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Troubleshooting – Extron Electronics IN3260 User Manual

Page 16

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IN3260 Operation Manual - V 1.0 10/31/01

©2001 - INLINE, Inc.

14

Troubleshooting



Problem: The display device connected to the IN3260 output has a bad/scrambled
image.

Solution 1:
Verify that the correct input cable is being used (see the table on the previous

page).

Solution 2: The display device connected to the output of the interface may not be compatible

with the computer output. Standard 640 x 480 VGA runs at 31.5 KHz, but SVGA
can be as high as 48 - 58 KHz depending on the vertical refresh rate. PC, MAC,
Sun and other high resolution workstations have new ultra high resolution modes
such as 1600 x 1200 and 1800 x 1440 and can output a video signal with a
horizontal scan rate of over 100 KHz! Many data monitors and data projectors are
not compatible with these resolutions and frequencies.

Solution 3: The RGBS or RGBHV cable may have a bad sync line. Try running the sync

through another cable (i.e. temporarily use the red coax to connect the sync).


Problem: The local monitor looks fine but the image on the LCD projector is wavy or
has vertical bars in the picture.

Solution 1:
LCD / DMD displays often have an adjustment called Phase Adjust or Fine Phase

Control. This control should be adjusted to provide the best image.


Problem: The output image is doubled, with two images displayed side-by-side.

Solution:
The display device may not be compatible with the horizontal scan rate of the

computer. This problem often occurs when a 31.5 KHz VGA signal is sent into an
RGB monitor that is only compatible with signals at 15.75 KHz.


If problems persist, call INLINE Technical Services at (714) 450-1800 for further assistance.

You may also send email to [email protected]. or send a fax to (714)450-1850.