Gefen EXT-HDMISB - Manual (Page 9)

Manual Video Equalization with the Trim Pot Control
The equalization Trim Pot (Potentiometer) can be used to manually fi ne tune
the video signal coming from the source device. If there is noise or no picture,
adjusting the Trim Pot can resolve the issue.
1. Locate the Trim Pot adjustment port on the HDMI Super Booster Cable
head. Insert a small fl at-head tool into the port.
2. Gently turn the Trim Pot in either a clockwise or counter-clockwise direction
in very small increments until all video noise has been eliminated. The
position in which noise is eliminated can be easy to miss.
3. Once the desired video image is obtained, remove the adjustment tool.
NOTE: Do not force the Trim Pot past the point where it stops turning. This may
break the adjustment dial and render the HDMI Super Booster Cable useless.
USING VIDEO EQUALIZATION TO GET AN OPTIMAL PICTURE
Video Equalization using the internal DIP switches
There is a small bank of switches underneath the booster chassis known as DIP
switches. To use them to adjust the video behavior, use a small pointed object
to push the switches ON or OFF as follows:
DIP Switch 2 is not used. DIP Switch 1 turns on automatic video equalization
(tuning out of unwanted noise) when in the OFF position. If video noise is still
present, turn DIP Switch 1 to the ON position and then manually tune the signal
using the manual equalization (EQ) Trim Pot control. Gently adjust the EQ Trim
Pot control using the techniques described immediately below.
USING DIP SWITCHES TO TOGGLE AUTO EQ:
6