User's Manual

DIB-500 R4.1 Requirements concerning the operation room
Infrastructure
22 Site Requirements 90DIB500R41SR_FCC02 – 99.1
4.1.3.2 Required space for the uninterruptible power supply/supplies (UPS)
To control voltage fluctuations and to protect the product against voltage failures, the
use of an uninterruptible power supply (UPS) is advisable.
For this reason, apart from the space required for the equipment racks, the space
required for the UPS (according to the specifications of the manufacturer) must also be
added. Also observe the required distances to or from other equipment racks (consum-
ers) as well as cable lengths that result from the connection option between UPS and
consumer.
4.1.4 Requirements for external antenna coupling system – only
FlexibleTx variant
In the FlexibleTx variant, antenna coupling was performed project-specifically according
to the desires and requirements of the network operator via external antenna coupling
systems. In this way, the DIB-500 R4.1, e.g. can be connected to existing antenna cou-
pling systems.
Responsibility for the installation, commissioning and maintenance of the exter-
nal antenna coupling system
The operating company is responsible for the proper installation, commissioning and
maintenance of external antenna coupling systems unless this is an integral part of the
contract concluded with Rohde & Schwarz Professional Mobile Radio. An installer who
may have been entrusted with the installation/commissioning and/or maintenance of the
antenna coupling system is responsible for complying with all the applicable require-
ments and for the metrological tests required afterwards.
The operator is responsible for ensuring that:
| all of the requirements listed in the following are met at any time.
| equipment for overload protection and lightning protection has been provided at the
installation site.
Table 4.2 describes the requirements for external antenna coupling systems. The
requirements for the individual components are described in Table 4.3 .
Table 4.2 Requirements for external antenna coupling systems.
Constituent Property/demand Value/Value range
Isolation between Tx and
Rx antenna
| with common Tx/Rx antenna via duplex filter
| with separate Tx/Rx antennas via antenna coupling and
bandpass filter
≥ 80 dB
Isolation with common Tx/Rx
antenna
Tx bandpass 80 dB
Rx bandpass 80 dB
Antenna coupling 0 dB
Isolation with separate Tx/Rx
antenna
Tx bandpass 55 dB
Rx bandpass 55 dB
Antenna coupling 25 dB