Pelco c1487-c operation manual Gain, Auto Iris

Gain

The gain adjusts the signal level of the video output. Increasing the gain in low light conditions will increase the level of noise in the picture.

To change the gain:

1.Program preset 95 (28 if in 32-preset mode; refer to the Preset Functions section) to access the main menu (refer to the Main Menu Access section). The main menu will appear.

2.If the cursor (>) is not beside Camera, move the joystick up or down to position the cursor beside Camera.

3.Press the Iris Open button to enter the Camera submenu.

4.Move the joystick up or down to position the cursor beside Gain/AGC.

5.Press the Iris Open button to enter the Gain/AGC submenu.

6.Move the joystick up or down to position the cursor beside Gain.

7.Press the Iris Open button on your keyboard. A star will appear beside Gain and the cursor will move to the right beside the current gain setting (a numeric value).

8.Move the joystick up or down to change the gain. As you change the gain, the picture on your monitor will get brighter or darker.

9.SELECT - Press the Iris Open button on your keyboard to select your choice. CANCEL - Press the Iris Close button if you do not want to change the setting.

AUTO IRIS

There are three settings for auto iris: mode, level, and peak.

To change the settings for auto iris:

1.Program preset 95 (28 if in 32-preset mode; refer to the Preset Functions section) to access the main menu (refer to the Main Menu Access section). The main menu will appear.

2.If the cursor (>) is not beside Camera, move the joystick up or down to position the cursor beside Camera.

3.Press the Iris Open button to enter the Camera submenu.

4.Move the joystick up or down to position the cursor beside Auto-Iris.

5.Press the Iris Open button on your keyboard. Another menu will appear with auto-iris mode, level, and peak selections.

6.Move the joystick up or down to position the cursor beside one of the choices. Press the Iris Open button on your keyboard.

MODE - The cursor moves to one of two choices: Auto or Off. In the Auto mode, the iris is automatically adjusted to produce a constant video output as determined by the Level setting below. In the Off mode, auto iris is disabled, and control is always manual. Move the joystick up or down to toggle between Auto and Off. Press the Iris Open button to select the choice, or press the Iris Close button if you do not want to change the setting.

LEVEL - The cursor moves to a numeric value, which the Spectra II™ dome uses to try to maintain a certain light level. Changing the value of the Level setting will change the video level to which the auto iris adjusts. This setting should be adjusted if the video level in the auto iris mode is too bright or too dark. Move the joystick up or down to a value. Press the Iris Open button to select the value, or press the Iris Close button if you do not want to change the setting.

32 Pelco Manual C1487M-C (7/99)