iwatchlive 0 Posted November 4, 2005 I know it seems like a dumb thread, but I wanted to begin talking about the differences and experiences with using both. I have to do a hugh 100,000 square foot warehouse the customer already ordered 24 volt cameras. I needed to use cat5 and baluns, but ware scared to use 24 volt over cat5 due to past nightmare with 60Hz lines everywhere! Any help? Share this post Link to post Share on other sites
VST_Man 1 Posted November 4, 2005 24vac is better on longer runs, beyond 200ft. Beyond 500ft I'd go with 28vac to make up for the drop. Active Baluns work best. Any noise on the video can be blocked via a ground loop isolator. Observe the "line seperation" rule and you won't get noise. seperation of 1ft. along side or 6 inches on a cross Bottom Line; buy great baluns and you won't have a prob with noise. Buy $20 specials and you'll get a $20 pic. Do go cheap, invest. Share this post Link to post Share on other sites
Zark 0 Posted November 9, 2005 If 24VAC runs cooler, is better for long wire runs and is less prone to surge damage, then is there any situation where you would choose to use 12VDC? Are there any advantages of using 12VDC over 24VAC? Share this post Link to post Share on other sites
rory 0 Posted November 9, 2005 none really, except 24VAC shouldnt be run in the same bundle as data lines. Share this post Link to post Share on other sites
sal 0 Posted November 9, 2005 12VDC is beneficial for battery powered situations such as Mobile Surveillance Share this post Link to post Share on other sites
ZK 0 Posted November 11, 2005 My dual power supply (12VDC/24 VAC Altronix #ALTV1224C) is producing 29 volts AC at the panel. 18 AWG wire runs are about 80 feet. Voltage drop is not much. Cameras are getting 28+ volts. The Sony SSC-E473 specifications read +-10% on 24 volts AC. Will running them at 28+VAC cause problems? Am I worrying too much? Thanks ZK Share this post Link to post Share on other sites
rory 0 Posted November 11, 2005 Do you have a link to the camera spec sheet? Most will say whether it can take 28vac .. for example they may say 18-30VAC ... If it only can accept 24VAC then 28VAC may eventually fry the camera. Rory Share this post Link to post Share on other sites
ZK 0 Posted November 11, 2005 Thanks Rory, http://bssc.sel.sony.com/BroadcastandBusiness/docs/whitepapers/ssc_e473_final.pdf I suppose I could could just run them on 12VDC if the AC produces too much voltage. I don't think the AC is adjustable like the DC output. Share this post Link to post Share on other sites
rory 0 Posted November 11, 2005 Yeah their specs dont spell it out, best to email Sony and check just in case. Share this post Link to post Share on other sites
CSG 0 Posted November 11, 2005 Maybe you should call Altronix and yell WTF? Share this post Link to post Share on other sites
rory 0 Posted November 11, 2005 yep, supposed to stop at 24!! LOL Share this post Link to post Share on other sites
cctv_down_under 0 Posted November 11, 2005 The power supplies I use have a trim pot, but you have to open them to find it, I would have a look at your power supply, they probably have an adjustment Share this post Link to post Share on other sites
iwatchlive 0 Posted November 11, 2005 I have been out for a while, as I became a father about a month ago. I wanted to thank everyone for there replies and thoughts on my question. I look forward to many sleepless nights and posting on here again! Share this post Link to post Share on other sites
Jasper 0 Posted November 11, 2005 Congratulations on the new member of the family. Share this post Link to post Share on other sites
Zark 0 Posted November 11, 2005 Sony tech support said the cameras' upper voltage range was 29 VAC and it should work fine. ZK/Zark Share this post Link to post Share on other sites
sal 0 Posted November 12, 2005 Good to know. Would like to hear back from you 3 months from now just to make sure all is ok. Just out of curiosity. Share this post Link to post Share on other sites
