Agilent Technologies n5181a - Modulating the Carrier Signal

Agilent N5181A/82A MXG Signal Generators SCPI Command Reference 29
Basic Function Commands
Digital Modulation Subsystem—N5182A ([:SOURce])
:DM:IQADjustment:GAIN[1]
Supported N5182A
[:SOURce]:DM:IQADjustment:GAIN[1] <value><unit>
[:SOURce]:DM:IQADjustment:GAIN[1]?
This command sets the gain for the I signal relative to the Q signal.
The variable <value> is expressed in units of decibels (dB).
*RST +0.00000000E+000
Range −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 “:DM:IQADjustment[:STATe]” on page 30.
:DM:IQADjustment:QSKew
Supported N5182A
[:SOURce]:DM:IQADjustment:QSKew <value>
[:SOURce]:DM:IQADjustment:QSKew?
This command adjusts the phase angle (quadrature skew) between the I and Q vectors by increasing
or decreasing the Q phase angle.
The <value> variable is expressed in degrees with a minimum resolution of 0.1.
If the signal generator is operating at frequencies greater than 3.3 GHz, quadrature skew settings
greater than ±5 degrees will not be within specifications.
Positive skew increases the angle from 90 degrees while negative skew decreases the angle from
90 degrees. When the quadrature skew is zero, the phase angle between the I and Q vectors is 90
degrees.
This command is effective only if the state of the I/Q adjustment function is set to ON. Refer to
“:DM:IQADjustment[:STATe]” on page 30.
Example
:DM:IQAD:QSK 4.5
The preceding example increases the phase angle by 4.5 degrees.
*RST +0.00000000E+000
Range −1E1 to +1E1
Key Entry Quadrature Angle Adjustment