TB 9-4931-540-24
key. Average TI marker amplitude indication will
(9) Press ENTRY STEP
be <-80 dB.
(10) Repeat (9) above three times.
(11) Press keys and enter values using ENTRY keys as listed in (a) through (d) below:
ENTRY RECALL and then 1.
(a)
ENTRY CF STEP SIZE to 5 kHz.
(b)
SWEEP ENTRY MANUAL.
(c)
ENTRY STEP .
(d)
(12) Repeat (5) through (10) above.
(13) Press keys and enter values using ENTRY keys as listed in (a) through (d) below:
ENTRY RECALL and then 1.
(a)
ENTRY CF STEP SIZE to 100 kHz.
(b)
SWEEP ENTRY MANUAL.
(c)
ENTRY STEP .
(d)
(14) Repeat (5) through (10) above.
(15) Press keys and enter values using ENTRY keys as listed in (a) through (d) below:
ENTRY RECALL and then 1.
(a)
ENTRY CF STEP SIZE to 1 MHz.
(b)
SWEEP ENTRY MANUAL.
(c)
ENTRY STEP .
(d)
(16) Repeat (5) through (10) above.
input.
(17) Disconnect rear panel OVEN REF OUT from 50-75
(18) Reconnect rear panel OVEN REF OUT to EXT REF IN.
b. Adjustments. Refer to paragraph 6 d.
17. Harmonic Distortion
a. Performance Check
(1) Connect synthesizer/level generator OUTPUT 50
to low pass filter No. 1 input
and connect low pass filter No. 1 output to TI 50-75 input.
(2) Press keys and enter values using ENTRY keys as listed in (a) through (g) below:
ENTRY INSTR PRESET.
(a)
ENTRY blue shift and then ENTRY CAL OFF.
(b)
ENTRY STOP FREQ to 40.1 MHz.
(c)
RBW-VBW-ST ENTRY RES BW to 30 Hz.
(d)
RBW-VBW-ST ENTRY VIDEO BW to 1 Hz.
(e)
or .
INPUT ENTRY RANGE to -15 dBm using ENTRY STEP
(f)