Boonton PIM 31 User Manual - Manual (Page 57)

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7.4.2 Time Mode
In Time mode IM products are displayed as a horizontally moving line, where the
position indicates the power level over the time. This display is very helpful to test
immediate PIM variations, like loose connections. Any change is immediately
visible. Time mode shows a 10 seconds window, but more information up to 10
minutes may be recorded. Move past traces to the window by touching, holding
and drawing it to right until the wanted information is appears.
The screenshot shows two IM signals IM3 and IM5 With -149.0 dBc IM3 exceeds
the reference limit of -153.0 dBc. IM5 measured -176.8 dBc. Frequency
information of the IM signals is provided in the numeric displays. In this example
(M3 is 846.5 MHz and IM5 824.0 MHz.