TB 9-6625-2250-35
(4) Press TI keys enter values using DATA keys as listed in (a) through (k) below:
(a)
INSTRUMENT STATE PRESET.
(b)
AMPLITUDE.
(c)
[MORE].
(d)
[IF ADJUST].
(e)
[IF ADJ OFF].
(f)
FREQUENCY then [CENTER FREQ] to 40 MHz.
(g)
SPAN then [ZERO SPAN].
(h)
AMPLITUDE then [LOG dB/DIV] to 1 dB.
(i)
CONTROL BW then [RES BW] to 2 MHz.
(j)
[VIDEO BW] to 300 Hz.
(k)
CONTROL SWEEP then [SWEEP TIME] to 50 ms.
(5) Adjust synthesizer/level generator amplitude to position the signal 2 to 3
divisions (2 to 3 dB) below TI reference level.
(6) Set synthesizer/level generator AMPTD INCR to 3 dB.
(7) Press TI keys as listed in (a) through (e) below:
(a)
AMPLITUDE.
(b)
[MORE].
(c)
[IF ADJUST].
(d)
[ADJ CURR IF STATE] wait for IF ADJUST STATUS messages to
disappear.
(e) SPAN then [ZERO SPAN].
(8) Press synthesizer/level generator FREQUENCY key and adjust frequency to
peak signal amplitude on TI.
NOTE
At 2 MHz setting, several minor peaks might be observed.
Select peak with highest amplitude.
(9) Press synthesizer/level generator AMPLITUDE key then INCR ⇓ key.
(10) Press TI MARKER ON key then [MARKER DELTA] key.
(11) Press synthesizer/level generator INCR ⇑ key.
(12) Press synthesizer/level generator FREQUENCY key and increase frequency for
a TI ∆ MKR indication between -0.02 and +0.02 dB. Record synthesizer/level generator
frequency indication as upper 3 dB frequency.
until ∆ MKR indicates between -0.02 and +0.02 dB. Record synthesizer/level generator
frequency indication as lower 3 dB frequency.
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