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Remote Manual SIGLENT
SDM3055/SDM3055A 96
2.11.5 TRIGger:SOURce {IMMediate|EXTernal|BUS} TRIGger:SOURce?
Selects the trigger source for measurements:
Source Description
IMMediat
e
The trigger signal is always present. When you place the
instrument in the "wait-for-trigger" state, the trigger is issued
immediately..
BUS
The instrument is triggered by *TRG over the remote interface
once the DMM is in the "wait-for-trigger" state.
EXTernal
The instrument accepts hardware triggers applied to the
rear-panel Ext Trig input and takes the specified number of
measurements (SAMPle:COUNt), each time a TTL pulse specified
by OUTPut:TRIGger:SLOPe is received. If the instrument receives
an external trigger before it is ready, it will buffer one trigger.
Parameter Typical Return
{IMMediate|EXTernal|BUS} ，default
IMMediate IMM、EXT or BUS
Return ten sets of five DC voltage measurements, using a positive-going
external trigger to start each measurement set:
CONF:VOLT:DC
SAMP:COUN 5
TRIG:COUN 10
TRIG:SOUR EXT;SLOP POS
READ?
Typical Response: -1.85425399E-04, … ( 50 measurements)
After selecting the trigger source, you must place the instrument in the
"wait-for-trigger" state by sending INITiate or READ?. A trigger will not be accepted
from the selected trigger source until the instrument is in the "wait-for-trigger" state.
This parameter is set to its default value after a Factory Reset (*RST) or Instrument
Preset (SYSTem:PRESet).