Moog Focal 903, User Manual, Page: 39 / 96

903-0628-00 Rev. 1 Model 903-HD User's Guide – FMB-X-2.5
Focal Technologies Corp. Page 4-6
4.1.3 Data Input/Output Module (I/O-Box)
Card P/N 903-6716-01 (I/O-Box B)
Card P/N 903-6716-03 (I/O-Box A)
The high density remote module uses a compact input/output box (I/O-Box) on the bottom of the rack to
provide access connectors, signal protection, and signal activity LED indicators for the data channels on the
HDB-TX boards.
The figure below shows a front view of the data I/O box for the 12 HP (4VID) and 16 HP (8VID) systems. Note
that each column of connectors on the I/O-Box maps to a column of connectors on an AIB-4 card installed in
the console module. Also note that the columns marked “RS-232” have four WAGO headers for the dedicated
RS-232 channels on the corresponding HDB-TX card. The columns marked “AIB” have four WAGO headers
for the AIB plug-in modules installed on the corresponding HDB-TX card. Refer to section 2.2.3 of this
document for more details on the channel mapping and AIB plug-in modules used for the 4VID and 8VID
systems.
All channels have signal activity LEDs indicating data transfer. Red LEDs, under letter “R”, are on when data
is being received into the Model 903, while green LEDs, under letter “T”, are on when data is being
transmitted from the multiplexer. LEDs are active low and are driven by the backplane signals.
12 HP I/O BOX
HDB-TX-B
TR TR
AIB RS-232
FOCAL
1
2
3
4
5
6
7
8
HDB-TX-B
TR TR
AIB RS-232
FOCAL
1
2
3
4
5
6
7
8
HDB-TX-A
TR TR
AIB RS-232
FOCAL
1
2
3
4
5
6
7
8
16 HP I/O BOX
Figure 4-4: I/O Interface Box for 12 HP and 16 HP High Density Remote Systems