30 Agilent N5181A/82A MXG Signal Generators SCPI Command Reference
Basic Function Commands
Digital Modulation Subsystem—N5182A ([:SOURce])
:DM:IQADjustment:SKEW
Supported N5182A
[:SOURce]:DM:IQADjustment:SKEW <value>
[:SOURce]:DM:IQADjustment:SKEW?
This command changes the I/Q skew which is a time delay difference between the I and Q signals.
Equal and opposite skew is applied to both I and Q and affects the RF Output and I/Q output paths
simultaneously. A positive value delays the I signal relative to the Q signal, and a negative value
delays the Q signal relative to the I signal.
Example
:DM:IQAD:SKEW 5E–9
The preceding example sets the time delay difference between the I and Q signals to 5 nanoseconds.
*RST +0.00000000E+000
Range −800ns to +800ns
Key Entry I/Q Skew
:DM:IQADjustment[:STATe]
Supported N5182A
[:SOURce]:DM:IQADjustment[:STATe] ON|OFF|1|0
[:SOURce]:DM:IQADjustment[:STATe]?
This command enables or disables the I/Q adjustments.
Example
:DM:IQAD 1
The preceding example enables I/Q adjustments.
*RST 0
Key Entry I/Q Adjustments Off On
:DM:POLarity[:ALL]
Supported N5182A
[:SOURce]:DM:POLarity[:ALL] NORMal|INVert
[:SOURce]:DM:POLarity?
This command sets the digital modulation phase polarity.
This softkey is found under the I/Q menu.
NORMal This choice selects normal phase polarity for the I and Q signals.
INVert This choice inverts the Q channel signal.
*RST NORM
Key Entry Int Phase Polarity Normal Invert
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