34 Agilent X-Series Signal Generators SCPI Command Reference
Basic Function Commands
Digital Modulation Subsystem—N5172B/82B ([:SOURce])
*RST +0.00000000E+000
Range ï€1 to 1
Key Entry I/Q Gain Balance
Remarks This command is effective only if the state of the I/Q adjustment function is set to
ON. Refer to the :DM:IQADjustment[:STATe] command.
:DM:IQADjustment:IOFFset
Supported N5172B/82B
[:SOURce]:DM:IQADjustment:IOFFset <value><unit>
[:SOURce]:DM:IQADjustment:IOFFset?
This command adjusts the I channel offset value.
When using this command to minimize the LO feedthrough signal, optimum performance is achieved
when the command is sent after all other I/Q path commands are executed, such as those that
change the internal phase polarity or adjust the modulator attenuator. If other adjustments are made
after minimizing is performed, the LO feedthrough signal may increase.
The variable <value> is expressed in units of percent with a minimum resolution of 0.025.
*RST +0.00000000E+000
Range ï€20.000 to 20.000
Key Entry I Offset
Remarks This command is effective only if the state of the I/Q adjustment function is set to
ON. Refer to the :DM:IQADjustment[:STATe] command.
:DM:IQADjustment:PHASe
Supported N5172B/82B
[:SOURce]:DM:IQADjustment:PHASe <value><unit>
[:SOURce]:DM:IQADjustment:PHASe?
This feature allows adjustment of the absolute phase of the internal I/Q channel by rotating both I
and Q, and so adjusting the relative phase of the RF carrier. For MXG’s with Option 012, this is the
only way to adjust the phase for a unit with an external LO.
NOTE The I/Q signal will be scaled down by 0.7071 for all phase offsets except 0. Use - 360 or +360,
if it is desirable to maintain a constant power level with the ALC off while adjusting the I/Q
phase.
The variable <value> is expressed in units of degrees with a resolution of 0.01 degrees. <unit> can be
nothing or DEG for degrees.
*RST +0.00000000E+000
Range ï€360.000 to 360.000
Key Entry I/Q Phase
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