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DNT900DK (R) 11/3/14 Page 2 of 4 www.murata.com
Development Kit Assembly:
1. Figure 1 shows a DNT900P radio installed on an interface board, a U.FL coaxial jumper cable, and a 2 dBi dipole
antenna. Observe ESD precautions when handling the kit circuit boards.
2. As shown in Figure 2, confirm each DNT900P is correctly plugged into an interface board, with the radio oriented so
that its U.FL connector is next to the U.FL connector on the interface board. Check each radio’s alignment in the
socket on the interface board. No pins should be hanging out over the ends of the connector.
3. Install the 2 dBi dipole antennas on each interface board.
4. Confirm there is a jumper on pins J14, as shown in Figure 3. The interface boards can now be powered by the 9 V
wall-plug power supplies (the interface boards can also be run for a short time from the 9 V batteries for range testing,
etc.).
5. As shown in Figure 4, there are three serial connectors on the interface boards. The RJ-45 connector provides a high-
speed RS232 interface to the DNT900P’s main serial port. The USB connector provides an optional interface to the
radio’s main serial port. The RJ-11 connector provides a high speed RS232 interface to the radio’s diagnostic port.
6. The DNT Demo utility program runs on the radio’s main port. Many desktop PCs have a built-in serial port capable of
operation at 9.6 kb/s. The kit runs satisfactorily at the 9.6 kb/s data rate, but not at its fastest throughput. Use the RJ-
45/DB-9F cable assemblies for serial port operation. Connect the Base interface board to the PC. Labels on the
bottom of the interface boards specify Base or Remote. Then power the Base and the Remote with the supplied wall-
plug power supplies.
a Optionally, the DNT Demo can be run from the USB port. Plugging in the USB cable automatically switches oper-
ation to the USB connector. The USB interface is based on an FT232RL serial-to-USB converter IC manufactured
by FTDI. The FT232RL driver files are located in the i386 and AMD64 folders on the CD, and the latest version of
the drivers can downloaded from the FTDI website, www.ftdichip.com. The drivers create a virtual COM port on
the PC. Power the Base using one of the supplied wall-plug power supplies. Next connect the Base to the PC with
a USB cable. The PC will find the new USB hardware and open a driver installation dialog box. Enter the letter of
the drive holding the kit CD and click Continue. The installation dialog will run twice to complete the driver installa-
tion. Next power the Remote using the other wall-plug power supply.
