TB 9-4931-427-24
f. If necessary, adjust
ZERO
ADJ
FREQUENCY
for
a
0
indication
on
DIFFERENCE meter.
g. For Tracor Model 527E only, press PHASE meter ZERO pushbutton and if
necessary, adjust mechanical zero adjustment screw on phase meter face for 0 indication.
Press PHASE meter FS pushbutton and if necessary, adjust FS ADJ for full
s c a l e deflection.
h. Set TEST/OPERATE switch to OPERATE. Do not disconnect time/frequency
workstation from TI.
8. Frequency Difference Meter
a. Performance Check
(1) Connect time/frequency workstation 10 MHz output to function/arbitrary
generator 10 MHz In (rear panel).
using a 50 feedthrough termination.
NOTE
Allow settling time. It may be necessary to take an average of
TI indications.
(3) Set TI METER RANGE/DIFF MULT switch to 1010.
(4) Set function generator for a 10.000000009 MHz, 1 V rms output. If TI does
not indicate between +8.5 and +9.5, perform b (1) below.
(5) Repeat technique of (3) and (4) above using TI and function generator settings
listed in table 3. If TI does not indicate within limits specified, perform b (1) below.
Perform b (2) below for TI METER RANGE/DIFF MULT switch 107 settings.
Table 3. Frequency Difference Meter
Test instrument
Function generator frequency
Test instrument
METER RANGE/DIFF MULT
settings
indications
switch settings
(MHz)
Min
Max
1010
9.999999991
-8.5
-9.5
109
10.00000009
+8.5
+9.5
109
9.99999991
-8.5
-9.5
108
10.0000009
+8.5
+9.5
108
9.9999991
-8.5
-9.5
107
10.000009
+8.5
+9.5
107
9.999991
-8.5
-9.5
b. Adjustments
