User's Manual

MDS 05-3447A01, Rev. F MDS 1710A/C and MDS 2710A/C/D 9
RTU—Remote Terminal Unit. A data collection device installed at a
remote radio site. An internal RTU simulator is provided with the trans-
ceiver to isolate faults to either the external RTU or the radio.
SCADA—Supervisory Control And Data Acquisition. An overall term
for the functions commonly provided through an MAS radio system.
Standing Wave Ratio—See SWR.
Supervisory Control And Data Acquisition—See SCADA.
SWR—Standing Wave Ratio. A parameter related to the ratio between
forward transmitter power and the reflected power from the antenna
system. As a general rule, reflected power should not exceed 10% of the
forward power (≈ 2:1 SWR).
3.0 INSTALLATION
There are three main requirements for installing the transceiver—ade-
quate and stable primary power, a good antenna system, and the correct
data connections between the transceiver and the data device.
Figure 5
shows a typical remote station arrangement.
Invisible place holder
Figure 5. Typical Remote Station Arrangement
13.8 VDC
POWER
CABLE
13.8 VDC
2.5 A (Minimum)
POWER SUPPLY
REMOTE TERMINAL
UNIT
ANTENNA SYSTEM
LOW-LOSS FEEDLINE
RADIO
TRANSCEIVER