53220A/53230A Input Signal Conditioning 4
Keysight 53220A/53230A User’s Guide 153
The colors and the relative strengths returned by the command indicate the
following:
Color Strength Description
None 0
Signal strength too low. May not be able to make measurement. For
continuous wave (CW) measurements signal power must be >
-27 dBm.
For pulse measurements signal power must be >-13 dBm.
Yellow 1 Signal strength weak, but acceptable.
Green 2,3 Good signal.
Red 4
Signal may have exceeded level at which an accurate measurement can be
made (>+19 dBm CW, >+13 dBm pulse). Signal levels >
+27 dBm may
damage the instrument.
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