User Manual

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.