TB 9-4931-540-35
(f) ENTRY STOP FREQ to 40.1 MHz.
(g) ENTRY dB/DIV to 1 dB.
(h) RBW-VBW-ST ENTRY RES BW to 3 Hz and wait for TI to calibrate (≈10
sec).
(i) INPUT REF LVL TRACK to off.
(j) ENTRY blue shift and then ENTRY CAL OFF.
(k) ENTRY SAVE and then 1.
(5) Set synthesized/function generator for a sinewave, 20 Hz, -25 dBm output.
(6) Press SWEEP ENTRY MANUAL key and enter 20 Hz using ENTRY keys.
(7) Record TI marker amplitude indication in table 6.
(8) Repeat technique of (5) through (7) above using remaining settings listed in
table 6.
Table 6. 50Ω Flatness
Synthesizer/function
generator
Test instrument
frequency and TI
marker amplitude
indications
SWEEP ENTRY
(dBm)
MANUAL settings
20 Hz
2 kHz
20 kHz
50 kHz
100 kHz
(9) Disconnect synthesizer/function generator SIGNAL from TI 50-75Ω input.
(10) Connect synthesizer/level generator OUTPUT 50Ω to TI 50-75Ω input.
(11) Press keys and enter values using ENTRY keys as listed in (a) through (d)
below:
(a)
ENTRY RECALL and then 1.
(b)
RBW-VBW-ST ENTRY RES BW to 10 Hz.
(c)
ENTRY blue shift and then ENTRY CAL ON.
(d)
ENTRY blue shift and then ENTRY CAL OFF.
(12) Set synthesizer/level generator as listed in (a) through (c) below:
(a) FREQUENCY to 100 kHz.
(b) AMPLITUDE to 25 dBm.
(c) AMPTD INCR to 0.1 dBm.
(13) Press keys and enter values using ENTRY keys as listed in (a) and (b) below:
(a) SWEEP ENTRY MANUAL to 100 kHz.
(b) INPUT ENTRY RANGE to -25 dBm using ENTRY STEP ⇑ or ⇓.
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