Choice: Off | On
Default: On
Double-click or use the drop-down menu to enable or disable the automatic level control.
– The ALC circuit constantly monitors and controls the output power level.
– No automatic leveling occurs.
Choice: AUTO | PXI0 | ... | PXI7
Default: AUTO
Double-click or use the drop-down menu to select a bus for ALC hold signal path on PXI backplane.
Choice: Off | Track on Marker | Hold on Marker
Default: Track on Marker
Double-click or use the drop-down menu to select how the ALC circuit in the output module functions when the ALC is enabled. ▪ Off − ALC hold is turned off. ▪ Track on Marker − When playing a waveform file and a Marker is crossed in the waveform file, the ALC will track on the Marker. ▪ Hold on Marker − When playing a waveform file and a Marker is crossed in the waveform file, the ALC will hold on that Marker.
Choice: Auto | 100.00 Hz | 1.00 kHz | 10.00 kHz | 100.00 kHz
Default: Auto
Double-click or use the drop-down menu to select an ALC bandwidth.
This parameter is not available for all instrument model numbers and may be grayed out.
Choice: Fixed | Modulation | RMS
Default: Modulation
Double-click or use the drop-down menu to select one of the following reference signals when doing a power search.
– Power search uses a fixed 0.5 V reference.
– Power search uses the AC bias from the actual modulating signal.
– Power search uses a DC bias value equivalent to the value derived from the file header or the calculated value from the current I/Q data.
Set to to enable this parameter.
Choice: Normal | Minimum
Default: Normal
Double-click or use the drop-down menu to select the level of the output power control during a power search routine.
– Performs power searches without setting the internal step attenuator to its maximum setting. Glitches and power changes may be present during the search.
– Sets the signal generator's step attenuator to its maximum setting during power search to protect sensitive circuits.
Set to to enable this parameter.