12 Pelco Manual C2422M (5/00)
Main Menu
<Camera>
<Line Sync>
<Power Up>
<Other>
EXIT
Line Sync Menu
Line sync On
Line sync phase 0
Exit
Scan Limit Stops

Refer to the documentation for your control system for programming presets, and then do

the following:

1. Make sure limit stops are turned ON, and then exit the menu.

2. Push the joystick left until you reach the limit you want the camera to go to on the left.

3. Program preset 92 (25).

4. Push the joystick right to the limit you want the camera to go to on the right.

5. Program preset 93 (26).

Setting presets 92 (25) and 93 (26) to the same point disables scan limit stops.

If cameras are out of phase with each other, they may produce what appears to be vertical roll
when switching between cameras.
There are two settings for line synchronization:
On - Adjust the synchronization of the power line voltage so that it is in phase with other
cameras.
Off - The dome synchronizes to an internal clock.
To change the line synchronization settings:
1. Program preset 95 (28). The main menu appears.
2. Position the cursor (>) beside Line Sync.
3. Press the Iris Open button. The Line Sync menu appears.
4. Position the cursor (>) beside one of the choices. Press the Iris Open button.
LINE SYNC - The cursor moves to one of two choices: ON or OFF. Move the joystick up or
down to toggle between them. Press the Iris Open button to select the choice. If you changed to
OFF, the camera may reset itself as it adjusts to the new synchronization. If the camera resets,
it will only affect the line synchronization. It will not change any other camera parameters, such
as auto focus or auto iris. Press the Iris Close button if you do not want to change the setting.
LINE SYNC PHASE - The cursor moves to a numeric value. Move the joystick up or down
to change the value. Press the Iris Open button to select the choice. The value represents the
phase angle in tenths of a degree between 0 degrees and 350 degrees. For example, 900 is
90 degrees, 1200 is 120 degrees, and 2400 is 240 degrees. Press the Iris Open button on
your keyboard to select your choice. The Line Sync setting will change to ON. The camera
may reset or the picture on your monitor may wiggle when you change the phase angle. If the
camera resets, it will only affect the line synchronization. It will not change any other camera
parameters, such as auto focus or auto iris. Press the Iris Close button if you do not want to
change the setting.
LINE SYNCHRONIZATION
NOTE:

On power-up, the

auto scan tilt angle will be

whatever angle the camera

was at when the right scan

limit was set.