TB 9-6625-2094-35
(7) Adjust OUTPUT step attenuator to 0 dBm.
(8) Alternately adjust OUTPUT VERNIER control for a +3 and -6 dBm reading on
TI OUTPUT meter while adjusting meter board POT C (fig. 2) for +3 dBm and POT D for -
6 dBm indications on the measuring receiver. Repeat the above until no further
adjustments are required (R).
11. Output
Level Flatness
a. Performance Check
(1) Position controls as listed in (a) through (e) below:
(a)
FREQUENCY VERNIER control to CAL.
(b)
Set FREQUENCY switches to indicate 050.000 MHz.
(c)
MODULATION MODE switch to CW.
(d)
OUTPUT step attenuator control to -10 dBm.
(e)
OUTPUT VERNIER control for a -7 dB indication on measuring receiver.
NOTE
Do not change OUTPUT VERNIER control setting after this
point.
(2) Press RATIO (lit) on the measuring receiver and adjust FREQUENCY switches
from 010.000 MHz to 500.000 MHz. Measuring receiver indication will stay between -.75
and +.75 dB over the entire range.
(3) Press RATIO (not lit) on the measuring receiver.
(4) Position controls as listed in (a) through (e) below:
(a) FREQUENCY VERNIER control to CAL.
(b) Set FREQUENCY switches to indicate 050.000 MHz.
(c) MODULATION MODE switch to CW.
(d) OUTPUT step attenuator control to 0 dBm.
(e) OUTPUT VERNIER control for a -1 dB indication on measuring receiver.
NOTE
Do not change OUTPUT VERNIER control setting after this
point.
(5) Press RATIO (lit) on the measuring receiver and adjust FREQUENCY switches
from 010.00 MHz to 500.00 MHz. Measuring receiver indication will stay between -.75 to
+.75 dB over the entire range.
(6) Press RATIO (not lit) on the measuring receiver.