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• The correct interface between the transceiver and the connected
data equipment (correct cable wiring, proper data format, tim-
ing, etc.)
LED Indicators
The LED status indicators
tool and should be checked whenever a problem is suspected.
describes the function of each status LED on the top panel of the radio.
In addition to the top panel LEDs, the
two integrated LEDs. A steady green LED indicates that an Ethernet
link has been established, a flashing green indicates data activity, and
a yellow LED indicates 100 Mbps operation.
LED Name
PWR
LAN
COM1 and
COM2
LINK
05-4669A01, Rev. A
(Figure
Figure 7. LED Indicators
Table 3. LED Status Indicators
Description
• Continuous—Power applied, no problems detected.
• Rapid flash (5 times-per-second)—Fault indication.
• Continuous—Local area network detected.
• Flashing—Data is being transmitted and received.
• Off—LAN not detected or excessive traffic is present.
COM1 indicator shows activity on the Management/
Diagnostic port of the radio. COM2 indicator shows activity
on the payload data port.
When lit, indicates that a communication link is established
with the master station.
7) are an important troubleshooting
ETHERNET/LAN
Invisible place holder
MDS SD4 Startup Guide
Table 3
connector has
9
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