HP 200B Datasheet

RESISTANCErJTU

N

ED

AUDIO

FREQUENCY

OSCILLATORS

A

NEW

·LOW

•

CONSTANT

•

LOGARITHMIC

PRINCIPLE

DISTORTION

ACCURAT,E

PALO ALTO

The

Model

200B

OF

OUTPUT

SCALE

rJ

INEXPENSIVE

HEWLETT

OPERATION

•

NO

·SMALL

•

HIGH

ZERO

rJ

SETTING

SIZE

OUTPUT

FLEXIBLE

•

CALIFORNIA

-

T-IOO

The Model 200BR

The HEWLETT-PACKARD Resistance-Tuned Oscillators are an

the

communication field. They

tory. They have been thoroughly

are

the

tried

result

and

of

a long research programina

tested

in

every

important

respect, bothinthe

new

development

well

equipped

labora-

laboratory andinthe

field. The inherent stability and fundamental simpicityofthese new oscillators make it possible for

to

produce

USES:

low

distortion makes them particularly valuableinmaking distortion measurements on audio amplifiers,
broadcast
rate

bridge

requiring considerable power. Their wide frequency range also makes them suitable for
super-sonic region.

These Resistance-Tuned Oscillators
development
and consequently

to

oasy
performance
main frequency dial,
increaosed because they are smallinsize and lightinweight. The simplicity
tuned

an instrument which meets

the

highest

standardsofperformanceata

These new Resistance-Tuned Oscillators are suitable for almost

transmitters, and

measurements. The

other

equipment. They provide an excellent sourceofvoltage for accu-

outputissufficienttodrive signal

. .

will

save valuab!e time

work. The frequency driftisnegligible

check

the

with extreme simplicity

principle and

no

zero adjustmentisnecessary. The

frequency responseofapparatus

of

operation. There are only

the

range selecting switch, and

the

sturdy construction

of

these oscillators assure youofdependability and con-

even

during the first few minutes

constant

quickly and accurately. They give

the

output

very

low

price.

every

generators

typeofwork. Their

and

other

equipment

workinthe

in

production testing, maintenance, and

of

operation

outputofthese oscillators makes it

labor~tory

three

controls on

the

panel:

voltage control. Their usefulness

of

this new resistance-

type

tinued high quality performance.

in

us

the

is

SPECIFICATIONS: The HEWLETT-PACKARD oscillators are designed and builttogive long trouble free service. High

is

quality parts are used throughout, and each oscillator

200B

are available. The Models 200A and

have a transformer-coupled output amplifier

matched load. The Models 200C and 200D have a resistance-coupled output amplifier

age

over their wide frequency range. These oscillators

subjected to rigid tests before shipment. Four standard models

which

will

deliver I watt into a

to

provide uniform output volt-

are

suppliedina relay rack mountingasthe

200AR,

200BR,

200CR, and 2000R, respectively.

FREQUENCY RANGE: Model 200A

Model

200B

Model 200C 20 cps. to 200

CALIBRATION:

Model

The dialiscalibrated directlyincycles for the lowest range. A switch selects the range and

2000

dicates the proper multiplying factor.
equivalent scale length

200A

35

cps.

to

20 cps.

7 cps.

is

to
to

from 20to30

35

kc.

20

kc.
kc.

70

kc.

Each

range covers

inches on the various models.

200B

180

degreesonthe

200C 2000

dial andsothe

in-

Range I 35-350 cps. 20-200 cps. 20-200 cps. 7-70 cps.
Range 2 350-3500 cps. 200-2000 cps. 200-2000 cps. 70-700 cps.
Range 3 3500 cps.-35
Range 4

STABILITY: Under normal

warm-up.

Plusorminus

kc.

temperature

20/,0 line voltage variations changes

2000 cps.-20

kc.

2000 cps.-20

20

kc.-200

conditions the frequency driftisless

the

kc.

kc.

than

2%

frequency

700-7000 cps.
7000 cps.-70

kc.

even including initial

less

than 0.2/'0'

No

zero settingisnecessaryonthese oscillators.

OUTPUT: The Models 200A and

ohms, 25 volts

on
The Models 200C and 200D
the

output

FREQUENCY The
RESPONSE:

20

cps.

The

150

The

70

kc.

DISTORTION: The total

amplifierisabout

output

voltage of the Models 200A and

toI5kc.

output

voltage of the Model 200Cisconstantwithin

kc.

output

voltage of the Model 2000isconstantwithin

rms.

distortion containedinthe wave-form of the various modelsiswithin the following

200B

will

supply one watt output into a matched resistance load of 500

open circuit. Special output irnpedances can be suppliedonorder.

will

deliver10volts into a

50 ohmsat1000

200Bisconstant within

cps.

1000

ohm

plusorminus

plusorminus

load.

The

plusorminus

internal impedance of

I decibel from

I decibel from

I decibel from 7 cps.

20

cps. to

to

limits:

HUM

VOLTAGE:

POWER SUPPLY:

TUBES:

MOUNTING:

Model 200A
Model

200B
Model 200C
Model 2000

The

hum

voltageisless

15

volts -

I

60

cycles - 50 watts.

Models 200A and

Models 200C and 2000 2 6J7, I

The

cabinet

models are mountedinan

200B

Less

than I/,o distortion above

Less

than I% distortion above

Less

than I/,o distortion from

Less

than I% distortion above

than

0.1

% of the

I 6J7, I

6F6,I6F5,I6V6,
6F6,I6V6,

attractive steel cabinet finishedinwrinkle

35
35

20

10

maxi

:rum output voltage.

I

5Z4.

cps.
cps.

cps.to150

cps.

I

5Z4.

kc.

grey.

The

panels

are wrinkle grey finish with machine engraved designations.

the

The relay rack mounting fits

standard

thick finishedinwrinkle grey with machine engraved designations.

is

chassis and

removable from the rear.

19"relay

rack

with

%"

spacing.

The

This

panelis3/16"

dust cover mountsonthe

Model

200A
200B
200C
200D

200AR

200BR
200CR
200DR

Mounting

Cabinet
Cabinet
Cabinet
Cabinet

Relay
Relay
Relay
Relay

Rack
Rack
Rack
Rack

Length Height Depth

16"

16"

16"

19"
19"
19"
19"
19"

Prices

are

net,

Prices

complete

and

with

data

subiecttochange

Patents

tubes,

HEWLETT-PACKARD

481

PAGE MILL ROAD

PALO ALTO,

8"
8"

8"

8%"

7"
7"
7"

8%"

f.o.b. Palo Alto,

Applied

without

For.

COMPANY

CALIFORNIA

California.

notice.

II"

II"

9"

9"
9"

9"
9"

9"

Weight

32#
32#

30#
32#
35#

35#

35#
37#

June

Price

$ 85.80

85.80

115.00

125.00

90.80

90.80

120.00

130.00

2,

1941

1

PRINCIPLEOFOPERATION:

with

regeneration

fier

increases

mal

drift

can

work.

Furthermore,
oscillator. To
unique
This
of
variable
generation

balancing

balancing

the

operating

condenser.

network.

This new
ciple
variable

now ordinarily used

frequency
lators. A t
and

frequency
shownatthe
actual
Model
frequency
put
what
because
fier.
the

perf

200A

range.

the

distortion

at

the

of

At

less

distortionofa

latorisas showninthis

supplied

the

effectiveQof

be

made

the

increase

circuit

circuit

throughafrequency

extremely

thermal

the

which

keep

the

pointisnecessary.

The

rangeismultipliedindecimal

oscillatorisfundamentally

audio

Y

pic

a I

oscil-

distortion

characteristic

right. Thisisthe

0 r

man

c e

of

the

over

most

of

the

With

full

out-

rises some-

lower

the

output

than

frequencies

ampli-

full

output

typical

oscil-

curve.

These

Resistance-Tuned

selective

this network so
small
driftisnot

usefulness

automatically

by

using low

of

that

magnified

this

resistance-tuned

selects

the

temperature

the

distortionata low valueatall

The

frequencyistuned

more

stable

for

..

a

..

is

2

~

I...

~

..

~

L•

..

:>

a

%

0

10

30

100

Oscillators

resistance

oscillation

asitisinthe

principle

proper

operating

timessothat

overa10

steps

and

DISTORTION AND

by

selecting

produces

CHARACTERISTICS

RESISTANCE- CA

300

Typical

OF

OSCILLATOR

1000

FREQUENCY

Characteristics

consistofa

capacity

stabilized

network. The amoli-

frequencyisstable.

coefficient

elements

case

ofabeat-frequency

we

have

point

for

no manual

toIrange

the

resistorsinthe

less

distortion

AMPLITUDE

PACITY

IN

3000

C.P.S.

'0000

in

developed

the

adjustment

by

meansofa

than

_.

---

amplifier

The

ther-

the

net-

oscillator.

re-

the

prin-

30000

a

SPECIAL

The
oscillators
of

time.

ing

oscillatorsatattractive

WARRANTY:

workmanship
rantyislimitedtorepairingorreplacing
I.J,/

our

m:L1VERY:

the
transportation

OSCILLATORS:

frequency

for

Special

can

be

stroboscopic

and

This

extended

work

more

accurate

resistance-tuned

several

can

be

decades

made

calibrations

audioorsuper-sonic oscillators we invite

prices.

We

warrant

foraperiod

of

each

one

instrument
year

from

instrumentsorparts

examination.

relay rack

Delivery

models

charges

will

two

will

be

made

weeks from

be

paid

on

the

cabinet

receipt

to

anywhereinthe

principleisexcellent

to

the

lower

because

your

sold

date

of

can

be

inquiry.

byusto
of

purchase.

models
order.

the

frequencyisstable

made.Ifyou

be

one
When

United

We

thereof

--------------------------------

radio

are

free

week

full

States.

for

frequency

prepared

from

Our

obligation

which

from

payment

many

special

region.

over

have

any

problems

to

supply

defects

in
under

provetobe

receiptoforder

accompanies

purposes.

Excellent

long

periods

requir-

special

material

this war-

defective

and

and

on

order