If all three status LEDs, the Radio LED and the Internal Link LED are on continuously and
the Sync LED is off, then this indicates that the Monitor has turned off the radio and is
communicating over the hardwired LAN connection (a cable is plugged into the LAN (RJ-
45) connector on the rear of the Monitor.
There are three status LEDs, one red , one yellow and one green. At power up, all three LEDs
flash on and off a few times, then the red and green LEDs will turn off and the yellow LED
will turn on during self test. If everything is operating properly, the yellow LED will go off
and only the green LED will be on.
If the red status LED turns on during self test, there is a hardware problem with the wireless
assembly (includes a CPU board and a radio card). If a hardware failure is found during
operation the red LED will blink repeatedly.
The Status LEDs are yellow directly after Power On, during initialization. During normal
operation they are green. If a problem occurs during operation the LEDs blink red in a
The radio LED blinks yellow when the wireless assembly is transmitting data packets over its
This LED should be on solidly during normal operation. It indicates that the M3 is
synchronized with an Access Point.
This LED may blink occasionally even when the unit is synchronized to a master.
Internal Link LED
This LED indicates that there is an internal connection to the M3 System Board. This LED
blinks when the wireless assembly sends packets through the internal connection to the
This LED may blink on occasion even if the link between the Ethernet Adapter and the
System Board is defective.
Troubleshooting the Instrument
Part 1 Troubleshooting Checklists