Measurement Computing ZonicBook 618E rev.3.4 - Manual (Page 86)

Channel Expansion using WBK18 Modules
This section is concerned with how to connect up to six WBK18 modules to a ZonicBook/618E and how to
power the units.
Reference Note:
WBK module functions and specifications are discussed in the WBK Option Cards and
Modules User’s Manual, p/n 489-0902. A PDF version of the document is included on your
data acquisition CD.
WBK18
8-Channel, Dynamic Signal Conditioning Module with
Transducer Electronic Data Sheet support (TEDS).
Setup examples follow shortly.
Power requirements can vary greatly from one system to another, and will need to be calculated on a
system by system basis, before power is applied to the system. This chapter includes instructions for
calculating power requirements.
Before discussing how to calculate power, we will look at the use of connectors and the types of cables
used.
Connectors and Cables
To attach a WBK18 module, connections must be made for power, expansion control, and expansion
signals. The relevant connectors [located on the WBK18 modules] are as follows:
• POWER IN [DIN5] connects to a 10 to 30 VDC source. When in a power daisy-chain,
POWER IN connects to the previous WaveBook or WBK module’s POWER OUT.
• POWER OUT [DIN5] can be connected to the next module’s POWER IN, providing the
5 amp current limit will not be exceeded. It may be necessary to use a supplemental power
supply. Power requirements and discussed in the following pages.
• EXPANSION CONTROL OUT [HD15] connects to the next module’s EXPANSION CONTROL
IN.
• EXPANSION SIGNAL IN [BNC] connects to the next module’s EXPANSION SIGNAL OUT.
The relevant connectors located on the ZonicBook/618E are:
• ETHERNET connects to a PC’s 10/100BaseT Ethernet port, or to a 10/100BaseT Ethernet
network.
• EXPANSION CONTROL [HD15] provides a means of connecting up to six WBK18 modules,
via the daisy-chain method.
• EXPANSION SIGNAL IN [BNC] connects to a WBK18’s EXPANSION SIGNAL OUT.
Prior to connecting your devices to power, calculate your system’s power requirements as
discussed in upcoming section of this chapter. Note that examples of system setups follow
shortly.
CE Compliance
If your system needs to be CE Compliant, refer to the Declaration of Conformity for each system
component. Also, refer to Chapter 10, CE Compliance and Noise Considerations.
11-2 System Expansion 929795 ZonicBook/618E User’s Manual