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7.1.4 Synchronization (Line-Lock), Continued
Adjusting the Sync of All Cameras
If a MaxCom is used in a system that has several sync RapidDomes, they can all be
adjusted together.
1. Select the camera to be used as the reference camera.
2. Press Auto.
The MaxCom will select all the cameras in turn, do the measurements, and send the
adjustment commands to all the cameras in the system. The display shows
ADJUSTING SYNCS after a few seconds then will display FINISHED.
When the auto sync of the whole system is in progress, the pictures will flash as the
cameras are selected. The second measurement on each is not made and missing
cameras do not cause an error message.
During manufacture and test, the sync RapidDomes are set to a consistent phase
setting with respect to AC+. This means that if a system of sync RapidDomes is
installed and care is taken to be consistent in the choice of pins used for connecting
the AC supply, then the camera will already be synchronized (assuming that all the
power supplies are driven from the same phase of the mains.
Rev. 1
Note: The length of time taken for the camera to stabilize is not controllable.
Often it is less than 4 seconds, so the final result SYNC DIFFERENCE 00.0mS
will be seen. If the camera has not stabilized when the second measurement is
made, the displayed SYNC DIFFERENCE has no useful meaning. If the
measurement is repeated again, the camera will have stabilized and the
difference will be small (less than 00.5mS) so you will see that the second
measurement and adjustment was not needed. However, it does no harm to
repeat the adjustment as many times as desired.
Note: If the reference camera or camera to adjust is absent, one of the
following messages is displayed:
REFERENCE CAMERA FAIL UNABLE TO ADJUST SYNC
or
ADJUST CAMERA ABSENT UNABLE TO ADJUST SYNC
Note: If the CAMERA TO ADJUST is being controlled by coax telemetry or
simplex RS485, or the camera is not a sync RapidDome, then the OK will not be
displayed.
25
900.0560
18-July-2005
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