Led Indicator Lights; Signal Strength And Quality - Campbell CELL200 Series Product Manual

9.2 LED indicator lights

When your CELL200-series module is connected to power and an antenna, there is a specific
pattern to the lights to indicate its operation mode as described in
Table 9-1: LED Indicator Lights
Flashes every 8 seconds
Network when authenticated with
cellular network
Flashes every 8 seconds to
Signal indicate good signal
strength
Flashes every 8 seconds to
Power/Traffic indicate all is good in
network

9.3 Signal strength and quality

Both signal strength and quality contribute to successful cellular data communications. The
factors that influence signal strength and quality include but are not limited to:
proximity to the cellular tower
l
tower load
l
competing signals
l
physical barriers (mountains, buildings, vegetation)
l
weather
l
Because signal strength and quality can vary due to many factors, they may not give a true
indication of communications performance or range. However, they can be useful for activities
such as:
determining the optimal direction to aim a Yagi antenna
l
determining the effects of antenna height and location
l
trying alternate Yagi antenna (reflective) paths
l
seeing the effect of vegetation and weather over time
l
Green
Flashes with traffic
to/from internal cell
modem
Flashes every 8
seconds to indicate
fair signal strength
Flashes with traffic on
RS-232 or CS I/O
LED Indicator
Blue
Flashes every 8 seconds
when issue with
network/settings
Flashes every 8 seconds to
indicate marginal or no
signal strength
Used to let user know it is in
low power state (only LED
flashing)
CELL200-Series 4G LTE Cellular
Lights (p. 60).
Red
Module 60