Boonton PIM 31 User Manual - Manual (Page 56)

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I Reference Line Moves reference line for audible indication of
measurements that exceed the limit. Same as
Green/Red threshold of Bar graph in field mode.
Range -60 to -200 dBc
J Reference IM Selects if particular IM products (faster) or All IM
products (more comprehensive) that fall into the
receiving band of the PIM31. The test system can
show up to 4 IM signals at the same time.
K Frequency Graphic Display Frequency mode: IM signals
shown as vertical bar, indicating power and
frequency. Signal colors relate to numeric display
L Time Graphic display – Time Mode: IM signals shown as
moving horizontal line, indicating power (changes)
over time. Signal color relates to numeric display
M Sweep Graphic display Sweep mode. Signals are “swept”
over a range to test wide frequency range
N Numeric field 1 Strongest IM Signal in the receiver band
Information shown: Power (dBc & dBm) and IM
frequency
O Numeric field 2 Second strongest IM Signal in the receiver band
Information shown: Power (dBc & dBm) and IM
frequency
P Numeric field 3 Third strongest IM Signal in the receiver band
Information shown: Power (dBc & dBm) and IM
frequency
Q Numeric field 4 Forth strongest IM Signal in the receiver band
Information shown: Power (dBc & dBm) and IM
frequency
7.4.1 Frequency Mode
In Frequency mode IM products are displayed as vertical bars, where the
positions indicate the frequencies and the length the power level. Up to 4 signals
can be shown at the same time. Different colors are used when more IM
products are shown. PIM products are also shown numerically, where the colors
of the bars correlates with the colors of the 4 numeric displays.