SBOU087A Datasheet, PDF (4/35 Pages) Texas Instruments – Multi-Cal-System Evaluation Module

Overview
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Figure 2 shows the Multi-Cal-Slave kit. Each Multi-Cal-Slave kit enables you to expand the system by
eight channels. For example, a Multi-Cal-Master kit and one Multi-Cal-Slave kit combine to form a
16-channel system. Seven Multi-Cal-Slave boards and a single Multi-Cal-Master combine to form a
64-channel system.
Slave Ribbon Cable
Multi-Cal-Slave PCA
Figure 2. Multi-Cal-Slave Kit
The Multi-Cal-Slave kit contains these items:
• Multi-Cal-Slave PCB: The slave board adds eight measurement channels to the system. The slave
board is almost identical to the master board. The primary difference between the master and the slave
is that the master connects to the USB DAQ Platform and the slave connects to the master via a
ribbon cable, as shown in Figure 2.
• Slave Ribbon cable: The Slave Ribbon cable connects all the signals and power from the master to
the slave. Note that power is distributed across several wires to minimize loss.
Figure 3 shows the Multi-Cal-Interface PCA card. The Multi-Cal-Interface can be used to connect the
sensor modules to the system. The Multi-Cal-Test boards can also be connected to this board. The
Multi-Cal-Interface board connects to the master or slave via the Multi-Cal-Interface cable on the 37-pin
DSUB connectors.
Terminal block
for connection to
sensor module
DSUB9 connection to
Multi-Cal-Test EVM
Multi-Cal-Interface PCA
Figure 3. Multi-Cal-Interface PCA Card
DSUB37 connection to
Multi-Cal-Master or
Multi-Cal-Slave
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Multi-Cal-System Evaluation Module
SBOU087A – August 2010 – Revised April 2011
Copyright © 2010–2011, Texas Instruments Incorporated
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