I 6.3.3 Relay Board; C Data Bus; Figure 6-7. Relay Board Layout - Teledyne T400 User Manual

6.3.2.7 I

C DATA BUS

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I C is a two-wire, clocked, bi-directional, digital serial I/O bus that is used widely in
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commercial and consumer electronic systems. A transceiver on the motherboard converts
data and control signals from the PC-104 bus to I
board and valve driver board circuitry.
6.3.3 R B
ELAY
By actuating various switches and relays located on the Relay Board, the CPU controls
the status of other key components. The relay board receives instructions in the form of
digital signals over the I
various switches and relays appropriately.
The most commonly used version of the Relay PCA installed in the T400 analyzer does
not include the AC relays used in instruments where there are AC powered components
requiring control. A plastic insulating safety shield covers the empty AC Relay sockets.
083730400A DCN8130
OARD
2 C bus, interprets these digital instructions and activates its

Figure 6-7. Relay Board Layout

Teledyne API – Model T400 O
C. The data are then fed to the relay
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Analyzer
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