Led Configuration - Measurement Computing WLS-IFC User Manual

WLS-IFC User's Guide

LED configuration

Power
Received Signal Strength Indicator
(RSSI)
USB activity
Transmit
Receive
Received
Signal
Strength
Indicator
Table 9. LED configuration
The WLS-IFC is connected to a computer or external USB hub
3 green LED bar graph. The LEDs will turn on when receiving a wireless
message and stay on for approximately 1 second after the end of the message.
They indicate the amount of fade margin present in an active wireless link. Fade
margin is defined as the difference between the incoming signal strength and the
device's receiver sensitivity.
 3 LEDs on: Very strong signal (> 30 dB fade margin)
 2 LEDs on: Strong signal (> 20 dB fade margin)
 1 LED on: Moderate signal (> 10 dB fade margin)
 0 LEDs on: Weak signal (< 10 dB fade margin)
Green LED – indicates activity over the USB connection
Yellow LED – indicates transmitting data over the wireless link
Red LED – indicates receiving data over the wireless link
Power
15
Specifications
USB
Transmit
Receive