Siemens RUGGEDCOM RX1400 Installation Manual page 26

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 imped-
ance is different, Radio Frequency (RF) performance will be reduced.
NOTICE
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:
•
•
NOTICE
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.
NOTICE
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 stan-
dards, such as GSM or EDGE. A separate diversity (secondary) antenna is required for
MIMO performance.
NOTICE
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.
NOTICE
For mobile and fixed operating configurations, in accordance with FCC 47 CFR, sec-
tion 2.1091, the antenna gain, including cable loss must not exceed:
•
•
•
•
Under no conditions may an antenna gain be used that would exceed the ERP and/or
EIRP power limits specified in FCC 47 CFR Parts 22, 24, 27 and 90.
Note
For technical specifications, refer to
RUGGEDCOM RX1400
Installation Manual, 09/2019, C79000-G8976-1103-13
CAUTION
In accordance with UL 96 and 96A Lightning Protection Components and Instal-
lation Requirements for Lightning Protection Systems (LPS)
Tested in accordance with UL 50 and UL 497
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
2.5.3 Connecting LTE Antennas
"Cellular Modem Specifications (Page
Installing the Device
36)".
17