HP 11665b schematic

OPERATING

AND

SERVICE

MANUAL

•

116658

..

~,

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

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

2-2

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

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

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

.the

8755A

Modulator

50

MHz,

11668A

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

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

to

4

4to8

8

to

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

~40dB

~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

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.

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--

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)

with:

GHz)

Use*

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

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

T

No.

8710-0877

Chng.

Conn.

*P =

Performance

Testing,

T =

Troubleshooting

1-5/1-6