Service manual

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Model 5304

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Operation

l(REAR)

AUTO

Figure 9D-3-7. Making Time Interval Measurements

1.

Connect

ac

power

to

5300A

ac

receptacle.

6.

2.

Turn

ac

power

"on"

with 5300A SAMPLE

RATE control. Adjust sample rate

for

desired display time.

3. Set

"Function" switch

to T.I. A to B,

with desired resolution. Ensure DELAY

control

is

full

ccw.

4. Set

ATTEN switches

for

both channels

to

XI00; AC-DC switches

and

SLOPE controls

switches

to

settings desired;

set

LEVEL

controls

to

PSET.

5. If

Start

and

Stop signals

are

from separate

sources, connect

the

Start signal

to

INPUT

A

connector

and the

Stop signal

to

INPUT

B

connector, then

set the

COM-SEP-CHK

switch

to SEP. If the

Start

and

Stop

signals

are

from

a

common source, connect

the

signal input

to

INPUT

A and set the

COM-SEP-CHK switch

to COM.

Adjust ATTEN switches until

a

stable

dis-

play

is

obtained.

Time Interval Holdoff (DELAY).

The

I)p]LAY control inserts

a

delay

of

about

100

psec

to 100

msec between

the

triggering

of the

START Channel

"A" and the en-

abling

of the

STOP Channel

"B" (see

Figure

B).

This delay

may be

used

to

measure relay

or

other mechanical

switch timing sequences without error

due to

contact bounce.

It may

also

be

used

for

measurements

on

pulse trains;

for

example from

the

start pulse

to a

later

pulse,

in the

presence

of

intervening pulses.

To use the

DELAY, proceed

as

follows:

a. If the

desired delay

is

known,

it

may be set and

measured

by

selecting

T.I. A to B and CHK and

setting DELAY control

to the

desired

delay time.

The

measurement

may

then

be

made

by

switching

COM-

SEP-CHK

in

step

5.

9D-3-8