AND
MSO
lamp lights;
PHASE METER
and
PHASE LOCK OVEN
TEMP
meter reset
between —1 and
+1 divisions
AND
pushbutton for 2 seconds
No
No
Yes
manual adjustment unit,
enter thumbwheel
thumbwheel hexidecimal
manual adjustment unit
arms operate
[156] Depress and hold
ON
METER
indication
[153] Is
PHASE
[159] Record oscillator
hex display and adjust
setting on oscillator
to same value
[160] On oscillator
depress
MSO
[155] Replace
FB214
pack
CLEAR PHASE ERROR — DISCIPLINED RUBIDIUM OSCILLATORS
[157] See
NOTE 6. Repeat
from Step 152
setting offset by
HEX 1E00 from reading
recorded in Step 159
pushbutton
and depress
LOAD
higher level of
technical support
for assistance
[150] Remove channel 1 probe
[149] Remove channel 2 probe
if connected
from PHR relay
pushbutton
from
FB214
pack
[151] Remove cliplead
[152] Momentarily
[154] Depress
ROS/OFF
switch to remove
power from clock chain having
phase error cleared (
OFF NORM
and
PWR OFF
lamps light)
(
PWR OFF
lamp extinguishes)
[158] Contact next
FB214
pack contains
thermistor monitoring
15 minutes to
oven control and
bridges that require
NOTE 6
stabilize
TAP
234-151-013
Issue 8
DEC 1995
PAGE 17 of 19
146
