Datapulse 101 - Page 27

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a.
Turn the PULSE DELAY and PULSE WIDTH selectors to 10 p5
and their verniers fully clockwise. Set the REPETITION RATE
selector to 10 KHz with its vernier fully clockwise. Verify that
10 microseconds delay occurs between the reference trigger and
the output pulse.
Switch the PULSE DELAY and PULSE WIDTH selectors to 0. 1 MS
and the REPETITION RATE selector to 1. O KHz with all verniers
fully clockwise. Verify that a delay of 100 microseconds occurs
between the reference trigger and the output pulse for these
settings.
Turn the PULSE DELAY and PULSE WIDTH selectors to l. 0 MS
and the REPETITION RATE selector to 0. l KHz with all verniers
fully clockwise. Verify a delay of 1. 0 milliseconds for these
settings.
Set the PULSE DELAY and PULSE WIDTH selectors to 10 MS
with their verniers fully clockwise and turn the REPETITION
RATE vernier fully counterclockwise with its selector set to
0. l KHz. Verify a 10 millisecond delay.
Set the PULSE DELAY and PULSE WIDTH selectors to 0. l p.S
and the REPETITION RATE selector to 1.0 MHz with all verniers
fully clockwise. Verify a delay of 0. 1 microseconds that goes
down to less than 30 nanoseconds when the PULSE DELAY vernier
is turned fully counterclockwise. If not, trimmer capacitor C70
should be adjusted for the proper delay setting. C70 is mounted
on the pulse delay control assembly and is accessible from the
top as a screwdriver adjustment.
NOTE
Use a nonmetalic insulated screw-
driver for this adjustment.
CAUTION
Be sure the PULSE DELAY vernier
is fully clockwise before adjusting
C75.
Puls e Width Circuit
Monitor the POS OUTPUT with the real time scope synchronized
to either TRIGGER OUTPUT.
Set the GATE MODE to the NON-GATED position, the PULSE
MODE switch to SGL and the POSITIVE AMPLITUDE to a conven-
ient setting.
Set the PULSE WIDTH selector to l. 0 [LS and the REPETITION
RATE selector to 0. 1 MHz with both verniers fully clockwise.
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