TRIGger:SOURce {IMMediate|EXTernal|BUS|INTernal}
TRIGger:SOURce?
Selects the trigger source for measurements.
It is recommended that all triggered measurements be made using an appropriate fixed
manual range. That is, turn autorange off (
SENSe:<function>:RANGe:AUTO OFF
), or set
a fixed range using the
,
, or
command.
Source
Description
IMMediate 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
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 (
), each time a TTL pulse specified by
is received. If the instrument receives an external trigger before it is
ready, it buffers one trigger.
INTernal
The INTernal source is available for the 34465A and 34470A with the DIG option only, and
provides level triggering capability. To trigger on a level on the input signal, select INTernal for the
source, and set the level and slope with the
and
commands.
Parameter
Typical Return
{IMMediate|EXTernal|BUS|INTernal}. Default: IMMe-
diate.
IMM, EXT, or BUS
Return ten sets of five DC voltage measurements, using a positive-going external trigger to start each meas-
urement set:
CONF:VOLT:DC
SAMP:COUN 5
TRIG:COUN 10
TRIG:SOUR EXT;SLOP POS
READ?
Typical Response: +1.0001, … (50 measurements)
l
On the 34460A, EXTernal requires option 34460-LAN or option 3446LANU.
l
After selecting the trigger source, you must place the instrument in the "wait-for-trigger" state by
sending
or
. A trigger is not accepted from the selected trigger source until the instru-
ment is in the "wait-for-trigger" state.
l
This parameter is set to its default value after a Factory Reset (
) or Instrument Preset
(
).
l
Recommendation: All triggered measurements should be made using an appropriate fixed manual
range. That is, turn autorange off ([SENSe:]<
function
>:RANGe:AUTO OFF) or set a fixed range using
the [SENSe:]<
function
>:RANGe,
, or
command.
l
This parameter is set to its default value after a Factory Reset (
) or Instrument Preset
(
).
Keysight True
volt
Series Operating and Service Guide
433
SCPI Programming Reference
