SETUP
Central Processing Module - Video Type Selection
A DIP switch, labeled S2, on the AD1661B and AD1663B
Central Processing Module PCB is factory set for the type of
video signal. Switch position 7 of S2 is set to OFF for NTSC
video and ON for PAL video.
Video Input Module
The AD1611 and AD1609CM Video Input Modules are
configured at the factory and have no user switch settings.
Video Output Module - Display Control
The AD1626 Video Output Module (VOM) has three controls
for each monitor display output: brightness, vertical position
and horizontal position (see Figure 1-1, below). These are at
the front of the AD1626 PCB and are adjusted with the module
plugged into the bay, the front panel of the bay removed, and
power applied to the bay. The top three controls are for the
even-numbered monitor (2, 4, etc.), and the bottom three
controls are for the odd-numbered monitor (1, 3, etc.). The
function of each control is marked on the board.
To adjust the vertical or horizontal position of a monitor
display, set the test switch, labeled S2, to the TEST position
(forward). This switch is located under U37 on the board.
Using a screwdriver, turn the potentiometers to the desired
placement of the display. To lock these positions, return the
test switch back to the NORM position. The brightness control
can be set at any time.
Video Output Module - Monitor Selection
The AD1626 VOMs are properly configured at the factory. In
the event a module setup must be changed, the module must be
configured before installation and connection of video outputs.
This is done with the AD1626 VOM removed from the bay.
Eight 2-pin jumpers and one 8-position DIP switch are
provided, on the module PCB, to configure the AD1626 VOM
monitor selection (see Figure 1-1).
Set (insert) two jumpers plugs, only, to select two monitors
to be used for this VOM: 1 and 2, 3 and 4, 5 and 6, or 7 and
8. The jumpers are near the back of the AD1626 module
PCB (end with gold edge connectors). The PCB labeling
indicates the jumper positions for each monitor, ordered as:
1, 3, 5, 7, 2, 4, 6, and 8.
Set the module PCB DIP switch to the same monitor pair as
selected in the jumpers. The DIP switch is located near the
front edge of the PCB, behind the display controls. The DIP
switch positions for each monitor are shown in the table
below. Only two switches positions are set to “ON” to
identify the monitors selected for this VOM.
Monitor
Jumper Position
DIP Switch Position
1 and/or 9
1
1
2 and/or 10
2
5
3 and/or 11
3
2
4 and/or 12
4
6
5 and/or 13
5
3
6 and/or 14
6
7
7 and/or 15
7
4
8 and/or 16
8
8
Note: The DIP switch position labels
do not indicate the
selected monitor. For example, for monitors 1 and 2, the
jumpers are set to 1 and 2, and the DIP switch position 1
and position 5 are set to “ON”.
SETUP
AD1650B
1-2
U47
U46
U43
1
3
5
7
2
4
6
8
TEST
NORM
HORIZ
VERT
BRIGHT
HORIZ
VERT
BRIGHT
12
34
5678
OFF ON
EVEN
MONITOR
ODD
MONITOR
U37
S2
Figure 1-1 - AD1626 Video Output Module PCB Layout
CAUTION - Due to the presence of non-
insulated components with hazardous
voltages, the following internal adjustments
should be performed by qualified service
personnel only.
!
