Performance Verification
4-34 2715 Spectrum Analyzer Service Manual
Check for the presence of the tiny pips at the top of the firs t peaks (first three
forNTSCorfirsttwoforPAL).
Check for the absence of noise (flat baselin e) between and after the peaks.
(The baseline should be below the bottom graticule line.)
10dB/DIV
100US/DIV (Digital Display)
Figure 4- 7: VideoGating Check Waveform ( NTSCIllustrated)
13. Turn off DISPLAY STORAGE (D).
14. Check that the display is similar to that illustratedin Figure 4--8.
Check for the presence of the tiny pips at the top of the firs t peaks (first three
forNTSCorfirsttwoforPAL).
Check for the presence of a noisy baseline beforeand after the peaks.
Check that that the correct number of peaks aredisplayed (seven) and that
they are stable (not flickeringor changing location).