Extron Electronics IN3218 - Manual (Page 12)

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IN3212 / IN3214 / IN3218 OPERATION MANUAL - REV. 1 10/25/97 ©1997 - INLINE, INC.
TROUBLESHOOTING
Problem: There is no image on the output of the IN3212 / IN3214 / IN3218.
Suggestions:
q Make sure the power supply is plugged in and that the input and output cables are
connected properly.
q Bypass the IN3212 / IN3214 / IN3218 by connecting the input and output cables
with a BNC barrel connector to ensure there is a video signal present.
Problem: The output image is too dark.
Suggestion:
q First make sure the display device contrast and brightness controls are set properly.
Then increase the appropriate IN3212 / IN3214 / IN3218 gain control until the
desired image is achieved.
Problem: The output image is too bright or the picture blooms.
Suggestions:
q First make sure the display device contrast and brightness controls are set properly.
Then decrease the appropriate IN3212 / IN3214 / IN3218 output gain control until
the desired image is achieved.
q The input termination may be set to High Z. Check the termination jumper settings
(see pages 4-6.)
Problem: The output image is not sharp enough. Vertical lines are very thin.
Suggestions:
q Make sure you are using the appropriate video cable for your signal type. When
dealing with high resolution video signals, a high quality coaxial cable must be used
for long distance cable runs (50 ft. or more). IN7100 or IN7200 series cables are
recommended for very long cable runs.
q Increase the peaking control of the IN3212 / IN3214 / IN3218 to compensate for
high frequency losses.
Problem: The loop output is not working.
Suggestion:
q The input termination for input 1 must be set to High Z. Set the internal jumpers as
shown on pages 4-6.