Acterna SPM-32A - Display Averaging (AVRG)

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4.2 Operation and features SPM-32A ... SPM-36A
n*10 dB + ...
Example: Result = -23.5 dB:
-20 dB -3.5 dB
4.2.6.2 Display averaging (AVRG)
The instrument has an averaging facility for rapidly
fluctuating signals. It can be switched on and off by entering
the following sequence:
The averaging facility has the following effects:
– The time constant of the rectifier is increased
– The current level shown by the display is calculated using
the following formula:
Display value = (7 x old value + new value)/8
– The display resolution increases from 0.1 dB to 0.01 dB.
. . . -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 dB
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*
AVRG
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