Scanivalve ZOC 33/64Px, Инструкция по эксплуатации и обслуживанию

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ZOC33
Section 4: Electronic Components
Decoder Board
The decoder board is the main circuit board in the ZOC33.
All of the sensor packs and the amplifier plug into this
board. The decoder board receives the inputs from the
data system and converts them into signals to drive the
sensor packs.
Address lines A0 through A5 are routed from the I/O con -
nector to two 4042 latches which convert the address input
to a 3 bit channel address and a one of eight enable. A
channel in the module is selected by the following:
The data system outputs an address for a channel to be
read. The address is sensed by the decoder board and
converted to an address and enable output. The enable
line selects the sensor pack and the address line selects
the channel in that pack. The signal output of that sensor
is then input to the amplifier board, amplified and routed
back through the decoder board to the I/O connector.
Figure 4.4 - ZOC33 Decoder Board Schematic