Connecting Lte Antennas - Siemens RUGGEDCOM RX1400 Installation Manual

RUGGEDCOM RX1400
Installation Guide
Section 2.6.2

Connecting LTE Antennas

Install a single 4G LTE (Long Term Evolution) antenna for Single-Input Single-Output (SISO) or dual antennas for
Multiple-Input Multiple-Output (MIMO).
To install an LTE antenna, do the following:
WARNING!
Radiation hazard – risk of Radio Frequency (RF) exposure. Antennas must be placed at a distance of
at least 35 cm (13.8 in) from all persons during normal operation. The antennas used for this product
must not be located or operating in conjunction with any other antenna or transmitter, except in
accordance with FCC multi-transmitter evaluation procedures.
CAUTION!
Configuration hazard – risk of reduced performance. Each antenna and connecting cable must have a
nominal impedance of 50 Ω with a return loss of better than 10 dB across each frequency band. If the
nominal impedance is different, Radio Frequency (RF) performance will be reduced.
IMPORTANT!
The antenna installation must be as per Article 810 of the National Electric Code (NEC). Specifically, the
grounding conductor must not be less than 10 AWG (Cu). The scheme should be either:
• In accordance with UL 96 and 96A Lightning Protection Components and Installation Requirements
for Lightning Protection Systems (LPS)
• Tested in accordance with UL 50 and UL 497
IMPORTANT!
A Radio Frequency (RF) site survey is recommended prior to any installation to help determine the best
location for the LTE antennas. For assistance, contact a Siemens Sales representative.
IMPORTANT!
The cellular modem supports SISO (Single Input Single Output) and MIMO (Multiple Input Multiple
Output) modes. At minimum, a single antenna connected to the LTE MAIN port is required for SISO
mode and to support lower generation wireless standards, such as GSM or EDGE. A separate diversity
(secondary) antenna is required for MIMO performance.
IMPORTANT!
For mobile and fixed operating configurations, in accordance with R&TTE Directive 1999/5/EC, the
maximum antenna gain is 3 dBi for 900 MHz, 1800 MHz, 2100 MHz and 2600 MHz.
IMPORTANT!
For mobile and fixed operating configurations, in accordance with FCC 47 CFR, section 2.1091, the
antenna gain, including cable loss must not exceed:
• 6.0 dBi at 700 MHz
• 3.0 dBi at 800/850 MHz
• 6.0 dBi at 1700 MHz
• 3.0 dBi at 1900 MHz
Connecting LTE Antennas
Chapter 2
Installing the Device
15