eXact 240 - 1.3 Purpose; 1.4 Operation; 1.5 Applications

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240-0664

SECTION

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OPERATION

1.4

PURPOSE

THE

GENERAL

PURPOSE

OF

THE

TYPE

240

IS

TO

GENERATE

SQUARE,

TRIANGLE

AND

SINE

WA

VEFORMS

OVER A

CONTINUOUSLY

VA

RIABLE

FREQUENCY

RANGE OF

0.001

CPS

TO

10,000

CPS .

THESE

WAVEFORMS A

RE

AVAILABLE

SIMULTANE-

OUSLY

FROM

THE

DESIGNATED

JACKS

ON

THE R I GHT

HAND

SIDE

OF

THE

FRONT

PANEL

AND/OR

SINGLY

AS

SELECTED

FROM

THE

MA

IN

OUTPUT

TERMINAL•

OPER

A

TION

FOR

FIRST-TIME

OPERATION,

THE

FOLLOWING

PROCEDURE

SHOULD

BE

USED:

(A)

CHECK

FOR

STRAP

BETWEEN

THE

GROUND

POSTS.

(e)

SET

THE

PO

WER

sw1TcH

To

ON.

(c)

ALLOW A

TEN-MINUTE

WARM-UP

PER

I

OD.

(D)

SET

THE

OUTPUT

sw1TcH

TO

TRI

A

NGLE

w~

VEFORM.

(E)

TURN

OUTPUT

ATTENUATOR

(RED

CONCENTRIC

KNOB)

FULLY

CLOCKWISE.

(F)

SET

THE

TIMING

MULTIPLIER

SWITCH

AND

CYCLES/SEC

DIAL

TO

THE

DE-

SIRED

F"REQUENCY.

(G)

S

ET

THE

±DC

LEVEL

TOO

. ( S

WITCH

CLOSED)

POSITION

OR

TO

THE

OUT-

PUT

LEVEL

DESIRED.

(H)

CONNECT

THE

MA

IN

OUTPUT

AND/OR

SIMULTANEOUS

OUTPUT

TO

THE

SYSTEM,

CIRCUIT,

AND

OSCILLOSCOPE,

ETC.

(J)

CONNECT

THE

SIMULTANEOUS

SQU

A

RE

WAVE

OUTPUT

TO THE

EXTERNAL

TRIG-

GER

INPUT

OF

THE

MONITOR

OSCILLOSCOPE.

1.5

APPLICATIONS

(A)

GENERAL

WAVEFORM

SOURCE

FOR

RESEARCH,

ANALOG

COMPUTERS

AND

SYS-

TEMS

CHECKING

(B)

THE

LOW

FREQUENCY

SQUARE

WAVE

FOR

RESPONSE

CHECKS

(c)

THE

TRIANGLE

AS

RASTER

GENERATOR

(D)

LINEARITY

CHECKING

OF

INSTRUMENTS

OR

SYSTEMS

BY

VARYING

QC

LEVEL

AMPLITUDE

OR

FREQUENCY

WHILE

HOLDING

ONE

OR

BOTH

Or

THE

OTHER

PARAMETERS

CONSTANT

(E)

W

AVEFORMS

CAN

BE

DIRECTLY

MIXED

BY

PATCHING

TOGETHER

THE

SIMUL-

TANEOUS

AND

MAIN

OUTPUT

AT

THE

FRONT

PANEL

TO

PRODUCE

COMPLEX

WAVEFORMS.

IF

YOU

WISH

TO

QC

OFFSET

SOME

OF

THE

SIMULTANEOUS

OUTPUTS,

INTERNAL

ADJUSTMENTS

CAN

BE

MADE.