Home
PDF file DDS Instructions in (English)
Contents
1. 15 Apply 12Vdc power to J2 Measure 5 volts across C7 if not 5V then fix the problem before proceeding 16 Install the surface mount DDS chip optionally installed by kitsandparts Please be carefull installing the AD9834 Align the chip on the SMT pad PIN 1 toward R12 Tack solder one corner of the DDS chip Solder the remaining pins to the SMT pad Use solder wick to remove solder shorts Review soldering mess using high power magnifying glass optionally check for shorts using ohm meter _ _ AD9834CRUZ 17 Install type 61 ferrite binocular above R12 There are two binoculars in the parts kit one has rounded corners and is shiny black the other has sharp corners and is dull black The shiny rounded corners ferrite binocular is a type 43 the other is a type 61 Cut 8 inches of 30 GA red wire and insert 6 complete turns through the 61 binocular The binocular holes are small so make sure the turns are tight to allow additional winding to be added One turn is defined as one wire running through BOTH HOLES of the binocular in a U patern Cut 4 inches of 30 GA green wire and insert 3 complete turns through the 61 binocular The completed transformer should have 2 red wires coming out one end of the binocular and 2 green wires on the other end Strip the insulation off the wires all the way down to the body of the binocular core Tin the wires L1 Insert the BN 61 2402 binocular transformer red wires t
2. R20 51 Q Green EUZUZWSNE leck POOE _ R21 3 3 Q 3R3 Orange Orange Gold Gold Note If the DDS Receive output drives a dBM Diode Ring Mixer then place a jumper wire at R31 else if the DDS Receive output drives a 602 Gilbert Cell Mixer then install resistors R29 31 33 else design your own Receive output level resistor pad R29 1000 EYZTGUOIWESEFES E mc _R31 750 SS Ee Gol R33 220 E e a colo Note If the DDS Transmit output drives a 7dBM Diode Ring Mixer then place a jumper wire at R32 else if the DDS Transmit output drives a 602 Gilbert Cell Mixer then install resistors R30 32 34 else design your own Transmit output level resistor pad R30 100 0 ESM e ETJZTRE R32 75O EOSS E EET R34 220 E a 4 Install three 14 pin DIP sockets Position the socket notches at PIN 1 14 and solder 5 Install the 20 48 MHz Crystal about 1 32 inch above the PCB Insert the Crystal in the PCB and tilt it hold with one finger and solder Straighten the XTAL 6 Install the following capacitors on the digital side right side of the PCB ____C1 4 5 6 7 100n yellow axial lead bypass capacitors C2 40p yellow trimmer capacitor FLAT SIDE toward C1 picture shows a green trimmer _ C3 22p NPO axial lead capacitor 7 Install type 43 ferrite binocular below C5 There are two binoculars in the parts kit one has rounded corners and is shiny black the other has sharp corners and is dull
3. 100 MHz CLOCK calibration is available through a special program http w8diz com qq fc project 9834 calc 9834 php Building Instructions 1 Inventory all Parts The Kit includes two plastic parts bags one with all the resistors the other with the remaining parts The parts bags may contain extra resistors and capacitors that are not used 1 PCB manufactured by http expresspcb com Resistors 1 4 W 1 100 R4 Brown Black jf Black cola 1 510 R22 Creen Sero l cr MEOE 1 1200 R1 E e A cola Resistors 1 8 W 1 330 R21 Orange Orange Gold Gold 2 220 R33 34 mnsa mnsa pyerygg Gold 1 519 R2O ereen G erom Eoia Gold 2 750 R31 32 Violet oreen Slack E 5 1000 R2 13 14 29 30 ES WEYEFPS Prone cola 1 3300 R18 Orange Orange Gold Gold Resistors 1 8 W cont 2 6200 R6 35 A 4 1kQ R3 49272 ESM EEN 1 27kQ R12 Violet 3 4 7 KQ R15 16 17 Violet 10 10 kO R1 5 7 8 9 10 23 24 25 26 Brown E Black E Capacitors 1 22 pF C3 1 30pF or 40pF C2 trimmer green or yellow respectively 2 100 pF C20 22 1 220 pF C21 5 10 nF C10 11 12 27 28 7 47 nF C15 18 23 24 25 29 30 9 100 nF C1 4 5 6 7 14 16 17 26 1 330 nF C13 2 4 uF C8 9 Electrolytic 1 jumper C19 instead of a capacitor Crystal and oscillator 1 20 48 MHz crystal X1 1 100 MHz oscillator X2 Semiconductors 1 ATmega88PA 20 U1 1 74HC164 U2 1 7
4. black The shiny rounded corners ferrite binocular is a type 43 the other is a type 61 Cut 4 inches of 30 GA green wire and insert 4 complete turns through the 43 binocular One turn is defined are a wire running through BOTH HOLES of the binocular Strip the insulation off the wires all the way down to the body of the binocular core Tin the wires _ _ L1 Insert the BN 43 2402 binocular filter inductor standing up and solder 8 Install Red LED at D1 Red LED note polarity flat side and solder 9 Install electrolytic capacitors C8 9 47uF note polarity and solder 10 Install 4 pin reset push putton note polaririty only fints one way into the PCB RESET Insert and solder 11 Install the 6 pin programming header to the left of C8 Solder 12 Install the 3 terminal voltage regulator in lower right corner of the PCB not labeled U3 LM7805AC note polarity Metal TAB toward C8 solder 13 Install the 16 PIN female LCD header on the left side of the PCB Before installing the female LCD header you might want to consider how and where you want the LCD to display You may want to make an extension cable by soldering 16 wires between the PCB and the female header ____Install and solder both male and female header and socket 14 Connect a 3 PIN header at J2 or connect power wires to J2 center pin is 12V wires are not supplied 12V GND wires solder L BL sil Qagagaaaagg
5. the T37 6 toroids standing up and solder 21 Install large yellow capacitor and 3 3 volt regulator C13 330n yellow radial lead capacitor U4 78L33 3 terminal voltage regulator observe polarity 22 Install low pass filter capacitors C20 22 100p C21 220p 23 Install semiconductors _ Q1 2N5109 install about 1 16 inch or 2 mm above the PCB _ _ Q2 3 2N3904 install with about 1 4 inch or 6 mm leads above the PCB Observe polarity and do not overheat D2 3 MPN3700 install the PIN diodes all the way against the PCB Observe polarity and do not overheat 24 Install the 100 MHz Clock X2 100 MHz observe polarity Squared corner points toward the lower left corner of the PCB 25 Install the Rotary Mechanical Encoder a pulled part recycled from a Panasonic AM FM Auto Radio E1 Solder 26 Install the power connection jumpers between the DDS and CPU sections of the PCB The following step installs jumpers but could be replaced with inductors to possibly reduce circuit noise VCC Install a jumper at VCC located in the center of the PCB and to the left of the trimmer capacitor _ GND Install a jumper at GND located at the lower left of the 20 48 crystal 2 Connect the DDS section to the CPU section a total of six 6 wire jumpers These connections are firmware dependent Current firmware requires the following connections PD4 Connect PD4 from the Encoder to PD4 on the ATmel CPU PD2 Connect PD2 fro
6. 805 U3 1 78L33 U4 1 AD9834CRUZ US 1 2N5109 transistor Q1 2 2N3904 transistor Q2 3 1 red LED D1 2 MPN3700 PIN diode D2 3 Ferrites 1 BN 43 2402 L1 inductor filter 4 turns 1 BN 61 2402 T1 transformer 6 turn 3 turn 1 FT37 43 T2 transformer 8 8 turn bifilar 2 130 6 L2 3 filter cores 8 turn 16 inches of 26 gage magnet wire 16 inches of 30 gauge magnet wire dual twisted wires Miscellaneous 1 Rotary Encoder E1 1 RESET pushbutton S1 3 14 pin socket 1 2x3 Program Header J1 3 3 pin power header J2 3 4 1 16 pin LCD socket 1 16 pin LCD header USER SUPPLIED PARTS three 3 feet of hookup wire 3 pin female connector for power input connection 3 pin female connector for receive RF output connection 3 pin female connector for transmit RF output connection 2 Install all 1 4 Watt Resistors Note Bend the resistor leads a sharp 90 degrees from the body R4 100 ERENT EUN BERET UGoYa GN Gold Gold R 1 120 0 Er uE ESE R22 510 ESE EN E 3 Install all 1 8 Watt Resistors Note Bend the resistor leads a sharp 90 degrees from the body R1 5 7 8 9 10 23 24 25 26 10 KQ Eo E Orange Gold __R2 13 14 100 Q Brown Black eom p cold ___R3 19 27 28 1kQ 1KO EZALE TEauuggg Gora __R6 35 620 Q Blue f g Brown cola _ R12 2 7 KQ 2K7 G ks col ___R15 16 17 4 7kQ 4K7 Yellow REZEFRETS FMGOIINWWES Gold __ R18 330 Q Orange Orange EMI Gold
7. Build this Direct Digital Synthesizer Development Kit By Diz Gentzow W8DIZ A great tutorial for adding a keypad to the DDS Kit by Bruce W8BH This manual has been prepared to be read directly on screen Use CTRL L on Acroread or similar command in other PDF readers for full screen If you want to print it please use Multiple page option to save resources Thank you N R12 R13 2K 100 Ci4j100n 2 4 g 15 42m 3 S SRI a 4 100 10n V 3U3 2 3 q 10n 6l 7 e iG 9 4k RI 9 aa 100 MHz NC vec PSELECT RESET 4 OND OUT x2 TI 6T 3T BN 61 2402 RIS oa RIG E FT37 43 Gi 8T Bi fi l r Les R23 12 10K R19 Rea c22 N5109 Te p lt pig Ree 330 51 Res a E Lc R26 oe 10K 5u A 10n 0e eN3904 V MPN3700 x2 af bey 10n 03 eN3904 y 2 Ww gt n C o lt PCS o lt RST C6zPCINT14 RESET LCD PC52 0DC52SCL2ZPCINTI3 D PCINT16 RXD PC4 ADC4 SDA PCINT12 o lt PD Di PCINTI7 TXD PC3 ADC3 PCINTI 1 a PDZ INT1I82ZINTO PC2 ADC2 PCINT1 D3 INT19 0C2B INT 1 PC1 ADC1 PCINT9 o PD4 INT207xXCK TO PCO ADCO PCINTS o lt CND GND AREF PB6 PCINT6 XTALI TOSC ACC o lt PD5 PB7 PCINT7 XTAL2 TOSC2 PBS SCK PCINTS 4HC 164 o lt PD6 PDS PCINT21 OC B T 1 PB4 MISO PCINT4 PD6 PCINT22 0CBA AI NG PB3 MOSI OC2A PCINT3 o lt PBO PD7 PCINT23 AINI PB2 S 0C1 B PCINT2 o lt PBI PBQ PCINT CLKO ICPI PBL OC1A PCINTI
8. DS Kit as a Sig_Gen or VFO Click on the Development Platform Link for information to update and or modify the firmware
9. i Program o lt M1 SO by W8DIZ 99 Apr 2010 D SCL General Notes The DDS Development Kit is fully functional as a Sig_ Gen VFO once built the internal firmware currently displays line1 DDS Dev Kit V2 0 Your callsign can be custom programmed upon request line2 nn nnn nnn Hz where nn nnn nnn is the Frequency Programmed Frequency range is 1 Hz up to 29 999 kHz Operates from 12 VDC at about 110 milliamps Two channels RF output control line selectable 70 20 milliwatts output into a 50 Q load from 1 800 KHz to 29 999 kHz respectively Freq range can be changed in firmware This DDS kit was designed to be a VFO source for NE602A and or Diode Ring mixers Fully expandable using 20 CPU I O lines to control other transceiver function Open Source code available under the GNU General Public License Quick user manual Supply power to the DDS using 12 14 VDC at 120 milliamps current draw On power up the Red LED blinks twice and then the LCD displays 10 000 000 Hz Note there is a cursor under the 1 MHz position on the LCD Press the encoder and the cursor moves to the 100 KHz position Each press of the encoder will move the cursor to the right Pressing the encoder when the cursor is at the 1 Hz position causes the cursor to move to the 10 MHz position Default Freq is 10 MHz software programmable IF OFFSET both and band selection via pre programmed memories will be available soon
10. m the Encoder to PD2 on the ATmel CPU PD3 Connect PD3 from the Encoder to PD3 on the ATmel CPU PD5 Connect SD from the AD9834 to PD5 on the ATmel CPU PD1 Connect SC from the AD9834 to PD1 on the ATmel CPU PDO Connect FS from the AD9834 to PDO on the ATmel CPU 28 Install the ICs before inserting the ICs into their sockets bend the IC pins so that they are at sharp right angles to the IC s plastic body The easiest way to bend all leads uniformly is to place the IC legs on a flat table and push press the body of the IC against the table DO both sides U1 ATmega88PA 20 install observing PIN 1 polarity U2 74HC164 install observing PIN 1 polarity 29 Connect the LCD to the PCB OK 30 Momentarily connect 12 volt power to the PCB observing current draw if possible Current consumption should be about 120 milliamps When the DDS powes up the LED should flash twice and then the LCD should display 10 000 000 Hz If all is OK at this point connect 12 volts to either the TRANSMIT or RECEIVE control lines and measure view 10 MHz output from the corresponding TRANSMIT or RECEIVE outputs at J3 4 Output level into a 50 ohm dummy load should be about 4 8 volts Peak to Peak at 10 MHz provided that there is no resistor pad in the output section on the PCB OK 31 Assuming that all is OK to this point the next step is to set up the DDS as a development platform This step is optional not required if you plan to use the D
11. oward R13 pull leads tight and solder 18 Install the following capacitors on the DDS side left side of the PCB Note that C15 is labeled twice in error on the PCB C15 in the next step is between C14 and C16 _ C15 18 23 24 25 29 30 47n yellow axial lead capacitors _ Install a jumper discarded resistor lead at location labeled C15 between R13 and R14 _ _C14 16 17 26 100n yellow axial lead capacitors _ C10 11 12 2 28 10n yellow radial lead disk capacitors 19 Install T2 a bifilar wound transformer Prepare 8 inches of 30 GA dual red green magnet wire Twist tightly to about 4 twists per inch Wind 8 turns evenly and tight through the body of the FT37 43 ferrite toroid Trim leads to about half inch from the toroid body Remove insulation up to the body of the ferrite It is required that one colored wire is installed in the upper right corner connected to C25 and the other colored wire is connected in the lower left corner connected to the collector of Q1 The remaining red and green wires run through the holes connecting to R19 and the PIN diodes ____F 137 43 Strip and Tin leads and install 20 Install two T30 6 yellow toroid inductors low pass filter cores Prepare 2 pieces of 7 inches of 26 GA red magnet wire Wind 8 turns of the wire through one yellow toroid Repeat for the other toroid Strip the insulation off the wires all the way down to the body of the toroid cores Tin the wires _ _ L2 3 Install
Download Pdf Manuals
Related Search
Related Contents
ART. DT12EAM Genius MousePen M508 Philips Stick energy saving bulb 8710163158273 Notice d`utilisation Lave-linge Samsung SGH-V200 Manual de Usuario DDX6017 - Kenwood Mazda CX-9 Smart Start Guide オートフラッシュCタッチスイッチ用 黒プレート A-4974 Bewacom BM3 Configuration Manual Copyright © All rights reserved.