Campbell CR310 User Manual

Signal strength units are –dBm; –70 is a stronger signal than –100.
Table 12-1: Signal strength
Strength estimate
RSSI (3G)
dBm
RSRP (4G)
dBm
Excellent -70 or greater -90 or greater
Good -71 to -85 -91 to -105
Fair -86 to -100 -106 to -115
Poor less than -100 less than -115
12.4.2 Signal quality
Signal quality shows how much interference there is between the cellular tower and CR300-CELL,
or how noisy a band is. Cellular signal noise comes from reflections, ghosting and other
interference. Better signal quality is an indicator of more successful communications during
precipitation events such as rain and snow.
For 3G networks, signal quality is ECIO (Energy to Interference Ratio). For 4G, this is RSRQ
(Reference Signal Received Quality).
Signal quality units are –dBm; 0 is a better signal than –10.
Table 12-2: Signal quality
Quality estimate
ECIO(3G)
dBm
RSRQ(4G)
dBm
Excellent 0 to -6 >-9
Good -7 to -10 -9 to-12
Fair to poor -11 to -20 -13 or less
12. Cellular communications option51

Campbell CR310 Specifications

General

Brand	Campbell
Model	CR310
Category	Data Loggers
Language	English