HP 777D User manual

HEWLETT",

l.

Figure

PACKARD

1. Model 777D

Directional

DUAL

For

serials

Coupler

DIRECTIONAL

3088 and above

power
cifiedasmean
auxiliary
appropriate
is

within
within
ratioofthe
in

0.5 db.

The

Model 777DisshowninFigure

check

3.

Usesofthe
urements,
monitoring,

4.

Each

(~

Stock

The

feet
removedtomount
between

COUPLER

OPERATING

from

secondary

coupling.

armisstampedonits

auxiliary

±0.4 db of

±0.5 db of

two

auxiliary

Complete

procedures

coupler

simultaneous

and

coupler

No. 0361-0207) on

are

insertsin8-32

mounting

armtomain

arm.

the

mean,

-20

db. In

specifications

are

giveninParagraphs14through

closed

is

supported

the

coupler.

holes

The

mean
nameplate

The

and

addition,

arm

coupling

include

forward

loop

leveling

the

bottomofthe

tapped

are

giveninFigure

model

7770

NOTE

variationincoupling

the

reflectometer

by

Lateral

16

MAY

line

inputisspe-

couplingofeach

opposite

mean

coupling

the

variation

factorsiswith-

are

giveninTable

1.

Performance

and

reverse

applications.

four

plastic

holes

and
dimensions

2.

67

the

meas-

power

feet

coupler.

may

19.

be

is
in

1.

5.

1.

INTRODUCTION.

2.

The

Model 777Disa

is

designed

this

coupler,

for

usein50 - ohm

coupling

dual

directional

coaxial

attenuation

(ratio

coupler.

systems.

of output

It

In

CONNECTORS.

6.

An
coupler.
type N

Table1.Specifications
FREQUENCY RANGE: 1900to4000 Mc
MINIMUM
NOMINAL COUPLING ATTENUATION

ondaryarm):

ACCURACY

DIRECTIVITy1:

20

db

OF

COUPLING

30 db

(each

(each

secondary

sec-

arm):

±0.5 db

MAX COUPLING VARIATION

(each

secondary

arm):

±0.4 db

AUXILIARY ARM TRACKING2:

Equaltoor

less

than

0.5 db.
MAX PRIMARY LINE SWR1: 1.2
MAX SECONDARY LINE SWR: 1.25

~

I

~

~

~

Nr-------------------------------------~.---------I

o

MAX

50

POWER

watts

HANDLING CAPACITY:

CWor10kwpeak

PRIMARY LINE INSERTION LOSS:

Approximately

PRIMARY LINE CONNECTORS

~Compatible

female

SECONDARY LINE CONNECTORS3,:

~

CompatibletypeNconnectors,

ACCESSORIES AVAILABLE:

~

11511A Type N

~

11512A

SIZE:

8-7/8inx

NET

WEIGHT:

1-1/2

~Compatible

When

connector,

typeNconnectorisusedonthe

this

connectorismated

only

slight

0.6 db

typeNconnectors,

Female

TypeNMale

2-1/2inx

lb (700 g)

withastandard

discontinuity

3

,:

one

male

should

and

exist.

one

female

Shorting

Shorting

Jack

Plug

1-1/8in(225 x 64 x29mm)

PrintedInU.S.A.

00777.9021,50,

oEurope: 54

Page

Mill

Route

Road, Palo

Des

Acacias, Geneva,

Alto,

California,

Switzerland,

U.S.A.,

Cable:

Cable:"

"HEWPACK"

HEWPACKSA"

Tel:

Tel.

(415)

(022)

326-7000

42.81.50

Page

2

6.015"

E)-

-

Il'l

C\J

I

e-

I

Figure

8.

REFLECTOMETER

9.

Figure5illustratesatypical
reflectometer
the

couplerisused

Any

variations

are

proportional
variations
as

the

C€f;

Model 692A,

to

produceanegative

maintainaleveled

2.

Tapped

Figure

measurements.

in

to

and when

Lateral

Mounting

3.

Typical

for

leveling

the

detected
the
appliedtoa

these

control

RF

output.

~777D

Dimensions

Holes

~'-----TEST

Recorder

APPLICATION.

setup

The

forward

the

sweep

forward-wave

swept

frequency

sweep

oscillator,

variations

voltage

whichisused

-e-

-,-

177D-A-'

of

CALIBRATION

LINES

1770-

Plot

for

making

output

oscillator.

output

are

amplified

I

TRACE

A-.

of

output

level

such

to

x-

AXIS

SWEEP OSCILLATOR

SIP

Rff

"--------l

displayed
which
usedasa
coupler

Ale

Figure

the

opposite

reflection

0

5.

on an SWR
termination

oscillator.

Y-AXIS

LOW

PASS

FILTER

Typical

measurements

the

SWR

CRYSTAL

DETECTOR

hp

Reflectometer

Meter.

on

the

main

end fed by

METER

o

>------

Y

THIS

CALIBRATION
ATTENUATOR

~

I I

I I

-.v

f-------/

THEN
THIS

""

unknown

are

line

the

i :

I

l

.•."TEST

Setup

being

outputofthe

leveled

777D

The

Model777D

THEN

THIS

THIS

SHORT

f-T-{]

L--<OPEN

'--0

DEVICE

UNDER

load

made

sweep

"

I

:
I

I

,

on

is

10.

tional

0.064MIN.

0.0655

The

outputofthe

to the

MAX.

reverse

reflections

.L--\====~~~

from

arm

the

A

Figure

whichispropor-

device

4.

under

ALL

Dimensions

test

is

0.314MIN.

0.316

MAX.

I

DIMENSIONS

of hp

Compatible

11.

EQUIPMENT

Crystal

423A

IN

INCHES

CONSIDERATIONS.

Detectors

0.316

0.320

MIN.
MAX.

are

suitable

Jtj~:~~===~

Type

NConnectors

The

r[j;

for

use

0.063

MIN.

0.066MAX.

eOTA-A-II

Model

as

the

lDL..

:r.

02114-4

Model 777D

SWR

METER

o

X-AXIS

X-V

RECORDER

SWEEP

OSCILLATOR

SIP

ml1..-~LO""'W~PAC-=S-"is

Ale

FILTER

Y-AXIS

2008

ATTENUATOR

'1

I \

I '
I

If

0

II""

r"'----'-L-,

'\

\

D\

..

THI~

,:

~nc=:=JcT

~=~:-'

Figure

detectors.
140A
is

suitable
ment.
required,
suitable

12.

For

An ~ Model 415E

Oscilloscope,

for

If

a

permanent

the

for

use

more
refertoHewlett-Packard
of which
upon

13.

14.

maybeobtained

request.

PERFORMANCE CHECKS.

Test

equipment
specifications
Equipment

better

substituted

than

whose

the

for

15. MECHANICAL INSPECTION.

tion

should
checks
tant

dimensions).

include

on the

shouldberemoved

16. ELECTRICAL INSPECTION.
tionofthe
pling
directivity

coupler

checks

and
toadegree,
satisfactory
factory

directivity

coupler

17. COUPLING CHECK.

COUPLING ATTENUATION:
MAXIMUM COUPLING VARIATION:

02114-4

6. Coupling Check

SWR

Meter,

or~Model

use

as

the

recordofthe

130B/C

calibrated

measurements

Moseley Model 7035X-Y

with the

SWR

Meter.

informationonreflectometer

Application Note 65,
from

your

local

recommended

of

the

characteristics

critical

the

equipment

coupler

specifications

is

listed.

for

listed

are

Mechanical

periodic

connector

Also, any

from

mechanical

(refertoFigure4

accumulated

the

coupler

connectors.

Electrical

should include

and optionally

SWR

characteristicsofthe

interdependent

check

directivity

the

SWR

characteristics
should

SWR. )

20

±O.

THEN

THIS

L

IIp777D

use

indicate

TE~I

NATION

~ Model

Oscilloscope

display

Recorder

systems,

field

in checking

in

Table

equal

listed

inspec-

dimension

for

impor-

dust

and

inspec-

and

check.

coupler

5 db

±0.4

instru-

copies

office

to

may

dirt

cou­(The

are

and a

satis-

db

or
be

Page

3

a.

Set up

test

equipmentasshown in

Figure

6.

Note

SWR

Meter

be

connectedtocommon

b.

Set

Sweep

lated

2. O-Gc

c.

With
Directional
reference
the

SWR

Meter.

peak-to-peak

d.

Disconnect
tachtosecondary
line

connectortoDirectional

e.

Switch
recordatrace.

COUPLING ATTENUATION: Max

Actual

f.

Disconnect

and

record
setting
Note 777

SWR

mean

COUPLING ATTENUATION: Max

is
is

Actual

MAX

ation
uation
than

2.

18. DffiECTIVITY CHECK.

and Sweep

Oscillator

should not

grounds.

single

Crystal

Detector

setting

Oscillator

frequency
Detector

of 0 on

forasquare-wave

RF

Attenuator

output,

set

the

30dB-NORMAL

output.

RF

output

connected

level

Check 423 outputtoassure

output. -

Crystal

Detector

attenuator

armof777D. Connect 777D

SWR

Meter

(See

range

Figure

Detector

switch

3)

output.

down 20 dB and

20.5

Min

Reading

777D

calibrating

Meter

from

linesin0.2

to 2GHz and

coupling and coupling

(2.0

attenuator.

then

19.5

Gc)

Go

dB

increments,

sweeping

variation.

back
2-4

20.5

Min

19.5

db

Readings:

(2.6

Gc),

(3.2

Gc),

(3.8

Gc),

(2.2
(2.8
(3.4

(4.0

Gc),
Gc),
Gc),
Gc),

(2.4
(3.0
(3.6
(Gc),

COUPLING VARIATION: Maximum

between any of

measurements

0.8

db.

the

actual

may

not

coupling

vary

by

modu-

for

scale

<5 mV

and

main

db

db

GHz:

db

Gc),
Gc),

Gc),

vari

atten

more

to

to

a

of

at-

~

MINIMUM DffiECTIVITY: 30 db

a.

Setup

equipmentasshowninFigure

Attenuator

connected

terminatedinan

between

open-circuit.

423Aand 777D,and 777D

6 with 10 dB

Note

The

signal

source
notbeconnectedtocommon
signal

sourcetopower

SWR

Meter.

b.

Set Sweep

modulated

:s:

5 mV

peak-to-peak.

c.

Set O-dB

dication

between

quencyinthe

Oscillator

RF

output. Check 423A output and

referenceonSW_R

band.

open-

and

and

the

line

for

SWR

Meter

ground. Connect

ground and

leveled,

Meterasaverage

short-circuit

should

isolate

square-wave

set

in-

at

any

fre-

to

Note

The

O-dB

reference

tenuator

attenuationtobe
attenuationismore
SWR

Meter

reference

so

that

the

O-dB

when

padisremoved.

setting

or

less

setting

reference

assumes

total

10 dB;ifthe

than

10 dB,

shouldbeoffset

represents

at-

total

the

0 dB

Page

4

SIP
REf

d.

sliding

e.
f.

Meter

AlC

Remove

loadtocoupler.

Set

Sweep

Continuously

minimum
minimum
the

O-db

reference

specification

DIRECTIVITY: At

cation

scale.

to

next

g.

To

determine
quency
the

measurements

following

(1)

Add 30 db to
Meter

(2)

Subtract

reading;

Figure

10dB

Oscillator

and

maximum

(30 db).

should

If

step.

procedure:

readings;

minimum

Y-AXIS

'I.

Attenuator

phase

and

maximum

the

not

any

points

actual

the

SWR

Directivity

from

Increase

for

100-second

Sliding

indications

coupler

least

30 db. SWR

exceed

are

directivity

using

the

minimum

30-db

+ db

30-db+

reading

METER

a

INSERT

100B
ATTfNUATOR
TO

THIS

-1' I

I I

I

:THEN
(THIS

Check

setup

415

gainby20

Load

indications.Ifboth

are

meets

0 DB on high

questionable

make

above

and

maximum

from

db

HERE

CALIBRATE

SHORT

f-T-G

L---(OPEN

'__i V

SLIDING LOAD

and

connect

sweep

and

note

greater

the

directivity

Meter

proceed

singlefre-

procedure

db

maximum

end

Q<J

dB.

rate.

SWR

the

than

indi-

and

SWR

of

(6)

Repeat
and
minimum
ofthe

tenths
peated.
loss.
will
a
load.
dicate
imum

h.

The
directivity
Paragraph

(1)

The
the
30 db +
30 db +

(2)

37.4-32.5=4.9

(3)

ReferringtoFigure
tors

(4) Adding

sulted

minimum

the

above five

readings

corrected

of a db when

This

The

represent

mismatch

The

which of

reading

followingisan

measurement

18g:

minimum

maximum

2.5

7.4

are

2.1

minimum

in

the

readings:

32.5

32.5

(5)

(6)

Sliding
from

The
the

(a) SWR

27.5
(b)
(c)

and
(d)

Load

777D.

above

procedure

following:

Meter

and

30.0
Subtracted
Correction

18.0

db.

Correction

27.5+1.2=28.7

(e)

The

previous

were

34.6

and
readings
Load
introduced
no

were

return

between

appreciable

34.6dbreadings
of

the

mismatch

34.6dbreadingisknown to
tivity

of the 777D

and

maximum

steps.

(step4)will

minimum

the

above

readingisthe

other

corrected

the

directivityofthe 777D

error

between

only

valueofthis

the

first

values

is

actual

made

SWR

Meter

SWR

Meter

db =

32.5db(minimum

db =

37.4db(maximum
db.

7,

the

and

13.3

db.

readingtoeach

following

db +

2.1

db =

db +

13.3

loosened

slightly

when

readings:

db).
readings:

factors

factors

30.0=27.5=2.5

from

addedtominimum:

db and

corrected

45.8

db.

knowntorepresent

loss

since

the

the

coupler

effect.

However,

indicated

connection.

under

measurement.

Model 777D

measurements

Oneofthe

readings

agree

within

corrected

with

procedureisre-

Sliding

the

Load

minimum

coupler

return

reading

and the

readingisto

setofcorrected

the

777D

directivity.

single

frequency

following

reading

reading

was

was

steps

2.5 db and

7.4

reading)

reading).

two

correction

correction

corrected

34.6

db =

repeated

+7.5db

Figure

db and

45.8

db.

and

drawn

and O.Odb

minimum

resulted

7:

1.2

27.5+18.0=45.5
minimum

The

45.5

mismatch

the

mismatch

and

readings

and

45.8

the

Sliding

connection

the

load

the

28.7

Therefore,

represent

the

direc-

one

afew

plus

in-

min-

777D

of

db;

fac-

re-

away

in

(or

db.

db

db

db

had
and

effect

the

(3)

RefertoFigure
factors;

(4) Add

(5)

minimum

s~ar~~;

Loosen
being

careful

slightly

correction

readingtoeach

Sliding

loosen

7 and

determine

factors

= and

correction

~+

db + db.

Load

center

nottorotate

connection

conductor

center

to 777D.

two

~

correction

factor

lock

and,

conductor,

19. SWR CHECK.
MAXIMUM

a.

SetupequipmentasshowninFigure

MAIN

LINE SWR:1.2:1

Note

The
should

b.

Set

modulated

Sweep

Sweep

Oscillator

and

notbeconnectedtocommon

single

Oscillator

frequency

fora1000-cps

RF

the SWR

output.

9.

Meter

ground.

square-wave

02114-4

Model 777D

16

12

10

CZl

o

~

!oJ

8

u

Z

!oJ

a:

!oJ

~

6

o

Page

5

2

o

SWEEP OSCILLATOR

ALe

II

SLOTTED LINE

Figure

LOW

FILTER

9.

PASS

SWR

Check

Figure

SWR

SLIDING LOAD

8. Signal

METER

o

1710-A-"

Separation

db NORMAL

scale

Chart

c.

Set any convenient

scale

d.

Slide

Slotted

indicationasnear

tionaspossible.

e.

Phase

SWR-scale

f. Switch

the

indication.

SWR

1.0indicationonSWR
g.

Slide

Slotted
dication
ing.

and

Record

phase

reading.

h. Remove 777D
LoadtoSlotted
Sliding

pIer

not

urement

1.

SWR

exceed

Load.

Divide

reading

specification).

this

ambiguity

reference

..

Line

carriagetoa

the

Sliding

Load

MetertoEXPAND

scale.

Linetoa

Sliding

from

Line

using

Measure

and

obtainedin

quotient which

duetoSlotted

on SWR

minimum

center

to

of the

obtain a

slotted

scale

maximum

Load

foraminimum

setup

appropriate

record

and

SWR

SWR-scale

connect

connector

ofSlotted

stephby1.2 (the

The

readingofstepgmust

accounts

Line

residual

Meter

40-

SWR-

sec-

maximum

and

set

read-

Sliding

Line.

cou-

for

meas-

SWR.

a

in-

on

02114-4

Page

6

Table

2.

Recommended

Test

Equipment

Mode1777D

Instrument

Low-Pass

Sweep

Oscillator

SWR

Meter

Low

Power

Termination

Fixed

Attenuator

Shorting
Directional

and

Crystal

Type

Filter

Plug&Jack

Coupler

Detector

Critical

Frequency

Rejection:

Frequency:
Power
Leveled
Residual

Frequency:
Calibration:
Accuracy:
Sensitivity:

Frequency:
SWR:
Power

Required:

Attenuation: 10 db
Frequency

TypeNmale

Frequency
Frequency

Sensitivity:

Specifications

Cutoff:

40 db

2 - 4 GHz

Output: 3 mw

Output

FM:

Less

1000

Square

±O.

2 db

0.1

1.9

1.05
Capacity:

2

Range:

plug

Range:

Response:

4 IJ.v/

2.2

GHz

4.1

GHz

minimum

Capability:

than30kc

cps

±2%

law

IJ.V

- 4 GHz
1/2

W

1.9

- 4 GHz

& N

Female

1.9

- 4 GHz

±O.

IJ.w

CW

±0.3

2 db

db

peak

Jack

Check

All

All

All

All

All

(10-db)

Directivity

Directivity

Model

cFj)

360C

cFj)

360D

cFj)

692A/B

or

cFj)

8692A/B

cFj)

415E

or

'5iJ

415B

cFj)

908A

cFj)

8491A Opt 10

Weinschel

cFj)

11511 A and

diitJ

11512A

cFj)

787D

(2.2
(4.1

GHz

1-10

Sliding

Slotted

Crystal

Load

Line

Detector

Frequency:1.9 - 4 GHz

Frequency:

SWR:

Output:

Main

Standard

Frequency:
Frequency

Square

±O.

5 db

up

to 50

1.04
Detected

Line

Law

for

mv

1.9

- 4 GHz

Connectors:
Type

N

1.9

- 4 GHz

Response:

Tracking:

power

levels

±0.5

Directivity
SWR

SWR

Coupling

Directivity

(1)

(2)

~

cFj)

906A
907A

805C

423A

or

02114-4

Model 777D

eference

Dest

tion

~

stock

No.

Table

3.

Reference

Designation Index

Description

7

Page

7

*

Note

9

8

1250-0909
1250-0909
1250-0909
1250-0816

08740-2100
5020-3296
1460-0297
5020-3297
5020-3298

08491-6000

4

3

Figure

CO~L

COUPLING
OUTER

SUPPORT
CENTER

INGSLEEVE}

INNER

15.

CONDUCTOR
CONDUCTOR,CONTACT

BEAD

CONDUCTOR
SPRING
CONTACT
CARTRIDGE
CARTRIDGE

Connector

NUT

ADAPTER
ASSEMBLY

Assembly

CONNECTOR

ASSY

MECH~NISU

100B

1140A-A-7

APC-7

02114-4

FIGURE15CONNECTOR.

#

See

list of

abbreviationsinintroduction

CARTRIDGE

to this

section

ASSEMBLY

~

MANUAL

MODEL 777D

DUAL DIRECTIONAL

CHANGES

COUPLER

MAKE

ALL

•

SERIAL

INSTRUMENT

NEW

ITEM.

PREFIX

CORRECTIONS

SERIAL

OR

NUMBER

IN

THIS

PREFIX(3DIGITS)ORSERIAL

MAKE

3088 and above ERRATA

~04875

and

above

ERRATA: Pa.ge

1.

~

Table

Change

FREQUENCY RANGE: 1.9to4.0

~CHANGE

1:

Page1,Table

Change

Specificationstoread:

MAX SECONDARY LINE

Operating

MANUAL

ACCOROING

MANUAL

1 & Change 2

1.

Change

1.

Note

Serials

Printed

CHANGES

May

16,

TO

ERRATA

NUMBER(8DIGITS)

SERIAL

BELOW.

Specificationstoread:

GHz

SWR:1.3

3088

1967

AND

and

THEN

MAKE

PREFIX

above

CHECK
ANY

OR

NUMBER

THE

LISTED

FOLLOWING

CHANGEIS)

MAKE

TABLE

IN

MANUAL

THE

FOR

MANUAL

CHANGES

YOUR

.

~CHANGE

2:

Page7,Table

Disregard

this

3.
information.

6

January

69

SupplementAfor

00777

-902

PRINTED

IN

U I A

ADDENDUM

CONNECTORS

SHEET

Hewlett-

Packardisin the
instrumentsofthis
of

the

connectorsonthis

MALE
FEMALE

LABEL

These
compatible

Because
separationtoprevent
Hewlett-Packard

new

of the

connectors

with the

Do NOT

Packard
conductor
adapter
"precision"

close

under

process

model

to a type

instrument

are

compatible

Hewlett-

Packard

attempttomate

"precision"

willbedamaged

madeofstandard

coupling of

damagetothe

part

number

of

changing

compatible

are

of thlb new type.

-

No

slots

-

Gold-plated
"Mates

with

with

"precision"

male

connector.

inner

conductors

equipment.Agauge

00805-602.

over

the

"precision"

with the new MIL-C-39012

These

in the

male

outer

conductor.

inner

conductor

MIL-C-39012

MIL-C-71B

male

(except

Connectors"

connectors.
Type

CAUTION

these

new

connectors

TypeNconnectorsasthe

due to

Type N

the

forced

connectors

all

connectors

set

for

Type N

connectors

specification.

connectors

788789)

also.

However

connectors.

with

the

Hewlett-

center

fit. Use

with

an

this

shouldbechecked

this

measurement

usedonprevious

Oneormore

canbeidentifiedasfollows:

they

are

OT

for

contact

is

available

from

)

Service
nectors
mate

Note 774D-1.
are

on what

with which.

A

..

obtainable

instruments.

measuring

0.207

tools.

MIN.

from

how to

etc.

your

recognize

nearest

Hewlett-Packard

andormeasure

field

the

connectors,

B

office.

..

0.207

details

which

0.063

0.066

1

MAX.

what

con-

connectors

MIN.

MAX.

16

Jan

67