Racal Instruments 1994 Service Manual page 89

Universaltimer/counters
Table of Contents

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Table
3.10 - Pulse
Width
A
Measurement
1.
Turn
power
on.
2.
Select
PULSE WIDTH A
using
FUNCTION
keys
(n)
.
Default state
is
pos-
itive
pulse
width with
start-positive
and
stop-negative
50%
trigger points.
3.
Use
the slope
key
for
Input
A
(0)
to
change
to
negative
pulse
width by
toggling Input
A
slope to negative
(
\
).
Negative
pulse
width has
start-
negative and stop-positive
50%
trigger points.
4.
Connect measurement
signal to
INPUT A(2).
NOTE:
All
other controls are
set
automatically.
3-33

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