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im Vertrieb von
Installation and Operation, cont'd
J7
H Sync
J6
V Sync
J20 Enable
Sync
1
J11
2
3
1
J28
J23
RS-232
Connector
Figure 2-2 — Jumper locations
Sync polarity jumpers
The interface is factory configured for the output sync to follow
the input sync. To force positive or negative sync, reconfigure
the jumper as follows:
Locate jumper blocks J6, J7, and J20 on the printed circuit
1.
board.
2.
For sync follow (output sync polarity identical to the
input sync), ensure that the jumper is removed from
jumper block J20.
3.
For positive or negative sync, ensure that a jumper is
installed in jumper block J20 and configure J6 and J7 as
follows:
a.
Vertical sync —
For positive sync, ensure that a jumper is installed in
jumper block J6.
For negative sync, ensure that the jumper is removed
from jumper block J6.
b.
Horizontal sync —
For positive sync, ensure that a jumper is installed in
jumper block J7.
For negative sync, ensure that the jumper is removed
from jumper block J7.
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2-4
RGB 203 Rxi, RGB 203 Rxi VTG • Installation and Operation
1
J27
CAMBOARD Electronics
Video clamping jumper
VTG timeout (RGB 203 Rxi VTG only)
Mounting the Interface
Tabletop placement
Under-desk mounting
Tel. 07131 911201
RGB 203 Rxi, RGB 203 Rxi VTG • Installation and Operation
Fax 07131 911203
The interface is factory configured to clamp the sync timing to
the back porch. To clamp the sync timing to the tip of the sync
pulse, reconfigure the jumper as follows:
1.
Locate J11 on the printed circuit board.
2.
For sync timing clamped to the back porch, ensure that a
jumper is in place from pin 1 to pin 2.
3.
For sync timing clamped to the sync tip, ensure that a
jumper is in place from pin 2 to pin 3.
The built-in mini VTG is factory configured to output the
selected test pattern for 5 minutes. After the VTG times out, the
screen dims, but is still visible. The output remains dim until
you operate any of the front panel controls, resetting the timer
and outputting the VTG test pattern at full intensity.
Disable the VTG timer, causing the mini VTG to continuously
output the selected test pattern at full intensity until you turn
off the VTG portion of the interface as follows:
Locate DIP switch J27 on the printed circuit board.
1.
2.
Remove the jumper from J27.
Select an installation option: tabletop placement, or under-desk,
through-desk or rack mounting. Follow the appropriate
procedure on the next three pages.
For tabletop or desktop placement only, install the self-adhesive
rubber feet/pads (provided) onto the four corners of the bottom
of the interface enclosure.
1.
Secure the optional under-desk mounting brackets
(part #70-077-01) to the interface with the six machine
screws provided in the mounting kit (figure 2-3).
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2-5
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