User`s manual

37
Connecting Devices To the DDF7001
The DDF7056 Yaw Rate Sensor is used to provide a faster update of the heading in mobile
applications where the vehicle is performing frequent turns. This device outputs an NMEA
message; however, its baud rate is 38.4 k. Therefore, the MPT User Interface software must
be used to set the baud rate to 38.4 k prior to using the yaw rate sensor.
USB RECEIVERS
The DDF7001 currently supports the ICOM R1500, ICOM R2500, and the AOR SR2200 USB
based receivers. The DDF7001 configures the receiver to receive narrow band FM
transmissions required for the direction finder to work properly. Currently only frequency,
squelch, and receiver volume setting is implemented; however scan commands are supported
within the Doppler SignalTrack and TargetTrack applications that make use of the receiver
command pass through feature.
SERIAL RECEIVERS
The DDF7001 currently supports the ICOM R8500, AOR AR8600, and the AOR AR500 RS232
commanded receivers. The DDF7001 configures the receiver to receive narrow band FM
transmissions required for the direction finder to work properly. Currently only frequency,
squelch, and receiver volume setting is implemented; however scan commands are supported
within the Doppler SignalTrack and TargetTrack applications that make use of the receiver
command pass through feature.
USE OF RECEIVERS NOT SUPPORTED BY THE FIRMWARE
It is possible to use receivers that are not supported by the direction finder’s firmware and
software. Any narrow band FM receiver or scanner can be used. Connect the audio output
(normally the external speaker jack) to the Audio Input of the direction finder (see Figure 26).
If you desire an S meter output from the direction finder firmware and the receiver has an
analog S-meter output connect the RSSI output of the receiver to the open leads on the
Receiver Connector (see Figure 23). After you make this connection you must calibrate the S
meter as described in the MPT Software User’s Manual.
Frequency, volume, and squelch settings must be made from the front panel of the receiver.