Agilent Technologies N6705 User Manual page 166

6 Advanced Source and Measurement Functions
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To specify the voltage or current trigger level and slope of output 3:
TRIG:ACQ:CURR 10,(@3)
TRIG:ACQ:CURR:SLOP POS,(@3)
TRIG:ACQ:VOLT 10,(@3)
TRIG:ACQ:VOLT:SLOP POS,(@3)
A non-programmable hysteresis for level triggers reduces false triggering on
slow signals. The hysteresis is set to 0.0005 X maximum range value. For
example, on the 50 V range, the hysteresis is approximately 25 mV.
Initiate the Measurement
When the DC Power Analyzer is turned on, the trigger system is in
the Idle state. In this state, the trigger system is disabled, ignoring all
triggers. The INITiate command enables the measurement system to
receive triggers. To initiate the trigger system for all four outputs:
INIT:ACQ (@1:4)
It takes a few milliseconds for the instrument to be ready to receive a
trigger signal after receiving the INIT:ACQ command, and it can take
longer for Agilent Models N678xA SMU.
If a trigger occurs before the trigger system is ready for it, the trigger
will be ignored. You can test the WTG_meas bit in the operation
status register to know when the instrument is ready to receive a
trigger after being initiated. To query the WTG_meas bit (bit 3):
STAT:OPER:COND? (@1)
If a bit value of 8 is returned in the query, the WTG_meas bit is true,
and the instrument is ready to receive the trigger signal. Refer to the
N6705 Programmer's Reference Help file for more information.
It will be necessary to initiate the measurement trigger system each time a
NOTE
triggered measurement is desired.
Trigger the Measurement
The trigger system is waiting for a trigger signal in the initiated state.
You can immediately trigger the measurement as follows:
TRIG:ACQ (@1)
Alternately, if the trigger source is BUS, you can also program *TRG
or <GET> command.
As previously discussed, a trigger can also be generated by another
output channel or an input pin on the digital port connector. If any of
these systems are configured as the trigger source, the instrument
will wait indefinitely for the trigger signal. If the trigger does not
occur, you must abort the measurement.
To abort the measurement and return the trigger system to the Idle
state:
ABOR:ACQ (@1)
Model N6705 User's Guide