Agilent X-Series Signal Generators SCPI Command Reference
345
Digital Signal Interface Module Commands
Digital Subsystem—Option 003 and 004 ([:SOURce])
*RST
+0.00000
Range
0 – 360 deg
Key Entry
Clock Phase
:DIGital:CLOCk:POLarity
Supported
N5172B/82B with option 003 or 004 or both
:DIGital:CLOCk:POLarity POSitive|NEGative
:DIGital:CLOCk:POLarity?
This command sets the alignment for the clock signal to positive or negative. Positive selects the
leading edge transition of the clock signal to align with the leading edge data transition and negative
selects the falling edge transition of the clock signal to align with the leading edge of the data.
Example
:DIG:CLOC:POL NEG
The preceding example sets the clock falling edge transition to align with the leading edge data
transition.
*RST
POS
Key Entry
Clock Polarity
:DIGital:CLOCk:RATE
Supported
N5172B/82B with option 003 or 004 or both
:DIGital:CLOCk:RATE <value>
:DIGital:CLOCk:RATE?
This command sets the clock rate. If an external clock is used, the rate set with this command must
match the external clock rate. Only clock phase settings of 0 or 180 degrees are valid for a clock
rate setting below 10 MHz.
The variable
<value>
is a expressed in hertz.
Example
:DIG:CLOC:RATE 100MHZ
The preceding example sets the clock rate to 100 megahertz.
*RST
+1.00008
Range
1 kHz–200 MHz
Key Entry
Clock Rate
:DIGital:CLOCk:REFerence:FREQuency
Supported
N5172B/82B with option 003 or 004 or both
:DIGital:CLOCk:REFerence:FREQuency <freq>
:DIGital:CLOCk:REFerence:FREQuency?
This command allows you to specify the frequency of the external reference supplied to the Freq Ref
connector. This command is valid only when the clock source is set to internal.