Measurement Computing WBK40 - Manual

WBK40 and WBK41
Thermocouple & Multi-Function I/O Modules
For use with WaveBook/516E and WBK25
WBK40
14 Channel Thermocouple Input Module,
Front & Rear Views
Overview ….. 1
What are WBK40 and WBK41? …… 1
Front Panel Connectors …… 2
Rear Panel Connectors ….. 4
Setup …… 5
Hardware Setup …… 5
Software Setup …… 14
Operational Aspects ...... 14
Block Diagrams …… 14
Thermocouple Measurements …… 15
Digital I/O, WBK41 Only …… 16
Synchronous Input Operations …… 16
Output Channel Configuration …… 17
Asynchronous I/O Operations …… 18
Analog Outputs, WBK41 Only (DBK46 Required) …… 19
Using a Temperature Calibrator …… 20
CE Compliance …… 21
Fuse Replacement …… 23
P1 - DB37 Connector Pinout …… 26
P2 – DB37 Connector Pinout (WBK41 Only) …… 27
Specifications …… 28
WBK40 & WBK41 Installation Guide
(p/n 1066-0901)
WBK41
Multi-Function Thermocouple I/O Module,
Front & Rear Views
Overview
What are WBK40 and WBK41?
The WBK40 is a 14-Channel Thermocouple Input Module. The WBK41 is a Multi-Functional I/O Module. The
latter includes the thermocouple functionality of the WBK40 and additional features, as will be discussed shortly.
Both the WBK40 and WBK41 attach to any one of the three DB25 parallel expansion ports on a WaveBook/516E
or WBK25. Because the modules each have a built-in 16 bit, 200-kHz A/D converter, measurements do not
consume valuable sampling time from the host WaveBook’s 1-MHz A/D converter. For this reason, there are no
speed implications to WaveBook [or other WBK] measurements when a WBK40 or a WBK41 is attached.
Measurements can be made synchronous with the WaveBook/516E, providing precise time correlation between
readings from both measurement devices.
Features common to WBK40 and WBK41
• Provides a means of adding from 14 to 224 thermocouple inputs to the WaveBook/516E or WBK25
• Provides linearized and cold-junction compensated readings for all thermocouple types
• Exhibits 1.0°C [or better] accuracy for most ranges and TC types
• Consumes no measurement bandwidth from the WaveBook/516E
• Detects open thermocouples
Additional features of the WBK41
16 Digital I/O Lines (via front panel screw-terminal blocks) •
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24 Digital I/O Lines (via a rear panel 37-pin connector, P2)
4 Counter Inputs (via front panel screw-terminal blocks)
2 Timer Outputs (via front panel screw-terminal blocks)
4 Channel, 16-bit, 100 kHz Analog Output (via front panel screw-terminal
blocks; but only when a factory-installed DBK46 option is in place)
Thermocouple & Multifunctional Modules 926896 WBK40 & WBK41, pg. 1