Specifies the common-mode offset, in volts, applied to the signals generated at each differential output terminal. This property is valid only when you set the IQ Out Port Terminal Configuration property to Differential. Common-mode offset shifts both positive and negative terminals in the same direction.

To use this property, you must use the Active Channel property to specify the name of the channel you are configuring. For the PXIe-5645, you can configure the I and Q channels by using I or Q as the channel string, or set the channel string to "" (empty string) to configure both channels. For the PXIe-5820, the only valid value for the channel string is "" (empty string).

To set this property, the NI-RFSG device must be in the Configuration state.

Note For the PXIe-5645, this property is ignored if you are using the RF ports.

Supported Devices: PXIe-5645, PXIe-5820

Valid Values:

PXIe-5645: -0.8 V to 0.8 V if you set the IQ Out Port Load Impedance property to 50 ohms. -1.2 V to 1.2 V if you set the IQ Out Port Load Impedance property to 100 ohms.

PXIe-5820: -0.25 V to 1.5 V

Note The valid range is dependent on the load impedance.

Remarks

The following table lists the characteristics of this property.

Short Name IQ Out Port Common Mode Offset
Data type cdbl.png
Permissions Read/Write
High-level VIs N/A
Channel-based Yes
Resettable Yes