The Enable-IT 828A – A three port Gigabit PoE switch delivers full wire speed, jumbo frame supported Gigabit Ethernet over 4-pair Category 5e or higher spec rated wiring. This 828A unit can be used with an 828P Gigabit PoE Extender kit to reach up to 2,000ft or 1,828m.
The 828A unit works fine in the lab for the out of the box test, but when I placed them in the field all I get on the 828A unit is a Green CO Power and Amber CO LAN Activity light.
The issue clearly is the wiring between the 828A Extender unit. Check your cabling and connections and if you may have bent any pins in the RJ-45 connections on the 828A Extender unit.
We highly recommend a quick test to ensure the working order of you 828A unit.
To do this, please use one of the Ethernet patch cords provided and attach each end to the LINE port on the 828A Extender units. Next use another Ethernet patch cord to attach a LAN device to the Data/PoE – OUT port of the 828A Extender Unit.
Next step is to attach another Ethernet patch cord to the Data/PoE – IN port of the 828A Extender unit. Final step is to apply Power to the 828A Extender unit unit.
After removing the Enable-IT 828A Ethernet Extender Kit from the box, and performing the Out Of The Box Testing, all that remains to install the unit on-site is to mount the unit, attach the LAN cabling to your Devices and power up.
LED indicators will provide visual operational status of the 828A units.
CPE Sync / Act – Indicates remote LAN is visible and connected with activity.
If this LED fails to light, the wiring between the 828A and your end device is incorrect, the wiring may have a short or the distance from the 828A unit through the your remote LAN device exceeds 900ft or 274m.
LAN Act – Indicates local LAN is visible and connected with activity.
Power – should be lit when 5v adapter is connected and powered
This confirms proper operation of the units.
For installation at your desired location, keep in mind the following:
• Total distance limitation of 400ft or 120m out each port of the 828A unit.
• 4-pair CAT 5e .24 AWG twisted pair or better cabling is required for Gigabit throughput.
• Wire pairs used must be straight through, no taps/connection points.
DO NOT INSERT THE BLANK RJ-45 HEADS PROVIDED INTO ANY PORTS BEFORE CRIMPING
– OTHERWISE YOU WILL RENDER THE PORT USELESS – BENT PINS
Will the 828A work with any manufacturer’s wireless AP?
Yes, if using a IEEE 802.3af standard PoE injector or PoE midspan switch. Cisco PoE switches do not work as they do not startup in a 802.3af mode by default and can’t configure itself for Long Reach Ethernet.
We recommend using a standalone PoE Injector when in doubt.
IEEE 802.3af standard passes power over Ethernet on pins 4,5,7 & 8. Using a straight through CAT5e cable for PoE – Pins 1,2,3, and 6 carry the data while pins 4,5,7, and 8 carry power
PoE injectors can come in(24,48 and 56V) variations. PoE equipment on the other hand can be any voltage up to 56V. Each PoE Equipment mfg has a built in regulator that takes whatever voltage coming out of a PoE/Data cable and conditions it down to what it needs.
The 828A Unit. Voltage drops over distance using wires. At 200M, you lose maybe 4 or 6 volts. At 48VDC, that leaves you with 42 volts. You can determine the amount of voltage drop over a distance by finding the resistance of the cable for a specific temperature (given in ohms/1000ft) from the cable manufacturer or electrical wholesaler. If you know the largest amount of current that will flow in the cable, when use the formula: Vdrop = Current X Distance (Ft) X 2 X Ohms per 1000Ft.
As a rule of thumb you will loose 6V per every 100? – 200? of wiring, depending on the gauge. Lower power also means more amperage means more heat and perhaps issues with the 24 gauge wires in CAT5. You may need to use 18 gauge wiring. For all intensive purposes anything greater than 400? use a 48V POE.