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903-0623-00 Rev. A
5.6
AIB-4 - Adaptable Interface Board
Card P/N 903-5003-00
The Adaptable (or Analog) Interface Board (AIB-4) provides four generic channels of data with four
sockets that may be populated with any mixture of available plug-in modules. These include analog
interfaces for hydrophones, sonars (MS900), and sensors, in addition to digital interfaces, such as
RS-232, RS-485/422/TTL, and Tritech sonar ARCNET. Figure 5.6-1 below shows the location of pin 1 on
the WAGO connectors when viewed from the front panel. Channel 1 is at the top of the column of
connectors, as marked by the black dot along the left-hand side of the panel.
LED indicators display presence of data on the transmit and receive line for each channel. In general, the
green LEDs under the "T" column are on when data is transmitted from the front panel of the AIB card.
The red LEDs under the "R" column are on when data is being received into the AIB front panel from an
external source. For serial data interfaces, LEDs are on when the corresponding line is in a "space" state
(TTL = low) and off when the line is in a "mark" state (TTL = high). Idle lines are typically in the "mark"
state. If an AIB socket is not populated, both LEDs will be on.
During unidirectional data transfer, an active red LED at one end of the system should be matched by an
active green LED at the other end of the system. For example, what is received at the remote module
should be transmitted by the console module.
Figure 5.6-1: Adaptable Interface Board (AIB-4) Front Panel
Focal Technologies Corp.
Model 903 User's Guide, FMB-X-2.5 Version
Page 5-22
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