8163A/B, 8164A/B, 8166A/B User’s Guide 115
Power Measurement 3
How to Set the Averaging Time
This is the length of time over which a signal is averaged. Longer averaging
times increase the accuracy and improve the noise rejection. Longer
averaging times also decrease sensitivity.
For averaging times of 1 second or less, a new measurement is shown at
the end of each averaging time. This is drawn in Figure . A new
measurement is shown on the display at each x.
Measurement with Tavg ~1 second
0 dBm 1.9999 mW 3.000 dBm 0.1 mW -40.000 dBm
-10 dBm 199.99 mW -7.000 dBm 0.01 mW -50.000 dBm
-20 dBm 19.999 mW -17.000 dBm 0.001 mW -60.000 dBm
-30 dBm 1.9999 mW -27.000 dBm 0.1 nw -70.000 dBm
-40 dBm 199.99 nW -37.000 dBm 0.01 nw -80.000 dBm
-50 dBm 19.999 nW -47.000 dBm 0.001 nw -90.000 dBm
-60 dBm 1.9999 nW -57.000 dBm 0.1 pW -100.000 dBm
-70 dBm 199.99 pW -67.000 dBm 0.01 pW -110.000 dBm
[RANGE] Upper Power Limit Resolution
For a Dual Power Sensor, you cannot set the averaging time of the slave
channel, channel 2, directly. By default, the averaging time of the slave
channel, channel 2, is the same value as that for the master channel,
channel 1. See
Table 12 on page -122 for more details.
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