User manual

The sender and receiver units both have sets of DIP switches located on the

underside of their casings. There is a piece of silver metallic tape that must be

removed to expose these DIP switches. Each unit carries a bank of 4 DIP switches.

Dip switches 1 and 2 on the sending unit and DIP switch 1 on the receiving unit are

used in this procedure. By default, all DIP switches on the receiving units should

be in the OFF position (Auto EQ On). DIP switch 2 on the sending unit should be in

the ON position (No Boost). To turn off auto equalization, turn DIP switch 1 on the

receiving unit to the ON position (Auto EQ off). With this setting please follow the

steps below to equalize the picture.

1. Insert a small ﬂ at head tool into the trimpot on the receiver unit.

2. Turn the trimpot in a clockwise fashion until it comes to a stop. Do not force the

trim pot beyond this point. Doing so may break the trim pot.

3. Slowly turn the trimpot counter-clockwise in millimeter increments until the

image stabilizes and all video noise disappears.

4. Carefully remove the adjustment tool.

NOTE: If your cable run is beyond 130 feet, or the following steps do not produce

any video, it may be necessary to increase the boost from the sending unit. Use

the chart below to increase the boost by changing the sender DIP switches. Once

a new boost setting is set, repeat steps 1 through 4 from above.

Sender DIP Switch Settings

Setting Switch 1 Switch 2

No Boost (Default) OFF ON

Medium Boost OFF OFF

High Boost ON OFF

Not Used ON ON

Receiver DIP Switch Settings

Setting Switch 1 Switch 2

Manual EQ ON OFF

Auto EQ (Default) OFF OFF

Adjustment Guidelines:

1. Strong boost should not be used on stranded cables. Strong boosting will cause

pixels or no picture on these cables.

2. Using the wrong settings will not damage the units; it will either produce no image

or a noisy image.

3. To eliminate the possibility of cross talk and interference, cables must be

terminated with 568B scheduling. (See page 9 for details)

4. No Boost should be set when using Auto EQ.

SERVICE SWITCH USAGE GUIDE