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[:STARt]:SOURce[<
n
>]
ARM[:STARt]:SOURce[<n >] <source > configures the arm system to respond to
the specified source(s). Unless one of the two sources is set to HOLD, both will be
active, and an occurrence of the selected event on either source will arm the system
for measurement.
The sources available are:
• BUS: The Group Execute Trigger (GET) HP-IB command or the IEEE-488.2
*TRG common command.
• ECLTrg0 and ECLTrg1: The VXIbus ECL trigger lines.
• TTLTrg0 through TTLTrg7: The VXIbus TTL trigger lines.
• EXTernal1: The HP E1429’s front panel "Ext 1" BNC connector.
• INTernal[1]: Arms the start trigger when the signal on channel 1 meets the
conditions specified by ARM:STARt:LEVel1.
• INTernal2: Arms the start trigger when the signal on channel 2 meets the
conditions specified by ARM:STARt:LEVel2.
• HOLD: Disable this arming source. If both sources are set to HOLD, then the
ARM:STARt:IMMediate command must be sent before measurements will
proceed.
• IMMediate: Arm the start trigger as soon as the INITiate:IMMediate command is
received. This choice is only valid for ARM:STARt:SOURce1, and requires that
ARM:STARt:SOURce2 be set to HOLD.
ARM[:STARt]:SOURce[<
n
>]
196 Command Reference ARM Subsystem