Chapter 4 Features and Functions

Alarm Limits

∙You can control the slope of the pulse from the alarm outputs (the selected configuration is used for all four outputs). In the falling edge mode, 0V (TTL low) indicates an alarm. In the rising edge mode, +5V (TTL high) indicates an alarm. A Factory Reset (*RST command) will reset the slope to falling edge.

Falling Edge Rising Edge

Note: Changing the slope of the output lines may cause the lines to change state.

∙Front-Panel Operation: To specify if you want to manually clear all four alarm outputs, choose from the following items.

DO NOT CLEAR , CLEAR OUTPUTS

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To select the output configuration for all four output lines, choose from the following items.

LATCH ON FAIL , TRACK PASS/F

To configure the slope of all four output lines, choose from the following items.

FAIL = HIGH , FAIL = LOW

∙Remote Interface Operation: To clear the specified output lines (or to clear all four lines), use one of the following commands.

OUTPUT:ALARM2:CLEAR

Clear alarm output line 2

OUTPUT:ALARM:CLEAR:ALL

Clear all four alarm outputs

To select the output configuration for all four output lines, use the following command.

OUTPut:ALARm:MODE {LATChTRACk}

To configure the slope of all four output lines, use the following command.

OUTPut:ALARm:SLOPe {NEGativePOSitive}

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