:SOURce TRIGger:SOURce BUS EXTernal HOLD IMMediate specifies the

trigger source to advance the channel list during scanning.

Parameters

Parameter Name

Parameter Type

Range of Values

 

 

 

BUS

discrete

*TRG or GET command

 

 

 

EXTernal

discrete

“Event In” BNC port

 

 

 

HOLD

discrete

Hold triggering

 

 

 

IMMediate

discrete

Immediate triggering

 

 

 

Comments Enabling the Trigger Source: The TRIGger:SOURce command only selects the trigger source. The INITiate[:IMMediate] command enables the trigger source.

Using the TRIG Command: You can use TRIGger[:IMMediate] to advance the scan when TRIGger:SOURce HOLD or

TRIGger:SOURce BUS is selected.

Using External Trigger Inputs: With TRIGger:SOURce EXTernal selected, only one switchbox at a time can use the external trigger input at the HP E1300A/E1301A mainframe “ Event In” BNC port. The trigger input is assigned to the first switchbox that requested the external trigger source (with a TRIGger:SOURce EXTernal command).

Assigning External Trigger: A switchbox assigned with

TRIGger:SOURce EXTernal remains assigned to that source until the switchbox trigger source is changed to BUS, HOLD, or IMMediate. When the source is changed, the external trigger source is available to the next switchbox which requests it (with a TRIGger:SOURce EXTernal command). If a switchbox requests an external trigger input already assigned to another switchbox an error is generated.

Using Bus Triggers: To trigger the switchbox with TRIGger:SOURce BUS selected, use the IEEE 488.2 common command *TRG or the HP-IB Group Execute Trigger (GET) command.

Trig Out Port Shared by Switchboxes: See the OUTPut command.

Related Commands: ABORt, [ROUTe:]SCAN, TRIGger

*RST Condition: TRIGger:SOURce IMMediate

Chapter 5

HP E1366A/E1367A RF Multiplexers Command Reference 57

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Image 57
HP E1367A, E1366A manual ∙ Trig Out Port Shared by Switchboxes See the OUTPut command