ADLINK ND-6067 - Manual (Page 272)

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9.2 How to Calibrate the Analog Output Modules ?
What do you need to do calibration ?
1. One 5 1/2 digit multimeter.
2. A resistor 250
Ω (Accurary is 0.01 %).
3. NuDAM Aministration Utility.
Calibration Procedure
1. Select output range to 0 ~20 mA or 4~20 mA.
2. Put the resistor 250
Ω to the NuDAM-6021 (+ IOUT (Pin.1) and -IOUT
(Pin.2)).
3. Put 5 1/2 digit multimeter to measure + IOUT (Pin.1) and -IOUT
(Pin.2) .
4. Send the “Analog Data Output #(Addr)(OutData)” command with
output value is 4 mA. For example if the address is 0x03 then the
command is
#0304.000.
5. Use “Trim calibration $(Addr)3(Counts)” command to adjust until the
output value to 1 V (4 mA).
6. Send “4mA Calibration $(Addr)0” command to the analog output
module to complete the 4 mA calibration.
7. Send the “Analog Data Output #(Addr)(OutData)” command with
output value is 20 mA. For example if the address is 0x03 then the
command is
#0320.000
8. Use “Trim calibration $(Addr)3(Counts)” command to adjust until the
output value to 5 V (20 mA).
9. Send “20mA Calibration $(Addr)1” command to the analog output
module to complete the 20 mA calibration.