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Operation, cont’d
MVX Plus 128 VGA Matrix Switchers • Operation
3-44
PRELIMINARY
Troubleshooting
This section gives recommendations on what to do if you have problems operating
the switcher, and it describes an actual image problem that Extron has encountered.
1. Ensure that all devices are plugged in and powered on. The switcher is
receiving power if one of the front panel Power Supply LEDs is lit green.
2. Check to see if one or more outputs are muted.
3. Ensure an active input is selected for output on the switcher.
4. Ensure that the proper signal format is supplied.
5. Check the cabling and make corrections as necessary.
6. Call the Extron S
3
Sales & Technical Support Hotline if necessary.
Confi guration Worksheets
Rather than trying to remember the confi guration for each preset, use worksheets
to record this information. Make copies of the blank worksheet on page 3-47 and
use one for each preset confi guration. Cross out all unused or inactive inputs and
outputs. Use different colors for video and audio.
Worksheet example 1: System equipment
Figure 3-72 shows a worksheet for an MVX 128 in a fi ctional organization with
the system hardware annotated. Inputs 10 and 11 have no connection in this
organization, so they have been crossed out on the worksheet.
1 2345678
12345678
9101112
Preset # Title: Video: Audio:
Fill in the preset number and use colors, or dashes, etc. to make connecting lines.
Indicate if the configuration is for Video, Audio, or both.
Classroom
#1 VCR
USP 405
Audio
CD
PC 2
RGB 202
PC 1
RGB 202
Weekly status mtg 3
Camera
#2
Camera/
mic - Main
podium
Main hall
FP #1
Main hall
FP #2
Podium
monitor
Sound
system
#1
Sound
system
#2
VCR
(VSC 500)
Lobby
monitor
Classroom
#2 VCR
USP 405
Laptop
RGB 202
Rack DVD
(USP 405)
VTG 300
1
Input sources
Output destinations
Figure 3-72 — Worksheet example 1: System equipment
Inputs include PCs, an audio CD player, cameras, and an Extron VTG 300. Output
devices include monitors, front and rear projectors, a stereo, and a VCR for
recording presentations.
The VTG 300 video test generator connected to input 12 enables a video test pattern
to be sent to one, several, or all output devices for problem isolation or adjustment
purposes. An audio test tape or CD could be used in a similar manner to check out
the audio components.