TB 9-6625-2333-35
(c) CONTROL BW then [RES BW] to 1 Hz.
(d) FREQUENCY then [CENTER FREQ] to 150 Hz.
(e) MARKER MKR then [MARKERS OFF].
(6) Press TI keys and enter values using DATA keys as listed in (a) through (e) below:
(a) CONTROL BW then [VID AVG ON] to 5 Hz.
(b) CONTROL TRACE then [CLEAR WRITE A] and wait until VAVG 5 is
displayed above the graticule.
(c) INSTRUMENT STATE SGL SWP and wait for completion of new sweep.
(d) MARKER MKR to 30 Hz.
(e) [MKRNOISE ON OFF] to select ON.
NOTE
-2.27 dB amplitude correction is added for normalization to a 1
Hz noise bandwidth, Log amplifier response, and envelope
detector response.
(7) Add -2.27 dB to TI MKR amplitude indication. Calculated displayed average
noise level will be ≤-90 dBm.
NOTE
If any of the displayed average noise level indications are
within 1.10 dB of the appropriate specification, repeat (6) and
(7) above setting the number of video averages to 100 in (6) (a)
above.
(8) Press TI keys and enter values using DATA keys as listed in (a) through (h) below:
(a) FREQUENCY then [CENTER FREQ] to 1 kHz.
(b) MARKER MKR then [MARKERS OFF].
(c) CONTROL TRIG then [SWEEP CONT SGL] to select CONT.
(d) CONTROL BW then [VID AVG ON] to 5 Hz.
(e) CONTROL TRACE then [CLEAR WRITE A] and wait until VAVG 5 is
displayed above the graticule.
(f) INSTRUMENT STATE SGL SWP and wait for completion of new sweep.
(g) MARKER MKR to 1 kHz.
(h) [MKRNOISE ON OFF] to select ON.
(9) Add -2.27 dB to TI MKR amplitude indication. Calculated displayed average
noise level will be ≤-105 dBm.
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