| WN-5230-S VideoWall User’s Guide |
| |
11. Save the settings | Open the Save Config menu and save the settings for |
| the current Source and Mode on each display, as |
| described above in Step 4 – Save, Recall, or Reset the |
| Settings on page 50. |
| |
If there are other video sources on different input connectors that will use Big Picture, go through the previous process for each video source. Then save these settings.
Loop-Thru of Source Video
Loop-thru works in different ways depending on the type of source.
If the source video is PC or MAC, the same signal is output from the LOOP-THRU connector, which can be connected to the next unit’s PC input.
If the source is RGB with separate composite sync at 31.5 kHz
(progressive scan), it will come out the LOOP-THRU connector as RGB with the composite sync on the connector’s H-Sync pin and separated V-Sync on the V-Sync pin. Feed this to the next unit’s RGBS connector. It might also work to feed this to the next unit’s PC connector.
If the source is RGB Sync on Green at 31.5 kHz (progressive), it will come out the LOOP-THRU connector as RGB-Sync on Green, plus composite sync on the H-Sync output pin, and separated V-Sync on the V-Sync pin. Feed this to the next unit’s RGBS connector. It might also work to feed this to the next unit’s PC connector.
If the source is RGBS at 15.75 kHz (interlaced), the output from the LOOP-THRU connector will also be 15.75 kHz. It will not work to loop this output to the next display’s PC input, because the PC input is expecting 31.5 kHz. To loop RGBS at 15.75 to the next display, make an adapter to go from 15-pin to 9-pin using the wiring diagram below. Standard 15-pin-to-9-pin adapters may also be available from some computer stores. Connect the first display’s LOOP-THRU output to the next display’s 9-pin RGBS input. Alternatively, use a 15-pin to 4-BNC adapter cable. These are also usually available from electronics or computer stores.
Composite and S-videoinputs have their own separate loop-thru connectors. These are buffered. The inputs are terminated in 75 ohms. Using video loop-thru slightly degrades signal quality as the signal goes through each cube. The amount of degradation depends on cable quality, source video, and the number of loops. If this degradation becomes a problem, use a signal splitter or distribution amplifier to directly drive each cube or to at least reduce the number of loops.
