05-3946A01, Rev. C
TransNET OEM Integration Guide
59
9.2 LED Indicators
The LED indicators on the transceiver board (CR3, CR-4, CR-5 and CR-6)
are an important troubleshooting tool and should be checked whenever a
problem is suspected.
describes the function of each status LED.
Table 24. LED indicator descriptions
LED Name
Description
RXD (CR3)
Receive Data
Serial receive data activity. Payload data from con-
nected device.
TXD (CR4)
Transmit Data
Serial transmit data activity. Payload data to con-
nected device.
DCD (CR5)
Data Carrier Detect
Continuous—Radio is receiving/sending synchroni-
zation frames
On within 10 seconds of power-up under normal
conditions
GP (CR6)
General Purpose
• Continuous—Power is applied to the radio; no
problems detected
• Flashing (5 times-per-second)—Fault indication.
See
• Off—Radio is unpowered or in Sleep mode
RXD
TXD
DCD
GP