68 PCL-818L User's Manual
Regular calibration checks are important to maintain accuracy in data
acquisition and control applications. We provide a calibration pro-
gram, CALB.EXE, on the PCL-818L software disk to assist you in this
task.
The minimum equipment required to perform a satisfactory calibration
is a 4½-digit digital multimeter and a voltage calibrator or a stable,
noise free D. C. voltage source. You may also want a card extender,
such as the Advantech PCL-757 ISA-Bus Switch/Extension Card. The
PCL-757 transparently extends the PC-bus connector to the top of the
chassis, giving safe and easy access to the PCL-818L during calibra-
tion or other tasks.
The CALB.EXE makes calibration easy. It leads you through the
calibration and setup procedure with a variety of prompts and graphic
displays, showing you all of the correct settings and adjustments. The
explanatory material in this section is brief, intended for use in
conjunction with the calibration program.
VR assignment
The five variable resistors (VRs) on the PCL-818L board help you
make accurate adjustments on all A/D and D/A channels. See the
figure in Appendix B for help finding the VRs. The following list
shows the function of each VR:
VR
Function
VR1
A/D full scale adjustment
VR2
A/D bipolar offset
VR3
D/A full scale adjustment
VR4
D/A offset adjustment
VR5
Programmable gain amplifier offset
Содержание PCL-818L
Страница 1: ...PCL 818L High performance DAS card with programmable gain ...
Страница 5: ...Chapter 1 General information 1 1 General information C H A P T E R ...
Страница 13: ...Chapter 2 Installation 9 C H A P T E R 2 Installation ...
Страница 25: ...Chapter 3 Signal connections 21 3 Signal connections C H A P T E R ...
Страница 31: ...Chapter 4 Register structure and format 27 4 Register structure and format C H A P T E R ...
Страница 41: ...Chapter 5 A D conversion 37 C H A P T E R 5 A D conversion ...
Страница 47: ...Chapter 6 D A conversion 43 6 D A conversion C H A P T E R ...
Страница 50: ...46 PCL 818L User s Manual ...
Страница 51: ...Chapter 7 Digital input and output 47 7 Digital input and output C H A P T E R ...
Страница 53: ...Chapter 8 Programmable counter timer 49 8 Programmable timer counter C H A P T E R ...
Страница 61: ...Chapter 9 Direct memory access operation 57 9 Direct memory access operation C H A P T E R ...
Страница 64: ...60 PCL 818L User s Manual ...
Страница 65: ......
Страница 66: ...Appendix B Connector Switch and VR Locations 63 B Connector switch and VR Locations A P P E N D I X ...
Страница 68: ...Appendix C PC I O port address map 65 C PC I O port address map A P P E N D I X ...
Страница 70: ...Appendix D Calibration 67 D Calibration A P P E N D I X ...
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Страница 75: ...2 PCL 818L User s Manual ...