HP E1368A/69A/70A User Manual page 69

Comments
Example
68 HP E1368A/69A/70A Command Reference
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Enabling the Trigger Source: The
only selects the trigger source. The
enables the trigger source.
Using the Command: You can use
TRIG
advance the scan when
HOLD is selected.
Using External Trigger Inputs: With
selected, only one switchbox at a time can use the external trigger
input at the HP E1300/E1301 Mainframe's "Event In" port. The
trigger input is assigned to the first switchbox requesting the external
trigger source (with a
Assigning External Trigger: A switchbox assigned with
TRIG:SOUR EXT remains assigned to that source until it receives a
command to change the source to
the source is changed, the external trigger source is available to the
next switchbox which requests it (with a
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
command *TRG or the HP-IB Group Execute Trigger (
"Trig Out" Port Shared by Switchboxes: See the
command.
Related Commands:
*RST Condition:
Scanning Using External Triggers
This example uses external triggering (
00 through 02 of a single-module switchbox. The trigger source to advance
the scan is the input to the "Event In" port on an HP E1300A/E1301A
mainframe. When is executed, the scan is started and channel 00 is
INIT
closed. Then each trigger received at the "Event In" port advances the scan
to the next channel.
TRIG:SOUR EXT
SCAN (@100:102)
INIT
trigger externally
TRIGger:SOURce
INITiate[:IMMediate]
TRIGger[:IMMediate]
TRIGger:SOURce BUS
TRIGger:SOURce EXTernal
TRIGger:SOURce EXTernal
,
BUS HOLD
TRIGger:SOURce
selected, use the IEEE 488.2 common
,
[ROUTe:]SCAN TRIGger
TRIGger:SOURce IMMediate
TRIG:SOUR EXT
Sets trigger source to external.
Scan channels 00 through 02.
Begin scan, close channel 00.
Advance scan to next channel.
command
command
to
or TRIGger:SOURce
command).
, or . When
IMMediate
GET ).
OUTPut
,
ABORt
) to scan channels
Chapter 4