Lantronix MatchPort b/g, Integration Manual, Page: 12 / 29

2: Description and Specifications
MatchPort b/g Integration Guide 12
Figure 2-6. Separate RS-422 Transceivers for 2-Wire and 4-Wire Setups
WLAN Input/Output
The following table displays the WLAN LED functions.
Table 2-4. WLAN Signals
Pin Number Pin Function
22 WLAN LED
MatchPort b/g
Output WLAN LED can be used to drive an external LED to monitor the activity of the
radio. The output is active when the receiver and or transmitter are on. The output is
active low and can drive an LED with 10mA. The LED shall be connected between
the output and 3.3V with a series resistor of 220 ohm.
Note: If you have questions or concerns, please contact Lantronix Technical
Support at (800) 422-7055 (US only) or (949) 453-7198.
If power management is disabled, and when the unit is associated with a network, the
receiver will always be on and thus any LED output, that indicates the receiver or
transmitter being on will be active continuously.