Spectra Precision ProFlex 800 Reference Manual - Manual (Page 456)

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Set Command Library
$PASHS,NME
$PASHS,DRD
REF: Enabling/Disabling External Reference Clock
Function This command is used to enable or disable the external
reference clock mode.
Command Format Syntax
$PASHS,REF,s1[,d2][*cc]
Parameters
Examples
Enabling a 20-MHz external reference clock:
$PASHS,REF,ON,20*27
Disabling the external reference clock:
$PASHS,REF,OFF*47
Relevant Query
Command
$PASHQ,REF
Parameter Description Range Default
s1
Enables (ON) or disables (OFF) the exter-
nal reference clock mode.
ON, OFF OFF
d2
Frequency, in MHz, of the external refer-
ence clock
5, 10, 20 20
*cc Optional checksum *00-*FF -