Agilent X-Series Signal Generators SCPI Command Reference 371
Digital Signal Interface Module Commands
Digital Subsystem—Option 003 and 004 ([:SOURce])
The sample or word represents a quantized analog voltage level. This analog voltage can be added or
multiplied. For a 16- bit sample, the range is from 0 to 65535 in offset binary or - 32768 to +32767 in
2’s complement mode.
Example
:DIG:DATA:QNEG ON
The preceding example enables negation of the Q data.
*RST 0
Key Entry
Negate Q Data
:DIGital:DATA:SIZE
Supported N5172B/82B with option 003 or 004 or both
:DIGital:DATA:SIZE <value>
:DIGital:DATA:SIZE?
This command selects the number of bits in each sample. A sample can have a maximum word length
of 16 bits.
Example
:DIG:DATA:SIZE 8
The preceding example sets the sample word size to eight bits.
*RST +1.600000000E+001
Range 4–16
Key Entry
Word Size
:DIGital:DATA:TYPE
Supported N5172B/82B with option 003 or 004 or both
:DIGital:DATA:TYPE SAMPles|PFSamples
:DIGital:DATA:TYPE?
This command selects filtered baseband data or unfiltered baseband data as the transmitted data
type.
If this command is executed while an ARB modulation format is active, the parameter choice is
changed, but it is not used by the interface module until a real- time modulation format is turned on.
Because a query returns the current choice, regardless of whether or not an ARB format is active,
you must query both states (data type and the modulation format) to know the signal generator’s
current setup.
SAMPles This choice selects DAC samples as the data transmitted.
PFSamples This choice selects pre- filtered samples which are unfiltered I and Q data.
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