22 Pelco Manual C1490M (10/98)
You can increase the camera gain to improve the picture if there is not enough light
for a good picture. To do this:
1. AGC mode must be in either Auto or Off (the following steps will not work if
AGC is ON).
2. Hold down the Iris Open button until the iris is wide open, then release the
button.
3. Within one second, hold down the button again. This increases camera gain.
Hold down the button until you get a desirable picture or reach the maximum
gain.
4.11.7 Shutter Speed
There are nine electronic shutter speeds:
Auto 1/100 1/120
1/500 1/1,000 1/2,000
1/4,000 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. On the main menu, move the joystick up or down to position the cursor (>)
beside Camera.
2. Press the Iris Open button to enter the Camera submenu.
3. Move the joystick up or down to position the cursor beside Next.
4. Press the Iris Open button to go to the next camera submenu.
5. Move the joystick up or down to position the cursor beside Shutter Speed.
6. Press the Iris Open button. The cursor moves to the right beside the current
shutter speed.
7. Move the joystick up or down to choose the shutter speed.
8. SELECT - Press the Iris Open button to select your choice.
CANCEL - Press the Iris Close button if you do not want to change the setting.
4.11.8 Auto-Focus Mode
The two auto-focus modes are auto and off.
• If auto focus is in auto mode, pressing the Focus Far or Focus Near button
places the focus in manual mode. The dome returns to auto focus if you pan or
tilt the unit or do a zoom function.
• If auto focus is set to off, the dome operates in manual mode with one excep-
tion. If you issue a command to go to a preset, auto focus turns on and re-
mains on until you press the Focus Far or Focus Near button.
To change the mode:
1. On the main menu, move the joystick up or down to position the cursor (>)
beside Camera.
2. Press the Iris Open button to enter the Camera submenu.
3. Move the joystick up or down to position the cursor beside Next.
4. Press the Iris Open button to go to the next camera submenu.
5. Move the joystick up or down to position the cursor beside Auto-Focus Mode.
6. Press the Iris Open button. The cursor moves to the right beside the word Auto
or Off.
7. Move the joystick up or down to toggle between Auto and Off.
8. SELECT - Press the Iris Open button to select your choice.
CANCEL - Press the Iris Close button if you do not want to change the setting.
4.11.9 Sharpness
The two modes for adjusting the picture sharpness are automatic and manual. To
change the mode:
1. On the main menu, move the joystick up or down to position the cursor (>)
beside Camera.
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