Chapter 5
– 29 –
PCI-1711/1731 User’s Manual
Advantech Co., Ltd.
www.advantech.com
5. Calibration
This chapter offers you a brief guide to the calibration programs.
Regular calibration checks are important to maintain accuracy in data
acquisition and control applications. Three calibration programs are
included on the companion CD-ROM :
ADCAL.EXE A/D calibration program
DACAL.EXE D/A calibration program (Only for PCI-1711)
SELFCAL.EXE A/D self-calibration program (Only for PCI-1711)
Those calibration programs are designed only for DOS environment.
You can access these programs by the default installation path:
C:\Program Files\Advantech\Adsapi\Utility\PCI1711
Note:
✎
If you installed the program to another directory, you can find these
programs in the corresponding subfolders in your destination directory.
These calibration programs make calibration an easy job. With a
variety of prompts and graphic displays, these programs will lead you
through the calibration and setup procedures, showing you all the
correct settings and adjustments.
To perform a satisfactory calibration, you will need a 4½-digit digital
multi-meter and a voltage calibrator or a stable, noise-free D. C. voltage
source.
5.1 VR Assignment
There are four variable resistors (VRs) on the PCI-1711 card and two
variable resistors (VRs) on the PCI-1731 card. These variable resistors
are to facilitate accurate adjustments for all A/D and D/A channels.
Please refer to the following two figures for the VR positions.
Fig. 5-1 PCI-1711 VR assignment
Chapter
5
V R3 V R4
V R1 V R2
