TRIGger[:STARt]:SOURce

DEXTernal: Samples are taken at a dual rate, using the signal on the Ext 1 input to pace pre-arm readings, and the signal on the Ext 2 input to pace the post-arm readings.

DTIMer: Samples are taken at a dual rate, using the TRIGger:STARt:TIMer1 rate to pace pre-arm readings, and the TRIGger:STARt:TIMer2 rate to pace the post-arm readings.

TTLTrg0 through TTLTrg7: The VXIbus TTL trigger lines.

EXTernal1: The HP E1429’s front panel "Ext 1" BNC connector.

EXTernal2: The HP E1429’s front panel "Ext 2" BNC connector.

HOLD: Suspend triggering. The TRIGger:STARt:IMMediate command must be used to trigger a reading.

TIMer: Use the period specified by TRIGger:STARt:TIMer1 as the sample rate.

VME: This source is used to either trigger readings from VME A24 register accesses, or to read measurement data out of the HP E1429 internal memory by reading a VME A24 address. This allows for faster data transfer rates over the VME bus than would be possible over HPIB. For more information on how to transfer data out over the VME bus using this command, see the VINStrument:VME commands.

Parameters

 

Parameter

Parameter

Range of

Default

 

Name

Type

Values

Units

 

 

 

 

 

 

source

discrete

BUSHOLD

none

 

 

 

DECLtrgDEXTernal

 

 

 

 

DTIMer

 

 

 

 

ECLTrg0ECLTrg1

 

 

 

 

IMMediate

 

 

 

 

EXTernal1EXTernal2

 

 

 

 

TIMer

 

 

 

 

TTLTrg0 to TTLTrg7

 

 

 

 

VME

 

 

 

 

 

 

Comments Executable when initiated: No

 

 

Coupled Command: This command is coupled to the TRIGger, OUTPut, and SENSe subsystems.

TRIGger Subsystem

Command Reference 277

Page 277
Image 277
HP E1429A manual TRIGgerSTARtSOURce, Bushold