User's Manual

05-4819A01, Rev. 08 LCT 450 Installation/Operation Guide 21
LED Indicators
The LED status indicators (Figure 7) are an important troubleshooting
aid and should be checked whenever a problem is suspected. Table 2
describes the function of each status LED on the front panel of the
radio.
Invisible place holder
Figure 7. LED Indicators
Additional LED indications—for trouble conditions:
TXD/RXD
lit: High Standing Wave Ratio (SWR). Check antenna
system.
PWR lamp flashing: Over temperature (Observe duty cycle, ensure
adequate ventilation)
Event Codes
When an alarm condition exists, the transceiver creates a code that can
be read on a connected terminal. These codes can be helpful in
resolving many system difficulties. Refer to Table 3 (Page 22) for a
definition of the event codes.
Table 2. LED Status Indicators
LED Name Description
PWR • Continuous—Power applied, no problems detected.
• Rapid flash (5 times-per-second)—Alarm indication.
TXD Unit is transmitting.
RXD Unit ready to receive data (not transmitting).
DCD Message is being received.
PWR
DCD
TXD
RXD