DOPPLER SYSTEMS DDF7000 (MPT) USER’S MANUAL © December 3, 2011 Doppler Systems LLC / PO Box 2780 / Carefree, AZ 85377 Revision A: July 19, 2013 Revision B: October 17, 2013
Doppler MPT Users Manual Revision A CONTENTS WARRANTY INFORMATION ............................................................................ 1 INTRODUCTION ......................................................................................... 2 SPECIFICATIONS ........................................................................................ 4 MOBILE ANTENNA INSTALLATION ................................................................... 5 FIXED SITE ANTENNA ASSEMBLY ............................
Doppler MPT Users Manual Revision B Figures Figure 1: VHF Mobile Antenna Installation..............................................................................6 Figure 2: THF Mobile Antenna Installation ..............................................................................6 Figure 3: Remove the longer cap screws to install the lower mast ..........................................8 Figure 4: Secure the lower mast to the frame using the cap screws ........................................
WARRANTY INFORMATION Doppler Systems will repair or replace, at their option, any parts found to be defective in either materials or workmanship for a period of one year from the date of shipping. Defective parts must be returned for replacement. In the US, contact the factory, or overseas your local distributor, for advice about returning any defective parts or equipment.
Doppler MPT Users Manual Revision A Chapter 1 INTRODUCTION The Series 7000 is a high performance radio direction finding system that operates using the synthetic Doppler principle in which a circular array of antennas are combined in a way that simulates a single element rotating in a circular path. As the simulated element approaches the wave front of an RF signal, the frequency increases due to the Doppler effect, and as it recedes from the transmitted source, the frequency decreases.
Introduction • Audio can be streamed from the direction finder to the laptop over the Ethernet. • Wide bandwidth biconical antennas provide excellent sensitivity throughout the entire operational frequency band. • Designed to work with standard commercial narrow band FM receivers • Highly configurable allowing for autonomous operation and multiple networking options • Master-Slave configuration allows up to 15 frequencies to be monitored simultaneously using one antenna.
Doppler MPT Users Manual Revision A Chapter 2 SPECIFICATIONS DF Method Frequency Range Dimensions Weight Synthetic-Doppler with patented "Smooth Summing" 125 - 1000 MHz 1 deg rms (8 element antenna) 2.5 deg rms (4 element antenna) 0.1 deg 2 samples per second (adjustable) -123 dBm Adjustable from 1 to 20 samples 80 ms minimum Adjustable (250, 500, 1000, 2000 Hz) 11 - 14 VDC 2 USB Host Ethernet (RJ45) Receiver audio and RSSI 3.5 mm Speaker Out 7.
Chapter 3 Mobile Antenna Installation Chapter 3 MOBILE ANTENNA INSTALLATION Four antenna elements are used for mobile operation. At frequencies below 500 MHz, magnetically mounted quarter wave whips are used. These antennas must provide a good coupling to the ground plane, and must be of exactly the same type. It is especially important that the coaxes used have the same length.
Doppler MPT Users Manual Revision A Figure 1: VHF Mobile Antenna Installation Figure 2: THF Mobile Antenna Installation 6
7 Chapter 4 FIXED SITE ANTENNA ASSEMBLY Fixed site antennas are shipped unassembled. This section provides assembly instructions. IN THIS CHAPTER Antenna Mounting Location ........................................................................... 7 Single Band Antenna Installation .................................................................. 7 Two Band Antenna Installation .................................................................... 16 Three Band Antenna Installation ........................
Doppler MPT Users Manual Revision A Figure 3: Remove the longer cap screws to install the lower mast 8
Fixed Site Antenna Assembly Next position the bottom mast to fit over the connectors and drain plug and fasten the mast to the antenna frame using the screws and lockwashers from step 1. The figure below shows the mast connected to the frame.
Doppler MPT Users Manual Revision A ATTACHING THE BOTTOM MAST TO YOUR MAST The fixed site antennas are furnished with a mast clamp for installation on a pipe or pole. The diameter of the pipe or pole can be between 1.25 in. and 3.5 in. The figure below shows how the mast clamp is installed.
Fixed Site Antenna Assembly ATTACHING THE CABLES Unroll the control and coax cables being careful not to damage the ferrites or to crimp the coax. Be careful to keep the connectors clean from dirt. Fasten the control cable by aligning the key and turning the outer locking ring until it just meets the red line on the mating connector. Fasten the TNC connector until it is tight. Use the supplied cable ties to fasten the cables to the masts. At this point the assembly should look similar to the photo below.
Doppler MPT Users Manual Revision A Figure 7: Arrangement of the antenna element mounting hardware 12
Fixed Site Antenna Assembly Three Wire Biconical Elements The antenna elements are mounted to baluns at the end of the frame arms using a 5/16-24 cap screw, a flat washer and a rubber washer. The arrangement of the hardware is shown in the photo below.
Doppler MPT Users Manual Revision A Thread the cap screw into the balun being careful not to cross thread the screw. Tighten the cap screw until the lock washer is fully compressed. Do not over tighten the cap screw or the brass threads in the balun may be stripped. Mount all sixteen elements. Align the biconical elements so that all elements are symmetric. The photo below shows two elements connected to the balun.
Fixed Site Antenna Assembly After all the elements are attached the antenna is ready to be erected. The assembled antenna will look like the photo below.
Doppler MPT Users Manual Revision A TWO BAND ANTENNA INSTALLATION To assemble the two band antenna perform the steps detailed above; however, before attaching the antenna elements install the connecting mast and cables. The connecting mast is installed similarly to the base mast using the 5 longer screws and lock washers at each end. When installing the coaxial cable make sure the end of the cable with the most ferrite beads is connected to the lower antenna.
Fixed Site Antenna Assembly Next connect the UHF antenna frame to the coupling mast, connect the cables, fasten them with cable ties, and then install the antenna elements on both VHF and UHF frames. The completed antenna stack is shown below.
18 THREE BAND ANTENNA INSTALLATION Follow the steps above to install the three element antenna and simply install the third antenna using the short connecting mast supplied.
Fixed Site Antenna Assembly Figure 14: UHF to THF mast with cables 19
Doppler MPT Users Manual User's Guide Figure 15: THF Antenna Frame Installed 20
Fixed Site Antenna Assembly There are two styles of THF elements. One style of elements mount similar to the other elements except that they have longer cap screws. The other style shown in Figure 16 below have a rubber washer installed to preload the elements and to keep moisture out of the threads. Do not over tighten the elements or you may strip the brass inserts in the balun.
Doppler MPT Users Manual User's Guide The final assembly will look like the photo below.
Chapter 5 DDF7001 PROCESSOR CONNECTIONS The DDF7001 processor requires a 12 V power supply, a loud speaker or headphones, a receiver, and a Windows based computer. This section will detail the wiring and setup of the DDF7001 processor for the various supported receivers, GPS receivers, and the compass. The figure below identifies the various DDF7001 connectors. Figure 18: DDF7001 Connectors The following block diagrams illustrate a number of typical configurations for the DDF7001.
Doppler MPT Users Manual Revision A Figure 20: Direction Finder with RS232 receiver 24
Chapter 5 DDF7001 Processor Connections Figure 21: Single Antenna Fixed Site System with LAN Connection 25
Doppler MPT Users Manual Revision A DDF7095 THF Antenna Control Coax UHF Antenna Control Coax VHF Antenna Coax USB Receiver Control Audio 12VDC PC DF Processor DDF7001 USB Crossover Cable Figure 22: Three Antenna Fixed Site Installation 26
Chapter 5 DDF7001 Processor Connections Mag Mounted Antennas Mag Mounted Summer DDF7080 Coax Control USB Receiver Audio USB DF Processor DDF7001 12VDC Laptop Crossover Cable Figure 23: Basic Mobile Installation for Homing Mag Mounted Antennas Mag Mounted Summer GPS Coax USB Receiver Control RS232 Audio USB Laptop 12VDC Crossover Cable USB-toSerial DF Processor USB Figure 24: Mobile Installation with GPS 27
Doppler MPT Users Manual Revision A IN THIS CHAPTER Power and Speaker Connection ................................................................... 28 Receiver Connection ......................................................................................... 28 Computer Connection ..................................................................................... 30 NMEA Devices.....................................................................................................
DDF7001 Processor Connections If your receiver has an RSSI analog, connect it to the blue wire, RSSI Input, with the white wire grounded to the receiver. Additionally, you must connect the coaxial cable from the DF antenna to the receiver antenna input. RSSIinput Ground CAB170 (AWG22 BLU) TWISTED PAIR CAB354 (AWG22 WHT) 6 5 4 View from Wiring End. 5 ft end to end 3 2 1 CON270/264 1 Audhigh 2 Audlow CON281 (3.5mm) CON281 is Kobicon 171-3235-EX 3.5mm mono plug.
30 COMPUTER CONNECTION The DDF7001 can be connected to a network via a network hub or switch, or it can be directly connected to the computer's network interface. CONNECTING TO A NETWORK To connect the DDF7001 to a network simply connect a standard CAT5 or CAT6 network cable to the DDF7001 and to a switch, hub, or router on your network as depicted in the figure below.
DDF7001 Processor Connections The Ethernet software in the DDF7001 ships with a DHCP client enabled, so if connected to a network that supports DHCP, the DDF7001 will obtain an IP address from the DHCP server. Once it has done this it begins broadcasting its IP address on the network as a UDP broadcast message on port 9007. This message is broadcast once every 2 seconds.
Doppler MPT Users Manual Revision A CONNECTING DIRECTLY TO A PC The DDF7001 may also be connected directly to the computer using a crossover cable as shown below.
DDF7001 Processor Connections The DDF7001 is shipped with a default IP address of 10.0.0.100. If you are going to connect it directly to your computer you must set your computer TCP/IP properties as shown in the Figure below. Once it is connected you can use the web server or the Telnet interface to change the IP address and the IP port number.
Doppler MPT Users Manual User's Guide Chapter 6 CONNECTING DEVICES TO THE DDF7001 34
Chapter 6 Connecting Devices To the DDF7001 The DDF7001 has two USB ports that enable the user interface a variety of devices to the direction finder.
36 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.
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.
Doppler MPT Users Manual Revision A Chapter 7 CONFIGURING THE DIRECTION FINDER The software configuration of the DDF7001 is described in the MPT Software User's Manual and the help file that is installed with the MPT User Interface software. Refer to these resources to learn how to adjust the direction finder settings.
Chapter 8 Interfacing to the DDF7001 Direction Finder Chapter 8 INTERFACING TO THE DDF7001 DIRECTION FINDER This chapter is provided for the user that wants to develop their own software to interface with the DDF7001 direction finder. It describes the command and response interface and the audio streaming interface. The RJ45 connector on the DDF7001 provides the Ethernet interface to the DDF7001 direction finder. IN THIS CHAPTER Using the Binary Serial Interface ...........................................
Doppler MPT Users Manual Revision A COMMAND AND DATA STRUCTURE Every DDF7001 command and the data coming from the DDF7001 conform to the data structure as shown in the following table.
Interfacing to the DDF7001 Direction Finder 0x2940, 0xEB01, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x6180, 0xA141, 0x6300, 0xA3C1, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x9301, 0x53C0, 0x5280, 0x9241, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8341, 0x4100, 0x81C1, 0x8081, }; /
Doppler MPT Users Manual Revision A COMMANDS The following table defines the commands that can be sent to the DDF7001. The DDF7001 responds by echoing back the command with the value that was accepted by the DDF7001. If the DDF7001 did not accept the command then nothing will be echoed back. Items marked in bold are the default settings.
43 Command Command Data Name Number Length Range Comments Sweep Rate 0x0001 byte 0-4 0 = 0, 1=250,2=500.
Doppler MPT Users Manual Antenna Revision A 0x000A byte 0 = VHF In Auto mode the antenna switches will be controlled by the 1= UHF receiver frequency as shown below (receiver frequency must be 2 = THF controlled by the direction finder) 3= Auto 100 < f < 250 MHz - VHF Antenna 250 ≤ f < 500 MHz – UHF Antenna 500 ≤ f < 1000 MHz – THF antenna Reserved for future use 0x000B Direction Cosines 0x000C 4 INT16 -10000 - 10000 Range is -1 to 1 (divide by 10000) Each receiver has calibrated direction
Interfacing to the DDF7001 Direction Finder Configure Serial Port 0x0011 6 bytes Byte 0 : port number (0 - 3) The DDF7001 supports up to a 4 port USB-to-serial converter. Byte 1 : Baud Rate 0 = 1200 1 = 2400 2 = 4800 3 = 9600 4 = 19200 5 = 38400 Byte 2 : Stop Bits 0=1 1 = 1.
Doppler MPT Users Manual Revision A Receiver Pass Through 0x0017 Various Sweep 0x0018 byte Sends command directly to receiver Nibble 0 : Direction 0 = CW Manual command to start the sweep Used in factory testing. Not recommended for use by user. 1 = CCW Nibble 1: Sweep State 0 = Sweep Off 1 = Sweep On Calibrate S Meter 0x0019 byte 0–9 Callibrates S-meter to the level indicated.
Interfacing to the DDF7001 Direction Finder Serial Pass Through 0x0026 Various byte 0: port Number remaining bytes serial port data Send Serial Number 0x0027 0 Stream Audio 0x0028 UINT16 Sends the serial number of the unit Port number to stream audio to 0 = disable streaming Streaming Audio Squelch 0x0029 UINT16 Compress Audio 0x002A UINT8 Audio must exceed squelch level in order for audio Default 50 to be streamed 0 = no compression 1 = A law compression 47
48 RESPONSES With the exception of commands that specifically ask for data to be sent the response to a command is that it will echo the data back in the exact format it was sent with the actual settings of the DDF7001.
49 Response Name Response Number Format Comments Bearing Message 0x0000 ASCII Comma delimited string Bearing (0-359.9), S meter (0-255), Number of Averages (0-20), Audio Level (0-2047) UTC Timestamp (if GPS receiver is connected) Identify Hardware 0x000E ASCII String will be of the form major version .minor version Identify Software 0x000F ASCII String will be of the form major version .
Doppler MPT Users Manual RX Settings 0x0022 Revision A ASCII Settings will be sent as a block of ASCII data with each setting having the following format Cmd number,setting Serial Port Data 0x0026 Bytes Data from the serial ports Byte 0 = port number Remaining bytes is the message Serial Number 0x0027 ASCII Serial number 50
51 AUDIO INTERFACE The DDF7001 digitizes the receiver audio and can stream it via UDP. Once a TCP/IP connection is made the controller sends a Stream Audio (0x0028) command to the DDF7001 signaling the DDF7001 as to which port to use to stream the audio. Once this command is received the DDF7001 will stream the audio when the audio level exceeds the audio squelch threshold. This threshold can be set via the command interface.
Doppler MPT Users Manual User's Guide INDEX A S ANTENNA MOUNTING LOCATION • 7 ATTACHING THE BOTTOM MAST TO A YOUR MAST • 10 ATTACHING THE ELEMENTS • 11 AUDIO INTERFACE • 50 SINGLE BAND ANTENNA INSTALLATION • 7 C COMMAND AND DATA STRUCTURE • 39 COMMANDS • 41 COMPUTER CONNECTION • 30 CONFIGURING THE DIRECTION FINDER • 37 CONNECTING DEVICES TO THE MPT • 33 F T THREE BAND ANTENNA INSTALLATION • 18 TWO BAND ANTENNA INSTALLATION • 16 U USB RECEIVERS • 35, 36 USB-TO-SERIAL CONVERTERS • 30, 35 USB-TO-SERIAL
