ddf6100d radio direction finder user manual
Contents
1. 4 4 1 1 1 1 4 a 4 1 4 1 1 020 2 vec C165 C190 357 1357 4 4 4 4 4 4 4 4 AGND 1 1 1 4 4 4 1 1 038 039 U40 942 045 044 046 047 058 060 Wa C145 162 1 1 ups ut 1025 1025 1025v 159 C146 C104 C174 C164 C130 157 C122 128 118 C103 4 1 1 1 4 4 4 4 1 1 1 080 U8 vA 1108 DEL GAIN H2 4 4 4 4 4 4 5___ 1 1 4 4 4 A u52 05 4025 RECT CAP H 570 47 DDF6102 Decoupling Capacitors 0302 MTPISNOSE _ Ratt 03082. D7 19 ODEV gt c 1 96 245 gt 0 7 ADO 10 ADI MAT 5 02 ADS 02 saps ADE 4 8 08 ADT og mw 08 m a mo A 07 0 2 9 JE wmo L VPPIATAIATS 27651212 15 64K Bytes EPROM 00 7 0 2000 8 08000 OxFFFF DECODE 1080H u12 2 11800 _ 1 R w b15___ROVR AGC m7 1 i ROM ost te 5 oo 25 72 PI ROM CSI 2 u 3 p WF MEM CSi gt 183 1 3 c es 5 03 DGND 48 9 pe gt we 5 Da s 0 102 CTA Soe 05 m 6 06 5 248 Ss 06 1
3. BANDPASS FILTER BANDPASS FILTER GAN 2 GAN 2 COMPANDOR Q 5 mo 051 PINK BLU 49 9K 102K GRN 82 10K R121 5 T109 15 RED 1 O a R124 01150 C168 R132 Cue U109A 15 255K R131 M 115 499K 107 ie DEL GAIN 3 NAPIHP 5 511K Ff u m 8 115 400FCOM gt 40 BR eT 4 100FCOM A gt 8 w 7 vor 44 R130 S0 100 CL 0 ve o Jw RECT IN LSH VA iia 5 8 4 p a os RESR3 FCOM gt 1 46 7 15 15 RECTOR 1 EN 2 gt 5 100FCOM NEST y cw C124 Wa 5 1 035 015 Wa P 7105 NEO 04 WHT o s 4 8 1 vec o py 5621 FCOM NOTCH 8 2FCOM NOTCH Q 8 R150 R153 100K 100K R154 C109 C194 108 R103 107 0102 115 R149 U103A 12 115 i 01038 ss 115 255K 115 C106 4 3 17 18 3 220 26 1 INV 5 INV IIN 124K 2 ae BP EXTSPKR gt SOFCOM gt p w O 2 vor FS ow st R102 R108 2 10K k 115 10w otf ve LSH VA y
4. 5 J6 1 52 1 2 Cabling for Auto Tracking with Roof Pod Auto Pwr Plug Size Document Number REV ex DDF6159 i 7 Power Cable A Figure 4 5 Date April 21 2001 Sheet of 16 0076061 6062 6067 DDF6116 12 Coax Cable B 0076068 Antenna 1 DDF6060 RF Summer fo DDF6118 12 Control Cable 4 0 3 1 _ 1 1 114121513614 7 1 5 LE 1 Ant ___100 40 J Ext Spkr 400 25 Ce Receiver 36 DDF6100 AGC Display Processor 40040 23 Sue aad Power Pow N4 SDA Laptop PC DDF6161 6 Data Cable 8 Active Antenna DDF6161 2 Data Cable GPS Ant DDF6074 GPS Receiver DDF6158 Power Cable DDF6072 Power Dist Box 42 1 J4 J5 12 12 Cabling for Auto Tracking without Roof Pod Auto Pwr Plug Size Document Number REV ey Power Cable A Figure 4 6 Date April 21 2004 Sheet of DDF6160 Power Cable 17 12 VDC Ground To DDF6072 J4 Conxall 6382 2PG 513
5. 2 lt SRO pat 9 on VOUT4 5 gt 109 017 SRI 02 VOUT3 gt 16 DIAS 17 5 018 SRZ D3 gt lt DIAS 1 08 9 CLK NE DAS 15 10 we 02 02 DIAS m 05 MS 08 8 veer lt O 022 MSB D7 DGND J 023 MACHTTO 00 7 07 0130 ung CLK _INB 1 2 10 DIAO 2 18 00 2 ob 4 5 a DO DAI 3 Di es 8 7 02 01 418208 MAD 4 7 8 a 15 WAD3 02 m 5 40 8 5 32 6 14 9 a WADS 5 MAS TNR 9 728 WADE a 5 sas 008 MAS 97 255 WADT mS 8 fa 07 6 a 512 5 TOAD 10 1024 DIAData 19 T no 7048 woo n 1 40 2 10 OR x 12 2 245 M2 2270 2 WFO we WRI 2 2 E MEM CSi MIS6I256L TONC DDF6102 Waveform Generator 43 lt MN8 15 gt gt L 40K DIP 015 y A 13 2 5 12 10K DIP 01
6. 32 ADS 1 15 5 BUSWIDTH P17 5 0 ooo o 6 RESET 00 15 MAT P3 1 AD1 6 8 1 Poo P32 AD2 1 9 5 i T G a 05 5 are xg Pos PN P3 6 AD6 5 any xg Pos 0 3 0 z 08 50 010 010 lt 24214010 17 p MAT 15 48 002 MATZ 28 po zexint PAAIADI2 1 7 ADT MATS PASIADI3 42 26 SJ 2464014 oe ae ne J 25 PATIADIS 5 8 _ 62 __ S 924504 Le gt 5 E vec Hs0 0 gt vec 2 E BOCTOEKETO u12 mo 0 9 M 01 8 02 7 03 75 5 55 05 4 07 251 WAH o B A 2 41 1 21 we vec SDA 2 JE 24 16 2K Bytes EEPROM 15622561125 15 32K Bytes RAM 4 0x4000 Ox7FFF DDF6102 Processor lt 007 0125 2 00 vec 3 7 11 4 82 02 DGND 85 6 a 5 8 7 1 05 A 8
7. gt CWA __ 053 LigorcoM ___ gt 25 7 05 15 vec 2 1 5 5 1K 06 an 454 2 07 71 14 50 07 csc gt RIB _2 __ gt 2 18 5 XTALA XC 16 RXC 00 am 153600 ee CLOCK 2 6 DIR vec 1000 vec DSRC msz 4 U140B ER 39 IOR 0103 49 lt PROV 53 183600 RRY 8 2 9 63 XD 2 15 5 lt RD R146B RIS D 4ANTP wre _ 8 9 SE Hx gnii coo E 1 a AD 13600 8 d d CLKSEL VCC 2 ovce L 87160654 DDF6102 Decoding 42 MAO 31157 9 omn __ 5 eo 1025 FOOM gt tne J 1026 gt a 027 S 0 09 s o 1030 T es 031 ics DR eW 0 9 okis HE OKA DA ADRO 24 Jao 4 1 a TOAD 11 ADRI 2 2 D n M gt CLK_INB 8 LOAD a gt 8 we S DAD 15800 VOUTS 2 gt
8. _ 10K DIP 015 Wa 6 9 10K DIP 0015 Wa 44 DDF6102 Waveform Amplifiers EG 13 P 1 16 gt 4 5 12 E ug 510P gt 510P 10K DIP LF347 015 Wa 4 ume 2 4 15 1 6 11 gt 82276 3 510P t 510 10K DIP umc N 14 01136 8 7 10 1 10 10 gt VN 1 10K DIP lt 015 uno 4 7 8 gt 7 a 1 51 DIP 8 9 5 ay vos gt Sn A 7 51 DIP 10K DIP 015 Wn 13 5 1357 AGND vec 455 vec 101 vec qi 2b v o May R 5 6 J5 5 8 7 90 gt V 05 9 AGND VN 8 0 VN D5 tiie D 07 P lt gt TRE 15 28 Swe 9 28 RES vec 1 gt VPWR 9 20 KB CIK SKRS vec DGND From Power Supply 1 1 Keyboa
9. RD DM 4 RESET VPWR 2 KB CIK voc KBL3 3 4 DECR AVG TIME 5 51 Sh of ONOFF KB LA 3 DECR SWEEP FREQ 5 o2 POWER 6 ALT 52 812 3 4 DM MOM 53 13 4 xn SNA X ms X 5 X 14 54 NCRSWEEP FREQ MOM 00 DI 02 Da D sr DDF6101 Keyboard Switches 37 __DSPLAY POWER vec WRI KB_CLK RESET DM CS MA O 7 000 7 VDISP DISP_RET DGND gt Wm KB CLK gt gt S MA O 7 00 7 gt 01 09 00 LED ROW 0 180 Deg LED ROW 0 D18 1005 RED RED LED ROW 0 1 02 LED ROW 5 2 480 225 Deg 1 LED_ROW 1 2025 Deg 1 LED ROW_1 LED COL 4 3 RED RED LED ROW 6 03 450 L AA LED ROW 2 225 Deg 1 LED ROW 2 10 LED ROW2 RED RED LED ROW 7 6 i 9 p12 LED ROW 4 7 LED ROW 3 67 5 Deg LED 3 24750 LED ROW 5082 7611 RED RED LED COL 1 05 013 90 Deg N LED_ROW 4 270 Deg 1 LED_ROW 4 105 RED RED LED ROW 0 1 06 LED ROW 5 2 13 LED ROW1 TED ROW LED 11
10. be connected to GPS or compass RS232 output See section 6 2 2 for details of this interface 25 J12 Port 4 RS232 serial interface configured as DTE be connected to GPS or compass RS232 output See section 6 2 2 for details of this interface Figure 3 1 Front Panel Controls 9 J11RS232 2 FN Van A KO 5 5232 85252 O 15 5 T AS METER EXT N INPUT RF SUMMER CC 27 12 VDC 1 AMP ke J Figure 3 2 Rear Panel Connectors 4 0 Installation 4 1 Homing Installation no GPS The DDF6100 can be used in a stand alone configuration in which the relative bearing is displayed on the front panel The laptop computer GPS compass and power distribution box are not used The roof pod antenna DDF6073 may be used with RF summer DDF6070 or the system can also be used with individual antennas DDF6061 6062 6067 and 6068 and the magnetic mounted RF summer DDF6060 Figures 4 1 and 4 2 show the connections required between the various components used in the homing setup 4 1 1 Antenna Installation with Roof Pod The roof pod antenna provides a convenient platform for mounting all of the antennas and the RF summer Referring to Figure 4 3 assemble the roof pod as follows Mount the RF summer DDF6070 11 below the ground plane in the center of the platform using the four
11. 2 2 FT DDF6160 DDF6074 GPS Cabling 56 C100 Compass SE 25 Sensor Alum Housing 3 6M 12 FT Red Black Blue Black Blue White Black White Blue Orange Black Green Black Orange Green White Black White Black Green White Red White 7 KVH 01 0177 15 Shield DDF6075 Compass Cabling 57 Red Black 20 TP Conxall 6380 2PG 311
12. 3 0 Controls and Connectors Figure 3 1 on shows the front panel controls and figure 3 2 shows the rear panel connectors The items marked in the following paragraphs refer to the controls and connectors in these figures Press the red power switch to turn the unit on or off 2 The front panel LEDs may be dimmed by momentarily pressing this switch Pressing it again returns the LEDs to full brightness 43 Bearing data is computed twice per second The front panel displays a moving average of the last N bearings calculated The number of bearings averaged N may be increased or decreased by pressing the up or down arrow keys 44 The bearing is displayed by illumination of one of the red LEDs on the circular display The center yellow LED indicates that power is on 45 Bearing angles in degrees are displayed in the 7 segment display Both the circular LED display and the digital display are held for 10 seconds after the signal disappears To help distinguish when the bearing is updating and when it is being held the decimal point following the units digit alternates on to off whenever the bearing updates 46 The signal strength is indicated in this 7 segment display It should be calibrated so that the signal strength is 0 when no signal is present and 9 when a very strong signal is present See the description of controls 48 410 and 411 for the method of calibrating the S meter The S meter displays a dash if the S meter input is n
13. Radio Equipment and Systems RES Generic Electro Magnetic Compatibility EMC for radio equipment EN55022 1995 DC Conducted Emissions Test in accordance with the limits specified in prETS 300 339 1993 and 55022 1995 for Class Devices and performed using methods and procedures detailed in CISPR 221993 including Correction 1 Feb 1995 and Amendment 1 April 1995 using instrumentation equipment and facilities in conformance with the requirements of CISPR 16 1 1993 PrETS 300 339 1993 DC Voltage Variation Immunity Test Clause 9 5 in accordance with the instrumentation equipment facilities methods procedures and limits Criteria specified therein i e operate through under conditions of 10 voltage variation in the DC input power PETS 300 339 1993 DC Transients and Surges Immunitiy Test Clause 9 6 in accordance with the i ion equipment facilities methods procedures and limits Criteria specified in ISO 7637 1 1990 i e operate through ISO 7637 1 1990 Test Pulse 1 Test Pulse 2 Test Puise Test Pulse 3b Test Pulse 4 and Test Pulse 7 each as modified by prETS 300 3391993 Clause 9 6 The technical documentation required to demonstrate that this product meets the requirements of the EMC Directive has been compiied by the signatory below and is available for inspection by the relevant enforcement authorities The CE mark was first applied in 1997 Authority Deni
14. 21 6 1 DDF6100C Serial Command List Command Description of Command Default values shown in bold Number 28 ____ 33 through 239 240 through 255 256 through 408 409 through 495 496 through 511 512 through 670 IN IN IN N 0 N 671 through 721 N N N NI N I NI NI N IN IN IN OTs N 733 through 751 752 through 767 data bits 7 data bits 8 stop bits 1 stop bits 2 parity NONE port1 parity EVEN port1 parity ODD Calibrate the bearing to the value given by the command number 33 For example command 33 calibrates the bearing to 0 degree These commands are not allowed because of conflicts with the CIV control characters Calibrate the bearing to the value given by the command number 49 For example command 256 calibrates the bearing to 207 degrees Not defined These commands are not allowed because of conflicts with the CIV control characters Not defined Not defined port2 baud rate 1200 port2 baud rate 2400 port2 baud rate 4800 port2 baud rate 9600 port2 data bits 7 port2 data bits 8 port2 stop bits 1 port2 stop bits 2 port2 parity NONE port2 parity EVEN port2 parity ODD Not defined These commands are not allowed because of conflicts with the CIV control characters 900 through 920 Set the signa
15. LN aN Channel B ev TNC RF Sum 2 001 1 fo oj BR n 9SW L6 4 REY sae 90 A 1 6 gt Control 10 8 DSB6115A SCH PIER 2 10 Channel cs Re RF Sum m EN oo rr in 6 0 Control a DSC611SASCH 81 Channel D Ql 5 9801 9SW ORM Control 4 4 DSD6115A SCH DDF6111 subboard DDF6115 4 Element Commutator Assembly 51 RFI gt 95 9VvDC A 5 RIA ROA 2 150K 150K 4 150K DIA 10 3 141 3 1 if RF Sum gt A L oat 00 001 MSA1105 01 001 yr 01 32 5 RaR 2 pee 510 150K 150K 4 5 lt gt 54 NDO 121K lt Control 150K 499 1 2117 1 130K on 3821 RTA 150K 499 DDF6115 Channel A 52 1 BRN AGND1 2 9 BLU 95 1 BRN 2 RED EA RED 10 ORG EB BLK 3 YEL EC YEL OTa WHT AGND2 GRN 9 74 BLK ED BLU 3 7 aT 8 2 Drain Wire 9 95 7 ov 15 3 280 956 321 87 J SHIELD DA15P 5927 CL 8 COND 24 777 RRA 15P Plug
16. Port 0 RS232 serial interface configured as a DCE May be connected directly to PC using a 9 pin male to 9 pin female straight through cable See section 6 2 1 for details of this interface 415 J2 Port 2 RS232 serial interface configured as a DTE May be connected to GPS or compass RS232 output See section 6 2 2 for details of this interface 16 J3 receiver audio input Connect the external speaker output of your receiver using the supplied 3 5 mm to 3 5 mm cable or make a custom cable using the supplied 3 5 mm plug 17 Port 1 CIV interface May be connected to the CIV remote control interface on your receiver using the supplied 3 5 mm to 3 5 mm cable See section 6 2 3 for details of this interface 418 J5 S meter input Connect to the receiver s S meter output using the supplied 3 5 mm to RCA phono jack cable or make a custom cable using the supplied 3 5 mm plug 19 J6 external speaker output May be connected to an external speaker not supplied using a 3 5 mm plug 20 J7 DC power input Connect to 12 VDC using the supplied 2 5 mm cable or on North American models from the supplied 110 vac power supply 2 J8 antenna control cable output Connect to the 15 pin cable supplied with RF summers DDF6060 or DDF6070 22 J9 antenna switch output Not used DDF6100 23 J10 auxiliary input Reserved for future expansion 24 J11 Port 3 RS232 serial interface configured as DTE
17. Receiver DDF6100 Display Processor 400 25 45 e AGC Ce DDF6110 Power Cable fe ew aw 9 Adapter to Auto Power Plug Figure 4 2 Cabling for Homing without Roof Pod 13 gt 5 Figure 4 3 Roof Pod Antenna Top View 14 4 Figure 4 4 Roof Pod Antenna Side View 15 Electronic Compass GPS Active Antenna DDF6073 DDF6075 Roof Pod Antenna DDF6070 RF Summer iN a DDF6116 12 DDF6118 12 Coax Cable Control Cable DDF6161 2 Data Cable 40DK40 Ext Spkr 5 5 9 9 4 4 4 400 25 4 8 8 DDF6074 Receiver TEJ DDF6100 3 3 GPS AGC Display Processor 7 7 5 5 6 6 4 40040 1 1 55222 J11 Power 123 DDF6161 6 Data Cable DDF6158 Power Cable DDF6160 Power Cable 1 2 2 3 DDF6072 Power Dist Box 1 1 2 3 2
18. This is given by two ASCII digits which is the 8 bit exclusive OR of all characters between the and characters 6 3 1 3 Software Message The response to command 983 identify software is the NMEA 0183 message DFSW X XX HH lt CR gt lt LF gt In this message X XX is the software revision for example 2 07 HH is the check sum This is given by two ASCII digits which is the 8 bit exclusive OR of all characters between the and characters 6 3 1 4 Panel Message The response to command 997 send panel message is the NMEA 0183 message DFPNL X Y Z HH lt CR gt lt LF gt In this message X and Z may be decoded as given in the following tables HH is the check sum This is given by two ASCII digits which is the 8 bit exclusive OR of all characters between the and characters Number of averages 25 6 3 2 Receiver Messages Messages to and from the receiver are in CIV format This format is TA CN SC DT SF where PR is the preamble hex FE RA is the receive address TA is the transmitter address CN is the command number SC is the optional subcommand DT is the data and may be several characters in length and SF is the message suffix hex FD The maximum length of a CIV message including prefixes and suffix is 80 characters Received messages are buffered and if a jamming character hex FC is detected anywhere within the message the message is ignored Also the received message must beg
19. ve coz H v bn cos gt PE 4 z we cova 27 Hi cos gt HE 59 9 1 we moas gt gt 5 5 0 4 u 100007 gt DGND 56 SUB 2 00 KE CK 0 L DSR RE E gt 082 DISPLAY_POWER 079 18 2 RI 27 1 NA a ROWO we 7 27 5 c H 1 5 27 2 we 2 7 R4 27 we 2 3 6 NH 4 Lh R7 27 GND lt TED 4 DISP_RET 28034 aE ROWE lt TD RWS R5 27 lt TED 6 Sk RB 27 lt TD RWT DISPLAY POWER DISPLAY_POWER i Lo cto 1 1 1 1025 4 1 1 4 1 10257 10257 DDF6101 Display Logic 36 Keyboard Inputs 510 KB LO of MOM KB sit KB 12 od MOM 57 KB 3 o4 MOM 59 KB LA sh MOM 58 KB 15 of MOM 02 BRG 0 SIG 0 SIG 9 CAL ATTEN PM Keyboard Drives DISPLAY_POWER gt p DISPLAY POWER DISP 21 ON OFF 00 gt D 00 Di 4 D2 Bot gt 02 D3 D 05 P 06 07 2 WRI KB
20. 0 6 2 ft Laptop for Laptop if sep arate 12 VDC Ground 2 To DDF6072 Conxall 6382 2PG 513 B 2 Figure 4 7 Receiver and Laptop Power Cabling 18 5 0 Operation 5 1 Initialization During turn on the bearing and S meter displays will momentarily indicate the software version used by the processor The software version is displayed as X XX in the bearing window and 1 in the S meter window Parameter values sweep rate port communications parameters etc are remembered during power off and restored upon power turn on It is also possible to restore the factory default values of all parameters by entering from the front panel controls Sweep rate 0 CAL enabled BRG 0 The default parameters are listed in Table 6 1 Note however that the bearing calibration values will also be returned to the factory default values and a recalibration will be necessary 5 2 Calibration The bearing angle and the S meter display are easily calibrated from the front panel Calibrate the bearing display so it reads 0 degrees when receiving a signal from straight ahead To perform this calibration use a strong steady signal such as a repeater output NOAA weather station etc Be sure the vehicle is in an area free of reflections with a clear line of sight to the known transmitter Select the CAL mode by pressing the CAL switch
21. 17 1 01 100 Contacts PART NUMBER CABLE LENGTH 17 1657 15 Backshell DDF6119 12 3 6 12 Mobile Control Cable 53 P2 TNC BNC CRIMP PLUG RFB 1106 2 54 658 DS COAX PART NUMBER CABLE LENGTH DDF6116 12 3 6 M 12 FT DDF6116 25 7 6 M 25 FT DDF6116 50 15 2 M 50 FT DDF6116 75 22 9 M 75 FT DDF6116 100 30 5 M 100 FT DDF6116 Coax Cable TNC CRIMP PLUG RFT 1202 2 V J1 2SG J2 GRD VBU BAT1 3 6V Na 3SG J3 2SG J4 2SG J5 2PG J6 28G DDF6158 6 P1 Smooth 1 52 Ribbed 1 75 172 4201 18 To DDF6100 J7 Conxall 6380 2PG 318 DDF6159 6 P5 Red 9 Black Auto Power Plug Conxall 6380 256 311 Power Distribution Unit 55 4 8 16 FT GPS Antenna Trimble 21423 00 SMB GPS Receiver Consol 5921 CL Shield 5 15 Black 5 17 9 9 9 4 4 8 E CARTS 3 Yala 75 Red 7 7 2 Power Cable 2 White 22 1 1 0 0 2 3 3 ae 3 Yellow DE9P DE9S Trimble 20260 Trimble 23198 62 6380 3PG 315 0 6
22. ASCII keyboard characters and pressing F2 F3 or F4 sends this message to port 2 3 or 4 respectively Pressing F5 sends the message to DF port 0 Any response from these ports will be displayed in the corresponding window Press lt ESC gt to quit the program 33 8 0 Servicing 8 1 Schematics A complete set of schematics is provided at the end of this section as an aid to troubleshooting and to clarify interfaces Because the DDF6100 is a microprocessor based system that uses high density electronic components it is recommended that the unit be returned to the factory for repair The only exception is for upgrading of the program EPROM which is described below The circuitry used in the DDF6100 is susceptible to electrostatic discharge Observe proper ESD precautions when servicing the unit Overseas customers should refer to the relevant Doppler Distributor 8 2 EPROM Replacement Remove the top cover by removing the 23 black 4 40 screws on the top sides and back of the unit Tip the top cover up and disconnect the speaker leads so the cover can be removed completely Replace the EPROM U123 using proper IC removal and insertion tools and observe electrostatic discharge precautions Reconnect the speaker leads and replace the top cover using the black 4 40 screws 34 SPEAKER DISPLAY LOGIC FILTERS 18 2 3 SHEETS 9 SHEETS KEYBOARD SWITCHES AUDIO PROCESSING 33 DISPLAY LOGIC DEMODS
23. C428 C425 01 ISW ho co AGND1 EB EC AGND2 EC AGND2 EE ED EG EF EE 4ANT 9 1 EG EH RXDC TXDD 4ANT 9 2 TXDC TXDB RXDB CORN RXDD TXD1 9 10 11 12 RXD1 13 14 7 2 1409 PAA 1406 TXD1 RDI 1404 YON C409 C414 TXDD oO RXDB YON TXDB RXDC TXDC 01 2 0 gt 6000 Omit J11 amp J12 DDF6114 EMC Filters amp Connectors 49 6462 01 01 2 0 POWER F401 1441D VIN 09 2 5mm Jack RF SUMMER RUE185 BEAD3 BEAD3 BEAD3 BEADS 040 1 gsw EA VINRTN AAA 1440 EC BEA
24. VIN 2 D 5 5 002 R301 R316 MTP1SNOSE D311 U301 ok 511 5 D pe vsw 1 D301 R310 MBR360 8 10K R313 5 1K 41025 R317 LowESR 47025 VPWR w 4 10K Low ESR 4 14148 6 1 pst 0 2 GI e H lt R304 4 5 ee 3 4 10K GND mue D309 1 61155 320 1 R315 10 67 184002 R305 1305 5 0303 4 bist 10 N T 1 on ONOFF MUR120 5 R319 200 x 05 303 632 Low ESR 1025 4 Tant R320 g 196K cais 5 470 25 470 25V 6 L304 LowESR Low ESR 127 2 25UH 5 030 7 636 037 40254 1 114002 R308 Low ESR 09 TE D304 035 L 2 2 SS 2 MUR120 9 R321 200 4025 c302 309 4 Low ESR 1025 Tant JP5 EL 0305 4 4 5 ONOFF MRD C326 R322 135 gee 397 1025 1 4 4 135V 2 4 4 i ae a VSW 6 3 GND FB gt i TARN R314 0302 1303 20 a 10K 6 5 rey 5 MBR360 25UH 313 0306 R307 470125V 3 0K 6304 ele Low ESR 47025 sic LowESR ZTS 1035 R309 40K 1307 DDF6103 Power Supply 48 991 AGND1 C476 C473
25. amp A D LED DISPLAYS PROCESSOR DECODING WAVEFORM GENERATOR WAVEFORM AMPLIFIERS CONNECTORS RS232 amp CIV INTERFACE J2 _ 52 DECOUPLING CAPS amp SPARES J1 155 00276101 00276102 00276114 POWER SUPPLY 5 00276103 DDF6100 Display Processor Schematics 35 00 7 2 Keyboard Input 5 us 2 RLO E 50 gt Di 13 a Seto Si 2 02 4 16 4 DBt 502 3 p W gt LP 082 12 2 bp gt D 5 1 5 5 083 803 05 7 Rie sku 6 05 5 17 085 lt ys 05 sta Le 0 Re p NE 4 BS 087 1 9 plex 2de 8 fa DR WR ONST 265 245 3 u2 oP RESET so H2 so w a H8 gt T 2 de Teo corr DISPLAY POWER 4 2 sz 3
26. four serial ports is configured for CIV bus operation and the other three are RS232 The display is housed an attractive metal enclosure to enhance electromagnetic compatibility EMC C Accessories available include a low profile roof top antenna pod an RF summing unit power distribution unit compatible GPS receiver and electronic compass 2 0 Specifications Performance specifications apply to DDF6100 when connected to the roof pod antenna DDF6073 RF summing unit DDF6070 and a narrow band fim receiver such as the ICOM R7000 R7100 or R8500 Frequency range Bearing display Bearing display rate Bearing accuracy 1 sigma DF sensitivity typical Bearing averaging selectable Antenna sweep rate RF attenuator selectable Audio input range Audio output S meter input range Serial interfaces Power requirement Current consumption Operating temperature display Dimensions display HxWxD Weight display 88 1000 MHZ using appropriate length whips and antenna spacing 16 LED circle and 3 digit LED display 2 Hz 5 degrees 130 dBm continuous signal 126 dBm pulsed signal 1 2 5 10 or 20 samples 300 600 1200 or 2400 Hz 0 or 20 dB 0 01 to 0 6 VRMS 0 5 watts maximum 10 to 10 VDC 1 DCE 5232 port for laptop 3 DTE RS232 port for GPS compass etc 1 CIV port for receiver 11 to 14 VDC 1 0 amp 0 to 50 degrees C 108x171x235 mm 4 25x6 75x9 25 in 1 9 Kg 4 1 Ibs
27. returned bearing data HH is the check sum This is given by two ASCII digits which is the 8 bit exclusive OR of all characters between the and characters In the DDF6100 bearing and signal strength are computed on a 0 5 second interval The sampling interval of the serial readout command 0 may be shorter or longer that 0 5 second and the validity flag Z provides a method to synchronize the two clock cycles After the data is read out serially the validity flag is set to zero so if a second readout is made before the bearing is updated the validity flag Z is returned equal to 0 After the data is updated within the DDF6100 the validity flag is set to 1 if the data meets the signal to noise requirement and it is set to 2 if it does not It is recommended that the PC which is requesting the bearing data do so at a rate of approximately twice per second and that it ignore any returned data that does not have a validity Z equal to 1 Command 0 causes the bearing message to be sent once while command 980 causes the same message to be output automatically from the direction finder whenever the bearing is updated This is the default mode for the DDF6100 and it is disabled by command number 981 6 3 1 2 Hardware Message 24 The response to command 982 identify hardware is the NMEA 0183 message DFHW XXXXX HH lt CR gt lt LF gt In this message XX XXX is the hardware model with revision letter for example 6100 HH is the check sum
28. 02 4 eae 7 13 RMCA gt gt 3 D7 5 0 7 07 2 24 G 9 gt S232 0 2 ROI T p Ti050H 9 16 ROL gt lt 26 158 WRI w 0136 1135 1000H 3 2 5 3 2 ts gt D gt 1 5 CLOCK 01774 5 01774 5 MAS A Yo SRO MAS 2 2 02 77 6 027 5 MAS B Yi gt 8 mmo gt 2 R S MAG 3 WAVE 038 9 20 035 9 MAT SELFIST gt 2 120 05 TEREN 17 E 17 00 7 gt mw gt 00 7 vec 1 20 657 0514 15 08 774 15 E yg pit pa MUX CSI D5 6 ATT ON 5 05 W S RS232 IN 06478 8 we 65232 007 CSI ome 0 oe oe 51 We x w Waveform Signals 8 1070H RS232 906 754 00 10609 10208 3 3 ma 07 757 7 gt oP 0268 aH 4 a 02 Bx 5 BF pa D p a SOCOM gt 2 csa vec 3 R 06 774 Es 9 6 8 4 1 oa ex 07 ex 0103 OL 7 a ga e gt 13600 as oF 03 4 1 2 RTS Ha x oP
29. 25 Deg LED ROW 5 2925 Deg LED ROW 5 TED ROW 0 LED COL 5 3 LED ROW RED RED LED ROW 3 LED 6 2 07 015 ROW 135 Deg LED_ROW 6 315 Deg 6 10 LED_ROW 2 LED ROW 5 ROW 6 eoi ROW RED RED 7 6 9 LED_ROW_7 2 016 LED ROW 4 7 cp LED ROW 3 LED COL 0 1575 Deg LED ROW 7 337 5 Deg LED ROW 7 Sten Colt 5082 7641 LED COL 1 TED COL RED RED SHE TED_COL3 2100025 10005 ____ 031 026 econ LED ROW 0 LED_ROW_0 020 1 1 LED ROW 0 1 YELLOW YELLOW LED ROW 5 2 80 030 025 1 LED 1 2Avgs LED 1 LED COL 6 3 YELLOW YELLOW LED ROW 6 029 D24 10 LEDROW2 600 Hz LED ROW 2 5Avgs l LED_ROW 2 LED ROW 7 9 YELLOW YELLOW g LED COL 3 LED ROW 4 7 LED ROW 3 D28 023 5082 7611 1200 1 LED ROW 3 10 Avgs 1 LED ROW YELLOW YELLOW 027 022 2400 He AA LED ROW 4 20 Aws Ax LED ROW 4 021 SMETER LED ROW 0 1 YELLOW YELLOW LED ROW 5 2 3 LEDROWI 083 032 Pulse Mode LED ROW 6 cal LED ROW 7 LED 7 RED RED LED ROW 6 017 10 Power On LED ROW 7 Aten LED ROW 6 LED ROW 7 6 9 YELLOW RED Ea eh LED ROW 4 7 ce 8 LED ROW 3 5082 7611 DDF6101 LED Displays 38 R128 1 0K Wa AUDIO SELFTST EA gt R128A 49 9K R128B 1 0K
30. 6 32x5 16 screws provided with the summer Connect the coax cable and control cable supplied with the RF summer and route these out through one of the rectangular holes on one of the rear support brackets From the following table locate the antenna elements and mounting locations for the frequency you will be using and mount the antennas Frequency MHZ Antenna Elements 13 88 108 WBFM 686 mm 27 inch whips 5 16 24 stud mounts on 538 mm 21 2 inch square 44 108 136 AM 125 175 NBFM 445 mm 17 5 inch whips 5 16 24 stud mounts on 269 mm 10 6 inch square 43 5 3 inch square 2 350 500 152 mm 6 inch whips 500 700 NBFM 1 TNC mounts 50 8 mm 2 0 inch square 1 700 1000 NBFM 73 mm 2 875 inch stubs 5 16 24 stud mounts on 135 mm Connect the coax jumper cables with the right angle TNC connectors 7 If you are using the antenna in the 700 1000 MHZ range these cables are not used otherwise connect one end of each cable to a TNC connector on the RF summer Connect the other end to the TNC connector that corresponds to the small middle or large antenna mounting square See Figure 4 3 Set the ground plane on the car roof with the RF summer cables at the rear of the car Run the cable straps 11 through the door frames or windows and fasten them securely inside the car See Figure 4 4 Set the cover 14 down over the ground plane and fasten it with the four latches 12 Be sur
31. D3 zia AGND2 ED cast 01 EG C453 4ANT 01 9 1 AUX INPUT 1418 S METER INPUT 92 5 GND AUXIN SMETER nA 4 1437 Rt BEAD3 6458 3 5mm Jack 49 3 5mm Jack 01 T T 01 AUDIO INPUT BEAD3 AUDIO 182 9 VIN gt VINRTN 3 4 NRN 499K 1 35mm Jack INT SPKR 5 6 EXT SPKR 7 SPKRRIN 5 aed AUX N AUDIO 1419 YY gt CIVRTN 1438 BEAD3 3 5mm Jack C459 01 6455 cage uw EXT SPKR 01 BEAD3 6 EXT SPKR we INTSPKR SPKRRIN FONN 1439 T BEAD3 3 5mm Jack 6456 TS 1 01 6 DSR 01 RXD 2 RXD A T RTS 3 XD 8 4 DIR 9 RD 1442 Antenna Switch 5 GND BEAD3 9 9 1 Ring DEP DTE 9REM2 aN Tip 14 BEAD3 Shall 3 5mmSterio 2 NOTES ANTENNAS DDF606X 4 ELEMENT ANTENNA COMMUTATOR ASSEMBLY CABLE TNC BNC 2 DDF6116 CABLE CONTROL MOBILE 2 22 DDF6119 DDF6115 DDF606X Antenna Schematics 50 Channel A RF Sum Co TNC oy RF in 2 Control a DSAG115ASCH
32. DDF6100D RADIO DIRECTION FINDER USER MANUAL t t 1 DOPPLER SYSTEMS INC PO Box 2780 37202 Bloody Basin Rd Carefree Arizona 85377 Tel 480 488 9755 Fax 480 488 1295 Copyright 8 1997 Doppler Systems Inc All rights reserved Issue 200104 Doppler Systems Inc European Union Declaration of Conformity Industrial Equipment The EU Directives covered by this Declaration 89 336 EEC Electromagnetic Compatibility Directive amended by 92 3 amp 93 68 EEC The Product Covered by this Declaration Doppler DDF6 100 Radio Direction Finder including Antenna and Accessories Models 6070 6072 and 6073 Ser 5555 6001 7000 The Basis on which Conformity is being Declared product identified above complies with the requirements of the above EU Directives by meeting the following standards 50081 2 1994 Electromagnetic Compatibility Generic Emission Standard Part 2 Industrial Environment 55022 1995 Radiated Emissions Test in accordance with the limits specified in 55022 1995 for Class Devices and performed using the methods and procedures detailed in CISPR 22 1993 including Correction 1 Feb 1995 and Amendment 1 April 1995 using instrumentation equipment and facilities in conformance with the requirements of CISPR 16 1 1993 EN 50082 2 1995 Electromagnetic Compatibility Generic Immunity Standard Part 2 Indu
33. I 035 9 ADM 08000 u n 17 55 6 17 16 une 2 ee 2 paTaMone 128 STATUS 1 0 1 9 p g 1030H 5 gt 0811 AD 6 RIC 0810 TAHCTSTA s E Dee 1 2 088 COM 087 2 D1 R144 0 REFIN 086 C193 5 1 2 s Lt 1 085 7 03 3 499 499 10V INPUT DB4 10 54 20V INPUT 083 R135A unse 7 Aa 4 06271 11 4 080 8 R142 2 255K Wa L347 R135 SMETER gt 10M 3 R140 402K 511K R133 lt lt 18600 499K y A Wa 40 04715 DDF6102 Demods amp A D gt AGND Wa DGND 0133 R145 wee 8 CLK 40 0101 TIL CLOCK SZ Yellow 0 15 vec 5 19 lt Ay 70 E DATA utes 51 21 _ 3 2 6 2 RES 4 90 5 58 23 READY 0102 eae EJ 8 1 ZN READY 8 713 MA READY 4 Reapy me Mix
34. The CAL light will remain ON Then press the BRG 0 switch and the bearing should read 0 degrees Repeat this procedure for sweep rates of 300 600 1200 and 2400 Hz Do not try to calibrate the bearing to 0 with the sweep rate set for 0 this is a special command that is used to restore the factory default parameter settings see above The direction of rotation reverses every 0 5 second This feature allows non linearities in the receiver to be compensated by averaging consecutive bearing readings Ifthe number of averages is selected to be 1 the individual bearing data will be displayed and if the system needs calibration the readings will alternate between two different values Be sure to recalibrate the unit if you see this occurring Normally you should operate the direction finder with 2 or more averages selected in order to obtain the benefits of the clockwise counterclockwise rotation If the S meter is not connected to the receiver or if it has not been calibrated the S meter will display a dash To calibrate the S meter the CAL switch must first be enabled then the SIG 9 switch pressed when a strong signal is present and the SIG 0 switch when no signal is present 5 3 Direction Finding in the Continuous Mode Pulse Mode OFF 19 The simulated rotation of the antenna by the direction finder produces tone in the receiver s audio output which you will not normally hear because it is filtered out in the direction finder befor
35. a a few feet away in the same band will probably damage the unit while transmitting 5 watts inside a car will not Transmitting a few watts from a nearby antenna on a different band from the direction finder antenna will probably not hurt the unit Vertical separation helps also so if you can place the transmit antenna on the trunk lid or boot of a car and the DF antenna on its roof the coupling will be greatly reduced When in doubt it is best to run a test by connecting a mobile antenna output into an RF power meter and checking the power induced from the transmitter If it is more than 100 milliwatts relocate the transmit antenna 10 4 4 Phone Jacks The phone jacks used DDF6100 are Switchcraft ATini Jax onnectors These are commonly referred to as 3 5 mm connectors but they actually measure 3 58 mm 0 141 inch diameter Other 3 5 mm connectors such as are used on ICOM receivers measure closer to 3 50 mm 0 138 inch diameter For reliable operation mating plugs must be Switchcraft Type 750 which are supplied with the DDF6100 These plugs mate with the 3 5 mm jacks used on the ICOM receivers but the ICOM 3 5 mm plugs do not reliably mate with the Switchcraft Tini Jax connectors used in the DDF6100 Cables 40DK40 3 5 mm to 3 5 mm and 40DK25 3 5 mm to RCA plug are built with the Switchcraft 750 style plug 4 5 ICOM R7000 Receiver Modifications for S meter Output The ICOM R7000 can easily be modified to provide an S meter ou
36. able RTS CTS DSR DTR CD and RD are not connected The default baud rate is 4800 with 8 data bits no parity and 1 stop bit The baud rate may be set to 1200 2400 4800 or 9600 parity to none even or odd the number of data bits to 7 or 8 and the stop bit length to 1 or 2 by serial commands 6 2 3 Connector J4 port 1 Connector J4 is 3 5 mm jack connected for CIV bus operation Transmit and receive voltage levels are TTL The output is pulled up to 5 VDC through a 5 1 K resistor 23 The default baud rate is 1200 with 8 data bits no parity and 1 stop bit The baud rate may be set to 1200 2400 4800 or 9600 parity to none even or odd the number of data bits to 7 or 8 and the stop bit length to 1 or 2 by serial commands 6 3 Message Protocol 6 3 1 Direction Finder Messages Serial commands to the direction finder are in ASCII format These messages begin with character and end with a carriage return lt CR gt Line feeds lt LF gt are ignored All direction finder commands are listed in Table 6 1 A typical command requesting the bearing angle command 0 is 0 lt CR gt or in hex 24 30 13 Responses from the direction finder are discussed below 6 3 1 1 Bearing Message The response to commands 0 or 980 DF data request is the NMEA 0183 message DFBRG XXX Y Z HH lt CR gt lt LF gt In this message is the bearing angle is the signal strength and Z is a parameter indicating the validity of the
37. band fm receiver This sweep rate is useful however if you need to DF a wide band fm signal for which you must of course use a wide band 150 KHz bandwidth receiver The front panel display updates twice every second Bearings are retained for 10 seconds and then the display is blanked To distinguish an updated bearing from a retained bearing of the same value the decimal point on the display alternates ON and OFF whenever the display is updated If the number of averages is set to 1 then the bearing display is that calculated by the software during the preceding 0 5 second interval The processor can also calculate a moving average of the preceding bearings This will cause the bearing angle to be more stable but it will also be less responsive to actual changes in the bearing As discussed in Section 5 2 the antenna sweep direction is reversed every 0 5 seconds to permit reduction of errors due to non linearities in the receiver While the direction finder can be used with the number of averages set to 1 it is usually best to set it to 2 or higher to obtain the benefits of averaging opposite direction sweeps The preamplifiers used in the direction finder antenna electronics have a gain of about 12 dB and a noise figure of about 3 6 dB These are very broadband devices which can generate intermod products if very strong input signals are present Depending on the location of the antenna and the frequency band being used you may notice an inc
38. e it is passed to its speaker you can hear it if you wish by removing the audio plug from the receiver s external speaker output The DF measures the magnitude and the phase of the tone every 10 milliseconds and calculates bearing angle from this data every second The DF software determines whether a signal is present by examining the statistics of the sampled data If the average amplitude of the tone exceeds the variation of the data about the average then it is concluded that a signal is present and the bearing is displayed This scheme makes the system independent of the receiver s volume control setting so the volume may be set at any comfortable level In addition the receiver s squelch can be set normally or it can be opened so that the receiver is unsquelched Ifno signal is present the DF will detect this condition from the lack of a stable sweep tone and will not update the display The sweep rate can be adjusted set to 300 600 1200 or 2400 Hz from the front panel Maximum sensitivity and stability is obtained at the higher sweep rates but there may be occasions when a lower sweep rate is desired For example if the signal itself contains a 1200 Hz tone you would want to use a sweep rate other than 1200 Hz A sweep rate of 2400 Hz results in a peak deviation that exceeds the 15 KHz bandwidth of most narrow band fm receivers You will notice distortion of the transmitted audio with this sweep rate when receiving with a narrow
39. e that the cover is firmly attached to the car before driving Route the cables from the RF summer through a rear window 4 1 2 Antenna Installation without Roof Pod 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 Systems antennas DDF6061 6062 and 6068 all use the same magnetic mount base and cover the frequency ranges 88 136 136 500 and 52 88 MHZ respectively Cut the whips to resonance using the chart provided with the antennas and space them between 1 8 and 1 4 wavelength apart on the car s roof To avoid damage to the input circuitry used in the RF summer touch the antenna ground plane before attaching the whips to the magnetic mounts It is important that the vehicle provides at least 1 4 wavelength of ground plane outboard of the antennas Place the RF summer DDF6060 on the car with the cables oriented towards the rear of the car Connect the magnetic mount antenna cables to the corresponding TNC connectors on the RF summer That is the left front antenna to the left front connector etc Locate the summer near the back of the car the lid of the trunk or boot so that the magnetic mount antenna cables do not have excessive slack Secure the four antenna cables together wit
40. f the tone data in the selected 150 millisecond interval This method permits the receiver volume to be adjusted without affecting the bearing and the receiver squelch can be set normally or left open Maximum sensitivity is obtained with the receiver unsquelched Consecutive bearings may be averaged The number of samples averaged may be selected to be 1 2 5 10 or 20 Unlike the continuous mode the antenna sweep direction is not reversed every 2 second 5 5 Homing When the direction finder is used to home signal source the following guidelines should be followed Take an assistant with you Don t try to read the display and drive at the same time Try to keep out of high multipath areas buildings etc as long as possible Avoid strong interfering signal locations broadcast stations etc Keep moving when the signal is present Multipath averages out spatially not temporally 5 6 Auto Triangulation See the manual that accompanies the Auto Track Software program for directions on operating the DDF6100 to Auto Triangulate It is possible to calibrate the direction finder and to change operating parameters sweep rate etc from the laptop computer using this program Bear in mind that when used in this mode the DDF6100 will be calibrated to display bearing relative to North so looking at the front panel LEDs can be confusing Another difference in operation between the homing mode and auto triangulation operation is that y
41. h nylon ties so that they are not free to move around and touch the antenna elements Route the control and RF cables through a rear window For mobile operation in the 700 1000 MHZ band antenna DDF6067 should be mounted directly on top of the RF summer This antenna provides an extended ground plane a wind shroud and four stub type antennas built into TNC connectors Place the assembled RF summer antenna in the center of the car roof Be sure to use the safety strap provided with the DDF6067 antenna 4 1 3 Receiver and Direction Finder Connections Place the DDF6100 and the receiver where they are easy to operate and connect the coax cable from the RF summer to the receiver s antenna connector and the control cable from the RF summer to J8 on the direction finder See Figure 4 1 or 4 2 Connect the receiver s external speaker output to J3 on the direction finder using one of the 3 5 mm cables supplied and connect the receiver s AGC output if available to 15 using the 3 5 mm to phono plug cable supplied The AGC output is available on the ICOM R7100 and R8500 receivers if you are using the R7000 you can add it to the Spare output connector as described in paragraph 4 5 below The DF power is supplied to J7 from the cigar lighter using cable DDF6110 If you want to power the receiver from the same outlet use a adapter 4 2 Auto Triangulation Installation with GPS The system may be arranged for automatic triangulation with o
42. i NZa MF10 NZa R101 21 27 R12 4 0K R123 as ams 1025 Wa 39 DDF6102 Audio Processing AUXIN 2 GATE GAIN 1 00 C135 GAIN 4 R106 TAU 4MS DMODO gt 2 N 5 3 GATE 028 255K 102K ma BIN U139A 0672 gt 4 2 1 N R127 Wia gt pog 7 DEM SIN 4 GHZ 499k s R118 Far R119 LF347 34K R139 RED Wn 16 2 R104 R115 GATE 02215 ut39c R136 8 255K 102K N Wa 06217 10 R105 2 1080 01390 0672 N 8 4 7 7 8 ne 9 N 2 8 5 1 06212 10 Far 9 R125 R137 39K Wa WA 1040H lt a 2 une 3 2 ADMO 4 ADM
43. ialization cies tera 19 5 2 Calibra 19 5 3 Direction Finding in the Continuous Mode Pulse Mode OFF 19 5 4 Direction Finding in the Pulse 21 o m a Toes sales 21 5 6 Auto Triangulation 21 GU 23 6 l Introduction 23 23 6 9 Protocol 24 6 4 Multiplexing and Control Characters 27 TO Lest 33 IR OY cy 1G 65 161 n 34 34 8 2 EPROM Replacement 34 1 0 Introduction The DDF6100 is a high performance radio direction finding system that operates using the simulated Doppler principle Four omni directional antennas are arranged in a circular array and are connected to an RF combining or Aummer ircuit The summer combines the antenna signals in a way which simulates the continuous rotation of a single antenna element about the axis of symmetry of the antenna array 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 s
44. in with at least two prefix characters or it will be ignored The Auto Track software program uses the ICOM receiver frequency command message and looks for the ICOM CIV acknowledgment message Refer to the ICOM CIV reference manual for further details on the structure of CIV commands for their receivers 6 3 3 GPS Messages The GPS receiver must provide two messages These are the NMEA 0183 GGA and VTG messages These are to be output at a rate of once per second or slower 6 3 4 Compass Messages If a compass is used it must provide the message at a rate of approximately once second 26 6 4 Multiplexing and Control Characters Data between the PC and the DDF6100 is transferred in packets which are multiplexed between the direction finder itself and the four serial port 1 4 These packets contain up to 15 characters in length and are of the form lt Ax gt lt n gt lt D1 gt lt D2 gt lt Dn gt where lt Ax gt is the port address that the message is coming from or going to 0 DDF6100 lt n gt is the number of bytes in the packet and is a number between 1 and 15 hex 1 through lt D1 gt lt D2 gt etc are the actual data bytes in the message As an example a typical bearing message from the DDF6100 to the PC would be encoded as follows DFBRG 1 86 9 1 4E lt CR gt lt LF gt This message has a total of 19 characters It will be sent in two packets fe fo or
45. l to noise ratio threshold used in the continuous mode to the value given by the command number 900 10 For example command 912 sets the threshold to 1 2 30 576 984 Enable test input disconnects receiver input eso 31 7 0 Test Software The DOS utility program SERCMD EXE is included to permit testing of the serial interfaces This program decodes and displays the packetized messages from the five sources the DDF6100 itself and the four ports 1 4 and it provides a means for sending test messages to each of these ports from the PC The program displays the data as it is received and de packetized from the direction finder port 0 and the four external ports 1 through 4 in five scrolling Avindows which comprise most of the screen If the DDF6100 is in its default state and displaying a bearing the bearing data will be automatically sent to the PC and displayed in the port 0 response window at the very top of the screen At the bottom of the screen are two command lines The first contains a fixed CIV message which changes the frequency of an ICOM R7000 receiver to 162 550 MHZ Pressing the F1 key will send this message to J4 port 1 Ifan R7000 receiver is connected to this port and properly programmed for CIV address baud rate etc it will respond with the ICOM acknowledgment message which will be displayed in the port 1 response window The second command line permits entry of any
46. on at the front of the ground plane Tie the cable bundle together using some nylon ties when you are satisfied with the routing 4 2 2 Antenna Installation without Roof Pod Mount the direction finding antennas and RF summer on the roof as described in section 4 1 2 above Place the GPS antenna on the car roof Put it at least 0 3 m 1 ft away from the direction finding antennas and route its cable through the open window used for the other cables You cannot use the compass without the roof pod 4 2 3 Receiver Direction Finder Laptop Computer and Power Distribution You will need to assemble two simple cable assemblies yourself to supply 12 VDC to your receiver and laptop computer via the power distribution box DDF6072 The connectors required are provided with the DDF6072 and the wiring is shown in Figure 4 7 Place the DDF6100 the communications receiver the GPS receiver and the power distribution box in the rear seat of the car and the laptop computer in the front Connect the coax cable from the rf summer to the receiver s antenna connector and the control cable from the RF summer to J8 on the direction finder See Figure 4 5 or 4 6 Connect the receiver s external speaker output to J3 on the direction finder using one of the 3 5 mm cables supplied and connect the receiver s AGC output if available to J5 using the 3 5 mm to phono plug cable supplied The AGC output is available on the ICOM R7100 and R8500 receivers if y
47. ot connected or if the display has not been calibrated 47 The antenna rate of rotation can be increased or decreased by pressing the up or down arrows here When a sweep rate of 0 is selected all antennas are turned ON This mode is useful in detecting a very weak signal but bearings are not displayed 8 This switch enables or disables the calibration mode The calibration mode must be enabled for the bearing and s meter calibration switches to be effective 49 Pressing this switch when the calibration mode see 48 above is enabled causes the present bearing to be set to 0 degrees Momentarily pressing this switch when the calibration mode is not enabled causes the present bearing to be incremented by 1 degree If the switch is held down the bearing increments in steps of 10 degrees 410 This switch calibrates the S meter to 9 on the present signal provided the calibration mode 15 enabled see 48 above 411 This switch calibrates the S meter to 0 on the present signal provided the calibration mode is enabled see 48 above 12 Pressing this switch changes the direction finder alternately from the Continuous and Pulse mode and back The DF should be used in the Continuous mode on most signals voice unmodulated carriers etc and in the Pulse mode when the signal is known to be on for 150 milliseconds every 0 5 or more seconds 3 This switch causes a 20 dB attenuation of the RF input to the commutation electronics 14 J1
48. ou are using the R7000 you can add it to the spare output connector as described in paragraph 4 5 below Connect the laptop serial port to J1 on the DDF6100 using the 1 8 m 6 ft cable DDF6161 6 supplied with the direction finder Connect the serial port on the GPS receiver to J11 on the direction finder using the 0 6 m 2 ft cable DDF6161 2 supplied with the GPS receiver DDF6074 Connect the serial cable from the compass if used to J12 on the direction finder Connect the power cables from the power distribution box DDF6072 as shown in Figures 4 5 or 4 6 When disassembling the equipment it is a good idea to leave the GPS receiver connected to the power distribution box J2 This is because the power box contains a Lithium battery that is used to maintain the status of the GPS and it will permit the system to reacquire the satellites much faster 4 3 Interaction from Other Antennas It is a good idea to remove any other antenna from the car when using the direction finder to avoid its affecting the accuracy of the system If you need to use another antenna try experimenting with its location to minimize the coupling with the DF antenna It is possible to damage the RF summer if more that a few hundred milliwatts of RF power is induced into its input The preamps used are rated at 100 millliwatts maximum input and we provide additional protection that increases the rating to about 2 watt Transmitting 10 or more watts from a mobile antenn
49. our strategy for driving will be different With homing you generally drive 21 in as straight a line as possible toward the emitter while when auto triangulating you will generally circle or spiral around the emitter 22 6 0 Serial Interfaces 6 1 Introduction Serial communication ports are provided at five rear panel connectors Port 0 is connected to J1 port 1 to J4 port 2 to J2 port 3 to J10 and port 4 to J11 The PC used to control the DDF6100 must be connected to port 0 11 If channel control from the PC is desired the receiver must have a CIV interface and it must be connected to port 1 J4 The GPS and or compass should be connected to ports 2 3 4 J2 J10 or J11 6 2 Hardware Interfaces Figure 6 1 shows the wiring of serial interface connectors J1 J2 J10 and J11 6 2 1 Connector J1 port 0 Connector is DE9S wired as Data Control Equipment DCE voltage levels and impedances RS232 may be connected to the serial port of a PC using a straight through DE9P to DES cable RTS CTS DSR DTR CD and RD are not connected The port 0 baud rate is fixed at 9600 with 8 data bits no parity and 1 stop bits 6 2 2 Connectors J2 J10 and J11 ports 2 3 and 4 These connectors are DE9P wired as Data Terminal Equipment DTE Transmit and receive voltage levels and impedances are RS232 They may be connected to the GPS serial interface using a straight through DE9P to DEYS c
50. ource the frequency decreases The amount of frequency change deviation is related to the speed of rotation and the diameter of the antenna array while the modulation frequency is equal to the frequency of rotation the antenna sweep frequency When connected to a narrow band communication receiver the sweep frequency is present on the audio output To obtain the bearing angle the direction finder processes this audio output Many features are present in the DDF6100 C The unit may be used as a standalone radio direction finder for homing on a signal or it may be used with the supplied Auto Track software program and a compatible GPS receiver to triangulate C The sweep frequency may be set to 300 600 1200 or 2400 Hz to avoid tone frequencies that may be present in the signal modulation Advanced signal processing is used to detect the signal with the receiver either squelched or unsquelched Both continuous and 150 millisecond pulsed signals can be processed C The sweep direction automatically changes from clockwise to counterclockwise and back to compensate for asymmetries in the receiver An internal audio amplifier and loudspeaker are provided for monitoring the signal and a sharp notch filter removes the sweep frequency tone for clarity When used with the supplied Auto Track software program the direction finder provides a serial data multiplexer between the laptop computer and up to four external devices One of the
51. r incidental or consequential damages Doppler Systems radio direction finding equipment is designed to be used for the location of interfering radio signals It is not intended to be used as a navigation aid and in particular it is not to be used for aircraft or marine navigation Accessories Included 1 User Manual 1 12 VDC 1 5 amp 110 VAC wall mount power supply North American models 1 DC power cable DDF6110 automobile cigarette lighter plug to 2 5 mm plug 2 3 5 mm phone jack to 3 5 mm phone jack cable 400 40 1 3 5 mm phone jack to RCA phono jack cable 40DK25 2 3 5 mm phone jack 750 1 Serial data cable DDF6161 6 1 Auto Track Software disk and manual 1 Test Software disk Table of Contents 1 0 Introduction 1 2 0 Specifications 2 3 0 wari Connectors 3 7 44 Homing Installation OG 4 2 Auto Triangulation Installation With GPS 9 4 3 Interaction from Other Antennas 10 AA Phone ne 11 4 5 ICOM R7000 Receiver Modifications for S meter Output 11 19 SV init
52. r without the roof pod antenna The roof pod is preferred because it supports the direction finding antennas GPS antenna and if used the compass Figures 4 5 and 4 6 show the connections required with and without the roof pod 4 2 1 Antenna Installation with Roof Pod Assemble the roof pod direction finding antennas as discussed in section 4 1 1 above Mount the GPS antenna at one of the four corners of the platform 49 Use the four 4 40 1 4 screws provided Usually it is best to mount it near the front of the vehicle and the compass if used at the rear but this can be varied to suit your vehicle Route the cable through the hole in the plate next to the antenna then out through the rectangular hole used for the other cables at the rear standoff bracket If you are using the compass DDF6075 mount it at one of the two locations 4 10 along the front or rear of the ground plane Usually the location near the rear is best Use the two 10 32x3 8 screws provided Route the compass cable through rectangular slot in the plate next to the compass then out through the rectangular hole used for the other cables at the rear standoff bracket The pod provides about 50 mm 2 inches of clearance between the compass and the car s steel roof which should be adequate to avoid serious distortion of the Earth s magnetic field If during the calibration of the compass you get a poor environmental scoring try moving the compass to the alternate locati
53. rd Connector sw 3 zi 2 gt osw 17 2 3 4 gt AG 5 6 E EC OREM E sE NINS 7 EG 9 10 lt 350 n 12 8 gt 2 2 1 2 ANT Sw gt 7 R110 TXORM 1 511K 4 9REM2 360 8 gt 24 gt 1 VINRTN 1002 Den rok OREM EXT SPAR 5 SPKR RIN EaR Sw CORN 0 gt AUXIN lt CSMETER ANO gt ZADO DDF6102 Connectors 45 0 2 TXDB C196 re 62 ROB 5 6 RXDD 8 4 RXD1 15 v v TXORM 2 TXD1 6 7 RXD1 o 8 1 vec 2 DGND gt 2 2 RXDD RD lt 2 2 TOB L 17 9 16 RXDB TTUCMOS MAX208 85232 vec vec R107 5 1K gt 0101 202224 2 2222 49 9K DDF6102 Serial Interfaces 46 vec
54. rease in the noise level of the receiver which is due to mixing of two strong input signals for example a broadcast fm station and a television video or audio signal The intermod can be reduced by enabling the attenuator switch on the direction finder which applies 20 dB attenuation between each antenna element and its associated preamplifier 20 5 4 Direction Finding the Pulse Mode The pulse mode logic has been optimized for a pulse duration of 150 milliseconds and a period of 0 5 second This type of pulse is frequently generated by the type of transmitter or beacon used for target tracking It is possible to change the pulse duration and period to other commonly used values see Section 6 4 Enter the pulse mode by pressing the Pulse Mode switch As in the continuous mode the processor again samples the sweep frequency data every 10 milliseconds and calculates the bearing angle each 0 5 second To determine whether a signal pulse was present during the 0 5 second interval a correlation calculation is made The amplitude of the tone is calculated over every 150 millisecond subinterval and the subinterval with the highest value is noted The amplitude is then calculated over the 350 millisecond interval that does not include the selected 150 milliseconds The two averages are then compared and if a criterion is exceeded it is concluded that a pulse occurred during the display interval The bearing angle is then calculated from the phase o
55. s Egan European Representative for Doppler Systems Inc PO Box 2 Seaton Devon EX12 275 ENGLAND Telephone Fax 1297 62 56 90 Attention The attention of the specifier purchaser installer or user is drawn to special measures and limitation to use which must be observed when product is taken into service to maintain compliance with the above directives Details of these special measures and limitations are in the product manual Warranty Information Doppler Systems Inc 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 If a defective part or design error causes your radio direction finder to operate improperly during the one year warranty period Doppler Systems Inc will service it free of charge if returned at owner s expense If improper operation is due to an error on the part of the purchaser there will be a repair charge Doppler Systems Inc are not responsible for damage caused by the use of improper tools or solder failure to follow the printed instructions misuse or abuse unauthorized modifications misapplication of the unit theft fire or accidents This warranty applies only to the equipment sold by Doppler Systems Inc and does not cove
56. strial Environment IEC 801 2 1991 Electrostatic Discharge ESD Immunity Test performed in accordance with the instrumentation equipment facilities limits i e Criteria methods and procedures specified therein i e 8 kV Air Discharge Level 3 and at ali Lower Levels and 4 kV Contact Discharge Level 3 and at all Lower Leveis ENV 50140 1994 Radio frequency Electromagnetic Fields Immunity Test performed in accordance with the instrumentation equipment facilities methods procedures and limits specified therein Le 3 with 80 AM Modulation at a 400 Hz rate at both H and Polarization over the frquency range 80 MHz to 1000 MHz Criteria A 801 41988 Electrical Fast Transients EFT Test in accordance with the instrumentation equipment facilities methods procedures and limits Criteria specified therein i e Direct Injection of 1 EFT on DC Input Ports and Capacitive Clamp Injection of 1 kV EFT on tong gt 3 meters Non process Control I O Lines and Capacitive Clamp Injection of 1 kV EFT on Process Measurement and Control Lines 50141 1994 Radio frequency Common Mode Immunity Test performed in accordance with the instrumentation equipment facilities methods procedures and limits specified therein i e 3 Virus with 80 AM Moduiation at a 400 Hz rate over the frequency range 150 kHz to 80 MHz Criteria A prETS 300 339 1993
57. tput for the DDF6100 Remove the top cover and locate the Main Unit PWB on the left side of the receiver and the spare RCA phono jack J7 on the rear panel Solder 5 1 resistor to the center pin of J7 and solder an insulated wire to the other end of the resistor Route the wire to the topside of the Main Unit and carefully solder the other end of the wire to pin 1 of IC4 IC4 is an 8 pin DIP op amplifier type NMJ4558D Solder the wire directly to the IC lead using a minimum amount of heat and a very small tip iron On the ICOM R7100 or R8500 you can connect the S meter input directly to the AGC output jack 11 2026073 Roof Pod Antenna ZEY 0056070 PTN 9 KS DDF6116 12 DDF6118 12 Coax Cable Control Cable 1 1 1 1 1 1 1 9121013111412 513 6 4 7 518 48 400 40 Ext Spkr 00 6100 Display Processor 400 25 5 fe New gt DDF6110 _ Power Cable 2 Sige 4 Adapter to Auto Power Plug Figure 4 1 Cabling for Homing with Roof Pod 12 2026061 6062 6067 or 6068 Antenna DDF6060 RF Summer DDF6116 12 Coax Cable DDF6118 12 Control Cable Ant 8 le 40DK40 J3 Ext Spkr
Download Pdf Manuals
Related Search