Keysight Technologies J-BERT M8020A, Руководство по программированию, Страница: 260 / 502

260 Keysight M8070A Programming Guide
5 SCPI Command Reference
:CLOCk[:SOURce][?]
Syntax :CLOCk[:SOURce] ‘identifier’, <NRf>
:CLOCk[:SOURce]? ‘identifier’
Input
Parameters
‘identifier’: 'M*.DataOut' and ‘M*.DataIn’
<NRf>: CDR | CLK | SYS | AUXCLK | ECRevovery
Return Range CDR | CLK | SYS | AUXCLK | ECR
Description This command sets the source of the clock signal. It is supported by:
• M8061A
• M8062A
• M8046A
The availability of the different clock sources depends on the product
being controlled and possible even on installed product options (e.g.
CDR). The following are the different clock sources that can be selected:
CDR - Clock Recovery
CLK - Front panel ‘CLK IN’ connector
SYS - Internal clock generation
AUXCLK - Front panel ‘AUX CLK IN’ connector
ECRecovery - External clock recovery. Selection is done with the
command :CLOCk[:SOURce]:CRECovery:SELect.
For details, see :CLOCk[:SOURce]:CRECovery:SELect[?] on page 260
.
This query returns the present state.
This SCPI is applicable for M8061A, M8062A and M8046A.
Example :CLOCk:SOURce 'M3.DataIn', CLK
:CLOCk[:SOURce]:CRECovery:SELect[?]
Syntax CLOCk:FREQuency ‘Identifier', ‘Clock Recovery Identifier'
CLOCk:FREQuency? ‘Identifier'
Input
Parameters
‘identifier’: 'M*.DataIn'
‘Clock Recovery Identifier' - ECRecovery
Return Range ECR