Hall-research UVA-WP Manual do Utilizador descarregar pdf (Página 12)

Model UVA-WP

There is a potentiometer (pot) or pushbuttons on the Model URA

receiver depending on the products revision. Turning the pot CW

increases the compensation. Use a small screwdriver and starting

from fully CCW; slowly turn the pot CW until the image is perfectly

clear. Fully CCW corresponds to no compensation (recommended for

lengths of 100 ft or less), and fully CW corresponds to 1000 feet.

Newer models use pushbuttons to adjust the compensation, follow the

directions supplied with that model. Be careful not to over-

compensate the video image.

The video quality at the remote station depends on:

(1) The length of the CAT5 cable

(2) The video resolution setting

(3) The video refresh rate setting

In general, at low and mid resolutions, excellent image reproduction is

provided at up to 1000 feet. At high resolution and refresh rates

perfect image reproduction can be achieved at shorter distances (see

table 2.1 below). Using longer cables or higher resolution rates will

still produce an image, but the reproduction quality will be reduced.

Refresh Rate

60 Hz 75 Hz 85 Hz

800x600 1000 ft 1000 ft 1000 ft

1024x768 1000 ft 800 ft 750 ft

1280x1024 750 ft 650 ft 600 ft

Resolution

1600x1200 750 ft 600 ft 500 ft

1920x1440 750 ft 750 ft 500 ft

Table 2.1

Maximum Recommended Cable Lengths

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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Hall-research UVA-WP Manual do Utilizador Página 12