Base Station System ND 951
R&S BICK Mobilfunk GmbH
DVers.: 01 / 28.01.99
951_ENG.DOC
Page: 6 / 14
2 Commissioning
2.1 Configuration
For the commissioning of the ND951 no further configurations than the ones described in [Chapter
2.3 Installation and 2.4 Booting] are required. If the ND 951 is commissioned at an MMX via the
internal 4-wire lines, the following has to be taken into consideration:
Certain adjustments in the system configuration have to be carried out for the LIA-ports. These
contain the radio channel number for connecting the transmitter, adjustments for the choice of the
control channel, and for the fall back mode. The system configuration is described in:
Literature 2
Overlay Documentation
ACCESSNET
®
especially
Interface DOC
ACCESSNET
®
CHN-Overlay - 90ACN15EDO26
Each configuration refers to one slot. When connecting receiver/transmitter the radio channel
number, which is to be adjusted at the receiver/transmitter, is linked with the slot at the LIA to which
it is connected.
2.2 Hardware Adjustments (Jumper)
The ND 951 has a wide range of control software, so that it is not necessary to adjust the jumpers
during the installation and commissioning. Exceptions are the mains power supplies PS914DC and
PS928DC that are switch-selectable from either 48V (48-55V) or 60V (56-72V). The switch is
located within the protective cap of the main power supply. It is marked on the main circuit board.
2.3 Installation
2.3.1 Location
Whereever the transmitter modules are located there must be adequate ventilation. Despite its
compact type of construction, installing the system in a closed cabinet without ventilation is not
recommended.
2.3.2 Grounding
The cabinet has to be grounded. The easiest way to do this is linking the ground connection to the
frame.
Attention!
The protective ground conductor of the power supply is not sufficient
protection against overvoltage that can occur, eg. during thunderstorms.
