyzer
HP
8757A
HP
8756A
HP
8755C
HP
HP
Signal
8350B
8340A
Source
HP8341A
Splitters
Available
Available
Test Equipment
Restrictions
Inspection
for
Requirements
the
Connectors
Environment
and
Shipment 2-3
Precautions
Wear
Instructions
Page
1-1
1-1
1-1
1-1
by
Manual
1-1
1-3
But
Not
Supplied
1-3
1-3
1-3
1-3
1-4
1-4
1-4
1-4
1-4
1-4
1-4
1-4
1-4
1-5
1-5
2-1
2-1
2-1
Use 2-2
2-2
HP
85027
2-2
2-2
2-3
2-3
2-3
3-1
3-1
3-1
3-1
3-1
3-4
3-4
3-4
1
4
PERFORMANCE
Introduction
Performance
Directivity
Description
Equipment
Procedure
Test
Specifications
Description
Equipment
Procedure
DynamicPower
Specifications
Description
Equipment
Procedure
5
ADJUSTMENTS
Introduction
Adjustment
AC
DC
Feedthru
DC
6
REPLACEABLE
Introduction
Exchange
Replaceable
Organization
Information
Ordering
7
MANUAL
Introduction
Application
8
SERVICE
Introduction
Theory
Troubleshooting
GainingInternal
Cable
Power
Input
Microcircuit
A2
Al
Power
Signal
Clock/Control
Connector
Visual
Mechanical
Test
Below2GHz
Above20Hz
PortMatch
Procedures
Adjustment
Adjustment
Null
Mode
RF
PARTS
Assemblies
Parts
Information
BACKDATING
of
Operation
ContinuityCheck
Cable
Port
and
Check
Circuit
Bridge
Board
Microcircuit
Supply Check
Path
Check
Inspection
Inspection
Inspection
Gaging
Gaging
the
the
HP
85027A/B/C
Table
of
Contents
TESTS 4-I
4-1
Record
4-1
4-1
4-I
4-2
4-2
4..3
4-4
4-7
4-7
4-7
4-8
4-8
Accuracy
(AC
and
DC)
4-9
4-9
4-9
4-10
Procedure
Procedure
Adjustment
Adjustment
Procedure
Check
List
CHANGES
Procedures
Access 8-2
Replacement
Test Port
Assembly
Resistance
Replacement
Assembly
Checks
Replacement
Check
Precision
APC-7
3.5mm
Connector
Connector
4-9
5-1
5-1
5-1
5-2
5-3
5-3
5-4
6-1
6-1
6-1
6-1
6-1
6-1
6-2
7-1
7-1
7-1
8-1
8-1
8-I
8-2
8-2
8-3
8-3
8-3
8-4
8-4
8-5
8-7
8-7
8-7
8-7
8-9
8-9
8-14
11
HP
85027A/B/C
Table
FIGURES
of
Contents
Figure
1-1
1-2
3-1
3-2
3-3
3-4
3-5
Title
HP
85027A
HP
85027A,
HP
85027B
HP
85027
Typical
Typical
Typical
4-I Directivity
4-2
4-3 Signal
4-4
4-5
5-1
5-2
6-lA HP
6-1
6-lC
6-2 A2
6-3 A2
Probable
Test Port
DynamicPower
Adjustment
Locations
85027A
B
HP
85027B
HP
85027C
Circuit
Circuit
Separation
Directional
85027B
with
Connector
BridgeinAccessoryCase
and
Features(Rear
Operator’s
Measurement
Measurement
Check
Setup
Setup
Performance
Range
of
Directivity
Chart
MatchPerformance
Accuracy
Setup
of
Adjustment
Replaceable
Replaceable
Replaceable
Board
Board
Component
Component
85027C
Directional
Saver
View)
Using
Test
Using
Using
Setup
HP
8757A
HP
Power
Values
Test
Setup
Performance
Potentiometers
Parts
Parts
Parts
Identification
identification
Identification
Location
Location
Bridges
8757A
Splitter
Test
Setup
(Component
(Solder
Side)
Supplied
Side)
Page
1-0
1-2
3-2
3-3
3-4
3-6
3-6
4-2
4-3
4-5
4-7
4-9
5-1
5-2
6-5
6-7
6-9
6-1
6-1
1
1
8-1
A2
8-2 A2
8-3
Cleaning
8-4 SMA
8-5
8-6
8-7
8-8
8-9
8-10
8-11
Precision
Zeroing
Measuring Precision
The
Zeroingthe
Gaging
Collet
Circuit Board
Power
Supply
Circuit Board Schematic
APC-7
and
Precision
3.5mm
Precision
Connectors
3.5mm
MaleConnector
3.5mm
Male
3.5mm
APC-7
Connector
APC-7
APC-7
Removal
Gauge
Gauge
Connectors
and
Replacement,
Check
Points 8-5
8-6
8-8
Connectors 8-10
Connector
Male
Gauge
Gauge
Connectors
8-1
8-12
8-13
8-15
8-16
8-17
APC-7
Connectors
8-18
1
111
HP
85027A/B/C
Table
TABLES
of
Contents
Table
I-I
1-2
1-3
1-4
1-5
2-1
4-i Directivity
4-2
4-3
6-1
6-2
6-3A
6-3B
6-3C
6-4 A2
7-1
8-1
Title
Specifications
Supplemental
System
Accessories
Recommended
Contents
Test
DynamicPower
Exchange
Manufacturers
and
HP
HP
HP
Manual
Conductors
Verification
PortMatch Performance
Abbreviations
85027A
85027B
85027C
CircuitBoard
Characteristics
Kits
Available(Adapters and
Test
Equipment
of
HP
85027
Performance
Accuracy
Microcircuit
Code
Replaceable
Replaceable
Replaceable
Backdating
in
Power
Directional
Test
Bridge
List,
Parts
Parts
Parts
Assembly
Changes
Cable
Performance
Reference
General)
Bridges
Record
Test
Record
Assemblies
Designators
Replaceable
By
Serial
Wi
Test
Parts
Number
Record
Prefix
Page
1-6
1-8
1-9
1-9
1-10
2-1
4-6
4-8
4-10
6-2
6-2
6-4
6-6
6-8
6-10
7-1
8-3
iv
HP
85027A/B/C
General
Information
Figure
1-1.
1-IP
85027B
in
Accessory Case
1-0
Supplied
HP
85027A/B/C
General
Information
INTRODUCTION
You
will
find
operatingand service
85027B
shareacommon
85027Binits
bridges.
characteristics,
basic
Youmay
manual
manual changes
SPECiFICATIONS
Table
are
lists
usefulintest
and
85027C
caseisillustrated
The
rest
information.
order
(in
4 x 6
i-I
lists
performance
supplemental
applications.
safety
the
directional
traitor
of
this
inch
supplement
specifications
standards
characteristics,
procedure,
this
section
considerations,
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EQUIPMENT
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HP
85027A/B/C
General Information
phase
provides
RECOMMENDEDTESTEQUIPMENT
Table
bridges.
specifications
WARRANTY
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85027A/B/C
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Frequency
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Table
HP
85027A
0.01-18.0
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HP
85027A/B/C
General
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cable
Weight
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GeneralInformation
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at
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HP85027A HP85027B
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1-8
HP 85027A/B/C
General
Information
Qty
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I APC-7
1
N
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instrument
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10
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ohm
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note
Table
1-3.
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for
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HP
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use
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85027A
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850
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HP
85027C
27B
Kits
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or
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1250-1475
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8492A
92
85023-9000
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opt
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85027-60002
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Table
m
end
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5060-0236
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A
87
10-0877
9300-0791
1-9
HP
85027A/B/C
General
Information
Instrument
Scalar
Network
Analyzer
Sweep
Oscillator
withRFPlug-in
or
Synthesized
Sweeper
Detectors
(2)
Power
Splitter
Power
Power
Meter
Sensor
Table1-5.
Critical
85027
8757A
Specifications
AC/DC
compatible
Frequency:
Frequency:
Frequency:
Frequency:
Frequency:
Frequency:
Frequency:
Frequency:
Frequency:
Frequency:
Connector:
Recommended
compatible
0.01
to
18
0Hz
0.01
to
26.5
0.01
to
20
0Hz
0.01
to
26.5
0.01
to 18
0.01 to
0.01
to
0.01
to
0Hz
26.5
18
0Hz
26.5
0.01to26.5
0.01to18
Type-N
0Hz
(f)
Test
0Hz
0Hz
0Hz
0Hz
0Hz
Equipment
8502
7A
8502
7B
8757A 8757A
8350B
8350B 8350B
with with with
83592A/B
or
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83595A
8341A
8340A
85025A
85025B
1l667A
11667B
436A
848
lB
436A 436A
8502
7C
8757A
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or
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A
85025A
11667A
8481B
10
dB
Step
Attenuator
50
ohm
Fixed
Load
50
ohm
Sliding
Load
Digital
Multimeter
This
equipmentisused
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Connector:
Frequency:
Connector:
0.05to26.5
3.5mm
dcto4
Type-N
Frequency:dcto
Connector:
3.5mm
APC-7
3.5mm
Type-N
APC-7/Type-N,
3.5mm,2to
Accuracy:
Input
Impedance:
for
26.5
±0.01%
performance
0Hz
0Hz
(f)
26.5
0Hz
1.8to18
0Hz
>=
1
OMO
testing,
GHz
adjustment
8485A
8495A
opt
001
8495A
opt 001
8495D
opt
004
909C
909D/040
909C/012
905A
91
IC
905
3456A 3456A 3456A
and
troubleshooting.
A
1-10
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