This CCTV Security Camera switch selects the camera synchronization mode: internal synchronization mode (INT) or line-lock mode (LL).
L/L: Sets it to line-lock mode. This makes the vertical phase of the camera’s video signal match the phase of the AC power.
INT: Sets the internal sync to 2:1 interlaced.
L/L INT Switch – Security Camera Switches & Adjustments
GIVE OUR BLOG SOME LOVE!
Syndicate
#1 by Eric on November 9, 2009 - 1:32 pm
So this is helpful where the power has phase issues. Particularly where there is a variance from the standard 60Hz cycle that we rely on for AC power.
I’m pretty sure the 2nd part is wrong. Can somebody please check with the MFG. and update this post?
#2 by Ralph Zimmerman on November 9, 2009 - 4:09 pm
I am glad there is some one that know what all this stuff means.
#3 by Hugh Kelly on November 9, 2009 - 6:08 pm
The way I understand the “interlace mode” to be used is as a process where every other horizontal line is scanned in one field while the alternate lines are scanned in the next field to produce a complete picture frame.
#4 by yanieh on November 10, 2009 - 8:16 am
what are these for again? kindly elaborate. i would love to know. thanks a lot.
#5 by tomato64 on November 10, 2009 - 12:10 pm
hmm, still not sure I understand…
#6 by Matthew on November 16, 2009 - 4:50 pm
I’m unclear as to the importance of these switches. Can someone elaborate?