You may have already seen the post in our forum, but in case you don’t frequent the site… the answer (posted by our engineering team) is NO, do not attempt to use voltages above 30 VDC.
http://community.cambiumnetworks.com/t5/PMP-450/PMP450-AP-48-volt-support/m-p/51650#M2172 To quote him: “You may be able to get it running for some time but eventually, because of the overstress on the parts” and this will eventually cause them to fail prematurely. Thanks, Matt From: Af [mailto:af-boun...@afmug.com] On Behalf Of Scott Vander Dussen Sent: Thursday, March 10, 2016 7:27 PM To: af@afmug.com Subject: Re: [AFMUG] FSK power problem? Well, we powered several 450 APs this morning off 48v for about 3 hours :) Thanks, `S --- Sent mobile, typed by thumbs. On Mar 10, 2016, at 16:36, George Skorup <geo...@cbcast.com<mailto:geo...@cbcast.com>> wrote: At one time, there was a roadmap slide that stated 48V support for the 450 AP. Long, long before the 450i was ever mentioned. So I wonder if the hardware supports 22-56V, but they tell us that it's just the 29.5 standard. Matt, Aaron, someone.. what's the deal? If the regular 450 AP will indeed run fine at 48-56V, that would really simplify a lot. Like I can downsize some DC-DC converters. On 3/10/2016 1:38 PM, Josh Baird wrote: Good point. We don't use hardly any 450.. but the spec sheet does indeed say 22-32VDC. On Thu, Mar 10, 2016 at 2:20 PM, George Skorup <geo...@cbcast.com<mailto:geo...@cbcast.com>> wrote: So if I'm reading this correctly... regular 450 APs are being powered and running happily at 48VDC? That's funny because they're also supposed to be 30VDC max. On 3/10/2016 11:45 AM, Scott Vander Dussen wrote: You know what's funny is we did... But every time we tested we happened to grab 450 since that's almost exclusively what were installing now. One time one of the techs put a FSK SM on it and it died- he mentioned it in passing but we chalked it up to bad FSK taken from our graveyard bin on pulls. �� Thanks, `S --- Sent mobile, typed by thumbs. On Mar 10, 2016, at 09:34, Josh Luthman <j...@imaginenetworksllc.com<mailto:j...@imaginenetworksllc.com>> wrote: That's awesome. Glad it's not too bad. Next time lab it :) Josh Luthman Office: 937-552-2340<tel:937-552-2340> Direct: 937-552-2343<tel:937-552-2343> 1100 Wayne St Suite 1337 Troy, OH 45373 On Mar 10, 2016 12:31 PM, "Scott Vander Dussen" <sc...@velociter.net<mailto:sc...@velociter.net>> wrote: As an update, we scrounged up 4 connectorized APs of our own and Bill Prince has 2 which I'm driving out to go get. Paul McCall is also connectorized and shipping me some for spares. Love this list, thanks guys! We'll have 80% of the customers restored within 90 minutes, the rest this afternoon. Whew, fun morning. -----Original Message----- From: Af [mailto:af-boun...@afmug.com<mailto:af-boun...@afmug.com>] On Behalf Of Chuck McCown Sent: Thursday, March 10, 2016 8:07 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? Or, if Cambium was nice, they could give you code to convert an SM into an AP. -----Original Message----- From: Chuck McCown Sent: Thursday, March 10, 2016 9:05 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? If you are good with an iron, you could remove the regulator chip from an SM and replace it into the AP (assuming it is the regulator that dies from overvoltage). -----Original Message----- From: Chuck McCown Sent: Thursday, March 10, 2016 9:05 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? He might could do an advance replacement... -----Original Message----- From: Chuck McCown Sent: Thursday, March 10, 2016 9:04 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? Paul McCall can probably fix those APs. -----Original Message----- From: Christopher Tyler Sent: Thursday, March 10, 2016 9:03 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? Live an learn. At least you'll never do it again (hopefully). -- Christopher Tyler MTCRE/MTCNA/MTCTCE/MTCWE Total Highspeed Internet Services 417.851.1107<tel:417.851.1107> ----- Original Message ----- From: "Chuck McCown" <ch...@wbmfg.com<mailto:ch...@wbmfg.com>> To: af@afmug.com<mailto:af@afmug.com> Sent: Thursday, March 10, 2016 10:02:07 AM Subject: Re: [AFMUG] FSK power problem? We all just shed a collective tear... At least tomorrow is Friday, right? Spring his here! Jaime is bound to put some photos of good food on the list. Plenty of reasons to continue to live Scott. From: Scott Vander Dussen Sent: Thursday, March 10, 2016 8:58 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? Oh wow, that’s fairly misleading. So I just smoked a ring of FSK. From: Af [mailto:af-boun...@afmug.com<mailto:af-boun...@afmug.com>] On Behalf Of Josh Baird Sent: Thursday, March 10, 2016 7:56 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? Yeah, the SI's take up to ~60V, but they output what you feed them. If you feed them 48V, they output 48V. They do not have internal DC/DC converters unless I completely missed a new product announcement from Forrest (but, I don't see this product on the website). On Thu, Mar 10, 2016 at 10:55 AM, Scott Vander Dussen <sc...@velociter.net<mailto:sc...@velociter.net>> wrote: Thanks, `S --- Sent mobile, typed by thumbs. On Mar 10, 2016, at 07:53, Josh Baird <joshba...@gmail.com<mailto:joshba...@gmail.com>> wrote: I haven't heard of this magical SyncInjector with a built in DC-DC converter that you speak of! On Thu, Mar 10, 2016 at 10:48 AM, Scott Vander Dussen <sc...@velociter.net<mailto:sc...@velociter.net>> wrote: Yes, but we're using SyncInjector version IO which allows 24-56VDC input and regulates that back down to 24VDC for the radios. -----Original Message----- From: Af [mailto:af-boun...@afmug.com<mailto:af-boun...@afmug.com>] On Behalf Of Chuck McCown Sent: Thursday, March 10, 2016 7:39 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] FSK power problem? Dumb question: You know the FSK have an absolute max input voltage of 30 VDC with the smoke exit voltage around 36 VDC, right? -----Original Message----- From: Scott Vander Dussen Sent: Thursday, March 10, 2016 8:34 AM To: af@afmug.com<mailto:af@afmug.com> Subject: [AFMUG] FSK power problem? We just changed out a 24vdc 20A AC/DC power supply with a 48vdc rectifier. This powers 4 Syncinjectors and 2 Netonix. There is a mix of 450 and FSK APs in each of those Syncinjectors. When we powered back up 6 of the 6 FSK wont establish eth link with the Netonix, all the 450 are fine. Ideas? Tower climber en route but I'm stumped. TIA Thanks, `S --- Sent mobile, typed by thumbs.
