ZyAIR B-420 Wireless LAN Ethernet Adapter and Bridge

Bridge

A Bridge link LED turns steady on green when your ZyAIR acts as a bridge, establishing a wireless link to another AP.

Power over Ethernet (PoE)

Power over Ethernet (PoE) is the ability to provide power to your ZyAIR via an 8-pin CAT 5 Ethernet cable, eliminating the need for a nearby power source. An injector or PoE device (not included) is also needed to supply the Ethernet cable with power. This feature allows increased flexibility in the locating of your ZyAIR. You only need to connect the external power adaptor if you are not using PoE. If you simultaneously use both PoE and the external power adaptor, the ZyAIR will draw power from the PoE connection only. Refer to the appendix for more information about PoE.

Figure 1-1 PoE Installation Example

802.11b Wireless LAN Standard

ZyAIR products containing the letter “B” in the model name, such as ZyAIR B-1000, ZyAIR B-1020, comply with the 802.11b wireless standard.

The 802.11b data rate and corresponding modulation techniques are as follows. The modulation technique defines how bits are encoded onto radio waves.

 

802.11b

 

 

Data Rate (Mbps)

Modulation

 

 

1

DBPSK (Differential Binary Phase Shift Keyed)

 

 

2

DQPSK (Differential Quadrature Phase Shift Keying)

 

 

5.5 / 11

CCK (Complementary Code Keying)

 

 

1-2

Getting to Know Your ZyAIR