Gefen EXT-VGA-CAT5-142 User Manual download pdf (Page 9)

ADJUSTING THE 2X VGA EXTENDER RECEIVER

Brightness (AGC dip switch, Brightness trim pot)

The 2X VGA Extender receiver features an automatic gain control (AGC) for

brightness. This should set the optimal brightness based on the video signal.

However, manual adjustment can be done by disabling this feature. To disable

AGC, remove the silver metallic tape on the underside of the 2X VGA Extender

receiver to expose a 2 dip switch bank and a pair of trim pots. By default, AGC is

turned on as indicated by dip switch 1 being in the ON position (Dip switch 2 is

not used). Disable AGC by turning dip switch 1 to the OFF position. Adjustment

to the brightness can now be done using the Brightness (Br.) trim pot, located on

the back panel of the 2X VGA Extender receiver unit. Use steps 1 through 4 on

the previous page to adjust the brightness trim pot.

Color Skew Correction (Red, Green, and Blue trim pots)

Varying cable quality, length, and skew may offset the convergence of the three

primary colors. Red, green, and blue can individually be adjusted to compensate

for cable skew. Please use steps 1 through 4 on the previous page on the trim

pots for each color.

Focus (Focus and CABLE EQ trim pots)

If the image appears blurry or ghosted, the focus may need to be adjusted. Use

steps 1 through 4 on the previous page on the Focus (Foc.) trim pot, located on

the back panel of the 2X VGA Extender receiver unit.

The focus can be ﬁ ne tuned using the CABLE EQ trim pot located on the

underside of the 2X VGA Extender. Use steps 1 through 4 on the previous page

to adjust the CABLE EQ trim pot.

Offset

Not for user adjustment. For service purposes only.

AGC

Cable EQ

Offset

1 2 3 4 5 6 7 8 9 10 11 12 13 14

No comments

Gefen EXT-VGA-CAT5-142 User Manual Page 9