tion.
• The density of materials also affects antennas. Place them away from any type of wall, metal screens, mirrors, etc.
• Do not place the antenna near columns, which may throw shadows and reduce the coverage area.
• Keep the antenna away from metal pipes (such as those used for plumbing, air-conditioning, etc.).
• Please bear in mind that other wireless devices (such as telephones, microwaves, etc.) can temporarily interfere
with the quality of the radio signal.
• We do not recommend installing antennas near, or between, racks containing communication devices, computers,
etc. Use an extension cable and place the device outside.
The following recommendations are applicable to all wireless devices:
• Do not touch or move the antenna while the device is transmitting or receiving.
• When the antenna is transmitting, do not touch any equipment that contains devices that radiate very close to, or
touching, any exposed part of the body (particularly face and eyes).
• Do not install the device in areas where the atmosphere is potentially explosive.
• Wireless devices can cause interferences in other devices. Do not use the device in areas where medical equip-
ment is installed.
3.7.4 Connecting the GPS antenna
The RS1800 series device has an SMA connector to connect a passive GPS antenna (on -4G models).
The cable used to connect the antennas must be valid for radio frequency (RF) signal communications of up to 1.5
GHz and impedances of 50 Ohms. Please note that the quality and length of an antenna cable can affect the quality
of the RF signal (both transmitted and received). This, in turn, will affect the device's coverage and data exchange
rates.
The following image shows the position of the GPS antenna connector.
Fig. 15:
GPS antenna connector
Note
The GPS will not work properly unless you install a valid SIM card.
Note
The device is shipped without a GPS antenna. Please, contact your dealer for a list of recommended
GPS antennas.
For further information on GPS configuration, please see the following manual: Teldat Dm812-I GPS.
3.7.5 Wireless LAN internal antennas
The RS1800 series has two integrated antennas for a Wireless LAN module covering both the 2.4 GHz and 5 GHz
bands.
The WLAN module is internal for the RS1800w.
Teldat S.A.
3 Components and Power Supply
RS1800 series
17
