TB 9-6625-2143-24
(7) Adjust MANUAL VERNIER for peak meter indication. If frequency counter
does not indicate between 9999 and 10,001 Hz, perform b (1) through (4) below.
Record indication.
(8) TI frequency display will indicate between 9997 and 10,003.
(9) Press AFC pushbutton.
(10) Press reset button on frequency counter. If AFC does not lock frequency to
within +1 Hz of indication recorded in (7) above, perform b (5) through (7) below.
(11) Press SCALE LOG 90 dB pushbutton and release AFC pushbutton.
(12) Set VERNIER (amplitude) control to CAL and RESOLUTION BANDWIDTH
control to 300 Hz.
(13) Adjust FREQUENCY control for 9200 Hz indication on TI display.
(14) Press AFC pushbutton. If the AFC does not tune TI to 10 kHz input signal and
b (5) through (7) was not performed in (10) above, perform b (5) through (7) below.
(15) Release AFC pushbutton and adjust FREQUENCY control for 10,800 Hz
indication on TI display.
(16) Repeat (14) above.
(17) Set RESOLUTION BANDWIDTH control to 3 Hz.
(18) Release AFC pushbutton and adjust FREQUENCY control for 9985 Hz
indication on TI display.
(19) Press AFC pushbutton. If the AFC does not tune TI to 10 kHz input signal and
b (5) through (7) was not performed in (10) above, perform b (5) through (7) below.
(20) Repeat (18) and (19) above at 10,015 Hz.
(21) Set RESOLUTION BANDWIDTH control to 100 Hz.
(22) Release AFC pushbutton and adjust FREQUENCY control for 10,500 Hz and
press AFC pushbutton.
(23) Pull out FREQUENCY control and rotate control ccw until AFC UNLOCK
light first comes on.
(24) Release AFC pushbutton. If frequency display does not indicate 9200 Hz or less
and b (5) through (7) below was not performed in (10) above, perform b (5) through (7)
below.
(25) Adjust FREQUENCY control for 9500 Hz and press AFC pushbutton.
(26) Pull out FREQUENCY control and rotate control cw until AFC UNLOCK light
first comes on. Then, rotate control ccw until light goes out.
(27) Release AFC pushbutton. If frequency display does not indicate 10,800 Hz or
greater and b (5) through (7) above was not performed in (10) above, perform b (5) through
(7) below.
b. Adjustments
(1) Set INPUT SENSITIVITY control to +10 dB, amplitude VERNIER to
midrange, and SWEEP MODE control to RESET.
5
