Changes between Version 11 and Version 12 of poe


Ignore:
Timestamp:
10/01/2018 02:28:00 PM (3 weeks ago)
Author:
Tim Harvey
Comment:

added note about TP-LINK TL-PoE150S compatibility with Ventana/Laguna?

Legend:

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  • poe

    v11 v12  
    3939||          || GW2382  || Passive^^^3^^^ (up to 42V) || Jumper^^^2^^^ ||
    40401. Jumper W1 selects passive (install) vs 802.3af (remove) voltage range
    41 2. Jumper W1 selects passive (ext) vs 802.3af (std) voltage range
     412. Jumper W1 selects passive (ext) vs 802.3af (std) voltage range. See [#emulation below] for details on the 802.3af emulation
    42423. Half-rectified or Passive PoE on Gateworks boards assumes positive on blue pair, negative on brown pair. A cross-over cable can be used for devices using the opposite polarity
    4343
     44
    4445== Passive PoE
    45 
    4646Most Gateworks products support what is typically referred to as 'Passive PoE' as power is applied to the same pins defined in 802.3af however the intelligent signalling/detection is not present.  We do this because 802.3af DC range is only 37-60V and our customers typically want lower ranges.
    4747
     
    5555 - Newport GW640x/GW630x/GW620x
    5656
     57
     58[=#emulation]
    5759== Emulated 802.3af ==
    58 Originally, true 802.3af was costly and difficult to co-exist with passive PoE, so Gateworks designed a circuit that emulated it by providing the 'signature' needed to make an 802.3af PoE compliant switch enable power.
     60Originally, true 802.3af was costly and difficult to co-exist with passive PoE, so Gateworks designed a circuit that emulated it by providing the 'signature' needed to make an 802.3af PoE compliant switch enable power. The circuit used on the boards that use this emulation provides a 'class 0' signature but does not provide a 2-event class and PoE signature which may make it fail to turn-on  certain 802.3af power adapters.
    5961
    6062While the 802.3 spec calls out the power pins explicitly it does not call out polarity because it also requires full rectification (which makes polarity a moot point). This created the fact that some products use one polarity and others use opposite with regards to + and - voltage rails (see here http://pinouts.ru/Net/poe_pinout.shtml). Some of our emulated 802.3af products do not have this full rectification for space reasons which can make them in-compatible with PoE on some devices without the use of a 'cross-over cable'.
     
    9193|| [http://us.dlink.com/products/business-solutions/dgs-1008p/ D-Link DGS-1008P 8port GigE Switch] || 802.3af || Opposite Polarity^^^1^^^ ||
    9294|| [https://www.cisco.com/c/en/us/support/switches/sg-100d-08-8-port-gigabit-switch/model.html Cisco SG100D-08P 8port GigE Switch] || 802.3af || Opposite Polarity^^^1^^^ ||
    93 || [http://il.zyxel.com/us/en/products_services/xgs1910_gs1910_series.shtml?t=p !ZyXel GS1910-24HP 24port GigE Switch] || 802.3af || Opposite Polarity^^^1^^^ ||
     95|| [http://il.zyxel.com/us/en/products_services/xgs1910_gs1910_series.shtml?t=p ZyXel GS1910-24HP 24port GigE Switch] || 802.3af || Opposite Polarity^^^1^^^ ||
    9496|| ||
    9597||[https://www.amazon.com/gp/product/B071D2ST49/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1 ANVISION 48V 0.8A 802.3af/at Gigabit PoE Injector] || 802.3af/at || integrated power supply ||
    96 ||[https://www.tp-link.com/us/products/details/cat-43_TL-POE150S.html TP-LINK TL-PoE150S Gigabit 802.3af PoE Injector 48V 0.35A] || 802.3af || external supply provided ||
     98||[https://www.tp-link.com/us/products/details/cat-43_TL-POE150S.html TP-LINK TL-PoE150S Gigabit 802.3af PoE Injector 48V 0.35A] || 802.3af || external supply provided, not compatible with emulated 802.3af^^^2^^^ ||
    9799||[http://brashnetworks.com/product/brash-networks-bn-pe901g-high-power-802-3at-power-over-ethernet-poe-gigabit-power-injector/ Brash Networks BN-PE901G Gigabit 52V 30W 802.3at Poe Gigabit Power Injector]|| 802.3af/at || integrated power supply ||
    98100|| [https://shop.gateworks.com/index.php?route=product/product&path=70_73&product_id=35 GW10027 24V 0.8A Passive PoE Power Supply] || Passive || integrated power supply ||
     
    102104|| [https://shop.gateworks.com/index.php?route=product/product&path=70_73&product_id=17 GW10054 Gigabit Ethernet Passive POE Injector] || Passive || requires external power supply ||
    103105 1. Requires cross-over cable if using with a Gateworks board on a port that has half-rectified passive PoE (ie Ventana)
    104 
     106 2. This product is not compatible with the [#emulated emulated 802.3af] used on certain Ventana and Laguna products