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1-38
Exercise 7 — Return a single reading (continuous triggering)
Readings can be returned while the instrument is in the continuous measurement (trigger)
mode. Each time a read command is sent, the latest reading is returned. Exercise 7 in
Figure 1-9
trigger state.
Figure 1-9
Exercise 7 — Return a single reading (continuous triggering)
Return Readings
1. If a MATH function is enabled, the result of the calculation will be returned.
If there is no MATH function enabled, FETCh? and CALC:DATA? will return
the basic reading. MATH functions are covered in Section 5.
2. None of these read commands trigger measurements. They simply return the latest
reading. If FETCh?, CALC:DATA?, or DATA? is again sent before a new reading is
triggered, the old reading will be returned.
3. DATA:FRESh? can only be used once to return the same reading. Sending it again before
a new reading is triggered will cause error -230 (data corrupt or stale).
provides a command sequence to return a single reading while in the continuous
Trigger Configuration
FETCh?
OR
CALC:DATA?
Return result of MATH
calculation
Model 2790 SourceMeter
SAMP:COUN 1
INIT:CONT ON
DATA:FRESh?
Return Basic Reading
1, 2
®
Switch System Reference Manual
Place 2790 in
continuous
trigger state.
DATA?
OR
2,3
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