Filter
Top Products
E1442A Command Reference 81Chapter 3
Likewise, other drivers may consume trigger resources which may deny
access to a particular trigger by the SWITCH driver. You should always
release custody of trigger sources after completion of an activity by
setting the trigger source to BUS or HOLD (TRIG:SOUR BUS | HOLD).
Using Bus Triggers: To trigger the switchbox with TRIGger:SOURce BUS
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: [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 E1406
Command Module Trig In port.
75,*6285(;7
Sets trigger source to external
6&$1#
Sets channel list
,1,7
Starts scanning cycle
WULJJHUH[WHUQDOO\
Advances channel list to next
channel
Example Scanning Using Bus Triggers
75,*6285%86
Sets trigger source to bus
6&$1#
Sets channel list
,1,7
Starts scanning cycle
75*
Advances channel list to next
channel
TRIGger:SOURce?
TRIGger:SOURce? returns the current trigger source for the switchbox.
Command returns either BUS, EXT, HOLD, TTLT0-7, ECLT0-1 or IMM
for trigger sources BUS, EXTernal, HOLD, TTL Trigger, ECL Trigger,
ECL Trigger or IMMediate, respectively.
Example Query Trigger Source
75,*6285(;7
Sets trigger source to external
75,*6285"
Queries trigger source; returns
EXT.