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ADwin-Pro II
Hardware, manual Dec. 2018
221
Calibrating a module
ADwin
ADC
For ADC use the formula:
Tolerance range
Slight variations regarding the calculated values may be within the tolerance
range of the individual component. Two kinds of variations are possible (in
LSB), which are indicated in your hardware manual.
INL
– The integral non-linearity (INL) defines the deviation from the ideal wave
form covering the whole input voltage range.
DNL
– The differential non-linearity (DNL) defines the deviation from the ideal
value of the quantization level.
6.3 Calibrating a module
Initializing the hardware
At first define the voltage rangeof the module.
Calibration has to be made when the system reaches its operating tempera-
ture. 30 minutes after power-up of the system, the operating temperature is
reached, provided the system has a (room) temperature of approx. 20…25°C
before power-up.
Please note the general information in chapter 6.1.
Call the program
A D pr o. e xe
from the Windows start menu under
"
Programs\ADwin
". The program requires
Microsoft .NET Framework
2.0
. The dialog window
Scan
opens.
Please note: The next step will stop all processes and reset all module set-
tings!
Enter the data for the
ADwin
system to be calibrated. The button
Scan
starts
a connection to the
ADwin
system and reads system information. The pro-
gram
ADpro.exe
will initlialize the
ADwin
system, i.e. it stops and deletes
running processes.
If your
ADwin
system has booted successfully, the window "
ADwin
-
ADpro
"
opens.
Digits
UIN U
–
OFF
ULSB
---------------------------------
=
UIN
Digits ULSB UOFF
+
⋅
kV
-----------------------------------------------
=