National Instruments NI 9219, Процедура калибровки

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NI 9219 Calibration Procedure | © National Instruments Corporation | 7
c. Start the task.
d. Acquire 20 voltage readings with the NI 9219 and average the readings.
e. Record the average of the readings as V
channel
.
f. Clear the task.
7. Perform the following calculation using the recorded V
ref
and V
channel
values.
8. Compare the calculation result to the Upper Limit and Lower Limit values in Table 4.
Table 3. NI 9219 Timing Configuration
ADC Timing Mode Sample Timing Type
High Resolution On Demand
Table 4.
NI 9219 Verification Test Limits for Voltage Accuracy
Range Test Point 1 – Year Limits
Minimum
(V)
Maximum
(V) Location
Value
(V)
Lower
Limit (V)
Upper
Limit (V)
–60 60 Max 48 –0.07990 0.07990
Mid 0.0 –0.00100 0.00100
Min –48 –0.07990 0.07990
–15 15 Max 12 –0.02030 0.02030
Mid 0.0 –0.00080 0.00080
Min –12 –0.02030 0.02030
–4 4 Max 3.2 –0.00580 0.00580
Mid 0.0 –0.00060 0.00060
Min –3.2 –0.00580 0.00580
–1 1 Max 0.80 –0.000450 0.000450
Mid 0.00 –0.000014 0.000014
Min –0.80 –0.000450 0.000450
–0.125 0.125 Max 0.10 –0.000063 0.000063
Mid 0.00 –0.000010 0.000010
Min –0.10 –0.000063 0.000063
Accuracy
=
V
channel
–
V
ref