FUTABA FDL01TU, Instruction Manual

Page: 21 / 83

7
The FDL01TU is designed to be used inside the room. In case of
using it outdoor, be sure to use it within the extent limited by the
environmental specification, and check the ambient temperature and
the state of water-proof.
2.2
Communication Cable Connection
Use the serial communication cable prepared by Futaba to connect the FDL01TU modem
to the external terminal equipment. For the connection of the modem, see p.22
P
IN
A
SSIGNMENT
.
The signal level of the FDL01TU is CMOS. If the interface of the equipment to be
connected is RS232C or RS485, the level conversion circuit is required. For the example of
the level conversion circuit, see p.64
C
ONVERSION
C
IRCUIT
.
Figure 2–3: Connection of Communication Cable
Ensure that the FDL01TU modem power and the power to the
equipment to be controlled is turned off before connecting or
disconnecting the cable between them. This will help prevent
accidental damage to the system and unexpected operation and/or
injury.
In addition to this manual, read the operation manual of a PC
(Personal Computer) and PLC (Programmable Logic Controller) to
be connected.
2.3
Antenna Connection
At least one antenna must be connected to Antenna Connector A on each FDL01TU
modem in use. In the environment where multipath fading exists with reliable
communication requirements, a second antenna can be installed to Antenna Connector B
for the
diversity receive function to improve reception performance.
2.3.1 Single Antenna Setup
Always use Antenna Connector A when installing a single antenna.
Refer to the figures below for details about the actual mounting and connecting methods.
CAUTION
WARNING
WARNING