4GMini/4GPlus Cellular Modem
24
7.8 4GMini/4GPlus Compatibility
The 4GMini/4GPlus Cellular Modem are compatible with the following
Campbell Scientific dataloggers.
TABLE 7-1
.
Compatability with contemporary and retired
Campbell Scientific Dataloggers
Contemporary Dataloggers
Retired Dataloggers
CR6 Series
CR10X
CR1000/X
CR3000
CR800 series
CR300 Series
CR200X
7.9 Wiring
Power for the modem can be sourced directly from the datalogger. Connection
to the switched 12V terminal allows the user to control power to the modem
through the datalogger program. In this way, power can be conserved by
limiting the time that the modem is on. For example, the user could choose to
power on the modem only for scheduled data collections or only during certain
hours of the day. When using the switched 12V terminal, be sure to allow time
for the modem to warm up and provision to the network. The required warm up
time can vary, but the recommended minimum is 3 minutes.
TABLE 7-2.Wiring
Colour
Function
Datalogger
Modem
Red
Power source
12V or SW12V
Vin+
Black
Ground
G
Vin-
7.9.1 Modem Connection using the L18663 Null Modem Cable
To connect to a CR300, CR6, CR1000, CR3000, CR800, or CR200X series
RS-232 port, a Null Modem Cable is required (Campbell Scientific L18663).
Connect one end of the Null Modem Cable to the 4GMini/4GPlus cellular
modem and the other to the RS-232 port on the datalogger.
7.9.2 Modem Connection using the SC932A
If connecting to any datalogger’s CS I/O port, an SC932A interface from
Campbell Scientific is required. Connect the supplied black SC12 cable to the
datalogger side of the SC932A interface, followed by the CS I/O port of the