User`s manual

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USB-TO-SERIAL CONVERTERS
USB-to-Serial converters are used for
 interfacing serial receivers like the ICOM R8500 or AOR AR5000
 connecting NMEA based devices such as a GPS receiver or a compass
 connecting any serial device to the DDF7001
The DDF7001 supports up to a 4 port Prolific or FTDI chip set based USB-to-serial converters.
It is best to connect the converter prior to powering the DDF7001. Once the converter is
detected by the USB driver the MPT UI program can be used to configure the serial ports.
The ports will default to the NMEA mode if no other selection is made.
RECEIVER
If a serial receiver is selected port 0 will be configured for that receiver. This can be
overridden using the MPT User Interface program to set the receiver port to any serial port.
For the receivers supported by the DDF7001 the Set Frequency (0x0014), the Set Squelch
(0x0015), and the Set Rx Volume (0x0016) commands set the frequency, squelch, and receiver
volume. Other commands to the receiver can be passed to it using the Receiver pass through
command (0x0017).
NMEA
If a serial port is configured as an NMEA port, the $ at the beginning of the message is
stripped and the NMEA message is forwarded with its identifier.
GENERAL SERIAL DEVICE
If the serial port is configured as a general serial device then data is sent to the serial port
using the Serial Pass through (0x0026) command and data is received from the serial port via
the Serial Port Data (0x0026) response.
NMEA DEVICES
GPS receivers and compasses used with the DDF7001 output NMEA standard GGA, VTG, and
HDM messages. These devices are connected to the DDF7001 via a USB-to-serial converter.
See the USB-to-Serial Converter section of this manual for further information on using
USB-to-serial converters.
DDF7056 YAW RATE SENSOR