VXI EX7000 - Manual (Page 35)

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EX7000 Series Web Page Operation 35
S
ECTION
5
T
HEORY OF
O
PERATION
I NTRODUCTION
This section expands on the description of the internal operation of the EX7000 and explains how
to best use them. A full understanding of this operation is not required to operate and use the
EX7000. A functional block diagram is provided below.
F IGURE 5-1: F UNCTIONAL B LOCK D IAGRAM
S YSTEM O VERVIEW
Using the drivers provided with the EX7000, commands are issued from the host PC to the Digital
Controller Board (DCB). The DCB, in turn, controls the operation of the RDBs. Up to eight RDBs
can be controlled by one DCB, making the EX7000 capable of providing up to 576 high-current
relay control drivers, 96 very high-current drivers, and 256 parallel I/O ports. This is illustrated in
Figure 5-1.When multiple RDBs exist in an EX7000 system, a rotary switch on the RDB is used to
set a unique address for each RDB.