Agilent Technologies E1468A, User Manual

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Relay Matrix Switch Command Reference 63
Chapter 3
TRIGger:SOURce
TRIGger:SOURce <source>
specifies the trigger source to advance the
channel list during scanning.
Parameters
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:SOURceBUS or TRIGger:SOURceHOLD is
selected.
Using External Trigger Inputs:
With TRIGger:SOURceEXTernal selected,
only one switchbox at a time can use the external trigger input at the
El406 Trig In port. The trigger input is assigned to the first switchbox that
requested the external trigger source (with a TRIGger:SOURceEXTernal
command).
Assigning External Trigger:
A switchbox assigned with
TRIGger:SOURceEXTernal remains assigned to that source until the
switchbox trigger source is changed to BUS, ECLT, HOLD, IMMediate,
or TTLT. When the source is changed, the external trigger source is
available to the next switchbox which requests it (with a
TRIGger:SOURceEXTernal 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:SOURceBUS
selected, use the IEEE 488.2 Common command *TRG or the GPIB
Group Execute Trigger (GET) command.
Trig Out Port Shared by Switchboxes:
See the OUTPut command.
Related Commands:
ABORt, [ROUTe:]SCAN, OUTPut
*RST Condition:
TRIGger:SOURce IMMediate
Source Type Description Default
BUS discrete *TRG or GET command IMM
ECLTrgn numeric ECL Trigger bus line IMM
EXTernal discrete Trig In port IMM
HOLD discrete Hold Triggering IMM
IMMediate discrete Immediate Triggering IMM
TTLTrgn numeric TTL Trigger bus line <0 - 7> IMM