15 June, 2017
INFODRAW R&D
PMRS-420 (v2.0) User Manual v6.2.0.0
12
5
2-5 Antennas (External GSM, GPS and WiFi):
With this antenna setup, the PMRS unit has three external SMA antenna connectors located
on the top side of the unit for External GSM and GPS and Wi-Fi Antennas. Please review the
following pictures to locate them:
GSM
Antenna
GPS
Antenna
Antenna Base
Antenna
1) Twist the GSM Antenna on to the GSM Antenna Base.
2) Connect the GSM and GPS Antennas to their appropriate antenna connectors shown
above.
WARNING:
Before turning the unit ON, please make sure that the GSM Antenna is connected to
its appropriate antenna connector on the unit. If the Nano-SIM card is inserted into
the unit and the unit is turned ON without the GSM antenna being connected, this
may cause harm to the internal cellular modem. Therefore it is recommended to
keep the GSM Antenna connected all the time.
Wi-Fi
GSM
GPS