User's Manual

MDS 05-2873A01, Rev. A MDS i Net 900 Installation and Operation Guide 5
DRAFT 6—8/29/01
3.0 INSTALLATION PLANNING
The installation of the radio is not difficult, but it does require some
planning to ensure station reliability and efficiency. This section pro-
vides tips for selecting an appropriate site, choosing an antenna system,
and reducing the chance of harmful interference.
3.1 General Requirements
There are three main requirements for installing the radio—adequate
and stable primary power, a good antenna system, and the correct inter-
face between the transceiver and the data device.
Figure 4 shows a typical Station Adapter installation. An external direc-
tional antenna is normally used and an RTU/PLC is connected to one of
the serial ports (COM1/COM2). 13.8 Vdc is supplied to the Station
Adapter by an external source.
Invisible place holder
Figure 4. Typical Station Adapter arrangement
(RTU can be connected to any compatible LAN or COM Port)
DIN Rail
Mounting
Brackets
Adaptor for mounting one MDS iNet 900 radio
in a DIN standard equipment rack.
03-xxxxA01
Short-Range
Antenna
Short 1/2-wave antenna. Mounts directly onto
the radio’s coaxial connector. Suitable only for
short-range LANs, such as within a building or
small campus.
03-xxxxA01
Table 1. Accessories (Continued)
LAN PORT
POWER SUPPLY
13.6 VDC @
500 mA (MIN.)
REMOTE
TERMINAL
UNIT
ANTENNA
SYSTEM
LOW-LOSS FEEDLINE
iNet RADIO
TRANSCEIVER