Verifying Timebase Frequency Accuracy - National Instruments 446 Series Calibration Procedure

NI-DAQmx Function Call
Call
DAQmxStopTask
parameters:
taskHandle:
myTaskHandle
NI-DAQmx Function Call
Call
DAQmxClearTask
parameters:
taskHandle:
myTaskHandle
NI 446X Calibration Procedure
12. Stop the task using the following function.
with the following
13. Clear the task using the following function.
with the following
14. Repeat steps 3 through 13 for all remaining gain values used in step 6.
Also modify the device output amplitude used in step 3. For all values,
refer to Table 5.
15. Repeat steps 1 through 14 for analog output channel 1 of the device.
Replace with
ao0
physicalChannel

Verifying Timebase Frequency Accuracy

This section describes the verification process for the timebase frequency
accuracy on all the NI 446X devices. All analog inputs use a single circuit
on each device. The NI 4461 analog output channels also use the same
timebase frequency circuit. Therefore, you need to verify only the analog
input frequency accuracy on a single channel to verify this circuit accuracy.
Complete the following steps to verify the timebase:
1. Connect the function generator to the analog input channel 0 of the
device.
2. Output a sine wave using the function generator. The sine wave should
have an amplitude of 9 V
10,000.00 Hz.
LabVIEW Block Diagram
LabVIEW Block Diagram
in the function call parameters
ao1
and .
channel
with no DC offset and a frequency of
p-p
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