Question regarding adjusting phase/line lock

[cutsgems 0]

Been out of the video world for a while. Setting up a 9 channel American Dynamics DVR with AD Cameras and a 24VAC supply. Do the DVR's compensate for vertical sync timing differences if I set my cams for internal sync or do I need to set my camera DIP switches for Line Lock and time the cameras using an o-scope. with the 24VAC? If I time the cameras, can I set them on the bench & ignore the propagation delay of the cable, single runs are less than 100 ft. Advice appreciated, TIA

[kensplace 0]

Never had any problems with line lock yet, just plug and play..

 

A modern DVR should be fine without any oscilloscope measurements of phase etc. At least, its not something I have ever had a problem with.

[RickA 0]

Have not had to mess with doing phase adjustment for a while, usually not needed anymore like kensplace said most are plug and play anymore.

[survtech 0]

The phase or "line lock" adjustment was used with older switchers, recorders and monitors so that when switching from camera-to-camera, the picture would not roll or break up. Modern switchers, DVR/NVR recorders and monitors do not have that problem so it is usually not necessary to touch that adjustment.

[valboosky 0]

ive never had to do this adjusment recently except on matrix switches, used in places like TV studios

 

not needed in this type of DVR

 

regards,

 

Val

American Dynamics