CHECK 39B OSCILLATOR FREQUENCY HI/LOW BITS
AND
LED goes off
OMAU
VERIFY
LED
ON
FREQUENCY ADJUST
UNITS DIGIT
THUMBWHEEL
POWER
LED
LED
FREQ
HI
FREQ
LOW
LOAD
VERIFY
THUMBWHEEL
THOUSANDS
DIGITS
[1] With the clock chain of the
oscillator being checked
powered down, note the zero
setting (mechanical zero)
of the phase meter [See NOTE 1]
[3] Set OMAU thumbwheels to 2000
[4] Depress
LOAD
depress
ON
switch (
PWR OFF
[2] At clock chain power switch, with
ROS/OFF
switch in
ROS
position,
lamp extinguishes)
The mechanical zero
may be offset
somewhat from the
actual zero mark
on the meter. This
mechanical zero is
referred to as zero
in this procedure
NOTE 1
on OMAU
button
Figure 1 — Oscillator Manual Adjustment Unit
[Figure 1]
[Figure 1]
DLP
539
PAGE 1 of 5
234-151-013
DEC 1995
Issue 8
