Led Indicators - GE MDS SD Series Technical Manual

Difficulty
Ethernet port shuts
down.
No communication
to user interface
(serial system).
BER is too high.
Data throughput is
spotty.
Latency is too high.
Unit won't wake up
from Sleep Mode.
Password lost or
forgotten
Alarm message
"RF Output Out of
Range"
Transmitter keys
when using terminal
communications
program.

7.1 LED Indicators

The LED status indicators are an important troubleshooting aid, and should be checked whenever
a problem is suspected. Table 10 on Page 29 describes the function of each status LED and their
normal indications.
84
Table 14. Troubleshooting Guide
Recommended System Checks
a. Excessive data throughput. Do not connect radio to a LAN with
high traffic levels.
b. Auto Power Save is shutting the port down. Disable Auto
Power Save on Ethernet Port Configuration screen. (As of
this manual's release date, this must be performed using a
console terminal session. Device Manager access is planned
for a future release.) Note that access to the unit via Ethernet
will not be possible if the port is currently shut down.
About Auto Power Save: This feature, enabled by default,
shuts down the Ethernet port if no connection is detected for
approximately 10 seconds, such as when a cable is
unplugged. Ethernet communications will resume when the
connection is restored. If your system experiences Ethernet
connection difficulties in operation, the Auto Power Save
feature may be disabled. A port that is shut down may also be
restored by cycling the radio's DC power input.
a. Connect terminal emulator to COM1 port, cycle power, and
press the Enter key within 10 seconds to obtain Login prompt.
a. If in packet mode, check the Packet Settings screen for
proper configuration.
b. If in serial mode, check the COM1/COM2 Port settings screen
for proper configuration.
a. Adjust packet mode settings.
a. Disconnect the device connected to COM2, and disable Sleep
Mode on the Device Settings Screen.
b. Verify that the connected device is outputting the required 0
VDC to 5 VDC to control sleep mode on Pin 4 of COM2.
Correct as necessary.
c. Re-enable Sleep Mode on Device Settings Screen, re-
connect device to COM2, and check for proper operation.
Contact GE MDS for password reset authorization code. Proof of
authorized user required.
No load on Antenna connector or poor/shorted/open load. Check
condition of antenna cable, connectors, and antenna system.
Many terminal programs raise the RTS line by default. Keying
can be avoided by setting the transceiver's RTSkey parameter to
OFF (Configuration>>Radio>>Advanced Settings)
SD Series Technical Manual MDS 05-4846A01, Rev. I