Analog Duplex System
Subject to Export Control, see Cover Page for details.
8-13
Audio Level Units
Sets the unit of measure for AF Level measurements to V, dBV or dBr. The dBr setting creates a
zero reference point at the time the unit of measurement is changed.
For example, if the current audio level reading on the AF Meter is -12.47 (dBm) and the Level
unit of measure is changed to dBr, the Audio level reading immediately updates to 0.00 dBm.
Subsequently, if the input audio level drops to -13.47 dBm, the level on the AF Meter indicates
-1.00 dBr, the difference between the reference level and current level. To reset the reference
level, switch the unit of measurement to another value, then re-select dBr.
The available Unit of measurement is limited by the selected Source
. For example, when
Balanced is selected as the source option, V is not available as a unit of measurement.
Measurement Averages
The number of measurements taken to calculate the average values can be set individually using
the Measurement Averages fields. Valid range values are from 1 to 250.
SINAD/Distn Frequency
Sets frequency at which SINAD and Distortion are measured.
SINAD/Distn Width
Sets Notch Filter bandwidth for SINAD and Distortion measurements.
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