HP 150-2000 Instruction Manual

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DUAL CHANNEL

DC AMPLIFIER

MODEL 150-2000

1M

-150-

2000-1

INSTRUCTION

MANUAL

HEWLETT

_

PACKARD

1I~=

SANBORN

DIVISION

SAl'ffiORN

DUAL

CllAJ..'rnEL

DC

AMPLIFIER

MODEL

150-2000

TABLEOFCONTENTS

Paragraph

Page

1

2

)

4

5

6

?

8
9

10

11

12

1)

14

Functional

Description

Tabulation

of

Characteristics

Operation:

General

Procedures

Operation:

Starting

the

Dual Channel

DC

Amplifier

Operation:

Calibrating

the

Dual Channel

DC

Amplifier

Operation:

Recording

with

the

Dual

Channel

DC

Amplifier

I-iaintenance:

Adjusting

the

DAl4PHTG

control

Maintenance:

Channel

Identification

Maintenance:

Tube

Data

Maintenance:

Fuse

Data

Maintenance:

Indicator

Data

Maintenance:

Plug-in

Capacitor

Data

j,iaintenance:

Signal

Connector

Data

Maintenance:

Name

Plate

Location

1

1

2

2

2

:3

J

4

4

4

5

5

5

5

i

SANBORlJ

DUAL

CF.AlHiEL..DC

AMPLIFIER

140DEL

150-2000

3.

OPERATION:

GE

JERAL

PROCEDURES

There

are

three

basic

procedures

in

operating

the

Dual Channel

DC

Amplifier:

STARTING:

CALIBRATION:

OPERATION:

This

includes

the

warmup

period

and

connecting

the

signal.

See

paragraph

4.

An

accurate

recording

depends

on

proper

calibration.

The

standard

procedure

is

given.

See

paragraph

5.

After

starting

and

calibrating,

the

operation

is

straight-forward.

See

paragraph

6.

4.

OPERATION:

STARTIHG

THE

DUAL

CRAN1-JELDCAi'iPLIFIER

1.

Set

each

RANGE

switch

to

OFF

and

each

P01"~R

switch

to

ON.

Allow

5

minutes

warmup

for

best

stability.

2.

Connect

each

signal

with

Amphenol

2-contact

plug,

Sanborn

Ho.

10B2-1~i.

Terminal

1

is

the

signal

terminal,

and

terminal

2

is

ground.

Note

that

the

signal

source

impedance must

be

small

in

comparison

with

1.15

megohms

if

the

source

impedance

is

to

be

neglected.

5.

OPERATION:

CALIBRATIFG

TliE

DUAL

CHA;mELDCAHPLIFIER

1.

After

warmup,

make

available

an

accurately

measured

d-c

calibration

voltage

between

two

volts

and

200

volts

as

convenient,

from a

source

having

the

same imnedance

as

the

signals

to

be

recorded,

if

this

impedance

is

not

negligible

with

respect

to

1.15

megohms.

2.

Set

the

RANGE

VOLTS/CM

switch

to

approximately

half

the

calibration

voltage.

3. Apply

the

calibration

voltage,

and

adjust

the

GAD:

control

for

a

deflection

represented

by

the

formula:

Deflection

=

~~bratio~

voltage

E

sethng

2

SANBORN

DUAL

CHANNELDCAMfLIF

JER

MODEL

150-2000

6.

OPERATIO~T.

RECORDING

WITH

THE

DUAL

CHANNELDCAMPLIFIER

1.

After

warmup and

calibration,

set

the

RANGE

switch

to

OFF

and

set

the

stylus

base-line

with

the

POSITION

control.

If

the

signal

has

both

positive

and

negative

values,

set

the

stylus

near

mid-

scale.

If

the

signal

is

of

one

polarity

only,

set

the

stylus

near

one

edge

of

the

recording

chart.

2.

Now

turn

the

RANGE

switch

to

the

right

until

the

signal

gives

a

reasonable

stylus

deflection,

and

start

the

Recorder

in

motion.

Set

the

STYLUS

TEMP

control

for

the

best

definition.

Normally

a

slight

increase

in

temperature

improves

the

definition

when

recording

high

frequencies.

Writing

the

RANGE

setting

and

paper

speed

on

the

chart

avoids

confusion

when

interpreting

the

record

later

on.

7.

MAINTENANCE:

ADJUSTING

THE

DAMPING

CONTROL

This

adjustment

may

be

required

after

extended

operation,

or

after

a

tube

or

other

component

is

~placed.

1.

Applyasquare

voltage

pulse

to

the

input

withavoltage

supply,

potentiometer,

and

switch

circuit.

2.

Adjust

the

potentiometer

and

the

RANGE

switch

for

one

centimeter

of

deflection

when

the

signal

pulse

circuit

is

closed.

3.

Adjust

the

DAMPING

control

for

the

best

possible

square

wave on

the

recording.

3

,I

SANBORN

DUAL

CHANNELDCAMPLIFIER

MODEL

150-2000

I ,

II

11.

ltfAINTENANCE:

INDICATOR

DATA

Symbol

~

Function

I 2001 NE-51

Indicates

that

primary

power

is

ap~11ed

to

the

Dual Channel

DC

Amplifier.

Sanborn

No.

30B-l

12.

MAINTENANCE:

PLUG-IN

CAPACITOR

DATA

Symbol

~

'Function

Sanborn

No.

572-217

572-217

572-217

Section

A:

filter

for

+360

volt

plate

supply

to

V2003, v2004.

Section

B:

filter

for

+360

volt

plate

supply

to

v2006, V2007.

Section

C:

not

used.

20/20/10

Mfd.

450

volt

insu-

lated

can.

20/20/10

Mfd.

450

volt

insu-

lated

can.

Sections

A and

C:

filter

for

-3.5

volt

supply

to

POSITION
controls.
Section

B:

filter

for

+270

volt

plate

supply

to

V2002, V2005.

20/20/10

Mfd

Sections

A,

B,

and

C:

filter

for

450

volt

insu-

-270

volt

supply

to

cathode

return

lated

can.

of

V2002, V2005.

C2005,

A,

B"

C

C2007

A, B, C

c2006

A, B, e

,

II
II

13.

MAINTENANCE:

SIGNAL

CONNECTOR

DATA

Description

Sanborn

No.

Amphenol

2-ccnt~ct

p~ug,

mates

with

INPUT

socket.

10B2-lFW

14.

MAINTENANCE:

NAME

PLATE

LCCATION

In

case

of

maintenance

problems

beyond

the

scope

of

this

manual,

contact

I

I

I

I

I I

Sanborn

Company

or

your

nearest

Industrial

Representative.

Give

the

serial

number

on

the

nameplate

of

your

Dual

Channel

DC

Amplifier.

This

name

plate

is

on

the

rear

chassis

wall,

and

is

visible

by

opening

the

rear

door

of

the

cabinet.

5

I

I

SANBORN

COMPANY

REPLACEMENT

PARTS

LIST

175

WYMAN

STREET

RPL-150-2000-2

WALTHAM

54,

MASS.

I

TEL:

TW.,.4-6300

SANBORN

DUAL

CHANNEL

DC

AMPLIFIER

MARCH

9,

1960

MODEL

150-2000

I

HESISTORS

I

SYMBOL

VALUE

(ohms) TOL(f

%)

WATTS

SANBORN

NO.

REMARKS

R2001

.1.J'K 5

30

53A-132J

wire

Wound

I

I

R2002

1.~

5

30

53A~132J

Wire

Wound

R2003

15K

5

1

5lD-153J

Composition

I

R2004

1.2

Meg

5

1

50A-125J

Composition

"2

R2005

10K

5

1

·)OA-W3J

Composition

I

"2

R2006

10K

5

.1

500-I03J

Composition

2

I

R2007

1.2

Me~

5

1

50A-125J

Composition

I

"2

R2008

1.2

Meg

5

1

500-125J

Composition

"2

I

F2CC9

12

Meg

5

1

50A-126J

Composition

"2

I

R2010

400

5

10

53A-401J

Wire

Wound

R2011 400

5

10

53A-40lJ

\.Ji

re

Wound

I

R2012

27K

5

1

5lD-273J

Composition

R2013

68K

5

1

5lD-683J

Composition

I

R2014

47K

5

1

5lD-473J

Composition

R2015

.~.7K

5

1

50A-472J

Composition

I

"2

.ii2016

~

.•

7K

5

1

500-472J

Composition

"2

j

..:\~017

.1

Meg

5

2

52C-104J

Composition

1

R2018

1.2

Meg

5

"2

50A-125J

Composition

I

~2019

10K

5

1

50A-I03J

Composition

"2

R2020

10K

5

1

50A-103J

Composition

"2

R2021

1.2

Meg

5

1

500-J2.:J

Composition

"2

R2022

1.2

Meg

5

1

500-125J

Composition

"2

P-l

I

I

I
I

SANBORN

DUAL

CHANNELDCAlvJPLIFIER

MODEL

1S0-2000

Eu~'

l:n:CAL

PARTS

LIST--SCBEMATIC

lSO-2000-Cl

SUB.

S

RESISTORS

(Cont.)

SYMBOL

'¥."J~UE(

Ohms)

-

TOL.

(f

%)

WATTS

SANBORN

NO.

REMARKS

R2023

12

Tier';

5

1

5C.t.-126J

Composition

"2

R2024

2.S

Meg

1

1

SOJ-2S5G

Composition

"2

R202S

loS

Meg

1

1

SOJ-155G

Composition

2"

R2026

.S

Meg

1

.1-

50H-S04G

Composition

4

R2027

.25

Meg

1

1

SOB-254G

Composition

"4

R2028

.15

Meg

1

1

SOH-ls4G

Composttiun

"4

R2029

50K

1

1

SOH-S03G

Composition

"4

R2030

50K

1

.1-

50H-503G

(Iomposi

tion

4

R2031

2.S

Meg

1

1

SOJ-255G

Composition

"2

R2032

1.5

Meg

1

1

SOJ-15SG

COll\.positioll

2"

R2033

.5

Meg

1

1

50H-S04G

Composition

"4

I

,

R2034

.25

Meg

1

1

50H-2S4G

Composition

"4

R2035

1

SOH-1S4G

Composition

.1S

Meg

1

4"

R2036

50K

1

1

SOH-503G

Composition

"4

~

50K

1

1

SOH-503G

Composition

"4

R2038

.25

~leg

20

1

S6A-39

Hi-torque

..

"2

Linear

Taper

R2039

10K

20

1

56A-37

Linear

Taper

"2

R2040

2.5

Meg

20

2

56.A-S6

Linear

Taper

R2041

1.5

Meg

5

1

SOAB-155J

Composition

"2

R2042

1.5

Meg

5

1

SOAB-155J

Composition

"2

R2043 2.5.Meg 20 2

S6A-S6

Linear

Toper

P-2

SANBORN

DUAl...CuAl'J:r.r-tJ.DClUvlFLIFIER

MODEL

150-2000

£;LECTR1CAL

PARJS

LIST--SCHEI"1ATIC

l50-20GO-Cl

RUB.

5

I

I
I
I
I

I
I

!

[

r

I

[

I
I
I

,

r

!

I

SYl'ffiOL

---

v2003
v2004
v2005
v2006

V2007

E2001

F2001

12001
J200l
J2002
J2003
J2004
J2005

J2006
J2007
P2002
P2003
P2004
P2005

TUBES

(cont:l
DESCR1PrION
Type

6V6GT

Type

6V6GT

Type

6SL7GT,

Aged,

Tested&Selected

Type

6V6GT.

Type

6V6GT

MISCELLANEOUS

8-contact

Terminal

Strip

It

Amp.

SlOe

Blo.

Fuse

Neon

Bulb

12-Pin

Jones

Connector

Octal

Socket

Il-Pin

MIP

Socket

Octal

Socket

Octal

Socket

2-Contact

Amphenol

Connector

2-Contact

Amphenol Connector

8-Contact

Plug

II-Contact

Plug

(with

cap &

cable

clamp)

8-Contact

Plug

(with

cap&cable

clamp)

8-Contact

Plug

(with

cap&cable

clamp)

SANBORN

NO.
68A-4
68A-4
69A-6
68A-4
68A-4

64G-2

26B-l4
30B-l

lOCl2-2MX

10H8-2FX

lOBll-2FX
lOH8-2FX
lOH8-2FX

lOB2-2MX
lOB2-2MX
lOB8--lMWA
lOBll-2MW

10B8-3MW

lOB8-JMW

p-4

SANBORN

DUAL

CnANNBLDCANPWF'lER

MODEL

150-2000

~~ICAL

PARTS

LIST--SCHEMJT:r;g,J,]O-?OCO-Cl

SUB

•

.5

MISCELLANEOUS

(cant..)
SYMOOL
S2001
S2002
S2003
T2001
T2002
Y2001

C200l

DESCRIPI'ION
SPST

Toggle Switch

l-Deck,

8-Position

Wafer SWitch

l-Deck,

8-Position

Wafer Switch

Regulated

Power

Transformer

Filament

Transformer

Selenium

Rectifier

.879-.909

mfd

Capacitor

(Red Dot)

0847

- .878 mid

Capacitor

(Yellow

~t)

.816 - .846 mfd

Capacitor

(White Dot)

SANBORN

NO.

----

62D-15A
62B-16
62B-16
66B-23
66B-5

16B-7

5B-44A,

8B-44B
8B-44c

These

Capacitors

are

supplied

with

66B-23

Transformers.

When

used

for

Replacement

the

color

code on

the

capacitor

must match

color

code on

mating

transformer.

P-5

MAINTENANCE

MANUAL

for

SANBORN

DUAL

CHANNELDCAMPLIFIER

MO

DEL

150-

2000

-

CONTENTS

-

System

Trouble

Check

DUAL

CHANNELDCAMPLIFIER

Page

1

Trouble

Shooting

Chart

2

Periodic

Maintenance

5

Check

Chart

6

Voltage

and

Resistance

Chart

7

Component

Location

on

Resistor

Boards

8

SANBORN

COMPANY

Waltham,

Mass.

November, 1957

MM-150-2000-l

SYSTEM

TROUBLE

CHECK

SANBORN

150

SYSTEM

RECORDER

DUAL

CHANNELDCAMPLIFIER

Save

time

by

first

finding

whet~

the

fault

is,

by

following

these

steps

in

sequenct

1.

IS

THERE

ACTUALLYAFAULT?

Check

the

operator's

techni~ue

-

try

the

measurements

again

-

see

that

the

ope!

tor

isn't

trying

something

~he

system

isn't

built

for

-

check

line

voltage

and

frequency.

2.

IS

THE

FAULT

IN

THE

GALVANOMETER?

Power OFF: Check

that

there

is

no

roughness

when moving

writing

arm

with

finge

Power OFF: Measure

galvanometer

coil

resistance

at

galvanometer

cap.

Should

b.

in

vicinity

of

3200 ohms.

Power

ON:

Measure

voltage

across

galvanometer

coil

at

the

galvanometer

cap.

Check

that

32

volts

change

in

this

voltage

gives

approximately

10

millimeters

of

stylus

deflection

(12.5

divisions

on

narrow

Permapap

3.

IS

THE

FAULT

IN

THE

DUAL

CHANNELDCAMPLIFIER?

Connect

a low

test

voltage

into

one

channel

of

the

instrument

and

then

into

the

other

channel.

(Voltage

from a

1.5

volt

flashlight

battery

is

suggested.)

If

either

channel

is

defective,

and

the

other

channel

is

normal,

check

tubes

in

th;

defective

channel.

If

both

channels

are

defective

or

dead,

check

rectifier

Y20C

and

the

fuse

F200l.

4.

DID

THESE

STEPS POINT

OUT

THE

TROUBLE?

By

now, you

should

have

made a

start

at

localizing

the

source

of

trouble.

If

not,

the

trouble

may

be

system-wide,

or

may

be

impossible

to

track

down

by

thi~

method.

\~at

to

do:

use

the

Trouble

Shooting

Chart

and Check

Charts.

- 1 -

TROUBLE

SHOOTING

CHART

SANBORN

DUAL

CHANNELDCAMPLIFIER

MODEL

150-2000

This

chart

assumes

that

the

fault

has

been

traced

to

the

Dual Channel

DC

Amplifier.

SYMPTOM

Fuse

blows

each

time

instrument

turned

on.

Does

not

work;

tubes

do

not

light

Tubes

light,

but

no

oper-

ation

all

channels

No

,operation

one

channel

only,

other

channel

normal

.'.,.'hO

POSITION

control

will

not

move

stylus

over

entire

recording

channel

POSSIBLE

CAUSE

Defective

tube

Defective

condenser

Defective

transformer

Wrong

size

fuse

Blown

fuse

Loose

connectors

Defective

tube

Loose

connectors

Defective

tube

Loose

connector

Open

resistor

Defective

tube

Defective

condenser

Matched

resistor

pairs

out

of

tolerance

No

negative

bias

voltage

- 2 -

CHECK
Check V200l
Check

plug-in

condensers

C2006, C2007,

also

C200l

Check

T200l,

T2002

Must

be

1.25ASlo-Blo

Check

F200l

Check

that

power

connectors

P2002,

P2Q03

at

chassis

top

and

rear

are

firmly

in

plaCE
Check V200l
Check

that

signal

circuit

connectors

into

J2004

and

J2005

are

firmly

in

place

Check

tubes

in

defective

channel
Check

that

signal

circuit

co

nector

into

J2004

or

J2005

is

firmly

in

place

Check R200l

or

R2002, R20l0,

R2011
Check

tubes

in

defective

channel(s),

including

recti-

fier

V200l

Check

C20n

Check

matched

resistors

I r

I

SYMPTOM

Stylus

stays

at

one

side

of

recording

channel

while

instrument

on

Erratic

stylus

motion

Low

sensitivity

Non-linear

POSSIBLE

CAUSE

Defective

tube

Leaky

condenser

Signal

overload

Intermittent

tube

Intermittent

rectifier

Loose

tube,

plug-in,

or

connector

Erratic

signal

Intermittent

circuit

element

Defective

tube

Improper

operation

Defective

tube

No

negative

bias

voltage

Mica

condenser

Low1ine

vo1tage

CHECK

Check

tubes

in

defective

channel(s)
Check

all

mica

condensers

If

stylus

returns

to

normal

with

ATTENUATORatOFF,

trouble

probably

coming

in

from

outside

the

instrument

Check

all

tubes
Check Y2001
Press

in

tightly

Check

signal

with

meter

and

oscilloscope
Check

with

meter

and

oscil-

loscope

for

intermittent

circuit

element

Check

all

tubes

Check

operating

technique

Check

all

tubes
Check Y2001, R2003, C2007A,
Check

mica

condensers

-

lea

age

across

or

through

them

can

alter

grid

bias

Check

that

line

voltage

is

within

limits

Defective

circuit

element,

Quick

check:

measure

for

giving

incorrect

circuit

approximately

1130

volts

at

voltages

6V6

grids

for

quick

check

c

proper

operating

voltages

Signal

- 3 -

Signal

having

high-frequenc

components

or

fast

pulses

n

not

show

on

the

recording,

but

still

drive

tubes

into

non-linear

region

I I

SYMPTOM

Drift

Unsatisfactory

frequency

or

transient

(overshoot)

response,

or

cannot

ad-

just

damping

control(s)

POSSIBLE

CAUSE

Drifting

tube

May

be

drift

of

Perma-

paper

Drifting

signal

Line

voltage

or

fre-

quency

Inadequate

warmup

Drift

in

high-frequency

signal

component

Defective

tube

Improper

adjustment

Leakage

CHECK

Check

all

tubes

See

Recorder

Trouble

Shootin

Chart
Check

with

meter

and

oscillo

scope.

See

if

baseline

dril

with

ATTENUATORatOFF

Drifting

widely

or

outside

limits

can

cause

drift.

ChE

with

meter

Warm

up

at

least

the

stated

five

minutes

required

High-frequency

components

~a.

overload

the

grids

and

still

not

show

on

the

record

as

a

signal.

This

causes

a

non-

linearity,

which

can

appear

as

a

drift

if

the

high-fre-

quency

component

drifts.

Che<

with

meter

and

oscilloscope

Check

all

tubes
Re-adjust
Leakage

across

(or

through)

R2009-C2004

or

R2023-C2010.

If

dirty,

clean

with

carbon

tetrachloride

or

equivalent

Unsatisfactory

control

of

trace

density

See

the

Recorder

Trouble

Shooting

Chart

Noise,

microphonics,

or

hum

Defective

tube

Defective

component

Noisy

signal

Loose

input

plug

or

con-

nector
Open

shield

connection,

or

ground

loop

- 4 -

Check

all

tubes

Check

circuit

with

oscillo-

scope

to

find

source

of

inte:

ference
Check

signal

with

oscillosCOf

See

if

baseline

becomes

clear

with

ATTENUATORatOFF.

Plug

in

firmly

Check

input

circuit

cabling

Quick

check:

Foraquick

check

on

operation,

set

POSITION

to

mid-scale

and

measure

from

grid

(terminalS)

to

ground

of

each

6V6

stage.

Should

be

appro

xi

mately

~130

volts.

to

indicate

normal

operation

of

entire

channel.

(Test

at

115

volt

line.)

Then

measure

from

terminalS

of

one

6V6

to

terminalS

of

the

other

6V6

in

the

same

channel;

should

not

be

more

than

a few

volts,

to

show

normal

operation.

PERIODIC

MAINTENANCE

SANBORN

DUAL

CHANNELDCAMPLIFIER

MODEL

150-2000

This

is

recommended

every

500

hours

of

operation,

or

every3to6months,

as

deter-

mined

by

experience.

1.

Replace

the

6V6GT

tubes

in

each

channel

- V2003, V2004, V2006, V2007. Use a

com-

mercial

tube

replacement,

or

use

Sanborn

replacement

no.

68A-4.

2.

Replace

the

5R4GY

tube

in

the

power

supply

- V2001. Use a

commercial

tube

repla(

ment,

or

use

Sanborn

replacement

no.

68A-43.

3.

Inspect

above-chassis

for

loose

tube,

controls,

plug-in

components,

and

connector

4.

Inspect

below-chassis

for

loose

resistors,

condensers,

terminal

boards,

etc.

5.

Look

for

evidence

of

overheated

components -

check

visually

and

by

smell

for

burr.

insulation,

transformers,

resistors,

condensers,

etc.

6.

Look

for

frayed

or

burned-away

insulation.

7.

Check

for

dents,

panel

scratches,

corrosion,

and

other

mechanical

abuse.

8.

Blowout

dust

and

dirt

with

an

air

hose.

9.

Go

through

the

steps

of

the

Check

Chart.

- 5 -

CHECK

CHARt

1.

Warm

up Dual Channel

DC

Amplifier

at

least

five

minutes.

Line

voltage

at

115

volts.

Perform

following

tests

on

each

channel

of

the

instrument.

2.

Check

that

POSITION

control

will

move

stylus

across

entire

recording

channel.

Set

stylus

20

divisions

above

bottom

of

chart.

3.

Insert

signal

from

1.5

volt

flashlight

battery

and

series

switch.

Set

RANGE

swit

toIVOLT/CM

and

GAIN

control

full

right.

Check

for

at

least

17

mm.

stylus

deflf

tion

(21

divisions

with

narrow-channel

Permapaper).

Set

GAIN

for

15

divisions

deflection.

4.

Intermittently

operate

switch

and

adjust

DAMPING

control

for

best

possible

squar

wave

on

the

recording.

Leading

edge

of

square

wave

should

have

fast

rise,

with

no

overshoot.

5.

Insert

signal

from

audio

oscillator,

with

Dual Channel

DC

Amplifier

channel

set

to

10

divisions

peak-to-peak

recording.

Response

should

be

as

shown

on

characte

istic

curve

in

Instruction

Manual.

- 6 -

Ii

I

I

II

II

I

11

II

Ii

II

~

I I

I

Ii

~

I

I

I

~

I

[

~

II

II

j

VOLTAGE AND RESISTANCE CHART

SANBORN

DUAL CHANNEL DC AMPLIFIER

MODEL 150-2000

i

1

!

I

,

TUBE

1 2 3

I

4 5 6

7 8 9

..

\12001

30K*

3.5K

3.5K

30K*

(4to6)

(6to4)

+38SV

800VAC

800VAC

+385V

V2002

700K

1.6M

3K

850K

1.6M

2.9VAC

2.9VAC

+130V

.22V

-3.5V

+130V

.22V

V2003

3.4VAC

90K*

90K*

1M

4SK*

6K

3.7VAC

3.1VAC

3.4VAC

+360V

+360V

+130V

..

V2004

. 100K*

lOOK*

1.2M

4SK*

6K

3.5VAC

3.9VAC

3.9VAC

3.4VAC

+360V

+360V

+130V

._--

V200S

1M

1.4M

3K

1M

1.4M

2VAC

2.9VAC

2.9VAC

+130V

.12V

-3.5V

+130V

.12V

---

V2006

4SK lOOK·

100K*

l.3M

4SK*

6K

3.4VAC

3.6VAC

3.6VAC

2VAC

3.4VAC

+360V

+360V

+130V

V2007

4SK

100K*

100K*

1.4M

4SK*

6K

3.4VAC

3.2VAC

3.2VAC

3.4VAC

+360V

+360V

+130V

--

_.

Readings

taken

with H. P. Model 4

lOB

VTVM.

A

1.5K

30W

resistor

across

pins

3-4,

5-4,

6-7,

8-7ofjack

2001tosimulate

galvanometers.

VOLTAGE READINGS

POWER

ON

NO

SIGNAL

ATTENUATOR

OFF

POSITION

CENTER

DAMPING CENTER

MEASURE FROM EACH TUBE SOCKET TERMINAL TO GROUND

RESISTANCE READINGS:

POWER

OFF

NO

SIGNAL

ATTENUATOR

OFF

POSITION

FULL

CLOCKWISE

DAMPING

FULL

COUNTERCLOCKWISE

MEASURE EACH TUBE SOCKET TERMINAL TO GROUND

·CHARGING CAPACITOR _ 7 _

SANBORN DUAL CHANNEL

DC

AMPUFIER

MODEL

150-2000

Gi

C2008

r

~

H2019

~

G-I

H2021

ro

G-1

H2022

H:)

G1

C2009

te

G-fH2020

f-E).

G-i

H2018

t--0

-~-

__

9\

I

\

.' II

\

i

(

\

I

1

)

I

I

~I

I

~I

I

0

~I

....

,

1

0

1

I

....

I

I

I

I

I

I

I

I,

\

I

I

I

\

I

i

\

I

,

I

I

I

J

\_--

I

-<5--

<b

E2002

E2002

~

~

E2003

BOTTOM VIEW OF CHASSIS

G--1

H2016

t-0

G--i

H2015

r-e

G--1

H2014

l-e

G---l

H2013

f-8

G-1

H2012

t-0

Q---+

H2004

t-{)

G--i

R2006

~

0-{

C2003

~

~

R2008

~

G--l

H2007

r-E)

!~

C2002

~

E2003

COMPONENT LOCATION ON RESISTOR BOARDS

_ 8 -

-

NOTES

. roond.

I +Denoles

ChassiS

0

81W

resistors

2Al20,10,2,

RW2

'os

..elIas R2009, R2008,

R

2004,

R2007,

R2022

R2018,R202I.a

or.5%lol.rallOt•.

Rnl.tar.

R~~~:"'~~ltIOfl.

R2037

or.

'Y.

C20048C2010

or.

5 •

capOCllo".

measured

:::hY~~I:;ct

to

etalile

qraund

---.

(.lI)u

',.

e

Ie

\;.

..

\

.~_

..

I?

2003

P2004,

p2005,a

P2002

J2001

~\

~

J2006 a

J2oo7

J2003

°

()

o

III~O

0:

000

0d

,'0

J2OO2,J2004,8 J2005

Stylus

T.mp.

R2037

SO

K

RANGE

VOLTs/eM.

Golv•B'-

,

Golv

'B'~

,

Gel.

'A'-

•

Golv

·A·

...

•

elv 'A'

C.T.

'

Gelv

'B'

CT.

:

10V

AC

60'1J

{I"

S

ylus

: B:Heof :

Stylus A Heat •

St/tlS

'"'.eat

Convnon

~

-unr.e 's· Input