9.3 Choosing the receiver attenuator
The Bode Analyzer Suite allows to configure the receiver attenuator of the device by selecting it in the
measurement configuration on the left hand side of the main window or in the hardware setup screen.
Figure 9-3: Choose the attenuator setting for Receiver 1 or Receiver 2 in the configuration area.
The receiver attenuator reduces the signal level that arrives at the receiver. This leads to a higher full-
scale measurement range when using higher attenuator values. The following table shows the relation
between attenuator value and full-scale input range:
Attenuator setting Bode 100 full-scale input measurement range
0 dB 100 mVrms
10 dB 316 mVrms
20 dB 1 Vrms
30 dB 3.16 Vrms
40 dB 10 Vrms
Depending on the signal size/level that needs to be measured, the input attenuator must be chosen.
Try to use the lowest possible input attenuator that does not result in an overload warning.
This will give you the best possible signal to noise ratio.
Receiver level indicator
The receiver level indicators in the status bar show how much signal level arrives at the receiver. Best
is a level close to the full-scale but no Overload.
Figure 9-4: Receiver level indicator showing excessive signal causing an overload.
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OMICRON Lab
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