BK Precision 1660 Service manual

Triple

B&K 1660

Output

DC POWER

SUPPLY

dlt*rur#ffi.i'

TEST INSTRUMENT

B&K 1660

waRl||ltc

SAFETY

Normal

-

electrical
voltage
thlougb the healt
ac

llrs should
curlent under
cause suc-h

habits
higb

voltage, and
contact rpith
know and obselve

1. There
supply.
powe!

use of

shock because

plesent.

is

be consideled
celtain conditioDs.

voltage

should include

a high voltage.

is little

Hoeever,

supply

a. If

b. If the equipbeDt

c. If

the equipment
hazard
equipment
observed.

high

floated
volta_ge

llot float
lespect

ttre equiproent
tage
voltage
retaiD

test equipment

testing

An electrica.I

wilt

stop most hu6an

can laore

all accepted plactices

that wiu
the followirg

dange!

that can

exists

voltage

to the potential

Inay

tbe po.re!

to

ilr aIly

capacitors

high

stee!

thele

unless

does

aot remove

in ary of
appea!

chassis or

oI

voltage

exposes you

ncust

sohetioes

shock

heartbeats.

dangelous

easily

current

You

safety plecautions:

of

electrical

ale sevelal

cleate

utde! test

tbe

under test

at

supply

earth

under

its circuits

before

long

and

Higher

ploduce

will sigtrificantly

a high

equipEent

the hazard),

its cilcuits),
at

the

unexpected points

output

ground.

test

is

unde!

baking

after

the equipraeDt

to a celtain

be perfolrbeal

causiDg

hazardous

voltage poses

a Iethal

that

will

a\eay

is the

is

flom

shock

voltage

point

,off',

IroE the dc

other possible

shock hazard;

"hot

is uDplugged

"powered

the

of connection,

to more tban

(and

nornra.I opelatiotr),

coDnectioDs or

amor,rnt of

\phere

l0

milliamps of

Voltage as Iow

sin-ce it can

an even

culreDt.

prevent

you!

leduce tbe lisk

chassis,,

o!

the

upi

polve!

in defective

tbat equipEent

is tuDed

contact

healt in case of accialental

output of this

test

tvDe. a

plecautions

(arxd

supply

tests.

curlent
as 35 volts
proaluce

gleate!

your

rrith
facto!

conditions using

selious shock

(usi

turning

that

equipEent

outputs

Remeober

equipbeot.

100 voit;

uses high vol_

discbalge higb_

SoEe cilcuits

off,

dangel floh

exposeil

tltleat

normal

ot Jtep

peak

high
pass

to

dc o!

a lethal

work

exposeal

if

power

off

g

uses

may be

that high

with

be_

you

this

the
are

Do

Z.

Use olly a poladzed

cha6sis,

reduces dange!

3. DoD't
neceasaly,
cilcuits.

4. lf

possible,
cation of
appear at rEerpected

case, and ground

expose high

Discbarge

its high

3-wi!e ac

telrainal

florD

electlical

vottage

T[ra off

higb-voltage

faEiliafize youlseu

voltage points.

{codtinued

neetllessly.

equipEe[t

poiuts

in delective

outlet.

ale conlected

shoclg

Remove

while

oa inside

Eaking

capacitols
with

the equipE

However,

This assures

to a

bousiags

test coDnectioDs

after

reEo\ring

ent beiDg testeal

letlembe!

equipmert.

rear

cover)

that the
good

aDd covels

powe!.

tbat high voltage

powe!

eartir

Stounil

only whea

in higb-voltage

and the

supply

anil

lc_

Dlay

lnstruction

B&K 1660

Manual

for

Jt1}lr,

Model 1660

Triple Output

DC

POWER SUPPLY

s(t^Ect--,t

MAXSE9 TNTER

ATONAL

CoPrr.

H( PEECES'-,J

MAGg

w

6470

TNTEFNAIIONAL

Corlland St . ChlcaSo,

coFP.

lL6O635

TABLE OF CONTENTS

B&K 1660

page

TESTINSTRUMENTSAFETY.

INTRODUCTION

FEArijllES
sPljcii::a-.!
CONTROLS

General
4-6.5
Ma.ster Suppl-v

Slave Suppl-v

r:lN:-i.

INDICATORS.

AJI

Conttols And lndicators

\'supply Controls And lndicators.

Controls ,{nd lndicatols .

Controls And Indicators

Rea-l Panel Controls ..

CPERAT]NG

Safet-v
Equipment

lndependent

Series Tracking
Pa-rallei

,1-6.5

INSTRUCTIONS

Prec:.rrtions

Precauiions

Use Of

"Master"

Opelation.

Tra.cking operaiion

V Poirel Supply Opelation.

APPLICATIONS

Generat..
Electronics

Servicing .
Electronics Manufacturing
Elec tlonics

Design Lab

. . . . .

Electlonics Education.
Battery
Split

Charging

SuPPI-\'

"S1ave"

Or

.

. , . .

. . . , .

SupPl]' ...

..

, . irside

front

., ".......I

.... .,,'4

..... -...

........

.........5

. . . . . . . . 5

. . . '

......

......

.....,,,,,9

...... ,9

.............9

..

.. ......13

.....'.16

.'......''.'.19

......,..,.

...'.........20

............20

.........20

. ' ' ' '...21

..... -.. ZI

.,..........21

coier

.......3

.. 5

.

., .

.?

'. . . .. .8

...

ZO

. ...,Z0

9

MAINTENANCE.

Replacement

Fuse

voltage

Line

Conversion

Adjustments.

lnstrument

Repai! Service.

WARRANTYSER\TCEINSTRUCTIONS....

UMITED ONE.YEAR

WARRANTY

.,.....

"..25

......

',.,...
..' .

--.. 25

...--26

... .'.'.30

......31

.............32

25

INTRODUCIION

B&K 1660

Tbe B & K-hecisi@ Model 1660 Triple
Output DC Powe! Supply is a higb
genela.l purpose
two supplies
ong with a 4-6.5 volt dc
supplies are adjustable with
fine voltage
and are capable of current output of
0-2 arops. The 4-6.5 v supply
output of 0-5 a.Eops, allowillg it to hanille ex­tensive digita.l Iogic circuitry. Two la.rge
palel-Eoormted
tor eithe! the
o{ each supply.

The
independendy or in
r:oodes. In the
supply
supply, MaxiEuo
supplies can still be set independently \rhen in
the selies tlackitrg
seri€s tlacking
supplies a.!e connected in se es, allowing a
singie output of 0-60
patallel

connected
gle

constant
caiioDs. The clossove! floB constant voltage
to constant
autoEatic. LED'S indicate tbe
voltage) or

operation. In constart

curlent limit loay
ations cause

lioit, the

lathe!
adjustable frorD 5% to 10070 oI b:axixouEr. IrI
constant current applications, the
voltage may be
cause cuJrent to
value,
oDeration at the Dreset value,

digital logic circuitly, The 0-5 allp capacity

tracks the voltage of the

0-30 V output

Both 0-30

tha!

the

The 4-6,5

with a 0-30

contlols

output

two 0-30 volt

tlacking

together iD

voltage o! constart cutrent appli-

cu.!!ent modes is sEooth a.nd

"CC"

the c{rlent to reach the

unit then regulates output cu!]ent

output

unit reverts to legulated voltage

power

dc

LED oete! displays caD moEi-

selies tlackilg Eode, the Slave

curlent settidg of the two

mode

Eode,

at up to 4 amps.

volt

supplies

(corBtant

be

voltage.

preset.

dlop below

V supply is ideal for

soulce. It

volt dc output and

output. The 0-30 v

both coarse aJId

precise

for

has a current

curtent

supplies can be opelated

one of

operating 6ode, In the

V at up to 2 aDcps. In the

parallel,

preset,

or output voltage

two

Maste! aIId Slave

the

the two supplies ale

allo\ring a sin-

may

"CV'

cu!!e!rt) l3ode of

voltage applications, a

when

Cullent liloits are

When load valiatioas

the

quality,

provides

settability

tlackilg

Ma.ste!

be used itr

(coDstant

va-ri-

load

preset

rDaxirDurD
legulated

powering

allows tbe supply to
cuits, Built-in ovelload
matically liEits to cutiebt output to a Eaxi­loull] of 5 aEps. An indicato!
supply is ovelloaded,

The Model 1660 exhibits excellent

Iation ard low

design

cuit
greatly

low output

dedtal daEage to the
ploper

curreat lioitilg
powered,

earth
comections. Wbed needed, the
Iality llay be stlapped to
polarity
tage. Additiona.Uy, the two 0-30 volt supplies
can be used as a
tive
aegative voltages and a cotDllon
one
of these coiligurations
datching
voltages.

especially tbe triple output
featues, make it an ideal
powe!

catioas. It can serve as a single
voltage
ply,
equipEent. It can
taneously
ation.
tages
may
power
temoved
evafuated vrhile
Drototv'De cilcrdt to

leduces intelnal

Revetse

coDnection to a.a extelnal voltage, and

as weII aE the

output is isolated flou

The

glound,

!!ay be floated to an extelnal vol-

voltages and

positive,

(tlacking)

features aJId versatility oI the unit,

The

supply for engineering lab appli­powe!

fo!

breadboard

valying voltages for ctcuit eva.lu-

It can

fo! evaluating diffelential aEplifiers. It

be used as a battery

individual circuit boalds o! caril6 while

llom the systeh, Its output ca'I be

pple

incolpolates

voltages.

polarity protection plevents

plotects

which

otre negative, and a cor!6on. AII

source, including tbe

provide

be used

charactelistics. The ciF

pre-legulato!,

a

powe!

poi/ef

the equipEeDt being

power

p€lmits

"split

supply" with two

a comDon negative, two

ca]l be

or dif f

and

Fotot]?e

provide

tracking

poweling

determine the cilcuit's

for large ci!-

protection

lights

supply

supply.

full

glound,

used

eling

genefal purpose

single o! sillul-

eliminator,

a bleadboald or

when

dis6ipation

lroE iE-

chassis

flexibility of

(+)

o!

o! either

positive,

with

{independent)

and

tracking

o! multi-

bias

circuits and

(+)

and

(-)

auto-

the

regu-

whic-h

acci-

alrd

(-)

po-

posi-

eithe!

suF

vol-

or

at

or

to

INTRODUCTION

B&K 1660

powel

quality

suppty requi!emerts.

Its labo!atory

specifications will loeet most engi-

neering labo"a.tory requi!ements.

The same featules that make the Mod€l

1660 a

good

choice fo! a]} engiaeeling lab also

Dake it a
state

good choice

electronic applications.

cations include selvice

fo! dost other solid

shops;

duction testing of coDrponents'

collplete equipment;

home use bv electronic

and

fo! school labolatolies,

hobbyists.

These apPli_

industrial

Pro-

assembli€s, and

FEATURES

B&K 1660

TRIPLE OUTPUT

Operates
Eacb
isolated

,{

ONE

Husky 0-to-5
ideal
circlritly,

extensive

TWO O-30

Master and
variable
and fine controls.
current

as thlee separate

has floating output

flom the other

TO 6.5 V SUPPLY

amp 4-to-6.5

fo! use

with Dost di$tal logic

Adequate cuilent capacity

circuitly.

VOLT SUPPLIES

Slave supply are continuously

ovel 0-to_30

Each supplv has a Z amp

capacity.

and is completely

two.

volt

range with coarse

UMQUE TRACKING FEATURE

The two

0-to-30 V supplies can
so that the Slave supply tracks
supply. Outputs

positive

voltages
two negative
tive, or one
a neutra.l

common.

SINGII G6O

Series
and Stave

tracking feature

supplies

V SUPPLY

can be strapped

with a comDon

volLages

dith a common

positive and

allows use of Master

as one 0-to-60 V. Z alnp

one negative with

supply.

SNNGIJ

O_30 V 4

Palallel

Maste! and

supply

(through

CONSTANT

with

AMP SUPPLY

tracking

feature allows

Slave supply as

a :1 amp current capacity

MasteF

output terminals)

VOLTAGE OR CONSTANT

CURRENT

The

Master and

regulated dc

voltage output or regulated

slav-

power

supplies.

volt suPpty is

for

be operated

the Master

fot two

negatrve)

posi_

lise of

a 0-to'30

.Lpplias pro! d-

dc

.urent output- Crossover is sEooth

DISPLAY

LED

Two large, easy-to-read

displays monitol outPut
cu.relrt of aU three
meters allows
voltage
Slave supplies

visiblilty in

auows

LABORATORY

Excellent

LED INDICATORS

Identify

PRE-REGULATOR

Limits
reliability

ISOLATED

Either

OVERI-OAD

Fullv

to 100%
Vaste! and Slave
under

V

REVERSE POLAR.ITY

Prevents damage

external voltage

HOOK.UP

,supplied

hook-up

supplies.

simultaneous

metering when

in tracking

bright

resolution

o!

loq

of 0.1 volt or 0.1 amp.

QUAIITY

!eeulation.

mode

of ope!ation.

1o$ tiPPle.

internal dissipation

and ef f iciency.

OUTPUT

pola.rity

be floated or

may

PROTECTION

adjustable cullent

of mdimurn output

supplies

test and the

er suPPlY.

Poq

PROIECTION

porter supplv

to

of revelse

CABLES

with three

sets of red

leads.

and

LED 3-1l2

digit

voltage or output

Use of two

current

M3ste! alld

use

oPeratioD.

light.

and

Good

Meter

{o! hiehe.

grounded.

limiting

(from

5%

curentl lor

protects

circurt

lrcrm

polaritv

ard black

SPBCIFICATIONS

B&K 1660

ITASTBR AND $../lVE SUPPLIT-S
outFt

OutFrt

Load

LiDe R*ulatioD 108

vortrge

0 v

{+0/-30

Curl€ot

(+0/-30

0 A

Regulatio!

<0.01%+

3 bV.

Rage,

mv)

to 30 v

Lieit

Rdge:

EA) to 2 A

(Cdstart

-

132 V

(3

+

+(3Vo

to 7Vo).

Voltage):

(Consta"r

Voltage):

<

0.01% - 3 bv.

Rittrtle

Recoeery

Tehlr

Load R€gulation

Lile Reguration

(CoDsteDt

<

I EV RMS.

TlEe

<

loo

ss'

Coclficieot

=

ppb/oc.

3OO

<

0.2Vo

+3

Voltag€): Peel Meter Accuract':

(Constart

(C@rtart

(CcE3ta[t

Voltage):

Voltage):

CrErent]:

mA-

108 - l3z

(c@start

v

CErent):

<

Rilple

O.Z7o

Cr|f!€ot

+3

E'A.

(at

108

V Io!

CoDstant

Crttfeot]:

<

3 IlA RMS.

Tbackiry

t1.Zqo

P&el lileter

i0.5% + 2

(S€ries):

+10

nV,

Accrracy

digits.

(volts):

b 1qo)'

--

Load Reeulatiod

ov

(0

=

l0

Lire RegutatioD

(C@start

to 5 A load)'

-

108

l3z v

Vottage):

(coEtaDt

VoltaSe):

<10

DcV.

Ripple A.!d Nobe:

=ZrbVRMS,

OvelYoltage hotection Thteshold:

Same as Maste!

Suppiy Mete!.

cENERAL
Poeer

po;'er

RequireEents:

110/1zo/220/z4o

vAC

CoDsurnptioD

ApproxiEately

320

!1070. s0/60 Ilz-

(FuIy

Loaded):

\4t'

hotection:

Revelse poladty

protection

liEiting.

DiDeDsiors

165 x

(E

:< Y r D):

315 x 381 bra

(12.4

x 15 x 6.5"),

E'eigbt:

10 kg

(22

lbs)'

and cur!ent

pdel

,F&5
OutFrt Volt.€e

Metet

% + 2 digits.

J0,5

V

SUppLy

4

Y

t57o

to 6.5 V

Acc|racr

RaDg€:

r5Vo.

(cEreDt):

TffiS,"Tff;?up

Two

ea.rth
Two 5A, 250V
Schematic

Ootionel

Fp-tO l6-amp test

ground
DiagraB &

Accessori€3:

bus

fuses

leads, I !ed,

stlaps.

(spares),

palts

leads

List,

(t

red, 1

I black.

black).

GENERAL

B&K 1660

CONTROLS AND INDICATORS

1. POWER
off, When
nally iuuEi ated

Z. TRACKING

button switches
oode, series
t!acking

a. When

(out),

dent

SLAVE

pletely ind€Pendent

anotDel,
When

b,

and

(out),

SERIES
mum
using the MASTER

tlols
of the SLAVE
tage
MASTER
roode
terminal
is connect€d
nal
This a]lo\rs the
used as

When both switches

c.

(in),

PARALLEL
MASTER
wiled
the

are set using
trols.

outputs

vidual

or

used

4 A capability,

(F30

3.

V/+6.5
TER/,1-6.5
switch is

CONTROLS AND INDICATORS

Ssitch-

powel is

Mode

mode

both

the

mode

Tutns

Power

on, sxitch

to

serve

as a

Seitch€s.

select INDEPendent

that

tlacking

follows:

as

mode, or

switches are

unit is

in the INDEPen-

arld the MASTER

power suPPlies are com-

the left switch is

the right

the r]nit is in

mode. In this

voltage of

switch is

the TRACKING

mode, maxi-

both suPPlies

VOLTAGE

(voltage

outPut telminals

at

supply ttacks

at the output

supplvl.

of operatiod

(red)

to the

(blackl

of the MASTER supPly.

teloinals

AIso. in

the

of the sLAvE supply

negative termi-

two suPplies

one 0- to-60

volt suPPIY.

ate engaged

the uiit is

in the TRACKING

rnode, ln this dode

SLAVE suPPlies

and

together in

maxilouE

palallel

cuirent and

the MASTER

MASTER alrd

The

can be used

(but

tracking)

just

the MASTER output

as two iDdi-

power

as a 0-to-30 volt supply

position'

V

Controls

V Ssitcb

V LED

in tbe G30

DisPkY.

and

on

is inter-

light.

Pilot

push-

Two

Parauel

disengag€d

ard

llom one

engaged

disengaged

is set

con-

voi-

the

of the

this

Positive

to be

both

and

voltage

con-

SLAVE

suPPlies

can be

with a

MAS-

wlen this

the LED

(in)

the
a.!e

display looniiors

when this

position.

V

Switcb- Selects

mode for the

the

.1.

supply,
tr-5

the 4-6.5 \' supply.

tors
A/V

meterirg
supply or

oD setting
When

read from

in the A

the

play. When in

tage is
LED

MASTER/4-6.5

5.
dis?tay

the O-30

supply

read

Dispray.

indicates

v

MASTER

(depending

MASTER

4'6.5 V SUPPLY
INDICATORS

'-'

6.

?.

Tedrinal

output
"+"

T€rniral

terminal

output terminal

8.

Voltag€

Level C€'rtrol.
voltage to!
terclockwise

4 V. Clockwise

voltage to a

clockwise

4_6.5

9.

tage to
cleases

(full

A OVERLOAD

5
load on
1arge.

MASTER SUPPLY
INDICATORS

(CoDstant

C.C.

10.
the

lights

ConstaDt

LED

MASTER

the

switch

disPlay

LED

the

current

MASTER

,F6.5

of

(amPs)

(F30

V supply

V/,1-6.5

position, cu.rlent

MASTER/,|6.5 V LED

the V

(vo1ts)

from the

v LED

voltag€

supply

on the

A,/V aid

CONTROLS

(Blact).

for 4-6.5

(Red)-

4-6.5 v supPly.

for

position'

MASTER/

Dispray. Digital

or cuffent

or the'1-6.5

setting

0.30

AND

Negative

V suPPIy'

Positive

Adjusts

4'6.5 V

!otation

supply, Fully

adjusts

rotation

maximuEr

rotation).

IDdicatot.

Volt suPply

CONTROLS

Crr'ledt)

becoloes

AND

Irdicator.

when MASTER

Cu$e$t

mode'

(0-30

is i!

moni-

cr voltag€

0-30

(dep€ndiBg

switch).

V

Dis-

vol-

'F6.5

of the

V/4'6.5

Polatity

Polarity

output

coun-

otttput

of 6'5

Lights

SUPPIY

when

is in

The Powe!

V)

the

v

is

V

at

v
'V

voi_

in-

v

too

Red

CONTROLS

B&K 1660

AlfD INDICATORS

-l

I

66

0l

Supply
the va.Iue
control.

when
MASTER
Constant

11.

C.V.
LED lights

ir the
Power

tage

VOLTAGE
or Parallel
dicator
SLAVE supplies
tage

rz.

COARSE

adju.stment
MASTER
coarse adjustEenr
Eouh output
when eithe! paraUel

regulates

this indicato!

(C@staDt

Constant

Supply

at the value

is lit, both

mode,

26

25

Fig.

l. Front

the

output

set by the IIASTER

In the Parallel

aJId

SLAVE

Current

when

controls.

Tracking

VOLTAGE

of

supply.

Eode.

Voltage)

the MASTER

Voltage

regulates

set by

are

the output

coutlol

voltage

Tracking

is

lit,

supplies

Iadjcator.

the

ln

erther the

Eode. when

the

MASTER

in the

of the

Corttol.

vottage

Atso

o!

seli€s

CoDsta.nt

fo!
SLAVE

2021

17

Panet

culleDt
CURRENT

both trle

are in

Green

suppty

mode,

output vot,

the

MASTER

SeFies

rhrs

Codse

of

functjons

the maxi

supply

tracunp

I8

Eod€j

rne

The

in-

alrd

Vol-

the

a

ti;

'.li+:,.

r

E

15

Contlols

at

is

f

I

EI

And Indicatols.

Eode is
MASTER/4.6.5
voltage
modes ale

13.

FINE VOLTAGE
ment
supply.
Dent

voltage
palallel
lected.
aE.R/4.5
tage
IIrodes

CURRENT
Iimil
tage rDode.
value

lent mode.

the

MASTER/4.6.5

the

metedng

E

selected.

iv)

and master l(F30

selected.

of

output volrage

A160

control

of rhe

ol

rV)

are

of MASTER

of

MASTER

current {A)

modes are

firnctions
fo!
SLAVE

se es

Read

V IlD

afld Daste}

selected.

C@trol.

Adjusts

Cutrent

I

Read

V I,ED

Cmbol.

the value

Distr'lay

the

Ea-{iEum

suppty when eitier

trackiDg

Display

,(F30

suppty

constant

supply

can be

V

LED Display

and

rDaster

selected,

l

3

l3

l4

the value

Fine

of the

as

fine adjust-

mode

on

when

l/

Adjusts

in constant vol-

in constant

on

when

V) Eeterins

adrusr-

MASIIER

outDut

is se-

the MAS-

the vol-

meterins

currenr
curlent

cuJ-

aead ftolc

when

((F30

the

the

u

CONTROI.S

B&K 1660

AND INDICATORS

'+'

15,

16. GND

17.

TerEiral

output telminal

ply. Also serves

terminal
series

Cbassis
'-'

output
ply.

telroinai
ation.
telminal

positive telminal oI

tlacking

T€fmiDal

T€rminal

AIso selves

(Re(l).

for 4 A

oPelatiotl.

Ground.

Elack).

telminal

for 4 A

In series

is intelnally

o

€

Fig. Z. Reat

Positive
fo! the
as the

palallel aJId 0-to-60 V

(Green).

for the MASTER sup- 20.

as the negative

palallel tlackiDg opeF

tlacking opelation.

the SLAVE suplly'

MASTER suF

Positive Polarity

Negative

tied to the

polarity

Earth

polarity

Polarity

o

Panel Controls'

aJId

this

{+)

19.

C,C.
cator. Red LED

supply is in the Constant

The Powe! Supply
current
CURRENT
trackiag
lights
mode is selected.

COARSE
adjustment of the
SLAVE
mode is selected.
SLAVE
meteling rDode is

(C@stant

at the value set bv the

contlol

o! INDEPendent

when the TRACKING

VOLTAGE Cdlrol,

supply when

DisCay when the

LED

Curr€.rt)/PARalle-r

lights when SLAVE

Culreirt

legulates the output

when in the selies

modes. AIso

PARALLEL

outPut voltage

the INDEPerdent

Read the

selected.

value on the

voltage

I

t-

mode'

SLAVE

Coarse

of the

(9

SLAVE SUPPLY

INDICATORS

18. C.V.

(CoD3taDt

LED lights

the Constant
Supply
the value set

regulates

CONTROIS

Voltage) Indicato!.

when the SLAVE

Voltage

by the SLAVE

AND

mode. The Power

tle output

Green

supply is in

voltage at

VOLTAGE

21.

FINE
xoent of output
suppiy
selected.
LED Display

Eetering

22.

CURRENT
limit
tage

VOLTAGE Control.

voltage of the SLAVE

when the INDEPendent

Read the value

when the

mode is selected.

C@trol
of SLAVE supply
trode. Adjusts

Adjusts
in constant

co$stant

adjust-

Fine

Eode is

on the SLAVE

voltage

19

curent

vol-

curlent

CONTROLS

B&K 1660

AND INDICATORS

23.

24.

25.

value

rent

the

lent
A/V SFitc-b.

metering
supply,
culnt
Display. When
voltage
Display.

SLAVE
iddicates voltage
0-30 V sl-AvE
settiDg

'+'

output

of SLAVE supply

mode.

SLAVE LED Display

(A)

of the

Tetbiaal

telminal for

Current

metering mode

Selects

mode for

When in

is lead from

in the v

is read lrom

LED Display.

supply

A/V switch),

(Red).

in

can be .ead

is selecled.

current or

tbe

the A

the
the

or

current

(depending

positive

the

constant

wher

0-30 V

(aqlps)

SLAVE

(volts)

SLAVE

Digitat

SLAVE

cu;!,

from

the

cur,

voltage

SLAVE

positiotl,

LED

position,

I-ED

disptay

at

the

on

the

potadty

suppty,

26.

27.

REAR

28.

29.

In series
nal

is connected

of

the MASTER

cND TerEciDa.l
Cha.ssis

"-"

Terminal

output
AIso
miDal

PANEL
Fuse.
Line

tracking

Ground.

(Blact).

terminal fo!

selves as

Io" 0-to-60

CONTROLS

Cold

operation,

to the

supply.

the negative polarity

negative

(c!een).

Negative pot:rity

the SLAVE

V series

this

terminal

Ealth

supply.

tracking

termi*

and

te!-

opeF

OPERATING

B&K 1660

INSTRI'CTIONS

SA.FETY PRECAUIIONS

cAuttoL

Avoid

at the

Wben the unit is

a&ounts
of its outputs,

becoEe

the heat sinks
could
damage to the equipEeEt in con­tact

Use only

outlet.

power supply chassis, case, and

ground terEinal are connected
to a

duces dange!

shock.

There Eay be
electrical shock if the

supply

extelDal
equipdent beiDg
contain
a sbock
cautioD, Ii the
output is
a voltage ratbe! than earth
grotllld)

supply

test
Never float the
a

100

eattb

EQIJIPXENT PRICAUTIO

Avoid
teEpelatures above
sufficient air space
lear of
tior to

prevent

contacting

oI the

lear

of cu$ent

the lteat sinks can

very hot. CoDtacting

when

lesult itr skin burDs o!

with thetn.

polarized

a

This assures

good

earth

output is conDected

high voltage.

high voltage and

hazald"

floated

turn off

a.Ild

the

when making connections.

potential

volts

rising the

the

peak

ground"

powe^r

+40"

alound

powe!

supply

internal heat build-ul.

the heat sinks

power

ploviding

ground

flom

great

poweled

power

(lefelenced

equipEelt

power

gleat€!

with lespect

for

supply,

large

at any or all

ale

they

3-wi!e ac

that the

and re-

electlical

danger of

powe!

to

SoDe

plesent

Obse!ve

supply

power

the

uDde!

supply

S

supply

C. Always allow

heat

the

effective ladia-

hot

an

may

to

to

than

to

ambiert

in

sink at the

Althottgh the

against

being

tection.
incoffect
under test.

cuit being
integrated cilcuits will not

spikes
under

terEinal,s of the

the

turtted on or off.

INDEPENDENT USE OF

.SLAVE'

plovide

aDps. This
MASTER ard SLAVE supplies only when they

are used independently from one another.
When used in the

mode, the opelatiEg contlols of the t\ro
supplies are colt|pletely independent and
supply can be used ildividually o! both can be
used

covered be!e. Several
in the APPLICATIONS section oI this Eanual.

Eool-r{)

l. Diseugage both TRACKING mode

2. TUrn off the

3. Condect the

levelse

powered

Always

polarity

Do not exceed tbe voltage

powered-

There is tro $eed to wo!!y

o! ovelshoot

test.

preset

The

sidultaneou.sly. Basic operation is

switches
powe!
operating rbode.

equipEent to be

device being
llinal of the

value as

SUPPLY

"MASTER"

a

0-to-30

power
polarity
Eay not include

calefully obselve

loay

The voltag€ between

power

and

volt output at

plocedure

(both

supply is in the INDEPeDdent

powered

powe!

supply is

daEage, the cilcuit

daEage

rating ot the ci!-

Many transistots and

*ithstand voltage

damagiDg

supply neve!

the POWER switch

'I,ASTER'

"SLAVE"

covers the use of tbe

INDEPendent

vadations

switches out) so that the

power
poweled

positive polarity

supply and

to the

supply.

protected

such

the equiprdent

about voltage

the equipEent

tbe output

OR

supplies each

up to 2.0

are covered

during hook-up.

red

PIo-

polarity;

exceeds

opelating

powe!
eithe!

the

of the

(+)

teF

is

OPERATING

B&K 1660

I !.!

INSTRUCTIONS

,l

rE.[

_'1

f'l a'1 1 | t- t-

lt

s.u

l-',r.f,

I

Fig.

3. Independent

f D,D

Operation Grounding Possibilities.

10

OPERATING

B&K 1660

INSTRUCTIONS

i[.

Connect
device
terminal

Fig. 3 illustlates

5.
ities

6, Observe

being
verse
circuit
Use color coded
the sets
for convenience
red for

when used in the INDEPendent

a. If t]re

equipoent
is
may
stlapping the
the
in Fig. 3A.

b. Similarly,

be

terminal
miRal as shown in

c. If

required, the codfiguratio. of Fig,
3C
Fig. 3C should
is

common wiih either the

negative

d. If the

equipEent
r^fF fr^m hoih thF Dositive

negative

the connection

polarity plotection,

negative

the

being

also the chassis

groulded

aI} ea-lth

not krown whether the chassis is

poweled

can lesult

(+)

povreled

of the

g!€en

may be used. The scheEe in

ploper

supplied

powe!

the

negative

ol

glounded

be

(GND)

the

by strapping the red

to the

$ourd

polality,

chassis or

being

polarity

pola.rity.

not equipped with re-

is

hook-up leads, such as

\tith

in

and black

pola]ity

to the black

supply.

glounding possibil-

polality

ctcuit

black

positive polarity

also be used where it

froE reverse

being

o!

to eatth by

(-)

teroinal as sho\rn

gleen

Fig.

3B.

refer€nce is not

common of the

powered

power

shown in Fig.

II

darnage

powe!

the

identifying

(-).

for

of the

of

powered

common,
telminal to

(GND)

Positive

is sePa-

inputs'

3D.
cilcuit

the

to the

polarity,

supply'

polarity,

the

can

ter

and
use

H

it

(+)

o!

device
limit

Set FINE
imu&
Turn off

3.

procedure

position

Increase

6.

7.

value

n'^.o;!!i4 in ihi< c..ri^rl

and

COARSE VOLTACE

(f

the device to be

Turn on POWER switch. The CV
cato!

should light.
Set the meter selection

mode.

LED display
FINE
specific

Set the
position

mode and note the
display.

control

Fead oulPrt !c iaQe

a'ro currsnl

powered

to be

{see

VOLTAGE

ully cotrnterclockwise).

power

in this section).

to

the

value,
meter selection switch to the A

to select the cu$ent oetFring

suppll' and corurect

select the

VOLTAGE setting until the

rea.ds the desired valu€. The

permits easier setting

lrom dspa!

\i

and set the cutlent

"Setting

control

powered

v^'tae-

load curient on the

\l

oc 4{EF sumY

- '_]

I [.C

t.rl:

CuFent

control

(see

switch to the

CV

Limit"

to c€nter

ro:rin

"Hook-Up"

r0cai0r

it to

indi

mete?ing

to

01i

,F0

tr.0,

V

a

Make sure that

?.

sufficieDt cuilent
sistance between

the circuits
Ieads
ra.ted fo! 3 arDps.

Typical C('rstant

Befoie connecting

1.

eled to the
maximum

supplied with the

the hook-uP leads offer

capability and low !e-

power

the

being

Voltage

power

safe load curent for the

poweled.

powei

OFlation

the device to be

supply, determine the

supply and

Th€ hook-up

supply

are

pow-

Fig. 4, Tnical

11

EC

Constant

voltage

!013q€

Operation'

OPERATII{G

B&K 1660

INS1RUCTIONS

8, U the load curlent

cu*ent
off and
tbis
switches to
altd furthe!
contlol wiU not
tage.

SettiDg

1. DeterEine

2, Telopolalily

3.

4. Set the

5.

CurtcDt LiDit

the deeice to be

D:ibals of
a

test lead,

Rotate the COARSE

away froE zelo

indicato!

position
rnode.

Adjust rbe CI'I{RENT
desi!€d
value od the LED

liDit, the

the CC indicator

case, tbe

curlent liEit. Read

powet

the constant

rotation

the r:taxiEum

short the

powe!

the

to ligbt.

Eete! selection

to select

etceeaLs

CV ildicato!

wiu light.

supply autoDatically

cullent

of tbe VOLTAGE

ircrease

powered-

sufficiently

the cuflent

display.

the output vol-

safe curreDt fo!

(+)

arld

supply

togethe!

VOLTAGE

s\ritch

contlol

fo!

the

ple3et

the

will

(-)

contlol

the CC

to tbe A

loetering

{or

culleDt

go

ID

Eode

ter-

with

the

6. Tbe cullent
has

now bee! pleset.
CITRRENT
step.

?.

Rebove
telminals
tage

opelation.

Typical

1. Before

2.

3. Set tbe

4.

5.

CoDstrnt

connectiEg the device

eled

to the

Eaximurb

the mete!
tion, alld

obtaiD
display,

DetelEine

(f

ully

Turn oif
to t}|e device

Tula on tbe
cato! sbodd light.

that voltage

CURR.ENT

counterclockwise).

libit

codttol

the sbolt betweeD

and hook

Cr!!€ot O!€ratioD

power
saJe voltage
selection

set the VOLTAGE

the desired

power

the

to be

power

(oeerload

Do

settiDg

up for

supply,

to be applied,

switch to the V posi-

reading

constant

control

supply

powelea!.

supply.

plotectioD)

not

change the

atter

(+)

the
constalt

detelBiDe

on tbe LED

to ErmEum

and connect

Tbe CC

aDd

to be

controls

pow-

cu|nt

indi-

this

(-)

vol-

the

set

to

it

t

@

Fig. 5.

Indcalor

C.C

n

n

IJ

L)l

Temporariy

short

Setting Curlent

{-)

and

0N

(

)

Read

current lmt

value lr0m

fulrdrange

rmi

LirDit.

d splay

Fig.

BO:3

6. TlTical

cc

ndicalor

Codstant

0N

lrom

0es reil cufrenl

Crrrent

drsplay

volage

Opelation.

mt

OPERATING INSTRUCTIONS

B&K 1660

6. Set the Eete!

position to obtair the curlent Eetering

lllode.

?. Incease the CURRENT control

until the desired constant

read on

is
Iimit in advance
load) as

Cullent Limit"

8. If the load culrent
stant cullent
will
tigbt. In
autooatically
voltage 6ode,

CURRENT
output

C€Estant
Charactedstic

The working

supply is

cutleDt automatic
rnits continuotrs
rent

to constant

load change.

the
voltage and constant
the crossover
sbip between

Fo! exadple, if

powe!

tage roode,
vided, The output
the
the

point,

and
furthe! increases
is indicated
cators.
the

curlent to the
matically occuls
good

charging

cilcuit voltage

preset

supply

load iDcreases,
preset

th€

the

indicator

CV

SiEilallv.

example

for 13.8 volts.

prescribed

go

off aJId

crflent'

Voltage/CottetaDt

called

point.

this crossove!

is opelating

a reguiated

cutlent

output cu.}lent

output

by

The clossovei

a lz-volt

selection

the display,

(befole

procedr.ue

value' the CC iidicator

the CV indicato!

case, the

tlis

switches to the constant

further rotation of the

aDd

control

charactelistic

a constaDt

clossover

tlansition

voltage modes in reslonse

The intelsection of constant

crrllent

Fig.

the load is such that

voltage

up uDtil the

Iimit is reached. At that

voltage drops in

load, The crossove!

in
the front

point

goes

off and the CC indicator

crossove! flom the

constant

fror! a

of this would

battery. Initially' the

of the

A low battery

switch to the A

cu!!€nt

or set

connectidg

earlier

clroPs belo\t the con-

will

7 shows the relation-

output

powe!

in the

por'ei

not increase the

Curent

of this

voltage/constant

t'?e. This

floh constant

modes is called

poirt

in the constant vol-

lemairs

voltage mode auto-

ileclease in load' A

and the load.

voltage

point

becohes constant

Fopoltion

panel

is reached

be

suPPly

settitrg

value

culent

the

"Setting

suPPly

power

is

constant

v,thele

point

LED indi-

when

constant

Eray be

will

when

place

seen

the

wiu

Per­cur-

to

the

pro-

as

to

oPen

heavy load on

a
iE the constant
adjusted for
battery becomes
apploaches

poiDt

the

I aElp charging

point

constant

where

whele the

voltaee mode.

the supply
culredt

a I aIlP

charged'

13.8 volts, its
no longer

it

!ate. This is

power

1

I

Fig. ?, Constant

SERIES

is selected,
SLAVE
to
MASTER
to
supply simply
telmina.l

(!ed)

outFut voltage
SLAVE

with one coDtroi.
voltage is autoaatically
as the
VOLTAGE

voltage can
eration
rent Eleteling

TRACKING

when the selies

supply output

th€ negative

supply,

be used

oI the SLAVE

telminal

In the

Simultaneous

selies tracking

supplies

MASTER

contlols,

by setting one

Voltage/Constant Cutlent

Characte!istic.

tracking mode

positive

the

This allows the

as a single 0_to-60

by using

of th€

of both

can

The ma-yiEluro SLAVE

supply by using

metelillg of both

be obtaided in

ajld one

aJId it will opelate

mode' which may be

chargitlS tate.

and its

load

deoands the

supply

the clossover
goes

voltage

decleases to

into

___-L

OPERATION

of oPelation

(red)

telrDinal

is internally connected

(black)

MASTER supply.

be sirDultaneously

telmillal

Powe!

volt

the negative

supply

of the displays

fo! voltage

a]Id the

mode, the

the MASTER

set to the

the LASTER

current

this mode

ltraximum

sarne

positive

for cur-

metering.

As the

full

the

of the

of the

supPly

Power

(black)

and
varied
supply

value

and

of oP_

OPERATING

B&K 1660

INSTRUCTIONS

In

this

case, the output voltage
suppliesi
value.

set

fo! voltage meteling

play

acloss the MASTER positive

the

SLAVE negative
double
play

sarDe voltage),
would
Display
series,
Eust be

1.

Z.

3. Set the SLAVE

is actually double

For

example, if the

for current

the reading on

(since

be the value

(since

current flowing

equal).

Set the
SERIES
TRACKING
TRACKING switch.

Set the
G30 V
to the V
the SLAVE

Eetedtlg)

fully clockwise
curlent is
CURRENT control.
stluctions fo!
(INDEPENDENT

'SLAVE"

using

the MASTER

Because
used

in sedes,
contlol can be used
dlurh crl}Ient.
MASTER
be

rotated fully
the SLAVE
can be us€d to adjust

rnum

current through

must
being
CURRENT control
set the rnaxihum

oetering,

(black)

the MASTER

both

supplies are

The

actual output

lead frob

the

t,ro supplies

power

position

curlent value.

be equal when
used in se es,

suppties

mode by

switch

(F30

(voltage

SUPPLY section

V/,t-6.5

the

meteling)

A/V switch to

position,

CURRENT control

position.

set using

"Setting

USE OF

CURRENT control.

NOTE

the supplies

eithe! CURRENT

II desired.

CURRENT control

CURRENT

the two supplies

output cu!!ent.

through

and release

MASTER

clockwise

(across

the displayed

MASTER

ard

the SLAVE

the output voltage

(red)

telmiDat

putting

the SLAVE

are wiled

to the

engaging

V switch

the A

The
the MASTER

Follow

Clrrent Limit"

"MASTER"
ol this manuatl

are being

to s€t maxi-

control

the maxi-

Because

they

the lowest

setting wiu

the two

disptay

tellninaf and

would

LED

out

current

each

position,

supply

TRACKING

the
the

lieht

to the

A/V switch

(current

to the

inaximum

the in-

the
ca
and

are

dis-

be

Die-

the

LED

in in

left

and

OR

is

voltage is double
MASTER LED Display).

Turn olt the

5.

equipment to be

6.

Connect
deqice
minal

Connect

1.

device being
terminal

Fig.

8.
bilities

volt

a-

b.

c.

Ii one
straps is to be
hr one of these
necting
ground
negative
down

supply.

the

being

of the

the

of the SLAVE

8 illustrates the

when the lmit

If the negative polality
equipment
is also the
may be grounded
stlapping the black
the SLAVE
(GND)

supply
SiEilallyr

glounded

be
teirDiDal of

green

the

supply as shown

"split

lf
sired, a

tage with

acheived

t€rminai

green

the
supply as
APPLICATIONS
manual for

"split

supply"

of the

two ground

both

power

the

the reading

power

powered

positive polarity

powered

MASTER

negative

poweled

or circuit being

chassis or common, it

terr'inal

as shovD

the

by
the MASTER

telminal

supply"

positive

a center ground

by

stlapping

of the

{GND)

shown in Fig,

rhore

NOlE

supplied

used,

three ways.

the

terminals

supply,

suppty

to the led

poweF

to the black

powe!

grounding possi-

is used as a 0-to-60

supply

of the

in Fig.

positive

strapping

in Fig.

operation

and

MASTER supply

of

section of

operation.

only use it

straps

positive

and load

on the

ard the

during hook-up.

of the

(+)

te!-

supply,

polality

to ealth by

(-)

to the

of the

negative voF

the black

the MASTER

infolEation on

$ound

causing

of the

supply.

oI the

powe!ed

terminal of

green

SLAVE

8A,

polarity

the red

supply to

88.

8C. See the

Con-

could

and

caJI

MASTER

is de-

car be

this

(-/

(+)

\-/

to

4.

Adjust
level

trols

the output voltage

using the MASTER

(rerel:)ber

to

the desiled

VOLTAGE

that the actuar

con-

ourDur

d, If an ealth

required, the configuration
8D may be

gtound

used. The scheroe

lefeience

is not

of Fig.

in

e 0.0

B&K 1660

OPERATING

INSTRUCTIONS

'r,:.'

Fig. 8. Selies Tlackirg

t:

(0-to-60

v)

Opelation

Glou.nding Possibilities.

OPERATING INSTRUCTIONS

B&K 1660

Fig.
is not }crown wbetber

cohmon with

Degative

e. If the chassis

equipEent being poweFed
ate tlol]l both
ative
conlrection shown

Obselee

9.
being
verse
cilcuit can lesult flom
Use color coded hook-up
the
for cotrvenience

led fo!

10. Make sure
sufficieDt
sistance
the cilcuits being powered.
Ieads supplied
rated fo!

powered
polatity

sets supplied with

(+)

shou.ld

8D

polality.

polality

proper polarity,

protection,

a:rd black

that the hook-up

curlent

between the power

.lvitb

3 amps,

also be used

eithe!

the

powe!

not

is

in identifyiEg polalitt,

for

capability

th€ power

the

o! comEon

positive

inputs,

in Fig. 8E.

equipped

dabage to

leverse

leads,

the

(-).

whele it

tbe chassis

positive

is separ-

and

use the

If the

with re­polality.

such as

power

supply,

leads

and low !e-

supply and

The hook-up

supply

ol

of the

neg-

cilcuit

the

oller

are

is

the

r]Iaxibum cr.EreDt

usiog
MASTER
iDstluctions

CINDEPENDENT

'SLAVEI
tion).

output at

jacks

rcD

Adjust tbe output voltage

level

t!ols.

Turn off the
equipEent to be

6.

Connect
vice beiDg
E:inal of tbe MASTER powe!

Connect

7.

vice
minal

tbe MASTER

supply output

SUPPLY

RerDeEber that

is double the leading

{o!

the

"Setting

USE

MASTER

Display.

usidg the UASTER VOLTAGE

powe!
powered

positive

tle

poweled

the negative polarity

b€irg

liowered

of the MASTER

goltaee

and

controls.

jacks,

Cullent

"MASTER"

OF

palaglaph

the actual

supply

oD the

to the desiled

supply and

during hook-up.

polality

to the led

to the black

powe!

ale

iJsiag

follow

Limit'

of

this sec-

current

output

SLAVE

of tbe de-

(+)

supply.

of the de-

(-)

supply.

set
the

the

OR

con-

the

te!-

ter-

PARALLEL TRACKING

In

both supplies

lel), This auows

ardp current
output telminals

opelatioD.

SLAVE

tlack

1.

2,

3,

palallel

the

ln the

supply output voltage

the MASITR

Set the
PARAILEL
TRACKING

Set the
(F30

to the V

the
meteling) position.
now

day.
the value lead

play
tbe saBe ahount

Because both voltage

SLAVE supply tlack

position,

V

SLAVE A/V

be read f!o@

Output

(because

tracking

are strapped togethe!

for a 0-30 V

capability.

are used fo! parallel

paldlel

supply output

power

supplies

mode by

switches.

o-30 v/4.5 v

(voltage

culrent is
from the

each supply

OPERATION

mode of operation,

(in

supply

Onty the IIASfiR
tracking

to the

tbe

MASTER

Eeteling) position,

switch to the

Output vottage

the I|ASTER

SLAVE

of

curlent).

and

the MASTER

mode,

and

voltage

TRACKING

engaging

switch to

A/V switch

A

LED

exactly doubl€

LED Dis­providing

is

cuirent of

paral-

with a 4
tlacking

the

cu.rreDt

and

both

the

and

(current

wiU

Die

the

supply,

Fig.

8,

ities
PARAIIEL mode.

a. If

b, SiEilarly,

c. If an ealth ground

d.

iliustlates

9

when used

t}te negative polality
equiploent or
is also the chassis
tDay be
strapping the

green

the

in Fig.

gloulded

be
terminal
minal

require4
9C

Fig.

is not
common

negativ€

II the

equipment
rate
negative polarity
the connection

as shown

Day

9C

known

from both

the

in the TRACKING

cilcuit being

glounded

biack

(GND)

9A.

positive

the

by stlapping

to th€

in Fig.

the

corfiglration

be used.

should

with
troIarity.

chassis o!

also be

v,/hether

eithe! the

being powered

shotrh

grounding possibit-

of

tbe

powered

or comloon,

to

eatth by

(-)

terminal

telminal

polarity

the led

gleen

the

power

(cND)

98.

leference

The

scheme
used where
the chassrs

positive

coErDon of

positive

inputs, use

in Fig.

as shown

is sepa-

to

can

(+)

te!-

is not

of Fig.

rn

o!

rne

and

9D.

it

it
rs

l6

OPERATING

B&K 1660

INSTRUCTIONS

din

I t- l-1 I

r5.O rac

i lri

IEB

|

[J.U

!

!

t6.D

'r-.r.c.r

Fig.

Parallel Tracking Operation

9.

t7

ta i

Grotmding

Possibilities.

OPERATING

B&K 1660

INSTRUCTIONS

l

t

tnn

ga:.1

f

tt

ncn

u

J.rJ

10.0

E3,ro

!

Fig. 10.

0s.0

clounding

Possibilities

18

for 4-6.5

3[.C

power

V

Suppty.

OPERATING

B&K 1660

lNSTRUCTONS

ObseNe

9,

being
verse
circuit can
Use color coded

the sets
Ior convenience
red for

10. Make sure tlat the
sufficient
sistadce
the circuits
leads supplied
lated

available as

+6.5 V POWER

,t-6.5

The
DC output with a 5
supply is ideal

1, Set t]te G30

1F6.5 V
switch to
MASTER/.1-6.5 V
voltage of the

2.

Using

just
supply to

Turn off the

3.
equipment

4.

Connect
vice being
minal of the

5. Conn€ct
vice

minai of

6. Fig.
bilities of the the

a.

b. Similarly,

prope! polarity.
po\rered
polarity

}esult

supplied

(+)

and black fo!

c1rrlent capability

between the

being

for 3 aDops. 10-amp

an

SUPPLY OMRATION

v supply

fo! use

position and the MASTER A/V

the V

the Voltage Leyel

the output

the desiled level.

to be

the

powered

the negative

being

10 illustrates the

If the negative

equipment
is
rEay
necting ajumper from the black
terEinal
termiDal

be

powered

the !F6.5 V supply.

also the chassis or coDomon, it

gloulded

glounded

not equipped with re-

is

protectior,

from reverse

hook-up ieadsr such as

with the

in identifying

poweled.

with the

optional accessory.

plovides

aEp

with

v/+6.5 v

position.

Display

,{-6.5

voltage of the 4-6.5

powe!
pos'e!ed

?ositiv€

,F6.5

V supply.

4-6.5 V supply.

or

to either

as shown in Fig. 10A.

t}le

by connecting a

If the circuit

darDage to the

polarity.

powe!

(-).

hook-up leads offer

power

povrer

test

a 4.0 to 6.5 v

culient

v supply.

to the

cilcuit

positive polarity

capacity. The

TTL

circuits.
switch

This sets

to

C@Eol to ad-

supply alld the

during hook-up.

polality

the }ed

to

polarity

black

grounding possi'

polality

being

to earth

geen

supply,

polarityi

and low

supply and

The hook-up

supply are

leads are

to the

show output

of the de-

(l

of the d€-

(-)

of the

powered

by con-

juEper

!e-

the

V

ter-

ter-

G)

(GND)

can

between the red

either
shown ir1 Fig, 10B.

c. If an earth

requiFed.

IoC Eay be
Fig. IoC should also be used
it is not known whetheF
is
or negative

d. If the chassis

equipment
alate f!o!D
negative
the

Obs€Ive

1.

being
verse

circuit can

Use

the
for convenience
red

Make sule that the

8.
sufficielt cujlent
sistance

th€ cilcuits
Ieads supplied
lated
are available as an optional

If t}le red OVERLOAD

9.

too rouch
supply.

operation of the +6.5
supply

iequi!ed.

powered
polality protection' damage to the

color coded

sets supplied

for

for 3 aftps. 10-a6p

current
corlect
mole than 5

decreasing the Ioad does

If

cause the ovelload
tuln off, the ovelvoltage
tion cilcuitry
o!de! to leturn lhe
norrDal
voltage
the extelnal
be removed) ad tle
te EoEentarily shut off.

gteen

the

common with either the

polarity

comection shown

prope!

is

result floe

black for

aDd

{+)

between the

being

with the

load has been

This will cause

to illop and

this situation, the

must be decreased

NOTE

ope!ation, the output

must be decreased

voltage source

(+)

terEinal

(GND)

glound

configulation ot

used. The scheme in

pola.!ity.

or collrlon

being

both the

polarity,

not equipped

hook up leads' such as

with the

i$ identifying

hook-up }eads offer

capability

porreled.

amps of culrent ale

indicator to

has

turned

teltninal

refelence

the chassis

powered

positive and

powe!

leverse

powe!

power supply are

poF€r

inputs' use

of Fig. 10D.

If the circuit

power

(-),

and low !e-

supply

Tbe hook-up

hook-up leads

accessory,

indicato! lights,

placed on the

voltage and

prevent proper

v supply. To

load on the

so that no

not

protec-

on, ln

supply to

(oust
Enst

arld

is not

Fig.

where

positive

of the

is sep-

v'ith re-

Polarity.

supply'

polarity'

(o!

as

and

r.9

APPLICATIONS

B&K 1660

GENERn'L

Tbe Model 1660
wide valiety
electlonics
hanuf
and hoEe hobbying,
power
0-to-30 volts and

supply is fu.lly adjustable

a curlent

ibility Drakes
requiring a dc

EI.ECIRONICS

is
supply

elate
bench when
equipoent.
batterfopelated
fect
hicular
sound sFterls,
bedch. Parallel
aEps, adequate surge
la.!

lZ-volt electrical
trical
volt systeE,
chalged

supply may
equipment
cal
trical
froE

actulitrg altd testiDg

supply outputs

Most electronics

performed

can

a Ecodule o! circuit

of Iow battery voltage.

equipdeDt

equipEent.

Most

systerE is normally

is apploximately

systeEs.

systeE;

these systeEs should

of applications

servici.Dg, engineering

capability ot

it suitable for

powe!

on

plovide

it is removed frol!

lt can be used

autoEobiles

actual battely

be set to 14 volts

lrolD vehicles

SoEie trucks

power

are fully adjustable

G-to-z aEps and

soutce.

SERVICING

tloubleshooting

a test benclr

the dc

equipEent and

such as

CB ladios, etc.

tracking supplies

cullent fo!

aDd otber vechicles

systeEs. Although

bench testiag

supply bas

iu electrical

laboratorie6,

f acilities,

Tbe Maste! and

the 4'6,5 V

fron

4-tc'6,5 V

0-to-5

aEps.

Erost applications

powe!

boald on

power poltable,

to

It

tape

referled

voltage

14 volts.

with

lz-volt

use a Z+volt

pelforhed

be

TNs flex-

and

This

soutce to op-

its

check

powe!

can

players,

on th€

eost vehicu-

to as a

when fully
The

fo!

of

equipEent

the test

up

the elec-

servicitrg

a very

a$d

scbools,

Slave

from

with

repair
powe!

pareat

the ef-

ve-

auto

test

to 4

use

12-

power

electri-

elec-

at

28

1660, The
tain its own power
powe!.

in

the cilcuit.
supply output
point
tlarsisto!.
supply
in
sisto!,
vades
tDay
often
dissipation.

ELECTROMCS

power
soulce
subassexoblies,
duction and
control
incoming
testing
blies.

Ioi

ease of opelation
rating.
sipation ale aoong
be measure4
tage
The
ivbich
tior

the unit can

ELECTRONICS

in

the cilcuit,

tbe dc

be noteal

used to

In

electronics

This

roanufactuling

are easily displayed

current limit

do

will cause

equipment being

A dc

the cilcuit,

output

Varying

supply

while

a!ea, The

pulchased

power

When

voltage hay aheady

is

The

is then applied

such as

the

bias on the stage,

protect

MANUFACTI'RING

is o{ten used

testing aIld

and

asseiobly alea

inspection

supply is

load curlent

the total

not lDeet

the CC

be lejected.

DESIGN

tested

supply

Otre

floated

other

powe!

A series lilrlitiDg

oa[ufactuling

cobplete tmits
instluoent

cor:tponents

applications

and

the maiD

can be set

the load culleDt

and operate

polarity

to an

such as the

poladty

to alrothe!

the base of

supply voltage

the circuits

as a

adjusting modules,

o! in

as a dc

palticularly

power

its continuous

or total

characteristics

load current

on

the LED display.

so that all

indicator

LAB

of

ard the effects

facilities,

calr be used

and subasser:t-

because of

Eay

co.-

floE

plesent

be

power

the

applopriate

eljlitte! of

of tle

to light, aJId

power

point

that traJl,

then

lesistor

froh oveF

the

powe!

dc

in the
the

souice

weU

Fower

specifica-

pro-

quality

for

suited

its

duty

dis-

and vol-

units

ac

a

is

in

to

jection

Soloe

tests, such
in

a television

lated

serviciug

of a vaiable

dc

applications

as checking

receive!.

powe!

supply,

requile

dc voltage

the effect

This lequires

such as

the in-

Io!

celtain

of AGC

an

the Modei

bias

iso-

The tecbnician

engineeling

supply

cuits,

bonitols

zo

to

This

laboratory

powe!

power

output

or enginee!

requiles

bleadboatd

supply

cuFent ajld voltage,

working

plototype

and

is ideal

a dc

in an

powe!

because

limits

ci!-

rr

APPLICAIIONS

B&K 1660

current to
oger a wide range, alxd
legulatioo aDd very low ripple.

Use of the instrumeDt ia an eDgiDeering
Iabolatoly
servicitrg electlonics equipEo

except that lowe!
wheD

ledt liEitiDg feature is vely valuable iD this

application because it can
circuits froEr damage.

EIICTROMCS

Eay use the
Eent and
all otbe! applications. In additioD, the

supply can be

to conduct expedhents
tlonics. In lealning
the relationships
voltage are easily
a

BATTERY CSARGnIG

chalge!
batteries such
and soEe alkaline t]?es.
xoanuJacturerts charging specifications
prope!
iDformation
teries. Battery charging,
requles the

ation. Before connecting
the battery,
the fuUy chalged
ttre battely Eanufactule!.
supply wbile connecting
plope! polality and connect as tor constant

culrent

tlol fo! the Eaxixoum chalging curlent speci-

Iied
manmum charging curlent is
powe!

CURRENT

dicator will light

at the

apploaches

powering

The

po\re!

The

by the

trEotect

vely

is

student in

powe!

cilcuits

used in the classlooE laboratory

supply.

power supply can

to restore the charge in rechargeable

voltage

is soloetioes

constant cutlent mode of opet-

preset

operation. Adjr.Et the CITRRENT con-

battely hanufacture!,

supply's

coDtlol to EaxiEuxo).

preset

full charge, its terEina.l voltage

the circuit, is

similar

currents

iodividual circuits.

EDUCATION

an electlonics culriculuEd

supply

as

of resistancet current,

derDonstlated by the use of

as lead-acid, nickel-cadmium,

and

current

terEinal

maxiroun load current, set the

and

curlent

to tbat desoibed for

ent aDd rDodules,

tDay be

plotect

powering

fo!

pleviously described for

in furdamental elec-

ohE's law, fo! exaeple,

be used as a

Refe!

settingE. Charging

plinted

at least initially,

the

the VOLTAGE controls to

voltage

Tuttl off the

the battely, Observe

gleate!

battely will charge

the

lirbit. As the battely

adjustable

has excellent

pleva.lent

The cu|-

u.nploven

equip-

powei

battely

to the

powe!

battely

on the bat-

supply to

specified by

powe!

[f

than the

The

CC

and

fo!

the

in-

will apploach
and tbe charging curleut will taper off,
power

(constant

occurs, the
eide a trickle charge.

SPIJT SUPPLY

quired
cuits.

"split
caJI be coDfiguled to

tages
voltage6

tive and one

In addition, each of these

be obtained with identical o!

tages.

Teo ldeDtical Pcitive Voltages

CoDEoD Negative
(Refer

idertical

negative, A

aigital ca.!
inputs and a collEon
supplies in the

plovide

This t}?e of

tained as follows:

supply

Frequently,

fo!

The Model 1660 is

powe!

with a corDrDon

To

Sol:]e electlonic

1, Connect

MASIER supply's
glound.

Z. Set the

curlent
and CURRENT

Turn o{f the

3.
equipment to

4. Codnect the
the circuit to

(red)

nect

cilcuit to be

supply's negative

Green)

tbat of

loay autoEatically

voltage) opelatio!. When tbis

powe!

aEplifier and other electro[ic ci!-

with a commoD

Fig, 1l)

positive

clock whele there a-!e two

the siEplest hook-up anal opelatior:.

terminals of the

th€

supply will

"split

supply" opelation.

negative with a common

voltages with a cotDhon

good

example of this

para.llel

'split

glound

a

desiled voltage &d maximum

using the MASTER VOLTAGE

be

positive polarity

be

corohon negative itrput

telminal.

power

the

powe!

provide

negative, two negative

positive, ol otre

equipDent !equiles two

negative. Using both

tracking

supply"

stlap between the

negative

controls.

power

powered

poereled

poweled

(black)

supply

switch

continue

supplies"

ideally suited fo!

TNs supply

positive vol-

two

configruations can

diffeline vol-

With a

would be a

+12

rllode would

operation

terEinal

supply and the

during

supplies and con-

to

hook-up.

inputs

to the

the MASTER

or

output

The

to CV

pro-

to

are re-

posi-

ground'

volt

ob-

is

and

positive

of the

gound

of

zl

APPLICATIONS

B&K 1660

rRACr

Sed

]E ;tu; ;qPq L; rcEi ,**,

!trn n

Fig, 11.

L

T}?ical Hook-Up

Identical Positive

!vur!u!

\G

rrctsduvc.

tCn

|

)t)

Voitages

Using

anC a

Two

(!ed)

terrninal of
the cor!6orl negative
to be

powered
negative
terminal.

6.

desired,

If

the supply,

to either

(black)

input of

or ground

the cilcuit

of

the supply's

set the LED displays

Connect

(8}een)

to moni-

Two Dilf€ridg

Positiye Voltages

CoEood Negative
(Refe!

ferent
tive. A tFical
vice

(t}?ically

suppties,

To Fig. 12)

Many

electronic circuits

positive

that uses both

+15

two differing

voltages

example of this

V) cilcuitry.

common negative are

l.

Select the INDEPedent
and

set up the LED displays

displays

Z.

Coinect the
suppliesr

3. Independentty
maximulo
SLAVE

Donitor voltage,

ground

negative terminal

set the

cuirent for

supplies using
VOLTAGE and
the SLAVE VOLTAGE

4. Turn
eqriipment

5. Connect

off the

to be

the

positive polarity

the circuit to be

With a

with

lequile

a common

two dif-

would be a

(+5

TTL

V)

and analog

Using

positive

voltages

obtained as follows:

opelating

so that both

straps

between
and glound.

desired voltage

the MASTER

the MASTER

CURRENT

power

powered

contlots

ald

CURRENT

supply

and

during hook-up,

inputs of

powered

to the

positive

nega-

de,

both

with

mode

each

and
and

and

the

Fig.

Diffeling

Two

a

Ideutical

ComEon Positire
(Refe!

To Fig. 13)

When the same

at

two
common positive
fol1o\ring:

1. Connect
positive

MASTER

Z.

Set thF dFsiled voltage
curlent using
and CURRENT

3. Turn off
equipmeDt

4, Connect

the circuit
fblack)

12. T}?ical

Hook-Up

Positive Voltages

Comlr]on Negative.
Negative Voltages

negative

points

in the

is needed, pelform

gro'$d

the

terrninal

supply.

the MASTER
controls.

powe!

the

poweled

to be

the negative polarity

poweled

to be

terhinals of

Using

Two

and

With a

voltage

same

is required

circuit and a

strap between

and the ground

and maxiEum

VOLTAGE

supply

during

and the

hook-up.

inputs

to

the negative

the supplies.

a

the

the

of the

of

Con-

zz

APPIICATIONS

B&K 1660

nect the coroEon

circuit to be
supply's
terminal.

positive

powered

positive

(red)

tC.]'

t "tl

input of the

to the LASTER

or

ground

(green)

Connect
the circuit to
supplies
termina.I.

If desired.

6.

the coErnon

be powered tc eittre?

positive

set the LED displays to

positive input of

(red)

or

gtound

(gree$)

moni

Fig. 13, Tnical

Identical

Two Dilfering
Pcitive CoEmod

er To

{Ref

Using both
voltages with a common
as follows:

1. Select
a.nd set
alisplays Eonito!

Connect the

2.

supplies'

3, Independently

ma-,.imulrl current
SLAVE
TAGE
SLAVE
tlols respectively.

4. TrJI1 off
equipment

5. Connect
the circuit

(black)

Negative

ComBron

Fig. 141

supplies, two

the lNDEPedent

up the LED

positive

supplies

aJld CURRENT

VOLTAGE

the

terminals of

Hook-UP Using

Negative

voltage.

ground straPs bet\teen

terminal

set the desiled

using the

power

the

po\pered

to be

negative

powered

to be

Two

voltages and a

Positive.

Voltag€s With a

differing negative

positive

displays so that both

fo!

and CURRENT

ar.e obtained

operating Eode

ground-

and

voltage and

MASTER and

the

MASTER VOL-

contlols

supPly

dudng hook-up.

polarity

to the negative

the supplies'

and the

and the

inPuts

each

con-

of

14. Tnical Hook-Up Using

Fig.

Dilferent

Idedtical Pcitive

a Separate CotnDon
(Refer

Anoth€r

when a circuit

amps).

negative

amp

sedes trackiBg

positive
cosrmon

1. Select

Z, Connect

3.

Fig. 15)

To

voltages aie

circuits. Using

and

are obtained

mode ard set
at least
tage.

gound telminal
minal of

the desired

Set
TER

Negative

Common Positive.

tnical

uses operational

TWically, identical

negative

the TRACKING

one of the displays

the

the MASTER

VOLTAGE controls.

Voltages and a

and Negative

"split

mode

up the LED

supply" application

required to
both supplies

of operation,
voltages with a sepalate
as follows:

ground

and the negative

voltage using

Voltags With

amplifiers

positive and

SERIES

disPlays so that

monitols

st.aP

suPPlY.

IndePendently

Two

power

and the

identical

operating

between

the MAS-

is

(op-

op-

vol-

the

ter-

23

APPLICATIOXS

B&K 1660

set tbe

and SLAVE

TER
TER CURRENT
contlols

Trlln
equipment

Connect

5.

the cilcuit

(red)

terEinal
connect the
cuit to the
SLA\rE supply.

Erourd
MASTER

If desiled. set

6.

displays to
oftetr

curreDt

Ioad

this confisuration.

EarciEum

!espectively.

off the

to be

the

to be

negative

ttre

to

supply.

rEoDitor cu!!ent. Although

balalced' there

SEIECI

curlent

supplies usiug the

and SLAVE

power
powered dul.ing hook-up.

positive polarity

poweled

of the

neSative teroinal

CoDDect the

ground

one. o! both of the LED

fo! each of the supplies in

TRM( NG

SEB€S

Prcsl curc(

fo!

supply and the

the

to

ITASTER supply and

polality of the cir-

telmina.l

can be diffelent

mr

llASF

the

MAs-

CURRENT

inPut

positive

of

the
circuit
of the

of

Select the

L

alcd set
eoltage.

CoD[ect

z-

ground
minal of the
other between
the

positive

INDEPendent

up the LED displays

glound

oDe

teruinal

and the negative

MASTER supply and tbe

the

termiral of the $-AVE

supply.

Set the desiled

3.

usiDg the VOLTAGE coatlols.
daximuE curlent
coutrols,

Tuln
equipEent to be

Couect the

5.

the cilcuit to

(red)
comect the

cuit to the
SLAVE
glound to tbe
the

If desired, set the LED

6.

tor cu!!ent.
usually
supplies in

off

termina.l of the

supply. CoIllect the

XASTER or SLAVE supply.

be different for each of

thi6

voltage fo! each supply

using tbe COR.R.ENT

powet

the

powe?ed

positive polarity

poweled

be

negative

negative telrDinal

groutrd

The load curreDt $ill

configuratiod,

Eonitoi

to

Set tbe

and the

hook-up.

input

Positive

of tbe

of

circuit

of

lDode

teF

either

opelating

strap between the

ground

LASTER supply ard

polarity

tetDtiBal and

supply

duting

to the

tetEinal

displays to Eodi-

of

cir-

the

the

Fig. 15, Tnical Hook-Up Using

Identical

Ditl€triDg
a Seperate CoEDon
(R€fer

Using both supplies

tlackiDg

negative voltages

and

ale obtained

Positive and Negative

with a Separate CoEuon.

Pcitive and Negatiye

To Fic. 16)

mode of operation,

as followsi

Voltages

Voltag6 With

aDd the iDdependent

diffeleDt

with a separate cotiEon

lositive

Fig. 16. Typical

Positive

z4

qdr!\

or dr\rd 4,aoP

EdPn NoEP

! e.0

Hook-Up Using Dilfeling

aJId Negative Voltages and

Sepaiate CoEmon

a

MAINTENANCE

B&K 1660

The

follo\dng

use by

for
onlt

do not

To dvoid

perform

instructions

quolified

personnel

electrical shock,

@ry servicing
other thotl contnined
operatiftg instructions uniess

qtnlified

FUSE

ore

REPLACEMENT

to do so.

If the fuse blows, the slvitch,

plays,

and the
fuse should

has developed in the Lmit. Try

and colrect the cause of the blowl fuse,

and all

po$eI

other

suppl) will not

not normally open Lmless a

indicatols

ore

in

the

you

the LED dis-

will not light

opefar-. ThF

prcblem

to determine

then

replace
lating. Fo!

250

240 v operation
should be used. The fuse
panel

LINE VOLTAGE

The

former is tapped to

110, 120,
tage. CoDversion lrom
another is done by a simple wirirg

shown in Fig. 1?.

A ]abel on the rea!

voltage

only with a fuse of the colrect

110 or 120

V, 3AG fuse

(see

Fig.2).

primaly

220, or 240

\i'hich

to

should be

a 2,5 A, 250

CONWRSION

winding oI

the unit was factory wired.

V operation

rrsed

ard for 220

V,

is located

powe!

the

permit

VAC,

panel

operation from

50/60 Hz line vol-

one ]ine voltage

identifies

a 5 A,

3AG fuse

on

rear

the

trans-

chanse as

the lin€

T10

or

to

S_

=

WIFENIJI

220

=

I

I

T101

;;l

-

lf-

.t

f

ryt
,*l

l-

*t-

-

I

110 V

V

Fig. 1?.

Line Voltage Conveision.

240 V

z5

MAINTENANCE

B&K 1660

To

convert

following

the

Make sure the

1.
Remove the case and

Z,

t!ansfolmer,
Rewire the

3.
sired line voltage as shown in Fig,

Insulate the ends of the bused

former tap wires.
A

4.

5.

6.

change

a corlesponding change of fuse value.

Install the

the
Replace

Affix
voltage and
the uiit
label directly over the factory label.

a different line voltage,

to

procedure:

power

power

in line voitage may

corlect fuse

FUSE REPLACEMENT

the cover.

label

a

showing the correct ]in€

fuse value

after conversion.

cord is unplugged.

locate

transfolmer

value as listed

sectron.

(if

changed) foi

perfo):m

powe!

the

to the de-

17.

trans-

aiso lequile

Place this

in

pow-r supply is in rh-

erating
Set

3.

(both

/{,,]L, ^^,,-r4!.1^.L-'ic-l

-A.djust trimmer
the main
on the
reading
timeter.

Set the

5.

(both
{fuIIy

Adjust trimmer

6.

the Dain master citcuit
o!
reading

mr!l +i mpr orl 2< n^<ci}|la

Set the

7.
0-30 V
switch

rDode.

MASTER

ihe

COARSE

rraster circuit board

right side of the supply)

-15

of

MASTER VOLTAGE cont"ols

COARSE ard

clockwise).

the light side of the

as close to 31.50 volts

0-30

position

to the

V

INDEPFnd.nt

VOLTAGE controls

and FINE)

potentiometer

mv

potentiometer VRZ01

V/+6.5 V switch to the

and the MASTER A/V

position.

rDv on the mul-

r15

FINE) to maxinum

minimum

to

VRZ04 on

board

supply) for a

op-

{located

{or

on

(located

(on

the

a

ADJUSTMENTS

This lmit was accurately adjusted at the
factory before shipment.
recommended only if repairs
in a

circuit

you

if
of adjustment. Howeve!, adjustments should
be attempted
with an accuracy of
available
equivalent).

If leadjustment is required, use the fol­lowing
right are collect wher facing the frort oI the
supply. Locations of the adjustmerts
shown

Mast€r Supply Ard Master/,{-6.5 V Metering

Adjustmedts

1. Connect an accurate
4-1lZ dreit lrultimetel to measure the dc
voltage at the output terminals
MASTER SUPPLY.

2. Disengag€ both TRACIONG
switches

affecting adjustment accuacy, or

have a reason to believe the rmit is out

only if a 4-1lz

10.1%

(B

procedure. AU

in Fig. 18.

K-Precision Model

&

leferences to left and

(both

switches out) so that the

ReadjustErent

have

been made

multimete!

digit

dcv o! better is

2820 or

are

(10.1%)

extehal

of the

mode

is

Adjust triinmer

8.
the master LED dispta]'

(located

behind the
reading of
Display.

Set the

9.

0-30 V

switch to the A

Connect the external multimeter across

10,

the MASTER SUPPLY output terminals
to read the output cullent

rneter causes a short
terminals) a]1d adjust the MASTER
CURRENT control so that 2.00 amps is
read or the multimetel.

Adjust VR60I so that the MASTER LED

11.

Display also

Rotate the MASTER CURRENT

tz-

fully

I3.

Adjust VR205 on thF master supply

cuit

the supply) to obtain an output current of

2.05 amps

on the right side ot the supply

(F30

position and

clockwise

boald

potentioureter VR201

ciicuit

MASTER

31.50

Vl1-6.5 V switch to the

position.

reads 2.00 amps.

(maxinun).

(located

(!ead

LED Display) for a

V on the MASTER LED

MASTER A/v

the

circuit

on the right side

on the LED disptay).

(so

that the

across

on

boaid

the

contlot

cir-

of

26

oo

B&K 1660

c".",

MAINTENANCE

@@

,...

\:t

A nrr"

\

--,--/

Main lllaster

L_l L--l

Circll Boad

As

Viewed Frum tefl Side ol Supply

I

I
I
I

Fig. l8A.

Main slavP

craur' Boad {s vie*ed Frcn Bighl

Location Of Adiustments

z7

srde ol supply

(MaiD

Ci.cuit

Boards).

MAINTENANCE

B&K 1660

VB5O]

Fig.

14.

Set

4-6.5 V

switch
Connect the multimeter

put
lead output

.1-6.5
leading

(F30

the

position

to the V

terEinals of the

voltage

V

of 5,00 volts on

I

S;ve orspa,r'

188. Location
Vk-6.5 V

and

the MASTER

position.

,F6.5

voltag€

level

atrd adjust

contlol to

the multimele!.

ta

7F

Of

AdjustEents

switch

across

V SUPPLY

tle out-

obtam a

6

to the

A,/V

to

tne

PanelFronl

(Metering

I

And Trackiag

sr

ls

Boards),

I6.

Adjust trimmter potentiometer
t}lat the MASTER/IF6.5

Ieaals

17.

Set the ITASTER

position,

18.

Connect a 1 0 load
more) across

,F6.5
Beter

Adjust
to obtain an
the multiEete!).

Adjust

20.

tha.t the MASTER/4-6.5

also leads

5.0 volts.

V SUPPLY and

to lead the output

t}le 4-6.5 V voltage

trirlme! potentioDeter

A/V switch

the output

output of

5,00 amps.

VR6OZ

V

LED Dispray

to ttle

(lated

connect

5.00 amps

at 30 W

terminals

tle llutti-

curlent.

tevel

1,rR603

V LED Display

of the

controt

(read

so

A

or

oD

so

Slave Supply

1.

z8

!R602

Vierr From

Fig, 18C, Location

Aud Metering

Connect an accurate
+1/Z
vottage
SLAVE

digf EultiEeter

at the output

SUPPLY.

\i F60l

Right Sid€

Of Adjustnents.

0f Supply

AdjustEerlts

(t0.1%)

to Eeasule

telmidals

external

the dc

of

the

MAINTENANCE

B&K 1660

Z. Disengage

switches
power

erating

3. Set the SLAVE VOLTAGE contlols
COARSE and
counte!clock\rise).

4. Adjust trirbE:e!
the
the

o{

Set the SLAVE

5.
COARSE and FINE) to maximuE
clockwise),

6. Adjust trimmer
the Eain slave cilcuit board
the
as close to 31,50 volts

mararl .. n^acilala

?. Set the SLAVE A/V

sition.

Adjust

8.
the slave LED display circuit
cated on the
hind the SLAVE LED Display) lor a
reading of 31.5 V on the SLAVE IlD

Display.
Set

9.
sitior.

10,

Short the
te!minals

11. Rotate
fully clockwise

12, Adjust

board

supply) to obtain an output curi€nt of

2.05 amps

supply

Eain slave circuit boald

left side of the supply) for

-15

mV

left side of

tlirlldrer

the

(located

both

Goth

is in

dode,

FINE) to nrinillruEl

mV on the multimeter,

t15

left

SLAVE A/9 swi'tch

SLAVE

together.

SLAVE

the

vRZ05

on the slave supply circuit

(read

TRACKING mode

sFitches out) so that the

the lNDEPerdent op-

potentiorDete!

VOLTAGE

potentiom€ter

the supply) fo!

switch to the V

potentioEeter VR201 on

side of the supply

SITPPLY output

CURRENT control

(maximuo).

on the left side of the
on the LED display).

VR204

(located

controts

VR201

(located

(on

the rnulti-

boald

to tbe A

a reading

a reading

(both

lfully

on

{both

({ully

po-

(lo-

be-

po-

on

on
on

Z. Set the

midrange
FINE
minimua

3.

Connect
SUPPLY outputs
tage.

4. Discolnect
MASTER SIIPPLY outputs

across

5, Adjust

the main slave cilcuit board
the left

exact saEre reading
PLY output as was
TER SUPPLY output
mum MASTER SUPPLY output

-15.7?
output voltage as close to

tbe SLAVE

6. Set the SLAVE CURRENT control to
nidranee and set both
FINE MASTER VOLTAGE

maximum

7.

Connect the
SUPPLY outputs and
tage.

Disconnect the multimeter f.om the

8.
MASTER SITPPLY outputs and connect it
acloss the SLAVE SI'PPLY outputs.

Adjust VR501

9.
the
hind the POVER and TRACKNG
switches)
multimeter is the same as it
the MASTER output tefminals.
the multimeter to the MASTER output

telminals
tage is identical.

V Soppry O""'load Tbreshold Adjustbent

+6.S

SLAVE CIIRRENT control

and set

MASTER

(f

ully counte!clockwise).

the multiEleter

SLAVE SUPPLY outputs.

the

triBlDcer

side

mV adjust VRZoZ to obtain ar

SI'PPLY

(fuuy

lo\rer flont

until the voltage read flom the

and verify that the output

both

VOLTAGE

and measuie the

multiEeter

the

potentiomete!

of

l]lultimeter

supply) to obtain the

the

fo!

present

(e.9.,

as

clockwise).

(Iocated

panel

circuit boald - be-

If noti repeat

th€ COARSE and

controls to

to the MASTER

trom the

and connect

VRZ02 on

(located

SLAVE SI'F

the

at the MAS-

if the maxi-

voltage is

-15.??

possjble).

th€ COARSE

cortiols to

to the

measule

at the center ol

MASTER

was

this

mV at

the

across

Retum

vol-

and

vol-

vol-

step.

to

it

on

Slave Setie* Tracking Adjustm€nt

1.

Set the supply
Erode by engaging the
switch and releasing the right
TRACKING s\ritch.

to

TRACKING

the

left

SERIES

TRACXING

1. Set the
,F6.5

A/V slritch to the A

Z. Connect the

,F6.5

z9

(F30
position

v

V supply output telminals,

v/4-6.5 v

and set the

position.

multimet€! across the

switch

to

the

MASTER

MA]NTENANCE

B&K 1660

3.

Adjust the
maximum

-Adjust VR405 on the main
board
suppty tor a r.adins
the display.

5.

Adjusi

minimum

6.

Short R405 and VR405.

'7-

Preset
board
the trarsformer)

Increase voltage

8.
to approximately

Slowly

9.

ci!cuit
approxrmately I V).

10.

Use the

the output voltage to 5.2 volts-

11.

Tuln VR403 on

board

supply) Iull-r' clockwise.

12.

Conneci a variable
lated to handle a

.4-6.5

(fully

(Iocated

,1-6.5

(4

VR404

mounted on the heat

adjust

just

,F6.5

(located

clockwise).

on the right

V Voltage

v).

(located

fuliy

with front panel

?.00 V

VR404

activates

V Voltage

the main master

on the righi side

power

V Voltage CoDtrol

master circuii

side of

-0.0.

A.5n

nf

Control

or the

clockwise.

on displav.

lmtil

(voliage

CoDtlol to adjust

(load

load

of at leasi

ci?cuit

sink behind

control

overvottage

diops

cilcuit
of the

must

30

V

to

the

oh

to

be

Wl

across the

r2 " F.r

MASTER LED Display
current oI

13. Adjust VR403 couterclockwise
output
meterl drops by 5 to 6 mv.

14. Turn the
counte!clockwise

15.

Tuln VR40Z on the main Easter cilcuit

board

supply) fuUy counterclockwise.

16. Adjust VR40Z clocklvise rmtil the 5A
OWRLOAD indicator first Iights.

INSTRUMENT

Because
equipment
calibration.

upon B & K-hecisioD
maintain
ized

service agencies fo. this pulpose,

this

service, even if ihe irstrument
longer
given
TIONS

'nal

"halg.

required for

a network of B & K-Plecision

under warranty, fol1ow

in the WARRANTY

"-.tion

,1-6.5

:diuqt

exactlv

voltage

1F6.5 V

(located

REPAIR SERVICE

of the specialized

manv custor.ers plefer

of this manua . There

for irslrum-nr<

V supplv

're

5,35 A.

{read

Voltage Control fully

(minirouEr).

on the right side of the

instrument repair ancl

for this

SERVICE INSTRUC-

outprrt termr

r

l.r

shoes an output

frorn the drulti-

skills and test

service.

the inst?uctions

our of

q-

tl..t tle

ultil the

to relv

author-

To use

is no

is a nom-

lvarrant!.

We

30

YARRANTY

B&K 1660

U.SA- &d

For

SERVICE INSTRUCIONS

its Ovetseas Te!|'itodes)

1. Refe! to the MAINTENANCE
manual fo! adjustments

Z. If the above-m€ntioned

yout

If

tact

with
double-packed),

name arld addFess.

to the nearest
closed with unit),

you!

list of autholized B &

your

distlibuto! fo!

unit,

Enclose

B & K-Prccision

the name

B &

K-h.ecisioa MA€ rNrER Afio{AL conp.

AIso use this address

section

that may be applicable.
does not

pack

aJId replacement palrts

it securely

a letter desclibing

Deliver

K-hecirioD

Factory

1,1-r)

Chicago, Illinois 60635

to, or ship PREPAID

selvice agencies bas been misplaced,

your

of

West Cortland Street

TeI

Tele::

nealest selvice agency, or wlite to:

Selvice OpeEations

(312)

889-8870

25-34?5

fo! techdcal inquilies

of

corlect the

(preferably

authorized service agency

you!

B & K-Plecision instluction

ploblerD you

the

orders.

ale

experiencing

in the oliginal calton o!

ploblem

(UPS

plefelled

and irclude

(see

you!

in U.S.A,)

list en-

con-

IIMITED

B&K 1660

ONE-YEAR WARRANTY

MA€ INTEP AflOIVAL COPP.

its B & K-hecfuioD

defects

flom

of Euichas€.

MA€ wrll.

product
contractor
chase date in the fo"E of a sales

coEpleting and mailing
B & K-hecbio!,

(15)

prcduct
ttrrtrb€t i3 alte.ed

out
tation
E:ay Dot apply to

o!

To obtain wallanty

days from

ElcloaioDs: This

cr as a result ol tDautholized

MA\E

lixoitatior

of

iD worklcajlship

corDponent

or

the

t}le

shall Dot

daloages resulting

incidental oI coDsequential

you.

product,

and Daterials

without charge.

parts

factory

6,1111

West

date

par'lanty

defaced or removed-

upon

service

coverage

the enclosed

Cortland

purchase.

of

does

be liabte

warrants to the

and the

deLivery to

department,

leceiDt.

in the U.S.A,,

rot appfy b the ev€ot

fo!

flol3 loss of use.

cohponent

peliod

fo! a

repau

walrajlty registration cald to

Street, Chicago, Iuinois 60635 within fifteen

altetations or lepairs.

any

daEages,

o!

feplace, at its option, defective

an

autborized B & K-hecision service
accor:rpanied

this

consequential

SoEe

so the above limitatiou or exclusioD

origidal

palts

ploduct

th€reot, wiu

one

of

Eust be

misu5e

of

It is void if the 6eria.l

damages, including

states

putchase!

year

florl|

ploof

by

legistered

c abu.se ol the

do not allow liEi-

be ftee

the da.te

of the

MAXI=g

that

pur-

by

with-

This warranty gives you

which vary floD

your

Fo!
wbo Eray be authorized
ttacto!, If warranty
B & K-Pleciai@ Selvice
60635,

its overseas
Pr€cbion

properly packaged

B & K-PrccieioD Test

pioducts

state to state.

convenience we

selvice cannot be obtained

terlitories. In othe!

whicl

specilic

suggest

to Eahe lepairs o!

DepaltEent,

to avoid daEage

Instrun:ents walrants products

countlies,

it se s,

ghts

and

].ou

you

contact

car lefer

6.lj(l West Cortland
i! shipment.

your

each

oay also have other lights

B & K-hecirion distlibutor,

you

to the nea-rest

localy,

Street, Chicago, Illinois

sold only

distributo!

please

walrants the B & K-

selvice coo-

send the uDit to

in the U.S.A. aIId

NOTES

B&K 1660

33

NOlES

B&K 1660

34

TEST INSTRUMENT

B&K 1660

SAFETY

(continued

an

Use

aIl insulated

srj}faces are not da-mp

Use the tiEe-ploven

6.

instrubent

object that could

7.

When
preseit

tlansfolme!,
the equipBent is

Some equiphent with a

power plugs,
leceivers and audio

chassis to
serious shock hazard
present
equipment unde! test may lesult
test instruEent to a
equipEent, ahl,ays couect ajl
the equiproent unde! test. The
Iation Transfolmer,
Eost applications.
equipbent as
earth elound cbassis.

insulated floor haterial

work

surlace on which

o! wet,

"one

probe.

testing ac

on sorle

plotect

a

poweled

etc. any

is the

datrgelous shock hazard,

'hot

pa-"ticularly

Be

ploeide

power

tirae the equiprlert

tuhed off.

"hot

equipErent.

the custoBe!. When

"hot

or Model 1653
To be

chassis" unless

floDo inside flont

or a large, insulated lloor Eat

place

to

hand

in the

careful

good

a

eqdipment,

input

two-wire ac

chassis"

exists if the

ground

cilcuits

t1pe. This

A

frolt connecting an ea.lth

chassis".

isolatiolr tlanstorl]ler between

B & K-heci6ion Model TR-110

on the safe side, treat all

you

pocket"

to

retun

reEeEtber that ac line voltage is usually

as

such

is comected to an ac outlet, even if

power

plastic

o! 1655 AC Power Supply

cord, includidg soroe v/ith

the cabinet is removed for

chassis is touched, Not only does this

but darlage to test instruments
To rDak€ measurements

are sure it has an isolated

cove!)

to stald on, and

equipEent; and Eake

tecbnique

avoid

o! wooden cabinet

contacting

path.

on-off

the

includes

while

a rearby

switch, fuses,

host

recett television

glound

in

the ac outlet

is suitable for

two-wile ac

certain such

haldling an

metal

power

polarized

insulates the

selvicing,

o! the

Iead of a

"hot

chassis"

and

or 1604 Iso-

powered

chassis or ajl

a

Never \Fork

9.
Tlaining ir CPR
toeoaed.

aloDe. So6eone

(cardio-pulEonary

should be nearby

resuscitation) filst aid is highly

to

render

aid if necessa-ly.

lecoE-

g(F#DE'-,J

B&K 1660

$A*

MA{SE9

6470

w'

INTEBIUATIOIIIAL

.

Ct*raSs

Co-tb,d

SL

ooFP.

tL 60695

4ao-5a5-9-0010

O1988

MAXTEC tNTEFNAT|oNAL

coRp.

Pf nl€d in Taiwan ROC

B&K 1660

B&K 1660

B&K 1660

B&K 1660

B&K 1660

B&K 1660

B&K 1660

B&K 1660