User's Manual

12 APCD-LM048-1.3
2: MDB1000
Table 1 MDB1000 Signal Strength FOMs
SIGNAL QUALITY
These 5 LEDs have two interpretations, depending on the state of the EUM3006 if the
MODEM LED is on.
1. A rotating pattern of LEDs shows that the EUM3006 is in Auto CCU Discovery mode.
2. When a CCU has been found, the Signal Quality LEDs indicate the figure of merit for
a blend of quality indicators, including the carrier phase error and the signal to noise
ratios for each antenna pattern. The FOM is a value between 0 and 5 and is much
more qualitative that the signal strength. Table 2 shows the meanings of each of the
LED values. LED 0 means that there are no LEDs lit.
LED Meaning Received Signal is at least Received Signal is less than
1 Extremely poor -92 dBm
2 Very Poor -92 dBm -89 dBm
3 Poor -89 dBm -86 dBm
4 Marginal -86 dBm -83 dBm
5 Okay -83 dBm -80 dBm
6 Good -80 dBm -77 dBm
7 Very Good -77 dBm -74 dBm
8 Excellent -74 dBm