Symmetricom 58502A 58502A Command Summary, INPut, Summary, Parameters, DIAGnostic, Description, ALARM/STATUS, Keyword/Syntax, 58502A Command Summary

Chapter 4 Command Reference

58502A Command Summary

58502A Command Summary

Table 4-1 lists and briefly defines all of the commands that can be used to operate the 58502A.

Table 4-1. 58502A Command Summary

Keyword/Syntax	Parameters	Description
*CLS		Clears error queue.
*IDN?	returns unquoted	Returns identification string.
	string
:ALARm?	returns 0 or 1	0 = alarm is off, 1 = alarm is on. Alarm is on when any of the
		outputs are not functional. (There may be additional internal
		conditions that generate alarm.)
DIAGnostic		Diagnostic Subsystem (USED WITH OPTION 010 ONLY)
:CALibration		Node Only
:ROSCillator		Node Only
:EFC		Node Only
:ABSolute	Send:	Sets the absolute EFC (electronic frequency control) of the
	<EFC value> or	oscillator. Use UP or DOWN to adjust the EFC by the increment
	UP or DOWN	specified in the STEP command (see next command). For
		example, if present EFC value is 1000 and STEP value is 13,
		:EFC:ABS:UP will increase EFC value to 1013.
:ABSolute?	returns:	Query.
	<EFC value>
:STEP	<EFC increment	Increments the EFC value by this amount.
	value>
:STEP?	returns <EFC	Query.
	increment value>
INPut		INPUT Subsystem
:A:QUEStionable?	returns 0 or 1	Reports if there is a signal present on input A.
		0 = signal present
		1 = no signal present.
:B:QUEStionable?	returns 0 or 1	Reports if there is a signal present on input B.
		0 = signal present (not questionable),
		1 = no signal present.
:ALARm?	0,0,0 or 1,0,0 or	Reports the alarm status of devices connected to the input pins
	0,1,0	(6, 7) of the ALARM/STATUS port.
		0, 0,0 = no alarm exists.
		1, 0,0 = alarm from input A devices connected to pin 6.
		0,1, 0 = alarm from input B devices connected to pin 7.
:SELect	A or B	Enables either Input A or Input B. Use the query form to see
		which input is currently in use. This command also disables
		auto-switching.

4-4 User’s Guide