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Pelco Manual C1487M-D (7/99) 33
PEAK - (Spectra II only) The cursor moves to a numeric value. Increasing this value
will cause the auto iris circuit to react more to highlights or “peaks” in the picture. Decreas-
ing this value will cause it to use the average video level to adjust the iris. 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.
If auto iris is in the auto mode, it remains that way until you manually open or close the iris.
The dome will return to auto iris when it is panned or tilted more than 15 degrees.
If there is not enough light for a good picture when the iris is wide open, you can increase
the gain of the camera to improve the picture. To do this:
1. Hold down the Iris Open button until the iris is wide open.
2. Release the button.
3. Within one second, hold down the button again. This will start increasing the camera
gain. Hold down the button until a desirable picture is obtained or the maximum gain is
reached.
SHUTTER SPEED
There are several electronic shutter speed settings:
Spectra II™ Spectra Lite™
Auto Auto
1/100 1/125
1/120 1/500
1/500 1/1,000
1/1000 1/2,000
1/2000 1/4,000
1/4000 1/10,000
1/10,000
1/30,000
In the Auto setting the camera controls the shutter speed automatically.
Increasing the shutter speed lowers the light sensitivity, but rapidly moving objects will be
less blurred as the speed is increased.
To change the electronic shutter speed settings:
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 Next.
5. Press the Iris Open button to go to the next camera submenu.
6. Move the joystick up or down to position the cursor beside Shutter Speed.
7. Press the Iris Open button on your keyboard.
8. A star will appear beside Shutter Speed and the cursor will move to the right beside
the current shutter speed.
9. Move the joystick up or down to choose the shutter speed.
10. 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.