05-6358A01, Rev. 02 (FCC)
MDS SD Series Quick Start Guide (x710 Mode)
1
MDS SD1 Transceiver
Quick Start Guide (x710 Mode)
The MDS SD1 transceiver (
Figure 1
) is a software-configurable,
industrial solution for use in wireless telemetry applications. The
unit operates in the 150-174 MHz frequency band.
The radio interfaces with a variety of data control equipment such
as remote terminal units (RTUs), programmable logic controllers
(PLCs), flow computers, and similar devices. Data interface con-
nections may be made by both serial (RS-232/485) and limited
Ethernet protocols.
Invisible
place
holder
Figure 1. MDS SD1 Data Transceiver
There are three main requirements for installing the transceiver:
• Adequate and stable primary power
• An efficient and properly installed antenna system
• Correct interface connections between the transceiver and
the data device.
Figure 2
shows a typical installation of the radio.
NOTE:
Retrofit Kits are available to simplify installation at former
MDS x710 digital and analog sites. Consult the
Refer-
ence Manual
for ordering details.
2.1
Installation Steps
In most cases, the steps given here are sufficient to install the
transceiver. Refer to the
Reference Manual
for additional details,
as required.
1.
Mount the transceiver
using the brackets supplied. Attach
the brackets to the bottom of the transceiver case (if not
already attached), using the four 6-32 x 1/4 inch (6 mm)
screws supplied. Mounting bracket dimensions are shown in
Figure 3
. If DIN Rail mounting brackets are to be used, consult
the
Reference Manual
.
NOTE:
To prevent moisture from entering the radio, do not mount
the case with the cable connectors pointing up. Also,
dress all cables to prevent moisture from running along
the cables and into the radio.
CAUTION:
Using screws longer than 1/4 inch (6 mm) to attach the
brackets to the radio may cause internal damage. Use
only the screws supplied.
Figure 2. Typical Installation (Remote Site Shown)
Figure 3. Mounting Bracket Dimensions
2.
Install the antenna and feedline.
The antenna used with the
radio must be designed to operate in the radio’s frequency
band, and be mounted in a location providing a clear path to
the associated station(s). At Remote sites, aim directional
antennas toward the Master Station. Low loss coaxial feedline
should be used and it should be kept as short as possible.
3.
Connect the data equipment.
Connection may be made to
the COM port using Serial protocols (RS-232/RS-485).
• Connect your data equipment to the appropriate serial port
on the front panel. (Typically, COM2 is used for connecting
data equipment, and COM1 is used for management of the
radio. Other arrangements are possible. Refer to the
Refer-
ence Manual
for details.) In all cases, the radio is hardwired
as a DCE device. A straight-thru cable may be used for most
applications.
4.
Connect primary power.
Input power must be 10.0 to 30 Vdc
and capable of providing at least 2.5 Amperes. A power con-
nector with screw-terminals is provided with the unit (see
1.0
INTRODUCTION
2.0
INSTALLATION
ANTENNA
CONNECTOR (TNC)
SERIAL DATA
CONNECTORS (DB-9)
DC INPUT
POWER
LED INDICATOR
PANEL
ETHERNET
CONNECTOR (RJ-45)
COM1 used for radio management
DC POWER SUPPLY
Negative Ground Only
TRANSCEIVER
LOW
-LOSS FEEDLINE
ANTENNA SYSTEM
SERIAL
Master Stations typically use
omni-directional antenna
TO
DATA TELEMETRY
DEVICE
7.25˝ (16.99 cm)
2.7
5
˝ (7
cm)
