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6 Pelco Manual C933M (7/99)
Contrast Control - This control adjusts the contrast between the black and white portions
of the picture. When properly adjusted, you will be able to observe a fine gradation between
blacks, grays, and whites.
Vertical Hold Control - This control permits adjustment of vertical stability. If the picture
“rolls” upward or downward, as shown in Figure 4, turn the VERTICAL HOLD clockwise or
counterclockwise until the picture stabilizes.
Horizontal Hold Control - This control permits adjustment of horizontal stability. If the
picture “tears” to the left or right, as shown in Figure 5, turn the HORIZONTAL HOLD
clockwise or counterclockwise until the picture stabilizes.
Figure 4. Vertical Roll
Figure 5. Horizontal Tear
To operate a monitor:
1. Make sure a standard 1.0 V peak-to-peak video signal is applied to the video input of
the monitor.
2. Press the power switch to turn on the power. The power indicator LED will illuminate.
3. Adjust the brightness and contrast controls to obtain optimum picture quality.
MAINTENANCE
The only maintenance required is to periodically clean the cabinet and screen.
Use a damp cloth to clean the screen.
Use mild soap and water to clean the cabinet. Some common household aerosol sprays,
cleaning agents, solvents, or polishes may damage the cabinet finish. Dry the cabinet with
a soft cloth.