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344 Agilent X-Series Signal Generators SCPI Command Reference

Digital Signal Interface Module Commands

Digital Subsystem—Option 003 and 004 ([:SOURce])

:DIGital:CLOCk:CPS 1|2|4

Supported N5172B/82B with option 003 or 004 or both

:DIGital:CLOCk:CPS 1|2|4

:DIGital:CLOCk:CPS?

This command selects the number of clock cycles per sample. The command is used with parallel or

parallel interleaved port configurations. If this command is executed with a serial port configuration

or an IF signal type, the parameter value is changed, but it is not used by the interface module until

the port configuration is changed to parallel or parallel interleaved, and the signal type is changed to

IQ.

The query returns the currently set value. Regardless of the port configuration, you must query all

four states (clocks per sample, port configuration, data direction, and signal type) to know the

interface module’s current setup.

Example

:DIG:CLOC:CPS 2

The preceding example sets two clock cycles for each sample.

*RST 1

Range 1, 2, or 4

Key Entry

Clocks Per Sample

:DIGital:CLOCk:PHASe

Supported N5172B/82B with option 003 or 004 or both

:DIGital:CLOCk:PHASe <value>

:DIGital:CLOCk:PHASe?

This command sets the phase for the clock relative to the leading edge transition of the data. At

0 degrees the clock and leading edge of the data signal are aligned. Any phase value between 0 and

360 degrees can be used in the command, however, the signal generator rounds up or down to get 90,

180, 270 and 0 degree settings. For example, entering 140 degrees will cause the signal generator to

use the 180 degree setting.

If this command is executed when the clock rate is less than 10 MHz or greater than 200 MHz, the

resolution changes to 180 degrees, and the maximum phase defaults to 180 degrees.

Example

:DIG:CLOC:PHAS 90DEG

The preceding example sets the clock phase to 90 degrees. The clock signal leading edge transition

will be delayed by 1/4 of a clock period relative to the leading edge data transition.

Agilent Technologies N5171B User Manual

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