TB 9-4931-540-24
MARKER/CONTINUOUS ENTRY OFFSET to off.
(a)
SWEEP ENTRY MANUAL to 20.01 MHz.
(b)
ENTRY CF STEP SIZE to 20.01 MHz.
(c)
ENTRY blue shift and then ENTRY CAL ON and wait for TI to calibrate.
(d)
ENTRY blue shift and then ENTRY CAL OFF.
(e)
or
keys, until TI
(29) Adjust synthesizer/level generator amplitude, using INCR
marker amplitude indicates -15 dBm.
(30) Press MARKER/CONTINUOUS ENTRY OFFSET key to on and then press
MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
key.
(31) Press SWEEP ENTRY MANUAL key and then ENTRY STEP
TI
OFFSET amplitude indication will be <-70 dBm.
(32) Disconnect low pass filter No. 2 from TI, 50
feedthrough termination, and
synthesizer/level generator.
(33) Connect oscillator OUTPUT to TI 50-75
input.
(34) Press keys and enter values using ENTRY keys as listed in (a) through (h) below:
ENTRY INSTR PRESET.
(a)
ENTRY STOP FREQ to 20 kHz.
(b)
ENTRY blue shift and then ENTRY CAL OFF.
(c)
SWEEP ENTRY MANUAL to 6.4 kHz.
(d)
RBW-VBW-ST ENTRY RES BW to 300 Hz.
(e)
RBW-VBW-ST ENTRY VIDEO BW to 1 Hz.
(f)
MARKER/CONTINUOUS ENTRY COUNTER to on.
(g)
or .
INPUT ENTRY RANGE to -15 dBm using ENTRY STEP
(h)
(35) Adjust oscillator frequency and level controls until TI counter frequency
indication is as close as possible to 6400 Hz and amplitude indication is as close as possible
to 15 dBm.
(36) Press keys and enter values using ENTRY keys as listed in (a) through (g) below:
(a) ENTRY blue shift and then MARKER/CONTINUOUS ENTRY MKR OFS
STEP.
ENTRY blue shift and then ENTRY CAL ON.
(b)
SWEEP ENTRY MANUAL to 0 Hz.
(c)
SWEEP ENTRY MANUAL and then ENTRY STEP .
(d)
MARKER/CONTINUOUS ENTRY COUNTER to off.
(e)
MARKER/CONTINUOUS ENTRY OFFSET to on.
(f)
MARKER/CONTINUOUS ENTRY ENTER OFFSET.
(g)
(37) Press SWEEP ENTRY MANUAL key and then ENTRY STEP
key.
TI
marker amplitude indication will be <-80 dBm.
(38) Press ENTRY STEP
key. TI marker amplitude indication will be <-80 dBm.
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