National Instruments 6110, Calibration Procedure

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NI 6110/6111/6115/6120 Calibration Procedure 10 ni.com
8. Call
DAQ_VScale
to convert the buffer of acquired binary values into
voltage values. Set the following parameters:
• deviceNumber —The value obtained from MAX
• chan —The channel currently being verified
• gain —The value specified by the appropriate analog input value
table
• gainAdjust —
1
• offset —
0
• count —
1,000
• binArray —Binary data returned from DAQ-OP
• voltArray —Double precision array of voltage values
9. Average the 1,000 voltage values. Compare the resulting average to
the upper and lower limits listed in the appropriate table. If the result
is between these values, the device has passed this test.
10. Repeat steps 4–9 to verify all values.
11. Make the appropriate connections to verify the next channel by
repeating steps 2 and 3, and proceed from step 4.
You have completed verifying the analog input levels on the device.
Verifying Analog Output
This procedure verifies the performance of the analog output. Check
measurements using the following procedure:
1. Read the Equipment and Other Test Requirements section.
Note The NI 6110/6111/6115/6120 has two analog outputs: DAC0OUT and DAC1OUT.
This test verifies the performance of both analog output channels.
2. Connect the DMM to DAC0OUT as shown in Table 4.
3. Refer to the analog output value tables in the NI 6110/6111/6115/6120
Specifications section. These tables show acceptable settings for the
device.
Table 4. Connections to Analog Outputs
Analog Output DMM Positive Input DMM Negative Input
DAC0OUT DAC0OUT (pin 22) AOGND (pin 54)
DAC1OUT DAC1OUT (pin 21) AOGND (pin 55)