DIAGnostic:SYSReset Subsystem

The DIAGnostic:SYSReset Subsystem controls and monitors the Watchdog Timer.

Refer to Chapter 1 for detailed information on the Watchdog Timer.

Syntax DIAGnostic:SYSReset

 

[:STATe]?

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:ENABle <state>

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:ENABle?

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DIAGnostic:SYSReset[:STATe]?

Returns the value of the Watchdog Timer state from the Watchdog Timer Control /

Status Register.

Parameters None

Comments • Returns a 1 if the Watchdog Timer is asserted; returns a 0 if the Timer is not asserted.

•Reading this register resets the Watchdog Timer.

•If the Watchdog timer is enabled, the state of the timer MUST be read before the Watchdog time elapses. If the state is not read before the time elapses, the Watchdog Timer asserts the VXIbus SYSRESET line.

DIAGnostic:SYSReset:ENABle <state>

Turns the Watchdog Timer ON or OFF.

Parameters

Parameter Name

Parameter Type

Range of Values

Default

 

 

 

 

<state>

numeric or discrete

0, 1, OFF, ON

0, OFF

 

 

 

 

 

 

 

 

Comments • A 0 or OFF turns the Watchdog Timer off; a 1 or ON turns the Timer on.

•CAUTION: When the Watchdog Timer is enabled (ON), the VXIbus backplane SYSRESET line is asserted if the Watchdog Timer is allowed to elapse. The Watchdog Timer is reset each time the state of the Timer is read by the DIAG:SYSR:STAT? command.

Example DIAG:SYSR:ENAB ON

Turns Watchdog Timer on

HP E1459A SCPI Command Reference 41