TB 9-6625-1914-24
(c) BANDWIDTH switch to 10 kHz.
(d) SCAN WIDTH (red) switch to ZERO.
(e) INPUT ATTENUATION switch to 0 dB.
(2) Position IF plug-in controls as listed in (a) through (h) below:
(a) BASE LINE CLIPPER control fully ccw.
(b) SCAN TIME PER DIVISION switch to 50 ms.
(c) LOG REF LEVEL switch to 60 dBm.
(d) LOG REF LEVEL (LINEAR SENSITIVITY vernier) vernier control to 0.
(e) LOG/LINEAR switch to LOG (10 dB LOG on model 8552B).
(f) VIDEO FILTER switch to 100 Hz.
(g) SCAN MODE switch to INT.
(h) SCAN TRIGGER switch to AUTO.
(3) Slowly adjust FREQUENCY control from 110 to 1 MHz while observing display.
Average noise power level will be lower than -110 dBm (as shown in figure 8).
b. Adjustments. No adjustments can be made.
Figure 8. Noise level limit indication.
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