Re: [AFMUG] 802.3at POEs
The issue is that the standards-based PoE (3af/3at) add some relatively expensive components to the device cost. If you know that 99% of the time the device will be used with PoE with a supplied injector, passive PoE makes a lot of sense from a cost perspective. If you know that most of the time it will be used with a PoE switch, better to use standards-based PoE and skip including a power adapter to offset the cost. There is also a cost difference between 24V and 48V passive PoE although I'd say these days that difference is insignificant. -Hal On Mon, Jan 4, 2016 at 11:13 PM That One Guy /sarcasm < thatoneguyst...@gmail.com> wrote: > my mind just melted > > On Mon, Jan 4, 2016 at 8:29 PM, Eric Kuhnke wrote: > >> Time to connect a power-over-ethernet and ethernet-over-powerlines >> adapter in a loop and create free limitless energy. Who needs the >> E-cat!?! >> > On Mon, Jan 4, 2016 at 4:47 PM, Jaime Solorza >> wrote: >> > Stop making sense... it's disturbs the space time continuum >>> On Jan 4, 2016 5:33 PM, "That One Guy /sarcasm" < >>> thatoneguyst...@gmail.com> wrote: >>> >>>> POE is quite the crackwhore of terms nowadays, alot of people use her >>>> in alot of different ways and nobody wants to pay much. I wish there was >>>> just a design standard that just auto sensed and applied, 24v 48v pick a >>>> pair. Just to eliminate the additional stocking of appropriate power >>>> supplies and surge suppression, they would be worth a little more, and if >>>> it were to become common the cost would drop >>>> >>>> On Mon, Jan 4, 2016 at 5:30 PM, George Skorup >>>> wrote: >>>> >>>>> I believe Phihong wired it that way so that you can use it as a 3at >>>>> compliant injector where only two pairs may be present (so 10/100 only). >>>>> IP >>>>> phones come to mind. We run into a lot of older-ish structured wiring >>>>> where >>>>> they ran only one cat5 and stole one pair for phone and two pairs for >>>>> ethernet. Not the way I'd do it, but whatever. Most of the phones we're >>>>> using now have a built-in GigE switch. >>>>> >>>>> I remember seeing in the 450i guide that it will take either polarity >>>>> on all pairs. If you're not using the aux port, then two pairs for power >>>>> (30W) will be fine. If you are, or I suppose if it's a long run, then all >>>>> four pairs for power would be warranted. I really like this PoE design. >>>>> Would be nice if the regular 450 APs would take 48-56VDC. I know they >>>>> talked about that at one point, but it looks like we're limited to 30VDC. >>>>> Well, at least that's what the label says. >>>>> >>>>> The whole pin swapping thing with the 450i and CMM4 is because 56VDC >>>>> mode on the CMM4 is wired for the split pair 320/430 config. With the AP >>>>> being pair polarity agnostic, you don't need to do the swapping when using >>>>> a SyncInjector. Basically it will take the standard Canopy POE pinout, >>>>> just >>>>> needs to be >=48VDC. Probably more like >40VDC. >>>>> >>>>> On 1/4/2016 12:50 PM, Ken Hohhof wrote: >>>>> >>>>> Good point about the power being on 1/2 and 3/6. I guess that makes >>>>> it 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 >>>>> are wired straight through with no transformer. So gigabit compatible >>>>> with >>>>> only 2 transformers. Probably for non gigabit compatible, Alternative B >>>>> is >>>>> cheaper because you don’t need any transformers at all. And the 60-75 >>>>> watt >>>>> POEs use all 8 wires for data and power, so 4 transformers. >>>>> >>>>> So confusing! >>>>> >>>>> I can’t find any wiring diagrams for the Cambium N65L001B, but at >>>>> 60 watts, I guess it must use all 8 wires for power. Hence the price? >>>>> >>>>> Something else I notice is the Cambium POE is rated for 0 to 40C, >>>>> while the Phihong unit is rated –20 to +65C. Cambium tells you to use a >>>>> PIDU for non controlled environment. Or Netonix or GIGE-POE-APC or >>>>> Syncinjector. >>>>> >>>>> Still, AC powered POEs are handy for configuring r
Re: [AFMUG] 802.3at POEs
my mind just melted On Mon, Jan 4, 2016 at 8:29 PM, Eric Kuhnke wrote: > Time to connect a power-over-ethernet and ethernet-over-powerlines adapter > in a loop and create free limitless energy. Who needs the E-cat!?! > > On Mon, Jan 4, 2016 at 4:47 PM, Jaime Solorza > wrote: > >> Stop making sense... it's disturbs the space time continuum >> On Jan 4, 2016 5:33 PM, "That One Guy /sarcasm" < >> thatoneguyst...@gmail.com> wrote: >> >>> POE is quite the crackwhore of terms nowadays, alot of people use her in >>> alot of different ways and nobody wants to pay much. I wish there was just >>> a design standard that just auto sensed and applied, 24v 48v pick a pair. >>> Just to eliminate the additional stocking of appropriate power supplies and >>> surge suppression, they would be worth a little more, and if it were to >>> become common the cost would drop >>> >>> On Mon, Jan 4, 2016 at 5:30 PM, George Skorup wrote: >>> >>>> I believe Phihong wired it that way so that you can use it as a 3at >>>> compliant injector where only two pairs may be present (so 10/100 only). IP >>>> phones come to mind. We run into a lot of older-ish structured wiring where >>>> they ran only one cat5 and stole one pair for phone and two pairs for >>>> ethernet. Not the way I'd do it, but whatever. Most of the phones we're >>>> using now have a built-in GigE switch. >>>> >>>> I remember seeing in the 450i guide that it will take either polarity >>>> on all pairs. If you're not using the aux port, then two pairs for power >>>> (30W) will be fine. If you are, or I suppose if it's a long run, then all >>>> four pairs for power would be warranted. I really like this PoE design. >>>> Would be nice if the regular 450 APs would take 48-56VDC. I know they >>>> talked about that at one point, but it looks like we're limited to 30VDC. >>>> Well, at least that's what the label says. >>>> >>>> The whole pin swapping thing with the 450i and CMM4 is because 56VDC >>>> mode on the CMM4 is wired for the split pair 320/430 config. With the AP >>>> being pair polarity agnostic, you don't need to do the swapping when using >>>> a SyncInjector. Basically it will take the standard Canopy POE pinout, just >>>> needs to be >=48VDC. Probably more like >40VDC. >>>> >>>> On 1/4/2016 12:50 PM, Ken Hohhof wrote: >>>> >>>> Good point about the power being on 1/2 and 3/6. I guess that makes it >>>> 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are >>>> wired straight through with no transformer. So gigabit compatible with >>>> only 2 transformers. Probably for non gigabit compatible, Alternative B is >>>> cheaper because you don’t need any transformers at all. And the 60-75 watt >>>> POEs use all 8 wires for data and power, so 4 transformers. >>>> >>>> So confusing! >>>> >>>> I can’t find any wiring diagrams for the Cambium N65L001B, but at >>>> 60 watts, I guess it must use all 8 wires for power. Hence the price? >>>> >>>> Something else I notice is the Cambium POE is rated for 0 to 40C, while >>>> the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for >>>> non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. >>>> >>>> Still, AC powered POEs are handy for configuring radios on the bench, >>>> or like that case where I needed a POE at a customer’s office to power a >>>> SIP paging amplifier. >>>> >>>> >>>> *From:* George Skorup >>>> *Sent:* Monday, January 04, 2016 2:35 AM >>>> *To:* af@afmug.com >>>> *Subject:* Re: [AFMUG] 802.3at POEs >>>> >>>> It's cheaper at Allied: >>>> http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ >>>> >>>> Yeah, if you're not going to use the Aux port on the 450i, there's no >>>> reason to buy a 60W injector. Just keep in mind that this Phihong injector >>>> is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work >>>> perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt >>>> ExtendAir G2. The 450i is awesome with the any pair power setup. >>>> >>>> The one thing I will say about this thing is that it runs
Re: [AFMUG] 802.3at POEs
Time to connect a power-over-ethernet and ethernet-over-powerlines adapter in a loop and create free limitless energy. Who needs the E-cat!?! On Mon, Jan 4, 2016 at 4:47 PM, Jaime Solorza wrote: > Stop making sense... it's disturbs the space time continuum > On Jan 4, 2016 5:33 PM, "That One Guy /sarcasm" > wrote: > >> POE is quite the crackwhore of terms nowadays, alot of people use her in >> alot of different ways and nobody wants to pay much. I wish there was just >> a design standard that just auto sensed and applied, 24v 48v pick a pair. >> Just to eliminate the additional stocking of appropriate power supplies and >> surge suppression, they would be worth a little more, and if it were to >> become common the cost would drop >> >> On Mon, Jan 4, 2016 at 5:30 PM, George Skorup wrote: >> >>> I believe Phihong wired it that way so that you can use it as a 3at >>> compliant injector where only two pairs may be present (so 10/100 only). IP >>> phones come to mind. We run into a lot of older-ish structured wiring where >>> they ran only one cat5 and stole one pair for phone and two pairs for >>> ethernet. Not the way I'd do it, but whatever. Most of the phones we're >>> using now have a built-in GigE switch. >>> >>> I remember seeing in the 450i guide that it will take either polarity on >>> all pairs. If you're not using the aux port, then two pairs for power (30W) >>> will be fine. If you are, or I suppose if it's a long run, then all four >>> pairs for power would be warranted. I really like this PoE design. Would be >>> nice if the regular 450 APs would take 48-56VDC. I know they talked about >>> that at one point, but it looks like we're limited to 30VDC. Well, at least >>> that's what the label says. >>> >>> The whole pin swapping thing with the 450i and CMM4 is because 56VDC >>> mode on the CMM4 is wired for the split pair 320/430 config. With the AP >>> being pair polarity agnostic, you don't need to do the swapping when using >>> a SyncInjector. Basically it will take the standard Canopy POE pinout, just >>> needs to be >=48VDC. Probably more like >40VDC. >>> >>> On 1/4/2016 12:50 PM, Ken Hohhof wrote: >>> >>> Good point about the power being on 1/2 and 3/6. I guess that makes it >>> 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are >>> wired straight through with no transformer. So gigabit compatible with >>> only 2 transformers. Probably for non gigabit compatible, Alternative B is >>> cheaper because you don’t need any transformers at all. And the 60-75 watt >>> POEs use all 8 wires for data and power, so 4 transformers. >>> >>> So confusing! >>> >>> I can’t find any wiring diagrams for the Cambium N65L001B, but at 60 >>> watts, I guess it must use all 8 wires for power. Hence the price? >>> >>> Something else I notice is the Cambium POE is rated for 0 to 40C, while >>> the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for >>> non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. >>> >>> Still, AC powered POEs are handy for configuring radios on the bench, or >>> like that case where I needed a POE at a customer’s office to power a SIP >>> paging amplifier. >>> >>> >>> *From:* George Skorup >>> *Sent:* Monday, January 04, 2016 2:35 AM >>> *To:* af@afmug.com >>> *Subject:* Re: [AFMUG] 802.3at POEs >>> >>> It's cheaper at Allied: >>> http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ >>> >>> Yeah, if you're not going to use the Aux port on the 450i, there's no >>> reason to buy a 60W injector. Just keep in mind that this Phihong injector >>> is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work >>> perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt >>> ExtendAir G2. The 450i is awesome with the any pair power setup. >>> >>> The one thing I will say about this thing is that it runs a bit hot and >>> if your hearing is decent, you can definitely hear the switcher whining >>> away. >>> >>> On 1/3/2016 7:29 PM, Ken Hohhof wrote: >>> >>> I'm getting more and more equipment with 802.3at POEs, and I feel like >>> I'm getting raped on the price if I get the POE from the equipment vendor. >>> High price and minimal features.
Re: [AFMUG] 802.3at POEs
Stop making sense... it's disturbs the space time continuum On Jan 4, 2016 5:33 PM, "That One Guy /sarcasm" wrote: > POE is quite the crackwhore of terms nowadays, alot of people use her in > alot of different ways and nobody wants to pay much. I wish there was just > a design standard that just auto sensed and applied, 24v 48v pick a pair. > Just to eliminate the additional stocking of appropriate power supplies and > surge suppression, they would be worth a little more, and if it were to > become common the cost would drop > > On Mon, Jan 4, 2016 at 5:30 PM, George Skorup wrote: > >> I believe Phihong wired it that way so that you can use it as a 3at >> compliant injector where only two pairs may be present (so 10/100 only). IP >> phones come to mind. We run into a lot of older-ish structured wiring where >> they ran only one cat5 and stole one pair for phone and two pairs for >> ethernet. Not the way I'd do it, but whatever. Most of the phones we're >> using now have a built-in GigE switch. >> >> I remember seeing in the 450i guide that it will take either polarity on >> all pairs. If you're not using the aux port, then two pairs for power (30W) >> will be fine. If you are, or I suppose if it's a long run, then all four >> pairs for power would be warranted. I really like this PoE design. Would be >> nice if the regular 450 APs would take 48-56VDC. I know they talked about >> that at one point, but it looks like we're limited to 30VDC. Well, at least >> that's what the label says. >> >> The whole pin swapping thing with the 450i and CMM4 is because 56VDC mode >> on the CMM4 is wired for the split pair 320/430 config. With the AP being >> pair polarity agnostic, you don't need to do the swapping when using a >> SyncInjector. Basically it will take the standard Canopy POE pinout, just >> needs to be >=48VDC. Probably more like >40VDC. >> >> On 1/4/2016 12:50 PM, Ken Hohhof wrote: >> >> Good point about the power being on 1/2 and 3/6. I guess that makes it >> 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are >> wired straight through with no transformer. So gigabit compatible with >> only 2 transformers. Probably for non gigabit compatible, Alternative B is >> cheaper because you don’t need any transformers at all. And the 60-75 watt >> POEs use all 8 wires for data and power, so 4 transformers. >> >> So confusing! >> >> I can’t find any wiring diagrams for the Cambium N65L001B, but at 60 >> watts, I guess it must use all 8 wires for power. Hence the price? >> >> Something else I notice is the Cambium POE is rated for 0 to 40C, while >> the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for >> non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. >> >> Still, AC powered POEs are handy for configuring radios on the bench, or >> like that case where I needed a POE at a customer’s office to power a SIP >> paging amplifier. >> >> >> *From:* George Skorup >> *Sent:* Monday, January 04, 2016 2:35 AM >> *To:* af@afmug.com >> *Subject:* Re: [AFMUG] 802.3at POEs >> >> It's cheaper at Allied: >> http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ >> >> Yeah, if you're not going to use the Aux port on the 450i, there's no >> reason to buy a 60W injector. Just keep in mind that this Phihong injector >> is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work >> perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt >> ExtendAir G2. The 450i is awesome with the any pair power setup. >> >> The one thing I will say about this thing is that it runs a bit hot and >> if your hearing is decent, you can definitely hear the switcher whining >> away. >> >> On 1/3/2016 7:29 PM, Ken Hohhof wrote: >> >> I'm getting more and more equipment with 802.3at POEs, and I feel like >> I'm getting raped on the price if I get the POE from the equipment vendor. >> High price and minimal features. >> >> My Exalt G2 radios came with these really nice POEs that have diagnostic >> LEDs and tabs for wall mounting as well as rubber feet for desktop use. >> The only downside is they are kind of big, but that's not necessarily bad, >> that may help prevent overheating. It has LED indications for valid >> 802.3af and 802.3at signatures, as well as a flashing overload indication. >> >> I looked up the part number, expecting them to be expensive, but Digi-Key >>
Re: [AFMUG] 802.3at POEs
POE is quite the crackwhore of terms nowadays, alot of people use her in alot of different ways and nobody wants to pay much. I wish there was just a design standard that just auto sensed and applied, 24v 48v pick a pair. Just to eliminate the additional stocking of appropriate power supplies and surge suppression, they would be worth a little more, and if it were to become common the cost would drop On Mon, Jan 4, 2016 at 5:30 PM, George Skorup wrote: > I believe Phihong wired it that way so that you can use it as a 3at > compliant injector where only two pairs may be present (so 10/100 only). IP > phones come to mind. We run into a lot of older-ish structured wiring where > they ran only one cat5 and stole one pair for phone and two pairs for > ethernet. Not the way I'd do it, but whatever. Most of the phones we're > using now have a built-in GigE switch. > > I remember seeing in the 450i guide that it will take either polarity on > all pairs. If you're not using the aux port, then two pairs for power (30W) > will be fine. If you are, or I suppose if it's a long run, then all four > pairs for power would be warranted. I really like this PoE design. Would be > nice if the regular 450 APs would take 48-56VDC. I know they talked about > that at one point, but it looks like we're limited to 30VDC. Well, at least > that's what the label says. > > The whole pin swapping thing with the 450i and CMM4 is because 56VDC mode > on the CMM4 is wired for the split pair 320/430 config. With the AP being > pair polarity agnostic, you don't need to do the swapping when using a > SyncInjector. Basically it will take the standard Canopy POE pinout, just > needs to be >=48VDC. Probably more like >40VDC. > > On 1/4/2016 12:50 PM, Ken Hohhof wrote: > > Good point about the power being on 1/2 and 3/6. I guess that makes it > 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are > wired straight through with no transformer. So gigabit compatible with > only 2 transformers. Probably for non gigabit compatible, Alternative B is > cheaper because you don’t need any transformers at all. And the 60-75 watt > POEs use all 8 wires for data and power, so 4 transformers. > > So confusing! > > I can’t find any wiring diagrams for the Cambium N65L001B, but at 60 > watts, I guess it must use all 8 wires for power. Hence the price? > > Something else I notice is the Cambium POE is rated for 0 to 40C, while > the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for > non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. > > Still, AC powered POEs are handy for configuring radios on the bench, or > like that case where I needed a POE at a customer’s office to power a SIP > paging amplifier. > > > *From:* George Skorup > *Sent:* Monday, January 04, 2016 2:35 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] 802.3at POEs > > It's cheaper at Allied: > http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ > > Yeah, if you're not going to use the Aux port on the 450i, there's no > reason to buy a 60W injector. Just keep in mind that this Phihong injector > is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work > perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt > ExtendAir G2. The 450i is awesome with the any pair power setup. > > The one thing I will say about this thing is that it runs a bit hot and if > your hearing is decent, you can definitely hear the switcher whining away. > > On 1/3/2016 7:29 PM, Ken Hohhof wrote: > > I'm getting more and more equipment with 802.3at POEs, and I feel like I'm > getting raped on the price if I get the POE from the equipment vendor. > High price and minimal features. > > My Exalt G2 radios came with these really nice POEs that have diagnostic > LEDs and tabs for wall mounting as well as rubber feet for desktop use. > The only downside is they are kind of big, but that's not necessarily bad, > that may help prevent overheating. It has LED indications for valid > 802.3af and 802.3at signatures, as well as a flashing overload indication. > > I looked up the part number, expecting them to be expensive, but Digi-Key > has a bunch of them in stock and the price is quite reasonable ($38 in > single quantity). > > <http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576> > http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 > > From the picture, this is also the POE that I should have gotten from > CyberData to go with the SIP paging amplifier I bought, but instead they > sent a cheaper L-Com POE that has just one dumb LED to show it
Re: [AFMUG] 802.3at POEs
I believe Phihong wired it that way so that you can use it as a 3at compliant injector where only two pairs may be present (so 10/100 only). IP phones come to mind. We run into a lot of older-ish structured wiring where they ran only one cat5 and stole one pair for phone and two pairs for ethernet. Not the way I'd do it, but whatever. Most of the phones we're using now have a built-in GigE switch. I remember seeing in the 450i guide that it will take either polarity on all pairs. If you're not using the aux port, then two pairs for power (30W) will be fine. If you are, or I suppose if it's a long run, then all four pairs for power would be warranted. I really like this PoE design. Would be nice if the regular 450 APs would take 48-56VDC. I know they talked about that at one point, but it looks like we're limited to 30VDC. Well, at least that's what the label says. The whole pin swapping thing with the 450i and CMM4 is because 56VDC mode on the CMM4 is wired for the split pair 320/430 config. With the AP being pair polarity agnostic, you don't need to do the swapping when using a SyncInjector. Basically it will take the standard Canopy POE pinout, just needs to be >=48VDC. Probably more like >40VDC. On 1/4/2016 12:50 PM, Ken Hohhof wrote: Good point about the power being on 1/2 and 3/6. I guess that makes it 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are wired straight through with no transformer. So gigabit compatible with only 2 transformers. Probably for non gigabit compatible, Alternative B is cheaper because you don’t need any transformers at all. And the 60-75 watt POEs use all 8 wires for data and power, so 4 transformers. So confusing! I can’t find any wiring diagrams for the Cambium N65L001B, but at 60 watts, I guess it must use all 8 wires for power. Hence the price? Something else I notice is the Cambium POE is rated for 0 to 40C, while the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. Still, AC powered POEs are handy for configuring radios on the bench, or like that case where I needed a POE at a customer’s office to power a SIP paging amplifier. *From:* George Skorup <mailto:geo...@cbcast.com> *Sent:* Monday, January 04, 2016 2:35 AM *To:* af@afmug.com <mailto:af@afmug.com> *Subject:* Re: [AFMUG] 802.3at POEs It's cheaper at Allied: http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ Yeah, if you're not going to use the Aux port on the 450i, there's no reason to buy a 60W injector. Just keep in mind that this Phihong injector is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt ExtendAir G2. The 450i is awesome with the any pair power setup. The one thing I will say about this thing is that it runs a bit hot and if your hearing is decent, you can definitely hear the switcher whining away. On 1/3/2016 7:29 PM, Ken Hohhof wrote: I'm getting more and more equipment with 802.3at POEs, and I feel like I'm getting raped on the price if I get the POE from the equipment vendor. High price and minimal features. My Exalt G2 radios came with these really nice POEs that have diagnostic LEDs and tabs for wall mounting as well as rubber feet for desktop use. The only downside is they are kind of big, but that's not necessarily bad, that may help prevent overheating. It has LED indications for valid 802.3af and 802.3at signatures, as well as a flashing overload indication. I looked up the part number, expecting them to be expensive, but Digi-Key has a bunch of them in stock and the price is quite reasonable ($38 in single quantity). http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 From the picture, this is also the POE that I should have gotten from CyberData to go with the SIP paging amplifier I bought, but instead they sent a cheaper L-Com POE that has just one dumb LED to show it is getting AC power. So I paid something like $64 for a $31 POE. The $100 Cambium POE for 450i is probably more than 36 watts in case you want to use the AUX port on the AP, but it lacks the nice mounting tabs and diagnostic LEDs. And 36 watts should be more than enough to power just the AP. So I’m inclined to just buy a bunch of the nice Phihong units and use them on everything. Am I missing something?
Re: [AFMUG] 802.3at POEs
Good point about the power being on 1/2 and 3/6. I guess that makes it 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are wired straight through with no transformer. So gigabit compatible with only 2 transformers. Probably for non gigabit compatible, Alternative B is cheaper because you don’t need any transformers at all. And the 60-75 watt POEs use all 8 wires for data and power, so 4 transformers. So confusing! I can’t find any wiring diagrams for the Cambium N65L001B, but at 60 watts, I guess it must use all 8 wires for power. Hence the price? Something else I notice is the Cambium POE is rated for 0 to 40C, while the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. Still, AC powered POEs are handy for configuring radios on the bench, or like that case where I needed a POE at a customer’s office to power a SIP paging amplifier. From: George Skorup Sent: Monday, January 04, 2016 2:35 AM To: af@afmug.com Subject: Re: [AFMUG] 802.3at POEs It's cheaper at Allied: http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ Yeah, if you're not going to use the Aux port on the 450i, there's no reason to buy a 60W injector. Just keep in mind that this Phihong injector is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt ExtendAir G2. The 450i is awesome with the any pair power setup. The one thing I will say about this thing is that it runs a bit hot and if your hearing is decent, you can definitely hear the switcher whining away. On 1/3/2016 7:29 PM, Ken Hohhof wrote: I'm getting more and more equipment with 802.3at POEs, and I feel like I'm getting raped on the price if I get the POE from the equipment vendor. High price and minimal features. My Exalt G2 radios came with these really nice POEs that have diagnostic LEDs and tabs for wall mounting as well as rubber feet for desktop use. The only downside is they are kind of big, but that's not necessarily bad, that may help prevent overheating. It has LED indications for valid 802.3af and 802.3at signatures, as well as a flashing overload indication. I looked up the part number, expecting them to be expensive, but Digi-Key has a bunch of them in stock and the price is quite reasonable ($38 in single quantity). http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 From the picture, this is also the POE that I should have gotten from CyberData to go with the SIP paging amplifier I bought, but instead they sent a cheaper L-Com POE that has just one dumb LED to show it is getting AC power. So I paid something like $64 for a $31 POE. The $100 Cambium POE for 450i is probably more than 36 watts in case you want to use the AUX port on the AP, but it lacks the nice mounting tabs and diagnostic LEDs. And 36 watts should be more than enough to power just the AP. So I’m inclined to just buy a bunch of the nice Phihong units and use them on everything. Am I missing something?
Re: [AFMUG] 802.3at POEs
It's cheaper at Allied: http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ Yeah, if you're not going to use the Aux port on the 450i, there's no reason to buy a 60W injector. Just keep in mind that this Phihong injector is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt ExtendAir G2. The 450i is awesome with the any pair power setup. The one thing I will say about this thing is that it runs a bit hot and if your hearing is decent, you can definitely hear the switcher whining away. On 1/3/2016 7:29 PM, Ken Hohhof wrote: I'm getting more and more equipment with 802.3at POEs, and I feel like I'm getting raped on the price if I get the POE from the equipment vendor. High price and minimal features. My Exalt G2 radios came with these really nice POEs that have diagnostic LEDs and tabs for wall mounting as well as rubber feet for desktop use. The only downside is they are kind of big, but that's not necessarily bad, that may help prevent overheating. It has LED indications for valid 802.3af and 802.3at signatures, as well as a flashing overload indication. I looked up the part number, expecting them to be expensive, but Digi-Key has a bunch of them in stock and the price is quite reasonable ($38 in single quantity). http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 From the picture, this is also the POE that I should have gotten from CyberData to go with the SIP paging amplifier I bought, but instead they sent a cheaper L-Com POE that has just one dumb LED to show it is getting AC power. So I paid something like $64 for a $31 POE. The $100 Cambium POE for 450i is probably more than 36 watts in case you want to use the AUX port on the AP, but it lacks the nice mounting tabs and diagnostic LEDs. And 36 watts should be more than enough to power just the AP. So I’m inclined to just buy a bunch of the nice Phihong units and use them on everything. Am I missing something?
Re: [AFMUG] 802.3at POEs
We are using netonix switches and collapsing the bunch of bricks In my opinion the WS-12-250-AC . appears to have the best combination (or the DC version). Regards Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net > From: "Ken Hohhof" > To: af@afmug.com > Sent: Sunday, January 3, 2016 8:29:38 PM > Subject: [AFMUG] 802.3at POEs > I'm getting more and more equipment with 802.3at POEs, and I feel like I'm > getting raped on the price if I get the POE from the equipment vendor. High > price and minimal features. > My Exalt G2 radios came with these really nice POEs that have diagnostic LEDs > and tabs for wall mounting as well as rubber feet for desktop use. The only > downside is they are kind of big, but that's not necessarily bad, that may > help > prevent overheating. It has LED indications for valid 802.3af and 802.3at > signatures, as well as a flashing overload indication. > I looked up the part number, expecting them to be expensive, but Digi-Key has > a > bunch of them in stock and the price is quite reasonable ($38 in single > quantity). > http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 > From the picture, this is also the POE that I should have gotten from > CyberData > to go with the SIP paging amplifier I bought, but instead they sent a cheaper > L-Com POE that has just one dumb LED to show it is getting AC power. So I paid > something like $64 for a $31 POE. > The $100 Cambium POE for 450i is probably more than 36 watts in case you want > to > use the AUX port on the AP, but it lacks the nice mounting tabs and diagnostic > LEDs. And 36 watts should be more than enough to power just the AP. > So I’m inclined to just buy a bunch of the nice Phihong units and use them on > everything. Am I missing something?
[AFMUG] 802.3at POEs
I'm getting more and more equipment with 802.3at POEs, and I feel like I'm getting raped on the price if I get the POE from the equipment vendor. High price and minimal features. My Exalt G2 radios came with these really nice POEs that have diagnostic LEDs and tabs for wall mounting as well as rubber feet for desktop use. The only downside is they are kind of big, but that's not necessarily bad, that may help prevent overheating. It has LED indications for valid 802.3af and 802.3at signatures, as well as a flashing overload indication. I looked up the part number, expecting them to be expensive, but Digi-Key has a bunch of them in stock and the price is quite reasonable ($38 in single quantity). http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 >From the picture, this is also the POE that I should have gotten from >CyberData to go with the SIP paging amplifier I bought, but instead they sent >a cheaper L-Com POE that has just one dumb LED to show it is getting AC power. > So I paid something like $64 for a $31 POE. The $100 Cambium POE for 450i is probably more than 36 watts in case you want to use the AUX port on the AP, but it lacks the nice mounting tabs and diagnostic LEDs. And 36 watts should be more than enough to power just the AP. So I’m inclined to just buy a bunch of the nice Phihong units and use them on everything. Am I missing something?
