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Table 8. Time/Division Accuracy Check.
Table 9. Average Noise Level dBm (Maximum) (-30 dBm).

Calibration Procedure For Spectrum Analyzer An/Usm-489(V)1 (Type 492 W/Options 01, 02, 03, 08, And 21) Page Navigation
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TB 9-6625-2134-24
Figure 31. Resolution Bandwidth and Shape Factor.
b. Adjustments. If an out-of-tolerance condition is noted, perform adjustments listed
in paragraph 8 b above.
20. Sensitivity
a. Performance Check
(1) Position controls as listed in (a) through (m) below:
(a) FREQUENCY RANGE pushbutton for 0-1.8 GHz.
(b) FREQUENCY control to 500 MHz.
(c) VERTICAL DISPLAY 10 dB/DIV pushbutton on.
(d) MIN RF ATTEN control to 0 dB.
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