TB 9-4931-540-35
(16) Repeat (5) through (10) above.
(17) Disconnect rear panel OVEN REF OUT from 50-75Ω input.
(18) Reconnect rear panel OVEN REF OUT to EXT REF IN.
a. Performance Check
(1) Connect synthesizer/level generator OUTPUT 50Ω to low pass filter No. 1 input
and connect low pass filter No. 1 output to TI 50-75Ω input.
(2) Press keys and enter values using ENTRY keys as listed in (a) through (g)
below:
(a)
ENTRY INSTR PRESET.
(b)
ENTRY blue shift and then ENTRY CAL OFF.
(c)
ENTRY STOP FREQ to 40.1 MHz.
(d)
RBW-VBW-ST ENTRY RES BW to 30 Hz.
(e)
RBW-VBW-ST ENTRY VIDEO BW to 1 Hz.
(f) INPUT ENTRY RANGE to -15 dBm using ENTRY STEP ⇑ or ⇓.
(g) ENTRY REFERENCE LEVEL to -15 dBm.
(3) Set synthesizer/level generator as listed in (a) through (c) below:
(b) AMPLITUDE to -15 dBm.
(c) AMPTD INCR to 0.1 dBm.
(4) Press keys or set controls to values as listed in (a) through (d) below:
(a)
SWEEP ENTRY MANUAL to 13.31 MHz.
(b)
ENTRY CF STEP SIZE to 13.31 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.
(5) Adjust synthesizer/level generator amplitude, using INCR ⇑ or ⇓ keys, until TI
marker amplitude indicates -15 dBm.
(6) Press MARKER/CONTINUOUS ENTRY OFFSET key to on and then press
MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
(7) Press SWEEP ENTRY MANUAL key and then ENTRY STEP ⇑ key. TI
marker amplitude indication will be <-80 dBm.
(8) Press ENTRY STEP ⇑ key. TI marker amplitude indication will be <-80 dBm.