Keithley 2701 - Page 66

1-42 Getting Started Model 2701 User’s Manual
Exercise 6 — 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 6 in
Figure 1-10 provides a command sequence to return a single reading while in the continu-
ous trigger state.
Figure 1-10
Exercise 6 — Return a single reading (continuous triggering)
SAMP:COUN 1
INIT:CONT ON
DATA?
DATA:FRESh?
FETCh?
CALC:DATA?
Place 2701 in continuous
trigger state
OR
OR
Return basic reading
2, 3
Return result of MATH
calculation
1, 2
1. If a MATH function (mX+B, percent, or 1/X) 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 lastest 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).
Return readings
Trigger configuration