User`s manual

• Using External Trigger Inputs: With TRIGger:SOURce EXTernal
selected, only one switchbox at a time can use the external trigger
input at the Agilent E1300/E1301 Mainframe "Event In" BNC port.
The trigger input is assigned to the first switchbox that requested the
external trigger source.
• Assigning External Trigger: A switchbox assigned with
TRIGger:SOURce EXTernal remains assigned at that source until it
receives a command to change the source to BUS, HOLD, or
IMMediate. When the source is changed, the external trigger source
is available to another switchbox (with a TRIGger:SOURce
EXTernal command). Another switchbox cannot receive an external
trigger source if the source is already assigned, or an error is
generated.
• Using Bus Triggers: To trigger the switchbox with
TRIGger:SOURce BUS selected, use the IEEE 488.2 *TRG
command or the GPIB Group Execute Trigger (GET) command.
• "Trig Out" Port Shared by Switchboxes: See OUTPut command.
• Related Commands: [ROUTe:]SCAN, TRIGger, ABORt.
• *RST Condition: TRIGger:SOURce IMMediate.
Example Scanning Using External Triggers
In the following example, the trigger input is applied to the Agilent
E1300/E1301 Mainframe "Event In" BNC port.
TRIG:SOUR EXT Sets trigger source to external
SCAN (@100:147) Sets channel list
INIT Starts scanning cycle
trigger externally Advances channel list to next
channel
Scanning Using Bus Triggers
TRIG:SOUR BUS Sets trigger source to external
SCAN (@100:147) Sets channel list
INIT Starts scanning cycle
*TRG Advances channel list to next
channel
:SOURce? TRIGger:SOURce? returns the current trigger source for the switchbox.
Command returns either BUS, EXT, HOLD, or IMM for trigger sources
BUS, EXTernal, HOLD, or IMMediate, respectively.
Example Query Trigger Source
TRIG:SOUR EXT Sets trigger source to external
TRIG:SOUR? Query trigger source; returns EXT
58 Agilent E1346A Multiplexer Command Reference Chapter 5