Advantech RS-485 user manual Analog I/O Modules Calibration, Analog input module calibration

I/O Modules

4.5Analog I/O Modules Calibration

Analog input/output modules are calibrated when you receive them. However, calibration is sometimes required. No screwdriver is neces- sary because calibration is done in software with calibration parame- ters stored in the ADAM-5000 analog I/O module's onboard EEPROM.

The ADAM-5510/P31 system comes with the ADAM utility software that supports calibration of analog input and analog output. Besides the calibration that is carried out using the utility software, the modules incorporate automatic Zero Calibration and automatic Span Calibration at bootup or reset.

Analog input module calibration

Modules: ADAM-5017, 5017H, 5018

1.Apply power to the ADAM-5510/P31 system that the analog input module is plugged into and let it warm up for about 30 minutes

2.Assure that the module is correctly installed and is properly configured for the input range you want to calibrate. You can do this by using the ADAM utility software. (Refer to Chapter 5)

3.Use a precision voltage source to apply a span calibration voltage to the module's V0+ and V0- terminals. (See Tables 4-8 and 4-9 for reference voltages for each range.)

1

V0+

V0-

V1+

V1-	Voltage
	Source

Figure 4-14: Applying calibration voltage

4-18 ADAM-5000