Chapter 4 Remote Interface Reference
Triggering Commands
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• To ensure sy nchronization when the bus source is selected, send the
*WAI
(wait) command. When the
*WAI
command is executed, the power supply
waits for all pending operations to complete before executing any additional
commands. For example, the following command string guarantees that the
first trigger is accepted and is executed before the second trigger is
recognized.
TRIG:SOUR BUS;*TRG;*WAI;*TRG;*WAI
• You can use the
*OPC?
(operation complete query) command or the
*OPC
(operation complete) command to signal when the operation is complete.
The
*OPC?
comm and returns ‘‘1’’ to the output buffer when the operation
is c o mplete. Th e
*OPC
command sets the ‘‘OPC’’ bit (bit 0) in the Standard
Event register when the operation is com plete.
Immediate Triggering
• To select the immediate trigger source, send the following command.
TRIG:SOUR IMM
• When the
IMMediate
is selected as a trigger source, an
INITiate
command im m ed iately transfers the
VOLT:TRIG
or
CURR:TRIG
value to
VOLT
or
CURR
value. Any d elay is ignored.