HP 11665b schematic

OPERATING
AND
SERVICE
MANUAL
116658
..
~,
I
I
JULY
1973
CERTIFICATION
The Hewlett-Packard Company certifies that this instrument was thoroughly
to
meet
tested and inspected and found was shipped from the factory. The Hewlett-Packard Company further certifies that its calibration measurements are traceable to the U.S. National
Bureau
of
Standards
to
the
extent
facility.
its published specifications when it
allowed
by
the Bureau's calibration
WARRANTY
This Hewlett-Packard workmanship. or, in specified period. defective Hewlett-Packard. No liable
Service Hewlett-Packard
For Office.
the
for
any
This
case
of
certain
We
during
consequential
contracts
assistance,
the
products
warranty
or
AND
productiswarranted
applies
major
will
warranty
other
damages.
customer
that
contact
repair
warranty
require
your
components
or
period
assistance agreements
nearest
ASSISTANCE
against
for
one
year
replace
provided
is
expressedorimplied.
maintenance
Hewlett-Packard Sales
defectsinmaterials
from
listedinthe
products
and
the
dateofdelivery,
manual, for
which
they
are
are
repair on-site.
prove returned
We
are
available
and
Service
to
and
the
be
to
not
for
HEWLETT
i:fi
PACKARD
OPERATING
AND
116658
MODULATOR
SERIAL NUMBERS
For
important
bers, see INSTRUMENTS
ALinSection
U
information
1.
SERVICE
concerning COVERED
MANUAL
serial num-
BY MAN-
MANUAL Microfiche,
PART
Part
NO.
No.
11665-90012
Copyright
1501
11665-90011
PAGE
HEWLETT·PACKARD
MILL
ROAD,
PALO
COMPANY
ALTO,
CALIFORNIA,
1973
U.S.A.
Printed:
JULY
1973
TableofContents
CONTENTS
Model
11665B
Section
I GENERAL INFORMATION
Introduction 1-1
1-1.
Instruments Covered by Manual . 1-1
1-5.
Description 1-1
1-9. 1-11.
Options.
but
not
1-13. Equipment Required 1-15. Swept Amplitude Analyzer 1-2 Model 8755A . 1-17. 1-19. 1-21. 1-23. 1-25. Recommended Test
INSTALLATION
II
2-1. 2-3. 2-5.
2-6. 2-8. 2-10. 2-12. 2-16. Storage and 2-17. 2-19.
Oscilloscope Directional Couplers 1-4 4-14. Performance Tests Detector 1-4 Sweep Oscillator .
Equipment
Introduction 2-1 Initial Inspection . Preparation for Use 2-1
Selecting RF Using APC-7 RF Connectors 2-1 Mating Connectors Operating Environment 2-2
Environment 2-2 Packaging
Input
Shipment
Supplied.
Connector
Page
1-1
1-2
1-2 4-12. Insertion Loss Measured with
1-4
1-4 1-4
2-1
2-1
2-1
2-1
2-2
2-2
Section
UseofaDCCurrent-Limited
4-7.
Power Supply in Place Modulation Source 4-1
4-11. Return Loss
Model 8755A . 4-2
4-13. Modulator Drive
Using the Model 8755A
4-16.
Return
without
4-17. Insertion Loss Measured
without
V ADJUSTMENTS .
VI REPLACEABLE PARTS
Introduction
6-1.
Abbreviations .
6-3.
Replaceable Parts List
6-5.
Ordering Instructions
6-7.
VII MANUAL CHANGES·
Introduction
7-1.
of
a
Measured with
Feedthru
without
Loss Measured
Model 8755A 4-4
Model 8755A
.
Page
4-2 4-2
4-3
4-4
5-1
6-1 6-1 6-1 6-1 6-1
7-1 7-1
OPERATION.
III
Introduction
3-1.
Features
3-3.
Operator's Check With
3-5.
Operating Instructions .
3-7.
Operator's Check Using
3-9.
Other than 8755A
PERFORMANCE TESTS
IV
Introduction
4-1.
Equipment Required
4-3.
Test Record
4-5.
8755A
3-1 3-1 3-1 3-1 3-1
3-1
4-1 in APC-7 Connectors 4-1 8-16. 4-1 8-19. Troubleshooting Procedures 4-1 8-22. Principles
VIII SERVICE
Introduction
8-1.
Principles
8-3.
Troubleshooting
8-5.
Recommended Test Equipment
8-7.
Repair
8-9. 8-11. 8-14.
BNC
of
Operation .
Connector Replacement Replacing Center
Connector Replacement.
of
Operation .
Conductor
8-1 8-1 8-1 8-1 8-1 8-1 8-1
Contact
8-2 8-2 8-3 8-4
ii
Model
11665B
TableofContents
ILLUSTRATIONS
Figure 1-1.
, Model 11665B Equipment Supplied
UseofAPC-7
2-1. 3-1. Model 11665B Modulator 3-2. Model 8755A Typical Measurement Setup 3-3. Operator's Check Using Other Than 8755A
Table 1-1.
Specifications. 1-2. Supplemental Characteristics . 1-3. Recommended Test Equipment 4-1. Performance Record
Connectors.
. . . . .
. . .
Features.
Page
1-1 2-1
3-1
3-2
3-2
TABLES
Page
1-2 1-3 1-4 4-5
Figure
of
3-4. Typical Waveform 4-1. Modulator Drive Feedthru Test Setup 6-1. RF Connectors Replaceable Parts 8-1. Model 11665B Connectors
8-2. Model 11665B Modulator Schematic
Table 6-1. Reference Designators and
Abbreviations.
6-2. Replaceable Parts List . .
of
6-3. Code List
Manufacturers
Modulation
.
Page
3-3 4-3
6-4
8-2 8-4
Page
6-1 6-2
6-3
iii
Model
11665B
General
Information
1-1. INTRODUCTION
1-2. This information Modulator.
manual
for
the
The
contains
Hewlett-Packard
Model
11665Bisshown
1-1.
1-3.
On
the
front
coverofthis manual ber. This microfilm fiche Changes Notes.
1-4. 1-1. These specifications are or tested. Supplemental but tional
part
number
transparenciesofthe
package
supplement
Instrument
limits
against
Table 1-2 lists
are
typical
information
number,
characteristics are
is a
may
be
also includes
as well as all
specifications are listedinTable
which
supplemental
characteristics
for
the
G,ENERAL
operating
Model
manual,
"Microfiche"
usedtoorder
manual. the
latest
pertinent
performance
the
instrument
characteristics.
not
included
user.
SECTION
and
service
11665B
in Figure
below
part
The
specifications
the
num-
4x6-inch
micro-
Manual
Service
standards
may
be
as addi-
I
INFORMATION
included factured changes manual yellow "change ences.
1-7. mental in
the accurate that Changes manualiskeyed part page. available
1-8. not contact
with
after
which
for
this
Manual Changes
information"
In
additiontochange
contains
manual.
as possible,
you
periodically
supplement.
number,
Complimentary
from
For
information
listed
your
in
nearest
the
manual.
the
printingofthis
do
not
instrument
information
To
keep
Hewlett-Packard
to
this
both
of
copiesofthe
Hewlett-Packard.
the
Manual Changes
Hewlett-Packard
An
appearinthe
supplement
that
documents
information,
this
manualascurrent
request The
manual's
which
concerning
instrument
manual
manual.
is
supplied
that
for
correcting
recommends
the
latest
supplement
print
appear
supplement
a serial
supplement,
office.
may
the
the
on
manu-
have
The
with
contains
differ-
supple-
errors
and
Manual
for
this
date
and
the
title
number
a
are
1-5. INSTRUMENTS COVERED BY
1-6. This unless a
manual
yellow
applies
Manual Changes
directlytoall
MANUAL
instruments
supplement
1-9. DESCRIPTION
1-10.
is
for
The
square
Model
wave
11665B
modulationoffrequencies
Modulator
is designed
between
Figure 1-1.
Model
11665B
Equipment
Supplied
1-1
General
15 100
Information
MHz
and18GHz.
kHz
may
non-reflective
limits.
1-11. OPTIONS
1-12.
The
following
the
Model
11665B.
Option
011 013 021 022 023
50
Modulation
be
used.
ohm
load
connectors
frequenciesupto
The
Modulator
when
used
are available
Input
N-Jack N-Jack APC-7 N-Plug N-Jack N-Plug N-Plug N-Plug APC-7
within
Output
N-Jack
is a
these
for
imately tion filter HP Model the
OUT
with the
If
modulation imately
100
feedthrough
Model
port
and
2.
If
the
Model
Model
.the
8755A
Modulator
50
MHz,
11668A
11668A
the
the
Model
8755A
source
rnA
of
or
at
may
beaproblem,
between
test
setup.
11665B
Swept
furnishes
is used .alone, a squarewave
which
current negative voltage polarities the
squarewave 11665B this
DRIVE
manual requirements
modulation
for
further
of
port.
the
Refer
information
source.
Model
~
time
where
shouldbeused.
the
Model
Modulatorisused
Amplitude
the
modulation
can
furnish
in
both
positive
must
be
used.
source
to
to
paragraph 4-8 in
concerning
squarewave
modulation
11665B
modula-
a high-pass
Connect
11665B
Analyzer,
signal.
approx-
and
Connect
tne
Model
the
1-13; EQUIPMENT REQUIRED BUT
PLIED
To
use
the
1-14.
Model
11665B,
equipmentisrequired:
1.
If
the
11665Bisto
devices which amplify frequencies
be
usedtotest
below
FREQUENCY
Range:15MHzto18 GHz.
IMPEDANCE
Mainline Return Loss:
NOTE: APC·7 connectors typically have
Input
and
Output
(ON
to
.015 .04 4 8to18
.04 GHz:~10dB(,,;;
to
4 GHz:
to
8 GHz: ~ 12dB(,,;;
GHz:
return loss from
or OFF Condition)
~
~
Impedance:
15 dB
8dB(,,;;
12A
1.92 SWR)
(,,;;
1.43 SWR)
1.67 SWR) '
2.32 SWR)
to18GHz.
TRANSMISSION
Insertion Loss: Frequency (GHz)
.015
to
.04
.04
to
4
4to8
8
to
12A
12A
to
18
ON
Condition
,,;;
7.0
,,;;
3.2 dB ,,;; ,,;;
4.3 ,,;;
5.0
dB
3.8 dB dB dB
OFF
1-15.
NOT
SUP-
1-16. lyzer
the
following
11665B
-50 over a
active
approx-
Model Oscilloscopes.
Table 1-1. Specifications
SPECIFICATIONS
50Q
nominal.
..
~
10 dB
Condition
~35dB
~35dB
~40dB
~45dB
~45dB
SWEPT
The
with
to
frequency
8755A
AMPLITUDE
Model
three
Modulator
+10
dBm
plugs
8755A
11664A
measures
and
amplitude
rangeof15
into
ANALYZER
Swept
Detectors
amplitude
MHzto18
the
Model 180-series
Amplitude
and
ratiosof60
POWER
Modulator Drive Feedthru:
27.8 kHz from either input or RF
Maximum
Input: +24 dBm.
*,,;;
8 mV (peak) at
output
ports.
GENERAL
Connectors: Standard, N.Jack InputjN-Plug
Output
N.Jack APC-7 N.Jack N.Plug APC·7
NOTE:
Weight:
Option
011 013 021 022 023
"Jack" fixed threads; "plug" male connector has coupling nut.
Net,6
identifies the female connector with
oz. (0,17).
Input N.Jack N.Jack
N·Plug
N.Plug
N.Plug
the
Model
levels
GHz.
Output
Ana-
of
dB
The
1-2
*
When
Model
11665B
Modulatorisdriven
fromaModel
8755A
Model1l665B
Table 1-2. Supplemental Characteristics
FREQUENCY
General
Information
Harmonic Generation: Above 1 GHz,
1 GHz,
Drive Current:
typically
Nominally
30
dB
below
+50
IMPEDANCE
input
rnAinON
~
/ \
dB
4
z
a
I-
Cl
8
Z .01 .02 .04
a
u
z
a
10
dB
15
20
25
30
/
/
/
\
""-
r-........
.01 .02 .04
typically
powerof+10
condition,
INSERTION
I----
.10
.20.50
Frequency
RETURN
.08.10
.20 .40
INSERTION
40
LIMITS
TYPI
dB
dBm.
-50
LOSS.
TYPICAL
LIMITS
IGHz)
LOSS
CAL
.80
LOSS
below
input
rnAinOFF
~'"
V
1.0 2.0 4.0
.-
-
1.0
2.0 4.0 8.0
powerof+10
condition.
......-
""""
'---
-
8.012.018.0
f--
-
,.......-
/
/
12.018.0
dBm.
Below
I
10
20
dB
30
40
z
50
a
00
I-
.01
Cl
Z
a
u
u.
u.
a
10
dB
15
20
25
30
.01 .02 .04
--..
r---...
-
8.0 12.0 18.0
.08.10
.04.02
.20 .40
RETURN
LOSS
.80
1.0
\
\
---...
f---./
-
.08.10
L1~ITS
TYPI
.20 .40
..I--
CAL
.801.0
4.02.0
f--
f--
I-----
./
2.0 4.0 8.0 12.018.0
V
fJ
1-3
General
1-17.
1-18.
lyzer
Oscilloscope.
indicator
1-19. Directional Couplers
1-20. nals, Model
or dual frequency frequency
1-21. Detector
1-22. when
Information
Osci
The must
and
To
directional
8755A.
two
single
directional
Three
using
lIoscope
Model
be
The
8755A
plugged
Model
power
separate
the
couplers
Either
directional
coupler
of
the
measurementislimited
rangeofthe
Model the
11664A
Model
supply
incident
one
directional
Swept
into
a Model 180-series
180
acts
for
the
are usually
dual
directional couplers can
be
Detectors
8755A
Amplitude
as a display
Model
and
reflected
used
connected
used.
coupler.
Swept
Ana-
8755A.
sig-
with
the
coupler
as a
The
sweep
by
the
are
needed
Amplitude
Analyzer.
kHz
1-23. Sweep Oscillator
1-24.
RF
input
or
Model 8690-series Sweep Oscillators
These
modulation
Sweep
Oscillators are
signal.
detectors
signal
from
Either
demodulate
the
neededtofurnish
the
HP Model 8620-series
used.
1-25.
1-26. This troubleshooting ment cations under
RECOMMENDED
Table
1-3 lists
equipment
may
be
equal
recommended
is usedinperformance
the
Model
substituted,
or
exceed
Critical Specifications.
TEST
EQUIPMENT
11665B.
provided
the
specifications given
Model
RF
test
Other
11665B
the
Input
signal.
may
equipment.
testing,
equip-
its
specifi-
28.7
the
be
and
Table 1-3.
Instrument Critical
Specifications
Sweep
Type
Oscillator
Frequency: Modulation:
quency
compatible
Meter.
Swept
Amplitude
Analyzer
Provides
signal.
Powers Processes
27.8
three
and
detected
BNC
Tee
2 female BNC, 1 male BNC
connectors.
Modulator
Frequency:
Modulation:
Recommended
100
MHzto18
Test
Equipment(1of
GHz HP Model
squarewave, fre- HP Model
with
SWR
86330A+86320A 86341B 86342A 86350A
HP Model
86260A
kHz
modulation
11664A
displays
Detectors.
the
HP
signals.
HP
(UG-274AjU)
100
MHzto18
27.8
kHz
GHz
HP
Suggested
(3.2to6.5 (5.9to9 GHz) (8.0to12.4
(12.4to18
8755A
Part
No.
11665B
8620
mainframe
8621A
8620
mainframe
1250-0781
2)
Model
with
and:
(0.1to4.2 GHz)
GHz)
GHz)
with:
GHz)
Use*
P,T
P,T
P,T
P,T
Dual
Low-Pass
1-4
Directional
Filter
Frequency:
100 Coupling:20dB Directivity:
Frequency:
;;;;.40dB
Reduces
monicoffrequency interest;;;;.50dB
MHzto18
2nd
band
GHz
HP HP
har- HP
of
HP HP HP
778D
(110
MHzto2 GHz)
11692D(2to18GHz)
360A
(700
MHz
cutoff)
360B
(1.2
GHz
cutoff)
360C
(2.2
GHz
cutoff)
360D
(4.1 GHz
cutoff)
P,T
P,T
Model
11665B
General
Information
Instrument,
Type
Detectors
Oscilloscope
DC
Current-
Limited
Power
Supply
Audio
Oscillator
Open-End
Wrench
(3)
Table 1-3.
,
Frequency:
Vertical
Voltage: Current:
50
milliamperes
Frequency:to27.8 Output:to15
Thin
1/2x9/16-inch
Recommended
,
Critical
Specifications
100
MHzto18
Bandwidth:~250
adjustable canbelimited
to±15V
to
kHz
Vrms
wrench
GHz
kHz
Test
Equipment(2of
HP
11664A
HP
182A/1801A/1820C
HP
721A
HP
200A/B
HP
Part
2)
Suggested Model Use*
P,T
P,T
P,T
T
No.
8710-0877
Chng.
Conn.
*P =
Performance
Testing,
T =
Troubleshooting
1-5/1-6
Model 11665B
Installation
2-1.
INTRODUCTION
2-2. This initial connectors,
2-3.
2-4. terial contents completeness mechanically shipment Procedures given or
defect, electrical well as shipping HP without
inspection,
INITIAL
If
the
is
in
Section
materials
office
waiting
section
damaged, of
should
orifthe
performance
the
will arrange
contains
preparation
storage,
shipping
the
and and
for
and
INSPECTION
it
shipment
the electrically.
be
checking
IV.Ifthereismechanical
Hewlett-Packard
for
for
claim
information
shipment.
container
should
have
instrument
as
shown
electrical
instrument
test,
notify
the
carrier's
for
repair
settlement.
for
use,
of
cushioning
be
kept
been
checked
has
been
The
contentsofthe in
Figure 1-1.
performance
does
not
the
office.
inspection.
or
replacement
SECTION
INSTALLATION
2-5. PREPARATION FOR
concerning
mating
ma-
until
the
for
checked
are
damage
pass
the
carrier as
Keep
the
The
2-6. Selecting RF
2-7. conductor changing done wrench. manual,
2-8. Using APC-7 RF Connectors
2-9. nectors. attemptingtouse APC-7
2-10. Mating Connectors
2-11. nectors TypeNconnectors
II
The
RF
assembly
the
by
the
Refer
paragraph
Figure
Read
Connectors
on
Connector
type
operator
2-1
the
the
instrument
USE
Input
Connector
outer
may
be
replaced,
of
RF
connector.
using a
to
the
Service
8-13,
for
details.
shows
instructionsofthis
which
connectors.
whose
the
use
mate
with
are
the
dimensions
shell
and
thereby
This
can
thin
open-end
section
of
corresponding
of
APC-7 con-
figure
Type
N con-
conform
inner
be
this
before
to
To Connect:
1.
On
one sleevebyturning clockwise
2.
On
the
other coupling clockwise. coupling tracted, turningitclockwise.
3.
Push thread with sleeve
Do
4. since connection.
sleeve
press
the
the
retracted
NOT
this
connector,
the
until
the
connector,
by
To
engage
nut
when
back
connectors
coupling
sleeve
tighten
will
tend
retract coupling
sleeve
turning
coupling
the
lightlyonthe
firmly
nut
over
the
other
to
loosen
the
and
nut
fully
the
sleeve is fully re-
together,
of
the
the
coupling
Figure 2-1.
coupling
nut
counter-
disengage.
extend
coupling
sleeve
nut
connector
extended
the
electrical
To Disconnect:
1.
Loosen showing
the nut and
while
and
nut
2.
IMPORTANT: fullytoprevent contact.
UseofAPC-7 Connectors
the
the
coupling wider
gold
Part
striking
nut
band.
the
the
of
the
connector
connectors
inner
conduct(
car~
r
2-1
Installation
Model1l665B
US military specification MIL-C-39012. Con­nectors another
2-12. Operating Environment
2-13. Temperature.
atedintemperatures
2-14. Humidity.
in ever, temperature within
2-15. Altitude.
altitudesupto
2-16. STORAGE
2-17. Environment
which
APC-7
Frequency dB/lOoC
from
temperature
environments
the
instrument
extremes
the
instrument.
mate
with
connector.
The
from
NOTE
response
20°
goes
up.
The
instrument
with
humidity
should
The
instrument
25,000
feet.
AND
APC-7
instrument
-25°C
drops
to
55°C
up
alsobeprotected
which
cause
maybeoperated
SHIPMENT
connectors
may
to
+55°C.
off
as
operating
may
be
to
95%. How-
condensation
are
be
oper-
0.03
operated
from
at
The
instrument temperature within
2-19. 2-20. Original
identical available
the
instrument.
Packaging
to
through instrument for
servicing,
service
and
required,
full serial FRAGILE correspondence, number
2-21. Other
structions
and
should
commercially
a. Wrap
should
extremes
Packaging.
those
used
Hewlett-Packard offices.Ifthe
is being
returned.
attachatag
return
number.
to
assure careful handling. In
refertothe
full serial
Packaging.
be
available materials:
the
instrument plastic.Ifshippingtoa service service and
wall
center,
required,
full serial
b.
Use a
carton
attachatag
return
number.
strong
made
of
shipping
adequate.
also be
which
cause
Containers
in
factory
to
indicating
address,
Also,
mark
instrument
number.
The
following general in-
used
for
re-packaging
in
Hewlett-Packard
indicating
address,
container.Adouble-
350-pound
protected
from
condensation
and
materials
packaging
are
Hewlett-Packard
the
type
of
model
the
number,
container
any
by
model
with
heavy
model
test
paper
office
the
type
number,
material
or or of
is
2-18.
The
instrument
environments
Temperature: Humidity: Altitude:
within
maybestoredorshipped
the
following limits:
. .
O°Cto+75°C
....
Upto95%
Upto25,000
in
feet
to
4-inch
to
provide
inside
c. Use
layer)
the
container.
d.
Seal
enough
around
firm
the
shock-absorbing
all sidesofthe
cushion
shipping
and
container
prevent
securely.
material
instrument
movement
(3-
2-2
Model
11665B
Operation
3-1. INTRODUCTION
3-2. This operationofthe
section
contains
Model
instructions
11665B
concerning
Detector.
3-3. FEATURES
3-4.
Features
Figure 3-1.
of
the
Model
11665B
are
3-5. OPERATOR'S CHECK WITH 8755A
3-6.
An cluded 8755A for
the
An
additional
given in
Operator's
in
the
given in
Model
check,
paragraph
Check
Operator's
the
Operating
8755A
Swept
not
3-9.
of
Check
Amplitude
using
the
11665B
for
the
and
Service Manual
the
Model
3-7. OPERATING INSTRUCTIONS
3-8. ating Swept using
Operating
and
Amplitude
the
Model
instructions
Service Manual
Analyzer. A
8755AisshowninFigure 3-2:
are giveninthe
for
the
typical
Model
SECTION OPERATION
shown
Analyzer.
8755A
test
IS
In-
Model
Oper-
8755A
setup
in
is
III
Do
not
apply Powerormore into
the
11664A.Ifmore
or
voltage is
damaged.
3-9.
OPERATOR'S CHECK USING OTHER
THAN 8755A
3-10.
If
a
Hewlett-Packard Amplitude Model testedinits particularly under tional crystal the
output load. than Connect crystal
Analyzerisnot
11665B
normal
useful because actual equipment-needed
detector.
of
Use
an
the
rated
the
detector.
more
than±10
applied,
Modulator,
operating
operating
Connect
the
setup
attenuator
input
oscilloscope
See Figure 3-3
than
+15
voltsdcvoltage
than
the
11664A
Model
available
the
Modulator
setup.
it
tests
conditions.
is
an
oscilloscope
the
crystal
in
place
if
the
of
the
to
the
foratypical
dBm
this
8755A
for
The
of
output
crystal
output
power
may
testing
This
the
only
detector
the
is
detector.
RF
be
Swept
the
may
be
check
11665B
addi-
and
normal
greater
of
the
setup.
is
a
to
o
RF
is
Modulation nector signal
Input
applied
(upto100
Connector.
to
Connector.
which
this
will
kHz).
The
connector
A BNC
accept
Figure 3-1.
RF
the
input
signal
type
con-
modulating
Model
11665B
RF signal
Output
appears
Connector.
at
this
The
connector.
NOTE
TypeNconnectors have
dimensions
giveninUS specifications MIL-C-39012A.
usedonthe
which
conformtothose
Modulator Features
modulated
11665B
RF
3-1
Operation
Model1l665B
Look
Figure 3-4 shows a from vary of and
volts are
normal the
at
one
complete
the
sinewave
from
this
waveform
modulation
used.
diode-biasing voltage
normal.
foraparticular
cycle
typical
waveform
modulation.
depending
The
rounded
"wiggle"
The
exact
application
application.
HP
8620OR8690
SWEEP
OSCI
LLATOR
tI:-··
..
·n:·~
..
·:'tFrF::::~:~:::;:~:JC;:1
o t ! t 0
OO~
c:::»O
= INPUT
SWEEP
OUT OUTPUT
~
c::30 0
RF
LOW-PASS
FILTER
Z-AXIS
on
the
The
waveform
HP
11665A/B
MODULATOR
'-r..------'
IN
DRIVE
oscilloscope.
which
waveform
upon
the
risetime
around
which
will vary
OUT
results
may
type
curve
zero
with
is
~,~
DUALDIRECTI
U U
It
is
recommended performed thatanormal
be
noted.
envelope
The
will vary application, cover
all
applications
HP
11664A
DETECTOR
ONAL
COUPLER
on
the
modulation
permissible
so
no
DEVICE
UNDER
TEST
NOTE
that
Modulator
with
description
can.begiven
HP
SWEPT
Z-AXIS
INPUT
OSCI
OJ
HP
11664A
DETECTOR
8
this
test
initially so
envelope
variationinthe
the
particular
which
here.
8755A/182A
AMPLITUDE
ANALYZER!"
LLOSCOPE
EXT
~DI~D
aOOD
DODD
a
aoa
0 (aooa
Q
8
A JR
MODULATIDN DRIVE
27.8 KHz
be
will
will
3-2
AUDIO
OSCILLATOR
Figure 3-2. Model
SWE~2SCILLATOR
'q
...
,"""
....
".,,':.)
'O~690
aGC'
E:::I
CfOO
0
0
E:::IOO
RF
OUTPUT
l00MHz
TO18GHz
8755A
HP
,UNDER
IN OUT
DRIVE
Typical Measurement
11665B
TEST
Figure 3-3. Operator's Check Using
MODULATOR
Other
Than
Setup
CRYSTAL DETECTOR
8755A
Model
11665B
Figure 3-4. Typical WaveformofModulation
Operation/Performance
Tests
PERFORMANCE
4-1. INTRODUCTION
4-2.
The
proceduresinthis ment's tionsofTable simpler under
electrical
operational
Operator's
performance
1-1 as
the
testisincludedinSection
Check.
4-3. EQUIPMENT REQUIRED
4-4.
Equipment is listed tableinSectionI.Any critical specifications given substituted
in
required
the
Recommended
for
the
recommended
4-5. TEST RECORD
4-6. Results tabulated procedures. specifications results for troubleshooting
4-7.
recordedatincoming
comparison
USE
of
the
on
the
The
Test
and
and
OFADC
Test
Record
their
in
after
CURRENT-LIMITED SUPPLY IN PLACE OF A MODULATION SOURCE
4-8.
Some
DC
Current-Limited modulation specifications condition 11665B
of
the
following
Power
signal. This is necessary
in
of
either
which
the
call
11665B.
the
section
using
performance
for
the
performance
equipment
in
the
performance
Recordatthe
lists allofthe
acceptable
inspection
periodic
repairs.
for
ON
maintenance
tests
Supply
either
In
order
or
OFF
test
the
standards.
Test
that
table
model.
tests
limits.
call
in
when
the
to
condition
SECTION
the
instru-
specifica-
III
tests
Equipment
satisfies
end
canbeused
for
place
ONorOFF
may
may
of
tested
Test
and
POWER
using a
of
testing
hold
the
be
be
the
the
50
IV
TESTS
milliamperes positive voltage is ON;ifnegative voltageissupplied,
be
OFF.
A
a
protected
safe
current However, less the
11665B
Always voltage slowly. voltage 11665B shoot and
4-9.
To Limited limit
to
crease
4-10. used, a used. resistor is
the
Always voltage slowly. voltage 11665B shoot and
If
Fora10
of
current
supplied,
In
either
against
either
supply
if
off.
supply
Supply
approximately
voltage slowly.
supply
if
off.
a
non-current
current
adequate.
condition
too
is
approximately
than
ONorOFF
on
and
may
result
the
supplyismerely
these
may
on
and
may
result
the
supplyismerely
limiting
volt
supply,
must
much
25
milliamperes will
power
Do
not
off. Damage
from
voltages a DC Current-
be
used.
55
power
Do
not
off.
from
limited
series resistor
a series
be
the
11665B
the
the
11665B
current.
by
milliamperes
by
Damage·
The
100
adequately.
increasing
just
switch
voltage over-
turned
Set
the
increasing
just
switch
voltage over-
turned
supply
180
supplied.
11665B
milliamperes.
to
over-current
to
ohm1watt
will
be
will
must
be
maximum
not
turn
the the the
on
and
in-
the the the
on
must
should
be be
3-3/4-1
If
Performance
Tests
PERFORMANCE TESTS
Model
11665B
4-11. RETURN
LOSS
SPECIFICATION:
Return
(Model
0.1 4 8
Loss 8755A
to
4 GHz:
to
8 GHz:
to18GHz:
(ONorOFF
will ;;;"15
;;;"12
;;;"8
DESCRIPTION:
This
test
will
not
and
Service Manual
or
off
while being
Refertothe
Operating
4-12. INSERTION
SPECIFICATION:
Insertion
Loss:
MEASURED WITH MODEL
Condition)
test
dB
dB
(~1.67
dB
(~2.32
be
shown for tested.
LOSS
onlyto0.1
(~1.43
here
the
8755A.
Refer
and
Service Manual
MEASURED WITH MODEL 8755A
SWR) SWR) SWR)
GHz)
since
In
this
to
paragraphs 4-7
8755A
it
is a
case
for
standard
the
the
device
through
8755A
return
under
for
loss (reflection)
testisan
11665B,
4-10inthis
testing
information.
test
manual
showninthe
which
mustbebiased
for
biasing instructions.
Operating
on
Frequency (GHz)
(Model
test
only
0.1
4
8
8755A
to
to
to 0.1 GHz)
to
4
8
12.4
12.4to18
DESCRIPTION:
This
test
will
not
Operating
be
biased
instructions.
and
Service Manual
onoroff
Refertothe
4-13. MODULATOR
SPECIFICATION:
~
8 mV
peakat27.8
will
be
shown
while being
Operating
DRIVE
kHz
from
here
sinceitis a
for
the
8755A.
tested.
Refer
and
Service Manual
FEEDTHRU *
either
inputoroutput
ON
Condition
~
3.2
~
3.8
~
4.3
~
5.0
standard
In
this
to
paragraphs 4-7
connector.
dB
dB
dB dB
case
for
insertion
the
device
the
8755A
OF
loss (transmission)
under
through
for
testisan
4-10inthis
testing
information.
F Condition
;;;.,35dB ;;;.,40dB ;;;.,45dB ;;;.,
45dB
test
showninthe
11665B,
manual
which
for
must
biasing
*
4-2
When
modulatedbya
Model
8755A.
Model
11665B
PERFORMANCE TESTS
4-13. MODULATOR DRIVE FEEDTHRU (Cont'd)
DESCRIPTIbN:
The
11665Bisconnectedtothe
OUT
connectors.
Model
8755A
and
the
feedthru
voltage is
measured
Performance
on
both
the
IN
Tests
and
EQUIPMENT:
PROCEDURE:
,---------------,
,
~__
HP
_
MODULATOR
11665B
Figure 4-1. Modulation Drive Feedthru Test
Modulator
Swept
Amplitude
Oscilloscope
Tee
BNC
OUT
Analyzer
OSCI
-1]0
: 0
: °
(,
° ° o@o
@ 0
@@_2:
00
VERT
INPUT
I
I
27.8 KHz
MODULATION
Oscilloscope
LLOSCOPE
0
_
SYNC
-----------E1IBNCTEE
SIGNAL
.
(1802isused
HP
Part
Setup
· HP
· . .
..
· HP
182Aj1802Aj1820C
with
No.
1250-0781
SWEPT
AMPLITUDE
ANALYZER
DODODcaDC
aD
co I DODa
o
000
HP
3755Aj180'
inputs
cascaded)
(UG-274A/U)
MODULATOR DRIVE
11665B
1.
Connect of inputisto
2. Measure
3.
Connect
4. Measure
the
the
equipmentasshowninFigure
11665B
the
the
the
under
CHANNEL
peak
test.
A).
voltageofthe
Oscilloscopetothe
peak
voltageofthe
Set
1802A
27.8
kHz signal.
opposite
27.8
kHz signal.
for
maximum
11665A
4-1
with
the cascaded
This
voltage
connector
This
voltage
Oscilloscope
gain (DISPLAY B, SYNC
should
(IN
connector).
should
4-14. PERFORMANCE TESTS WITHOUT USING THE MODEL 8755A
4-15.
8755A
specified
The
Swept
following
Amplitude
only
when
tests
will
Analyzer.
drivenbythe
test
8755A.
the
Note
Model
that
11665B
thereisno
Modulator
test
performance
for
Modulation
connectedtothe
be~8 mV.
be~8 mV.
without
Drive
OUT
terminal
SOURCEAif
using
the
Model
Feedthru,asthis
is
4-3
Performance
Tests
PERFORMANCE TESTS
Model
11665B
4-16. RETURN
SPECIFICATION:
Return
.015to.04 GHz: .04to0.11 GHz: (Model
DESCRIPTION:
This and or Refertothe
4-17. INSERTION
SPECIFICATION:
Insertion
Loss
8407
test
will
Service Manual
off
while being
Loss:
Frequency (GHz)
(Model
test
LOSS
(ONorOFF
A will
not
Operating
8407A
only
to 0.11 GHz)
MEASURED WITHOUT MODEL 8755A
Condition)
;;;;.10dB«1.92 ;;;;.15dB«1.43
test
onlyto0.11
be
shown
for
the
8407A.In
tested.
LOSS
Refer
and
Service Manual
MEASURED
will
here
SWR) SWR)
GHz)
sinceitis a
this
case
to
paragraphs 4-7
for
WITHOUT
standard
the
device
the
8407Afor
MODEL 8755A
ON
Condition
return
under
through
loss (reflection)
testisan
4-10 in
testing
11665B,
this
information.
test
manual
showninthe
which
OF
must
for
biasing instructions.
F Condition
Operating
be biased
on
.015to.04 .04to0.11
DESCRIPTION:
This
test
will
Operating be biased instructions.
and on
or
Refertothe
not
be
shown
Service Manual
off
while being
Operating
here
for
the
tested.
< 7.0 dB
< 3.2 dB
sinceitis a
8407A.In
Refertoparagraphs 4-7
and
Service Manual
standard
this case
insertion-loss (transmission)
the
for
device
the
8407Afor
under
through
testisan
4-10inthis
testing
;;;;.35dB ;;;;.35dB
test
11665B,
manual
information.
showninthe
which
for
must
biasing
4-4
Model
11665B
Performance
Tests
Hewlett-Packard Model
11665B Modulator Serial No.
Paragraph
Number
4-11.
Return
Model
4-12. Insertion
with Model
Table 4-1. Performance
Test Min.
Loss
Measured with
8755A
(.015to.04
to
(.04
to
8 GHz)
(4
to18GHz)
(8
Loss
ON
CONDITION
GHz)
4 GHz)
Measurement
8755A
(.015to.04 GHz) (.04to4 GHz) (4to8 GHz)
to
12.4
(8 (12.4to18
GHz)
GHz)
Tested
Date
Record
by
;;;.10dB ;;;.15dB ;;;.12dB
;;;.
8 dB
Actual Max.
~
7.0 dB
~
3.2
c.B
~
3.8
dB
~
4.3
dB
~
5.0 dB
4-13.
4-16.
4-17.
OFF
CONDITION
(0.1to2 GHz)
to
8 GHz)
(2
(8to
18
GHz)
Modulator Drive Frequency
Loss
Return without Model
(.015to.04 (.04 (4 (8
Insertion
withouth
ON
(.015to.04
Measured
8755A
to
4 GHz)
to
8 GHz)
to
18
GHz)
Loss
Measurement
8755A
CONDITION
GHz)
GHz)
(.04to4 GHz)
to
8 GHz)
(4
to
12.4
(8 (12.4to18
OFF
GHz)
GHz)
CONDITION
(.015to4 GHz) .
to
8 GHz)
(4
to18GHz)
(8
;;;.35dB ;;;.40dB ;;;.
45dB
;;;.10dB ;;;.15dB ;;;.12dB
;;;.
8 dB
;;;.35dB ;;;.40dB ;;;.45dB
~
~
~
~
~
~
8
mV
7.0 dB
3.2
dB
3.8
dB
4.3
dB
5.0 dB
r
peak
4-5/4-6
Adjustments
/Replaceable
Parts
Model
11665B
5-1.
The
Hewlett-Packard Model
6-1.
INTRODUCTION
6-2. This
section
contains
information
11665B
parts. Table 6-1 lists abbreviations.
all replaceable
Other able
parts
due
assembly. Table 6-3
dresses
that numbers. cation the are Part
drawing for fixed cemented
No.
partsinreference
are
not
considered
to
the
special
correspondtothe
fixtures
contains
the
manufacturer's
Figure 6-1isa replaceable
the
RF
Connectors.
partsofthe
together
center
with
conductor
"Loctite"
0470-0013.
designation customer
SECTION
ADJUSTMENTS
Modulator
hasnoadjustmentsorfactory
SECTION
REPLACEABLE
6-5. REPLACEABLE PARTS LIST
for
ordering
Table
necessary
names
parts
Note
assemblies
cement,
6-2 lists
order.
replace-
for
and
ad-
code
identifi-
that
HP
6-6. Table 6-2 is organized as follows:
by
five-digit
6-7.
V
VI
PARTS
a. Replaceable
reference
b.
c.
ORDERING
designation.
Typical
code.
Manufacturer
selected
the
listofreplaceable
partsinalpha-numeric
manufacturer
code
of
number
INSTRUCTIONS
components.
parts
and
order
the
part
for
the
in
part.
is
a
6-3. ABBREVIATIONS
6-4. Table 6-1 gives a listofabbreviations
the
parts
manual.
viation
partial abbreviationinthe However,
manual,
both
lower
list, schematics
In
some
are given,
or
no
capitals.
in
the
schematics
other
abbreviation
case
and
cases,
one
parts
capital
and
throughout
two
all
This
forms
capital
occurs
of
letters,
because
the
list are always all capitals.
and
other
partsofthe
forms
are used
letters.
Table 6-1. Reference Designators and.Abbreviations
REFERENCE DESIGNATORS
A
C
CONN F FXD G
........
. . . . .
..
assembly
capacitor
connector
farads
fixed
giga=10
CR
J
H Hz K . .
9
LOG
. . . . . .
.....
. . .
logarithmic
6-8. table,
used
in
the
indicate to
abbre-
and
one
the
6-9. replaceable
model
description
with
numberofparts nearest
..
diode
jack
L
P......
ABBREVIATIONS
henries
..
Herta
kilo=1000
taper
M MEG MFR MHz
To
orderapart
quote
quantity
the
nearest
To
order
number,
Hewlett-Packard
..
milli ... .
manufacturer
mega
listedinthe
the
Hewlett-Packard
required,
Hewlett-Packard
a
part
that
parts
table,
instrument
and
function
required.
office.
inductor
. .
=
meg=10
Hertz
plug
10"t
R
W
N.
P . . . .
RF
IJ.
and
office.
is
include
serial
of
Address
. . .
..
replaceable
part
address
not
listed in
the
number,
the
part,
the
. .
..
......
nano=10-
pico=10-
radio
frequency
micro=10-
parts
number,
the
order
the
instrument
and
and
the
ordertothe
resistor
cable
9
12
6
5-1/6-1
Replaceable
Parts
Table 6-2. Replaceable Parts
Model
116658
Reference
Designation
.I
1
.I
1
HP Part Number
11665-600Q8
1250-0914 1250-0915
5020-3297 1460-052(, 5020-3296 5040-0306
11665-60009
1250-0916 1250-0917
1250-0016
1250-0918 5020-3291
1460-0526
5020-3296 5040-0306
Qty
Description
INPUT CONNECTOR/FEMALE TYPE-N JACKI /FOR OPTIONS CONSISTSOFTHE
2
BOOY:RF
2
CONTACT:RF CONTACT:SLIOING
5
5
SPR
rNG:COMPRESSION
CONDUCTOR:CENTER
5
5
INSULATOR
APPLY HP
PART CONTACTORCONTACT WHEN SLIDING CENTER CONDUCTOR. EASIERBYWRAPPING A
WIRE
INPUT (FOR OPTI CONSISTSOFTHE
2
BOOY:RF
2
CONTACT:RF RING:RF
2
2
NUT:RF CONTACT: SLID SPRI NG:COMPRESS ION CONOUCTOR:CENTER INSULATOR
PROPERLY
AROUND
011
AND
CONNECTOR
SMALL
NO.
CONT
CONNECTOR(MALE
CONNECTOR
CONNECTOR
CONNECTOR
FOlLOWING PARTS:
CONNECTOR
CARTR
NOTE
AMOUNTOFTYPEA"LOCTITE" 0470-0013
ASSEMBLED
ACT
SKlULOBEIN
THE
CONTACT
ONS
021.
022.I:023.1
FOLLOWING PARTS:
SERIES
CONNECTOR
SERIES
ING
CARTR
013~
lOGE
AOAPT
TO
THREADS
ASSEMBLY.
ALL
ASSEMBLY
PIECEOFFINE
FINGERS.
TYPE-N PLUG)
APC-N
SERIES
N
lOGE
ADAPT
OF
FINGERS SIOE
CANBEMADE
APC-N
THE
OF
Mfr Code
2Blt80
02660 02660
2B480 00000
28480 28480
28480
02660 02660 02660
02660
28480
00000
28480
28..80
Mfr
Part Number
11665-60008
131-150 131-149
5020-3291 OBO 5020-3296 501tO-0306
11665-60009
131-1"8 131-147
82-113B-6 131-135
5020-3297 080 5020-3296 501tO-0306
.I
J 2
NOTE
APPLY
SMALL
HP
PART
CONTACTORCONTACT WHEN SLIDING CENTER EASIERBYWRAPPING A WIRE
OUT
2
11665-60008
1250-0914 1250-0915 5020-3291 1460-0526
5020-3296 5040-0306
11665-60009
1250-0916 1250-0911
1250-0016
PUTCONNEC
(FOR OPTIONS
CONSISTSOFTHE BOOY:RF CONTACT:RF CONTACT: SPRI
NG:COMPRESSI
CONDUCTOR:CENTER
INSULATOR
APPLY HP
PART
CONTACTORCONTACT
WHEN
SLIDING CENTER EASIERBYWRAPPING WIRE
OUTPUT (FOR OPTION
CONSISTSOFTHE
BOOY:RF
CONTACT:RF
RING:RF
AMOUNTOFTYPEA"LOCTITE"
NO.
0470-0013
PROPERLY
CONTACT
CONDUCTOR.
AROUND
CONNECTOR
CONNECTOR
SLIOI
NOTE
SMALL
NO.
PROPERLY
CONTACT
CONDUCTOR.
AROUND
CONNECTOR(MALE
CONNECTOR
CONNECTOR
CONNECTOR
ASSEMBLY.
ASSEMBLED
SHOULDBEINSIOETHE
ASSEMBLY
THE
TOR/FEMAL 011
NG
AMOUNTOFTYPE A 0410-0013
THE
022.1
PIECEOFFINE
CONTACT
AND
021.1
FOLLOWING
ON
CARTR
ASSEMBLY.
ASSEMBLED
SHOULDBEINSIDE
ASSEMBLY A PIECEOFFINE
CONTACT
FOlLOWING PARTS:
SFRIES
SERIES
SERIES
TO
THREADS
ALL
FINGERS.
E TYPE-N JACK 1
lOGE
TO
THREAOS
ALL
FINGERS.
TYPE-N PLUG)
APC-N N
OF
FINGERS
CANBEMADE
PARTS:
ADAPT
"LOCTITE"
OF
FINGERS
THE
CANBEMADE
APC-N
OF
28480
02660 02660 28480 00000
28480 28480
OF
28480
02660 02660
02660
11665-6000B
131-150 131-149 5020-3291 OBO
5020-3296 501tO-0306
11665-60009
131-14B 131-1'01 82-1138-6
See
introductiontothis
section
for
ordering
information
Model
116658
Table 6-2. Replaceable Parts
Replaceable
Parts
Reference Designation
J 2
(CONT'D)
.
.J
2
HP
Part Number
1250-0918 5020-3297 1460-0526 5070-3796 5040-0306
11665-60010
1250-0909 1250-0816 5020-3297
1460-0526
5020-3796
5040-0306
Qty
Description
NUT:RF
CONNECTOR
CONTACT: SLIOING
SPRING:COMPRESSION
CONDUCTOR:CENTER CARTRIDGE
INSULATOR
NOTE
APPLY
SMALL
HP
PART
CONTACTORCONTACT WHEN SLIDING CENTER
EASIERBYWRAPPINGAPIECEOFFINE
WIRE
OUTPUT IFOR OPTIONS
CONSI STSOFTHE
1
ASSY:RF
1
CONTACT:RF CONTACT:
SPRI
NG:
CONDUCTOR:CENTER CARTRIDGE
INSULATOR
AMOUNTOFTYPEA"LOCTITE"
NO.
0470-0013
PROPERLY
AROUND
ASSEMBLED
CONTACT
CONOUCTOR.
CONNECTOR(APC-7)
CONNECTOR
SLiO
COMPRESS
SHOULDBEINSIDE
THE
CONTACT
013. FOLLOWING
CONNECTOR
INC
ION
NOTE
TO
ASSEMBLY.
ASSEM8LY
023
AND
APC-7
FOR
ADAPT
THREADS
ALL
FINGERS CANBEMADE
FINGERS.
0331. PARTS:
TYPE
APC-7
ADAPT
OF
OF
THE
CONNECT
Mfr Code
02660 28480 00000 28480
28480
28~80
02660 02660 28480
00000 28480
28480
Mfr
Part Number
131-135
5020-3297 OBO 5020-3296 5040-0306
11665-60010
131-1057
131-1054 5020-3297
OBO
5020-3296
5040-0306
P1
00000 02660 28"80
MFR NO.
U.S.A. AMPHENDI. HFWLETT-PACKARD
1250-0532 1"60-1285
08491-2009
7l2~-0656
MANUFACTURFR
r.OMMON
CORP.
CO.
NAME
CORPDRATE
APPLY
SMALL
HP
PART
CONTACTORCONTACT
WHEN SLIOING
CENTER EASIERBYWRAPPINGAPIECEOFFINE WIRE
DRIVECONNECTOR CONSI STS
1
CONNECT
1 SPRING:COMPRESSION 1 CONTACT:SUDING
DO
NOT
CONNECTORIPll
PARAGRAPH 8E
DAMAGED.
LABEL
AMOUNTOFTYPE A
NO.
0470-0013
PROPERLY
AROUND
ASSEMBLED
CONTACT
CONDUCTOR.
OR:
ATTEMPTTOREMOVE
THE
OF
THE
RF
CAUTION
8-17.
WITHOUT
SHOULDBEINSIDE
CONTACT
FOR
FnLLOWING PARTS:
THE
TO
THREADS
ASSEMBLY.
ALL
ASSEM8LY
FINGERS.
ALL
OPTIONS
0.057"
THE
FIRST
MODULATOR
00
Table 6-3. Manufacturers Code
HO
·LOCTITE. OF
FINGERS
CANBEMADE
READING
0.190·
DRIVE
MAY
THE
OF
LG
List
ANY
SUPPLIEROFU.S. BROADVIFW. ILL • YOUR
NEARESTHPOFFICE
ADDRESS
28480 00000
284BO
28~80
A.
1250-0532
080 08491-2009
712~-0656
ZIP
COOF
60153
,
See
introductiontothis
section
for
ordering
information
Replaceable Parts
- -
.lEi
TYPE
FEMALE
N
JACK
Model
11665B
-1-
Sliding
o
Spring
Center
Insulator
PLUS ONE
Contact
Body
Contact
Body
Ring
G)
Nut
Contact Coupling
41)
APC-7
11
EACH
RF
CONNECTOR
Contact
Conductor
OF
THE
FOLLOWING
Type N Female Jack Connector
(Opt.
011,
013,&021)
Type N Male Plug Connector
(Opt.
021,
022,&023)
APC-7 Connector
(Opt.
013&023)
Nut
Assembly
CONSISTS
Consisting
Consisting
Package
Consisting
_~.zy~
~
-L
OF:
PACKAGES
Package
of:
Package
of:
of:
TYPEN
MALE
PLUG
6-4
Figure 6-1.
RF
Connectors Replaceable Parts
Model
11665B
Manual Changes/Service
7-1. INTRODUCTION
7-2. This for
adapting the manual
8-1. INTRODUCTION
8-2. This repair section
a.
b.
section
content
does
section
information.
is:
Test
A Service operation
normally
this
manualtoinstruments
does
not
apply
covering repair
directlytoinstruments
contains
The
Sheet
andaschematic
contains
apply
general
directly.
troubleshooting
organizationofthis
procedures.
containing
SECTION
MANUAL
information
for
Since
SECTION
principles
diagram.
CHANGES
which
this
having
SERVICE
and
of
VII
numbers
serial information MENTS additional number
COVERED
coverage.
listed
is given here.
important
on
BY
the
title
Refer
MANUALinSectionIfor
information
VIII
8-11. R F Connector Replacement
8-12. Several (Figure 8-1) following
standard
may
connectors
Connector
Type
TypeNFemale
HP
RF
be
used
on
are available:
TyPe
N Male Plug
APC-7
Jack
page,
Input
the
no
to
INSTRU-
about
connectors
11665B.
change
serial
The
8-3. PRINCIPLES OF OPERATION
8-4. A circuit diagram helpfulinunderstanding tion.
8-5. TROUBLESHOOTING
Troubleshooting
8-6. lator
consistsofperforming
and
the shooting details.
8-7. RECOMMENDED TEST EQUIPMENT
Equipment
8-8. tain
the
11665BislistedinTable
for
servicing
8-9. REPAIR
8-10. This procedures special care is necessary.
description
is given
Performance
Procedures, paragraph 8-19,
section
for
opposite
recommended
the
11665B
gives
some
keyedtothe
the
each
the
Model
the
Tests.
are also listed.
detailed
individual
schematic. This is
major
11665B
Operator's
Refer
to
1-3. Special
step-by-step
components
schematic
circuit func-
to
for
test
and
Modu-
Check
Trouble-
further
main-
tools
repair
where
8-13. inner
(Type outer open-end 8710-0877.
conductor
the conductor
assembly
open-end
To
conductor
a. With a
N)
shellonthe
b.
Carefully remove
Do
NOT assembly. moved,
Insert
c.
RF
connector
d. Screw
on
e.
Tighten
replace
open-end
wrench
assembly.
reassembly is difficult.
to
the
wrench
the
connector
assembly
thin
11665B.A1/2-x9/16-inch
can
disassemble
If
the
new
shell.
seat
the
the
connector
outer
used
proceed
1/2-inch
wrench,
be
ordered
the
the
sliding
center
Push
center
corresponding
mounting.
shell assembly
for
disassembly.
outer
as follows:
(APC-7)or7/16-inch
loosen
as HP
outer
center
contact
conductor
down
conductor
shell
the
connector
Part
shell
and
conductor
is re-
assembly
on
the
assembly.
outer
with
center
and
thin
No.
inner
in
shell
the
7-1/8-1
Service
SPECIAL
ORDER
FLAT
SIDE
1250-1360
OPTIONS
013 023
Model
11665B
RF
INPUT
CONNECTORS
OPTIONS
011
013
;·;ti;tttD~I~.~;~~
SER
1
=
OPTIONS
021 022 023
Figure 8-1. Model
8-14. Replacing Center Conductor Contact in
APC-7 Connectors
8-15. center four-pronged
by magnifying glass ifitneeds CONTACT aged burrs spaced.
1260-0907. follows:
faces
Through
conductor
collet
center
conductor.
the
spring-action
replacement.
FOR
by
removing).
or
wear
If
the
(it
may
be
damaged
Amphenol*
Part
If
a. Place
down.
*
AmphenolRFDivision.
wearordamage,
may
need
which
This
examine
snaps
contactisnormally
of
the
this
DO
INSPECTION
The
contact
and
the
prongs
the
contactinthe
replacing.
into
four
It
a recessinthe
progns. With a
contacttodetermine
NOT
REMOVE
(it
may
shouldbefree
should
be
contactisremoveddoNOT
by
Number
it
needs
the
instrument
Danbury.
removal).
131-129
replacement
Connecticut.
so
This
and
the
HP
proceed
is a small
held in
THIS
be
dam-
of
equally
re-use
contact
Part
No.
connector
it is
as
...
,
..
Connectors
b.
of
.
Tap
now
the
protrude
with
0 0
:'?
11665B
should
pin
5060-0236,
available,anordinary
maybeused.
cil
c. Allow
and
pull
straight
the
HP
the
connector
contact
the
jaws
away
OPTION
022
OPTIONS
lightly
slightly.
extractor,
jaws
open.Ifthis
draftsman's
on
the
from
the
011 021
and
Insert
mechanical pen-
tool
connector
twisting.
d.
Snapina
contact
8-16. BNC CONNECTOR REPLACEMENT
8-17. connectors, 8-11, connector nector,
in place.
In
addition
which
the
only
replacement.
proceedasfollows:
field
new
to
has
repair
contact
by
replacing
been
given
procedureisthe
To
replace
RF
OUTPUT
CONNECTORS
the
contact
the
centering
part
number
toolisnot
usedtoclose
without
pushing a
the
RF
Input
in
paragraph
BNC
the
BNC con-
new
8-2
Model
11665B
Disassembly
Remove NOT
only
remove
connector.Ifboth
11665B
will
returnedtothe
a.
Remove
nearest
wrench
b.
the
Insert
into
BNC
connector.
a 0.05-inch across-the-flats
the
hole
(a) was removed.
clockwisetoloosen.
c. Remove
not
as center
to
lose
conductor
the
the
assembly. See Figure 8-1.
Reassembly
the
both
be
factory
only
Turn
BNC
contact
screw
screws are
damaged
the
left
instructed.
screws
in
removed
and
must
for
repair.
single pozi-drive screw
when
the
screw in
the
hex
wrench
connector and
spring in
Do
the
IN
the
be
hex
step
counter-
carefully so
the
BNC
be
returned
this is
f.
Push
tighten
setscrew firmly.
g.
moved
8-18. the apart
in
For
factory.
for
likely will
to
sary
reassemble
done.
down
Replace pozi-drive screw previously re-
step
any
repair.Ifthis is
be
to
on
a.
other
Do
not
damaged.
the
the
the
BNC
repair,
attempt
factory
done
for
connector
return
to
the
take
the
repair
the
11665B
Special fixtures are neces-
11665B.
firmly
11665B
11665B
8-19. TROUBLESHOOTING PROCEDURES
8-20. Simple check diode the
the
is used
connectors.
ohmmeter
Model
with
11665B
either
checks will
because
polarity
not
more
input
adequately
than
on
Service
if
and
to
most
one
any
of
d.
the
new
by
wrapping
contact
e.
side
towards
Do 11665B
Install
connector.
a piece
fingers.)
Position
the
not
insert
may
the
spring (Assembly
of
the
new
setscrew.
the
connector
be damaged
and
sliding
canbemade
fine wire
connector
and
and
may
around
with
turn.
have
contact
easier
the
The
to
in
the
flat
8-21.
Troubleinthe encountered trouble
is
when
encountered,
11665B
attempting
perform Check, Figure 3-3, first.Ifthe formisnot go
to
not
pass nector. connectors, repair.Ifthe Tests,
typical
the
Performance
the
If
there
return
check
for
Performance
is
no
the
11665B
11665B
the
does pass
system
the
particular
Tests.Ifthe
Tests,
obvious
in
whichitis
trouble.
will
probably
normal
the
modulation
inspect
fault
to
the
the
first
be
operation.
Operator's
wave-
application,
11665B
factory
the
with
will
con-
the
for
Performance
used
'for
If
8-3
Service Model
11665B
8-22. PRINCIPLES OF OPERATION
8-23.
The
Modulator
type, divides capacitor, high-pass filter. Blocking ceramic
'modulator.
ically-sealed MHz high-pass filter is a design. modulation line. be up would range.Itcould,ofcourse, also change of destroy
8-24. states: During match insertion
operating
naturally
an
operational
type
The
PIN-diod~
The
filter
drive
Without
as high as
as
an
active devices
The
low
the
oneortwo
increase
also decrease
them.
Modulator
loss
transition
gets
no
lossatzero
are
operational
(+50
worse
is a
with
a single
into
three
module,
found
absorptive
three-element
is necessary
from
being applied
filter
the
drive
volts,
in
system
the
in
the
tested
operates
mAl
and
between
than3:1 SWR
currentisabout
two-state
current
sections, a
capacitors
on
each
moduleisa
to
feedthrough
which
noise level,
instrument's
network,
normally
high loss
states
absorptive
drive.
anda15
of
end
switch.
Chebyshev
prevent
to
should
dynamic
the
bias level
(-50
the
impedance
6 dB. This
It
blocking
MHz
the
disc
of
the
hermet-
The
15
the
the
RF
could
show
and
or
even
in
two
mAl.
and
the
occurs two
8-25. conducting,
biased. resistors; except
low-pass filter. the
8-26.
biased
this'resistor The
it
its signal
RF high-loss
out grounded presentsagood
8-27. the variable resistors as
when
47-ohm
In
The
for
module.
In
through
other
barrier
cannot
signal is
of
the
The
diodes
all
the
diodes are off, leaving
resistorsinseries
the
low-loss
while
series diodes bypass
the
shunt
their
The
the
high-loss
Rl.
back-biases
series
diode,
potential
forward
low
state.
The
circuit,
through
match.
control
are being used as switches,
state,
the
two
diodes are
capacitance,
result
state,
The
is
bias
because
series
the47-ohm
the
shunt
currentisnot
in
some
with
the
shunt
out
whichispartofthe
is a low-loss
.
the
voltage
the
one
series diode,
CR4,isnot
sufficient
this
diode.
the
diodes
diodes,
absorptive
series diodes are
shunt developed
module
beirig,effectively
resistors
only
the
load.
diodes
back-biased
so
critical
are back-
the
47
of
the
path
through
diodes
that
the
At
CR4 is
now
and
the
because
modulators.
the
-ohm
circuit
are
across
CRl.
but
RF the
in
are
circuit
not
its
as
~----------------------------,
I I
I
Jl I
IN
370pF
)----7
I
I
L
920nH
lropF
47n
RI
~47onH
,CRI
~I ~I
]~CR2
-~CR3
47Q
CR4
lropF
"
I I
}
470nH
f f !
~
920nH
I
I
L _
BLOCKING
CAPACITOR
47Q 47Q
In
CR2
HIGH-LOSS
HIGH-PASS
In CR3
STATE
DRIVE
,-
15-MHz
-
FILTER
:
TRANSITION
~
_____________________
PI
47Q
MODULATION
47n
4_F:
STATEATZERO
MODULE
0
BIAS
1-ll2n
CRI
HIGH-PASS
-
CR2!
15-MHz
FILTER
-
LOW-LOSS
t
STATE
370pF
'~
BLOCKING
CAPACITOR
1-ll2n
-----.
Rl
:
J
I
I I
CR4
J2
OUT
0
8-4
Figure 8-2.
Model
11665B
Modulator
Schematic
HEWLETT·
PACKARD
ELECTRONIC
UNITED
ALABAMA 8290
Whitesbura: Dr., S.£. Box
4207
P.O.
Hunsbltle
35802
Tel: (205) 181-4591
TWX:
810·726·2204
ARiZONA 2336E.Malnol;a
Pllotnlx 85034
Tel: (602) 244-1361 Tel: (505)
TWX:
2424 East TIIC5On85706 Tel:
CALIFORNIA 1430
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lIOl
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9606
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Tel: (714)
TWX:
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Enllewood
Tet: (303) 771-3455 TWX:
910·951-133[1
Ataion
(602)889-4661
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Otlnrethorpe
(714)870·1000
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(213j877·1282
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Angeles 90045
776·7500
910·328·6148 Embarcadero Road
910·373-1280
95825
482·1463
910-367·2092 Aero Drive
Box
23333
Diel092123
279·3200
910-335·2000
South
Ulster
80110
910-935-0705
St.
Rd.
91604
Parkway
Ave.
CONNECTICUT 12lunuOrive New
Haten
06525 Tel: (203) 389·6551 TWX:
710·465·2029
FLORIDA PO.
80_
24210
2806
W.
Oakland Park Blvd.
fl.
lauderdale
Tel:
(305)731-2020
TWX:
510·955-4099
Box
139:0
P.O. 6177 Lake Ellenor Or. Orlando, 32809 Tel: (305)
859·2900
TWX:
810-850·0113
GEORGIA P.O. Box
28234
450
Interstate
Atlanta
30328
Tel:
(404)436·6181
TWX:
810·766·4890
HAWAII
King
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lUlu
96814
Tel:
(B08j955-4455
ILLINOIS 5500 Howard Skakle60076 Tel: (312)
677·0400
TWX:
910·223-3613
INDIANA 3839 Meadows Drive Indlanapolts46205 Tel:
(317)546-4891
TWX:
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IOWA 1902 Broadway towa City
52240 Tel: (319) 338-9466 Nishi:
(319)
LOUISIANA P.
D.
Box
840 3239
WtJliams Boulevard
70062
Kenner Tel: (504) 721·6201 TWX:
810·955·5524
INSTRUMENTATION
STATES.
33307
North
Slreet
Street
338·9467
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UNITED
MARYLAND 6707
Whitestone
Baltimore
21207
Tel: (301) 944-5400
TWX:
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Century
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873
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Tel:
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AND
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Progress
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SERVICE
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E.
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(214J231-6101
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P.O.
Box
27409
6300
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Main
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Box
9854
Hungary
Springs
(804)2B5-3431
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VIRGINIA
345·1640
W.
Beloit Road
53227
541·0550
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AREAS
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are
listed
Only
Drive
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complete
Road
NOT
Ceorcia.
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Suite
HOUltlln 77027
Tel: (713) 781-6000 TWX:
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Tel: (304)
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dresses
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..
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3560014
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ltda.
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1119
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309151/2/3 HEWPACK
Sao Paulo
00 Brasil
Dom
Feliciano,
Alelte·RS
Grande do Sut
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OX5
(403)452-3670
610-831·2431
(Canada)
...
enue
S.£.
T2G
lZI
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...
ia)
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1342
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(RS)
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GIN
4G4
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AREAS
Hewlett·Packard (Can·
Ltd. in
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LISTED,
ltd.
NOT
E
4/74
MANUAL
r-
MANUAL
Model
Number:
Date
Printed:
Part
Number:
CHANGES
IDENTIFICATION
11665B
July 1973
11665-90011
-
This supplement contains important information for correcting manual errors and for adapting the manual instruments containing improvements made after the printing of the manual.
To use this supplement: Make
all
ERRATA corrections
Make
all
appropriate serial number related changes indicated in the tables below.
~
Serial
PrefixorNumber
~
NEW
ITEM
_,.--
Make
Manual
Changes
_
.--
Serial
PrefixorNumber
_,...--
Make
Manual
Changes_
ERRATA
Page
1-3, Table 1·2:
ON
Extend
CONDITION Insertion Loss graph (upper graph) LIMITS curve from 12.0to18.0
along the 5dBscale line.
Page
1-4, Table 1-3:
of
Change lower Frequency limit
all items in Critical Specifications columnto15
Under Sweep Oscillator Suggested Model add 86210A (3to350 MHz).
to
Change Dual Directional Instrument Type
HP
8721A (15to110 MHz)toSuggested Models shown.
Dual Directional Coupler/Directional Bridge and add
MHz.
GHz
to
Page
Page
Manual Hewlett-Packard from number
/ 6 March 1974
2 Pages
PrintedinU.S.A.
1-5/1-6, Table 1·3:
Under Detectors (3), change lower Frequency limit in Critical Specifications column Under Oscilloscope Suggested Models add 1802A.
2-2, paragraph 2-13:
Change temperature range
to
O°Cto+55°C.
NOTE
change
supplements
allHPoffices.
and
print
recommends
When
date
from
are that
requesting
the
title
revised
you
periodically
copies
pageofthe
as
often
quote
as
request
the
manual.
necessary
manual
to
the
latest
identification
keep
edition
manuals
of
this
information
as
current
supplement.
from
to15MHz.
and
accurateaspossible.
Free
your
copies
supplement,orthe
HEWLETT
are
available
~
PACKARD
model
Model 11665B
11665-90011
ERRATA
Page
(Cont'd)
2-2, paragraph 2-18:
Change temperature range
Page
4-2, paragraph 4-11:
Change SPECIFICATION
Return Loss (ONorOFF .015
to
0.04 GHz: ;;;'10 dB(~1.92
0.04to4 GHz: ;;;'15 to
8 GHz: ;;;'12 dB
4 8to18
Page
4-2, paragraph 4-12:
GHz:
Change SPECIFICATION
Page
4·3, Figure 4-1:
BNC
The
TEE should be shown as a straight-through TEE,
wrong indication.
to
-40°Cto+75°C.
to
Condition)
dB
(~1.43
(~1.67
;;;.
8 dB(~2.32 SWR)
to
Frequency
0.015to0.04 to
to to
8
12.4 to
4
18
0.04 4 8
12.4
SWR) SWR) SWR)
(GHz)
ON
Condition
~
7.0
dB
~
3.2 dB
~
3.8
dB
~
4.3
dB
~
5.0 dB
not
a power splitter.
OFF
Condition
;;;.
35 dB ;;;.35dB ;;;'40 dB ;;;'45 dB ;;;'45 dB
Useofa power splitter will
give
a
Page
4-4, paragraph 4-17:
Change
to
read as follows:
SPECIFICATIO
N:
DESCRIPTION:
not
This test will
be shown here since itisa standard insertion·loss (transmission) test showninthe Service Manual for the Model 8407A biased on Refer
Page
8-2, Figure 8-1:
Change
or
off
while being tested. Refertoparagraphs 4-7 through 4·10 in this manual for biasing instructions.
to
the Operating and Service Manual for the 8407Aor8410A for testing information.
top
BNC
connector part numberto1250-0532.
Frequency(GHz)
Model
8407A
0.015to0.04
0.04
to
0.11
Model 8410A
0.11 to 4 4
to
8
8
to
12.4
12.4 to 18
or
OFF
ON
Condition
~
7.0 dB
~ 3.2 dB
~
3.2 dB
~
3.8 dB
~4.3
dB
~
5.0 dB
Condition
;;;.
35 dB
;;;.
35 dB
;;;.35dB ;;;'40
dB ;;;'45 dB ;;;'45
dB
8410A. In this case the device under testisan 11665B,
Operating and
Which
must be
HEWLETT
Ii
PACKARD
2
HP
Part
No.
11665·90011
Printed
in
U.S.A.
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