6703/6704 Calibration Procedure
12
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2.
Run
Set_DAQ_Device_Info
with
infoType
set to
ND_CALIBRATION_ENABLE
and
infoValue
set to
ND_NO
. This
configures the board so it is no longer possible to access the calibration
channels.
3.
If the calibration is being performed by a metrology laboratory or
another facility that maintains traceable standards, call the
Copy_Cal
function in the
ni6704Cal
.
dll
. Calling this function copies the
calibration values to the factory calibration area and updates the
calibration date to match the system clock of the calibration computer.
The board is now calibrated. You can verify the analog input and output
operation by repeating the
Verifying Your Board’s Operation
section.
Specifications
The following tables are the specifications you should use when calibrating
and verifying the 6703/6704. The tables show the specifications for 1-year
and 24-hour calibration intervals.
Using the Tables
The following definitions describe how to use the specification tables in
this section.
Test Point
The
Test Point
is the voltage value that is input or output for verification
purposes.
24-Hour Ranges
The
24-Hour Range
column contains the
Upper Limits
and
Lower Limits
for the test point value. If the board has been calibrated in the last 24 hours,
the test point value should fall between the upper and lower limit values.
These limit values are expressed in volts or milliAmps.
1-Year Ranges
The
1-Year Range
column contains the
Upper Limits
and
Lower Limits
for
the test point value. If the board has been calibrated in the last year, the test
point value should fall between the upper and lower limit values. These
limits are expressed in volts milliAmps.
