26
SD Series Technical Manual
MDS 05-4846A01, Rev. F
5.0 STEP-BY-STEP INSTALLATION
In most cases, the steps given here are sufficient to install the trans-
ceiver. Refer to “INSTALLATION PLANNING” on Page 17 for addi-
tional details, as required.
1.
Mount the transceiver
. Attach the mounting brackets to the bottom
of the transceiver case (if not already done), using the four 6-32 x
1/4 inch (6 mm) screws supplied. Mounting bracket dimensions are
shown in Figure 12 on Page 18. Secure the brackets to a flat,
grounded surface. (If a grounded surface is not available, run a
separate ground wire to the transceiver—see “Grounding
Considerations” on Page 21.)
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 sta-
tion(s). At Remote sites, aim directional antennas toward the master
unit. 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 using
IP/Ethernet signaling, Serial protocols (RS-232/RS-485), or both.
• If an Ethernet device is to be used, connect it to the front panel
ETHERNET
port to the right of the
PWR
connector.
• If a serial device is to be used, connect it to
COM2
on the front
panel. The radio is hardwired as a DCE device. A straight-through
cable may be used in most applications.
NOTE:
Do not connect the radio’s Ethernet port to a LAN with high traffic levels.
Excessive traffic will overload the port and cause it to be temporarily
disabled. In general, traffic levels above 4 Mbps are likely to cause port
shutdown. (Traffic limit is less than 4 Mbps with packet sizes smaller than
64 bytes.)
4.
Connect primary power.
Input power must be within 10.0 to 30
Vdc and capable of providing at least 2.5 Amperes. (Note that some
older SD4 radios only allow a 10.5 to 16 Vdc range.
Always verify
the voltage range by checking the label above the power input
socket.
)
A power connector with screw-terminals is provided with the unit
(see Figure 15 on Page 21). Strip the wire leads to 6 mm (1/4 inch)
and insert them into the wire ports. Be sure to observe proper
polarity. Tighten the binding screws securely.
The unit is designed for use with negative-ground systems only.
The power supply should be equipped with overload protection
(NEC Class 2 rating), to protect against a short circuit between its
output terminals and the radio’s power connector.
CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
