Product Description - Model POEPASS-04
AIR802® has developed passive Power-over-Ethernet (PoE) kits or sets with various size DC connectors. This device provides a low cost solution for delivering power over the network cable. This scheme allows power to be carried on 10/100 networks over the spare, unused pairs of a CAT5, CAT5E, or CAT6 Ethernet network cable. The source power could be the power supply that came with the wireless access point, IP video surveillance camera, etc. or it might be another power supply.
This set contains a very cost effective injector and breakout or splitter component. The injector inserts the DC voltage at the source location into the 4.8 mm x 1.7 mm injector plug which fits Panasonic brand products. The DC voltage is then carried over the spare pairs of the 10BASE-T or 100BASE-T network cable. The breakout or splitter extracts the DC voltage from the network cable onto the 4.8 mm x 1.7 mm splitter jack. AIR802 offers this product in two other DC connector sizes (5.5 mm x 2.1 mm) and (5.5 mm x 2.5 mm). If you have an application requiring another size, contact our office.
As an professional engineering company, we can't specify any precise operating distance. Determining the distance in any given scenario is an electrical calculation that would require knowledge of the wire gauge being used, the input voltage and current. However it is possible to achieve up to the full length of an Ethernet network cable at 100 meters (328 feet), if for example the input voltage and current was high enough to accommodate the voltage drop. The input voltage drops over the distance of a wire and will be less at the output.
Basic Power-over-Ethernet (PoE) Information
Power-over-Ethernet (PoE) is commonplace and very useful allowing DC power voltage to be carried through a CAT5, CAT5E, or CAT6 type cable. This eliminates the need for an AC power outlet nearby any equipment being installed in ceilings, on outside walls or other locations, where power outlets are not conveniently installed. Under the right conditions, with standard PoE injectors, power may be carried over the 100 meter (328 feet) distance limitation of a single network cable run.
There are variances in PoE technology. One is what AIR802® refers to as pre-802.3af compliant PoE or passive PoE. When we say passive it means that voltage will immediately begin flowing between the power source and powered device. This is in contrast to the IEEE 802.3af or 802.3at standards, which will place a 25 ohm resistance across the pairs at the powered device and when the power source senses this it will begin providing voltage. The spare pairs (pins 4,5,7 and 8) of an Ethernet network cable are used in passive PoE. In 802.3af/at devices the pairs used depends on whether it is Mode or Alternative A or Mode or Alternative B, with Mode B using pins 4,5,7 and 8.
Applications
• IP Telephones
• WLAN Access Points
• Bluetooth Access Points
• IP Surveillance Cameras
• Data Collection, Time and Attendance Control
• HVAC and Lighting Controls
• Badge/Card Readers
• RFID
• 802.11 WLAN Bridges and CPE
• 802.16 WiMAX
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Injector Plug
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4.8mm x 1.7mm
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Splitter Jack
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4.8mm x 1.7mm
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Overall Length
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19 cm (7.5 inches).
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Network Type
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10BASE-T, 100BASE-T
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Data Pins
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1&2 and 3&6
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Power Pins
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4&5 and 7&8
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Input Voltage Max
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Up to 60VDC
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Output Voltage Max |
Up to 60VDC |
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Operating Temperature |
-40°C ~ 60°C (-40°F ~ 140°F) |
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Pin |
Input |
Output |
Pin |
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1 |
Tx (+) |
Tx (+) |
1 |
|
2 |
Tx (-) |
Tx (-) |
2 |
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3 |
Rx (+) |
Rx (+) |
3 |
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4 |
N.C. |
+48V |
4 |
|
5 |
N.C. |
+48V |
5 |
|
6 |
Rx (-) |
Rx (-) |
6 |
|
7 |
GND |
GND |
7 |
|
8 |
GND |
GND |
8 |
Terminology Note: Due to differences in terminology this product may be referred to as: passive poe, passive power-over-ethernet, mid-span poe, mid-span power over ethernet, midspan poe, mode A or mode B, non-802.3af, or pre-802.3af.
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