Agilent Technologies 5000 Series manual EXTernalPROTection

3Commands by Subsystem

:EXTernal:PROTection

(see page 530)

Command Syntax :EXTernal:PROTection[:CLEar]

When the external trigger input impedance is set to 50Ω, the external trigger input is protected against overvoltage. When an overvoltage condition is sensed, the input impedance for the external trigger is automatically changed to 1 MΩ. The :EXTernal:PROTection[:CLEar] command is used to clear (reset) the overload protection. It allows the external trigger to be used again in 50Ω mode after the signal that caused the overload has been removed from the external trigger input. Reset the external trigger input impedance to 50Ω (see ":EXTernal:IMPedance" on page 174) after clearing the overvoltage protection.

Query Syntax :EXTernal:PROTection?

The :EXTernal:PROTection query returns the state of the input protection for external trigger. If the external trigger input has experienced an overload, TRIP (tripped) will be returned; otherwise NORM (normal) is returned.

Return Format {NORM TRIP}<NL>

See Also • "Introduction to :EXTernal Trigger Commands" on page 171

•":EXTernal:IMPedance" on page 174

•":EXTernal:PROBe" on page 175

178 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Reference