TB 9-6625-2250-35
(j)
CONTROL BW then [RES BW] to 1 kHz.
(k)
MARKER ON.
(l)
[SIG TRK OFF].
(m)
MARKER PEAK SEARCH.
MARKER MKR→.
(n)
[MARKER→ CF].
(o)
[MARKER→ REF LVL].
(p)
(q)
MARKER OFF.
(r)
CONTROL TRIG.
(s)
[SINGLE].
(t)
[SINGLE] wait for completion of sweep.
(u)
MARKER PEAK SEARCH.
(v)
[MARKER DELTA].
(4) Adjust TI knob ccw for a ∆ MKR indication between -0.9 and -1.1 dB and press
[MARKER DELTA] key.
(5) Adjust TI knob ccw for a ∆ MKR indication between -3.9 and -4.1 dB.
(6) Divide ∆ MKR frequency (in Hz) by ∆ MKR amplitude (in dB) to obtain slope of
[RES BW] filter and record result.
If ∆ MKR frequency is 380 Hz and ∆ MKR amplitude is 3.92 dB
EXAMPLE:
then slope would be: 380 Hz 3.92 dB = 96.94 Hz/dB
(7) Press TI keys as listed in (a) through (c) below:
(a) MARKER OFF.
(b) MARKER PEAK SEARCH.
(c) [MARKER DELTA].
(8) Adjust TI knob ccw for a ∆ MKR indication between -2.9 and -3.1 dB.
(9) Press TI keys and enter values using DATA keys as listed in (a) through (g)
below:
MARKER MKR→.
(a)
(b)
[MARKER NORMAL].
[MARKER→ CF].
(c)
(d)
SPAN then [ZERO SPAN].
(e)
CONTROL SWEEP then [SWEEP TIME] to 200 mS.
(f)
CONTROL TRIG.
(g)
[SINGLE].
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