TB 9-6625-1914-24
t. Disconnect TRACKING GEN OUT from INPUT and position TI controls as listed
in (1) through (7) below:
(1) FREQUENCY dial to 0 kHz.
(2) RANGE switch to 0-30 kHz.
(3) FINE TUNE control centered.
(4) BANDWIDTH switch to 300 Hz.
(5) SCAN WIDTH switch to PER DIVISION.
(6) PER DIVISION switch to 1 kHz.
(7) 20 kHz MARKERS switch IN.
u. Set SCAN TIME PER DIVISION switch to 50 ms and VIDEO FILTER switch
to OFF.
v. Center LO feed through signal at CENTER FREQUENCY graticule on display
with ZERO ADJ. Dial should be accurately set to 0 kHz.
w. Set RANGE switch to 0-300 kHz counting 20 kHz markers as they pass CENTER
FREQUENCY graticule on display. Center the 15th marker (300 kHz) on CENTER
FREQUENCY graticule line.
x. Adjust 300 kHz ADJ so that dial reads 300 kHz when the 15th marker is centered.
y. Repeat v through x above until no further adjustment is necessary.
43. Tracking Generator Amplitude
a. Performance Check
(1) Connect multimeter to TRACKING GEN OUT connector.
(2) Position TI controls as listed in (a) through (e) below:
(a) RANGE switch to 0-300 kHz.
(b) FREQUENCY dial to 100 kHz.
(c) SCAN WIDTH switch to ZERO.
(d) TRACKING GEN LEVEL switch to CAL 100 mV.
(e) 20 MHz MARKERS switch OUT.
(3) If multimeter does not indicate between 96.5 and 103.5 mV rms, perform b below.
(4) Disconnect multimeter and connect TI to frequency counter.
(5) Set TRACKING GEN LEVEL control fully cw, and adjust FREQUENCY dial
and FINE TUNE controls for a 50 Hz indication on frequency counter.
(6) Disconnect frequency counter and reconnect multimeter to TI TRACKING
GEN OUT.
(7) Set TRACKING GEN LEVEL control to CAL 100 mV.