: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 |
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BUS | discrete | *TRG or GET command |
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EXTernal | discrete | “Event In” BNC port |
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HOLD | discrete | Hold triggering |
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IMMediate | discrete | Immediate triggering |
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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
∙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 |