User`s guide

Clarity Visual Systems
October 1998
12
fastener.
into each leg of the unit above.
Tighten a nut on this bolt to lock the units together. See
Figure 1 above.
6. Continue with
subsequent rows of
VideoWalls
Lock each VideoWall to the adjacent VideoWalls after the
row above it (if any) has been installed.
7. For added stability…
Use the rear-tapped holes in the legs of the upper units to
fasten to a solid support, such as a structural wall.
The threaded inserts in each leg are female 5/16-18 UNC.
8. Check
Check that all VideoWalls in the video wall are locked
together.
9. Reinstall screens
Reinstall each VideoWall’s screen.
Cables
Video connections from the signal source to the WN-5220-V
VideoWall depend on the type of signal supplied by the source. The
compatible video inputs are; 640x480 VGA, Mac II and 31.5 kHz
RGBS Video. With the optional VIM line-Doubler/Scaler card 15.75
kHz RGBS Video is recognized and with the optional VIM decoder
card Composite Video and S-Video will be processed and displayed.
The Loop-thru video output uses a standard 15 pin VGA type
connector for output to an external computer monitor or another
VideoWall. The format of the Loop-thru video is same as the source
video. VGA and MAC II will have RGB with separate H-Sync and V-
Sync. RGBS video will come out RGBS with the composite sync on
the connector’s H-Sync pin. RGB Sync on Green sources will loop-
thru RGBS-Sync on Green. VideoWall displays with the optional
VIM-200 option using a Composite Video or S-Video source will not
output a loop-thru signal for those two sources.
The video cables used should be high quality and shielded to insure
the best image quality when displayed.
Using poor quality cables can lead to picture noise, jitter and
crosstalk.
Control data enters the VideoWall via the RS-232 In connection, and
is supplied to an adjacent VideoWall (if used) via the RS-232 Out
connector. High quality shielded cables designed for RS-232
communication should be used to ensure proper data transmission
and control.