30 Agilent X-Series Signal Generators SCPI Command Reference
Basic Function Commands
Digital Modulation Subsystem—N5172B/82B ([:SOURce])
:DM:INTernal:EQUalization:FILTer:STATe
Supported N5172B/82B
[:SOURce]:DM:INTernal:EQUalization:FILTer:STATe ON|OFF|1|0
[:SOURce]:DM:INTernal:EQUalization:FILTer:STATe?
This command enables or disables the I/Q internal equalization filter. This filter can be used to
correct and/or impair the RF and external I/Q outputs for the internal I/Q source. This filter will be
convolved with the ACP internal I/Q Channel Optimization filter if that filter is selected, the result of
which will be truncated to the center 256 taps. The equalization filter operates at 200 MHz, so all
equalization filters must be resampled to 200 MHz if they are sampled at some other rate.
NOTE Applying I/Q Delay or I/Q Timing Skew will reduce the actual number of coefficients
available in the hardware by 2 taps for every integral step of 5ns of delay or 10 ns of skew.
*RST Off
Key Entry Int Equalization Off On
:DM:IQADjustment:DELay
Supported N5172B/82B
[:SOURce]:DM:IQADjustment:DELay <value><unit>
[:SOURce]:DM:IQADjustment:DELay?
This command enables you to change the absolute phase of both I and Q with respect to triggers and
markers. A positive value delays I and Q. This value affects both the external I/Q out signals and the
baseband signal modulated on the RF output. This adjustment does not affect external I/Q inputs.
The variable <value> is expressed in seconds.
*RST +0.00000000E+000
Range ï€400 to 400 nanoseconds (ns)
Key Entry I/Q Delay
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:EXTernal:CMRange
Supported N5172B/82B
[:SOURce]:DM:IQADjustment:EXTernal:CMRange COARse|FINE
[:SOURce]:DM:IQADjustment:EXTernal:CMRange?
This command sets the common mode offset range voltage (COARse or FINE) for both the in–phase
(I) and quadrature–phase (Q) signals going out of the rear panel I and Q output connectors.
The common mode offset range is expressed in units of volts (mV–V). The COARse range corresponds
to a pre–existing adjustment range of 2.5 V. When the FINE range is enabled, the common mode
offset is limited to 100 mV.
*RST COAR
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