universal timer/counter rf power meter fr1308 assembly
Contents
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3. FRANCE Web www mwinstruments com Email info mwinstruments com Tel 33 0 8 71 13 71 39 Fax 33 0 1 3992 4986 FR1308 assembly manual MME1308 0601 20
4. as the braid The insulation material of the cable can melt easily under hot temperature so don t apply too much heat during this operation Printed board HM8002 Rigid wires L 3cm 6 2 Power supply 2 5mm jack assembly The connector will be fixed to the enclosure as shown in the drawing below The red and brown wires will be soldered on the main board later The 3 5mm jack connector wil be mounted later as well FR1308 assembly manual MME1308 0601 12 Brown wire to J2 0V L 3 cm Red wire to J1 9V L 3cm 6 3 First testing Before the final assembly a brief test shouldl be performed Connect a DC voltage between 9 and 15V to J1 positive terminal and J6 ground Place a short between J5 and J6 on the keyboard circuit Adjust the AJ2 potentiometer for the best contrast on the LCD If there is nothing on the screen disconnect the power supply and check the work Set the wipers of AJ3 and AJI to midscale positions Test that the keyboard is working normally by pressing the keys and observing the display Use a signal generator and check that all inputs work normally The sensitivity 1s not optimal at this time and the power meter will give incorrect values If everithing is ok you can proceed to the final installation 1 the enclosure 6 4 Final installation Solder the powermeter input coaxial cable to J3 central wire and J4 braid soldering pads Soder the shield over the powermeter circuit AD8307
5. brown wires L 4 cm 2 red wires L 4 cm 1 yellow wire L 4 cm Shield FR1308 assembly manual MME1308 0601 4 3 TOOLS REQUIRED In order to properly assemble the kit the following tools are required e Solder iron 25W power Screwdriver Small screwdriver for adjustments Adjustable pliers or wrench for BNC socket mounting Wire cutters Needlenose pliers mm Tweezers for SMD mounting a 4 ASSEMBLY ORDER The kit will be assembled in the order below A Display keyboard assembly B Main board assembly C Final assembly 5 DISPLAY KEYBOARD ASSEMBLY Start with soldering all resistors followed by the push buttons insuring that the push buttons are inserted flush to the printed circuit board Q3 and Q4 transistors will be mounted horizontally and laid flat on the printed circuit The 6 pin male header CN4 will be soldered later Install LEDs LD1 and LD2 will a distance of 7 mm between the printed circuit and the top of the LEDs The LEDs will have to be soldered perpendicular to the printed circuit so that they seat in the holes of the cover The LD3 LED will be soldered according to the drawing opposite The LCD will be fixed on the keyboard by two 2mm screws A 2mm spacer will be placed between the keyboard and the display This spacer 1s a M2 5 nut with Screw M2x8 2mm thickness The connection of the display keyboard assembly SS eee to the main board is through Plastic washer three 6 pins male head
6. display keyboard assembly Fix the display keyboard assembly to the spacers with two screws Solder the three male headers to the display board and the 7 ENCLOSURE PREPARATION 6 1 BNC connectors assembly The end of the BNC equipped coaxial cable jacket will be stripped to a lenght of approximately 1 0 47 Take care not to cut the braid of the cable during this op ration Tin plate the central wire as well as the braid Install the BNC socket into the enclosure insuring that the socket is securely attached by tightening the nut with adjustable pliers or appropriate wrench Insert the two remaining BNC connectors through the holes of the enclosure Place the small 8002 printed circuit board over the two BNC connectors with the provided nuts The nuts will have to be tightened so that the BNC connectors will not unscrew themselves when a BNC cable 15 connected The BNC connector for CH 1 will require a piece of rigid wire scrap resistor lead of about 3 cm 1 2 long soldered to the center pin A second wire will be soldered in the FR1308 assembly manual MME1308 0601 11 center of the ground plane of the HM8002 between the two BNC connectors These wires will be sodered later to the main board soldering pads J7 and 18 The soldering of the coaxial cable to the second BNC connector remains to be done Strip both ends of the coax cable to a lenght of approximately 0 47 Tin plate the central wire as well
7. 7 pV UOISIASY soquinyy SLINDUID LNANI 802 784 S00Z MIN ssu MIN ioudoud 9 152 92 JDA PLZ NZ OI ETA Wr JHN A0 a GS 9 5299 LO 9 pa 001 614 XI STA EUA ODA 10 OLY SIA JDA 4 als MS 3 5 z Oo 1 4 JDA L IETHNA NI 84 84 of al gt 1 PIN ra 6rIPNI 1 SEO NI 9 INANI NI 4 7 Is amp INI 7 sf ar99 022 10 on FR ETO 868 LTA 8 MZ HOOI O _ 0 9TA 19 A00S dd00T 912 FR1308 assembly manual MME1308 0601 17 PPN Ag T9S SZ90S0 MOd spredde suyo LE Jo yous 002 UOISIASY 5215 29 UAMOd TA OETA 00 SSUMMSUL MIN D ssu 5 MIN 9190014 152 ued 90 OLY MS OMS cca 95529 er Jsi A O C FR1308 assembly manual MME1308 0601 18 FR1308 assembly manual MME1308 0601 19 MW Instruments 12 rue du Lieutenant Colonel Quinette 95200 SARCELLES
8. Be careful to leave enough space around the mounting hole in the corner for the screw Secure the board to the enclosure with four screws Solder the power supply wires according to the drawing of paragraph 6 2 Solder the CH2 input coaxial cable to J6 braid of the cable and J5 center wire soldering pads Solder the two solid wires from CHI input to J7 input and J8 ground soldering pads Extension connector assembly Fix the jack connector horizontaly with the terminals on the top Solder the three wires according to the drawing below FR1308 assembly manual MME1308 0601 13 Brown wire a Yellow wire cakes Red wire On Off switch mounting Remove the short placed on J15 and J16 The on off switch will be connected to J15 and J16 soldering pads of the keyboard circuit by two 6 cm 2 47 wires Cover mounting Adjust the position of LD3 LED so that it seats in the hole in the cover The three LEDs must extend past the surface of the cover Check that the surface is clean and apply the Lexan cover film Screw the cover to the enclosure thanks to the four screws Place the baterry holder above the power circuit shield as indicated in the picture below The assembly of the FR1308 is now finished Before using it you have to calibrate 11 Please consult the user manual for details FR1308 assembly manual MME1308 0601 14 FR1308 assembly manual MME1308 0601 15
9. ORANGE BROWN FR1308 assembly manual MME1308 0601 4 Q SP Adjustable Potentiometer 47 Adjustable Potentiometer 4 7 pf Adjustable Potentiometer 250 R Adjustable Potentiometer 20K 20 turns CI C2 C3 C4 Capacitor 100nF 50 C13 C14 Capacitor Ceramic LOOpF 50 Capacitor Ceramic 100pF 400V Capacitor electrolytic Capacitor electrolytic 100uF 25 C15 Capacitor polyester film e 100nF 400V C20 C21 C22 Capacitor SMD InF 1206 C23 GREEN marking C24 C26 C27 Capacitor SMD 22nF 1206 C28 RED marking LD1 LD2 LED 3mm GREEN Diode 1N4004 D2 D3 D4 05 Diode 1N4149 JFET N channel 245 FR1308 assembly manual MME1308 0601 5 Regulator 5V 500mA 78MO05 MC74F00N CD74HC4520 74 74 74 257 M74HC4052B1 MAX903CPA U664B LM358AN AD8307AN PIC16F916 programmed pd pd ed ee pl a LCD 2 lines of 16 characters with backli Ferrite bead PBI PB2 ce sk rps sone pins _ 2 US Socket sp cial 28 broches pour PIC CNI CN2 Socket SIL 6 pins CN4 and eee LCD Male header 6 pins HAT nh 1308 assembly manual MME1308 0601 6 BNC socket with coaxial cable OV battery socket jack 3 5mm stereo jack 2 5mm mono On Off switch Printed Circuit board for BNC Cables Pack Coaxial cable RG179 10cm 2 yellow wires L 6cm 2
10. ers NC 2 5 which will be soldered in later step LCD DO FR1308 assembly manual MME1308 0601 8 The keyboard display assembly will be secured to the main printed circuit board with to two spacers of 25 5 mm 1 004 formed by assembling two 12 mm spacers and two washers Mounting of the keyboard display assembly to the main board will be performed in a later step Spacers preparation Spacer M F L 12 Washer thick 0 5mm Star washer M3 _ Spacer F F L 12 6 MAIN BOARD ASSEMBLY 6 1 SMD capacitors soldering SMD capacitors will be first soldered to the main board first Take care to not mix the values The 22nF and InF capacitors are marked respectively by a red line and a green line In case of doubts you can measure their capacity with a capacitance meter These capacitors are 1206 format and should not introduce any special problem in soldering them The TCXO oscillator U14 1s already soldered 1 the board Ji5 FR1308 assembly manual MME1308 0601 9 6 2 Install Resistors The Resistors will be soldered by referring to the drawing given at the page 15 Take care to not mix the values Certain values as 11K and 22K have colors that can easily be confused The R40 resistor is not indicated on the silk screeen of the board This resistor is installed between R10 and J9 J10 R17 resistor will be soldered slightly elevated from the printed circuit Re
11. ject designer at info mwinstruments com 2 COMPONENT PARTLIST This section describes the contents of the FR1308 kit Please check all parts supplied in the kit bag against the list shown here We have done our best to provide all parts without errors but sometimes shortages do occur If you find that you are missing a component after carefully going through the parts bag and identifying the components against this part list please contact us FR1308 assembly manual MME1308 0601 3 Picture Ref Description Description n Resistor 5 6 ohms 5 _ a GREEN RED ORANGE BROWN BLUE RED BLK GOLD DEE Resistor 100 ohms 1 BROWN BLE BLK BLK BROWN _ REDREDBROWNGOLD _ RED RED BROWN GOLD Resistor 464 ohms 1 YELL BLUE YELL BLK BROWN R29 R40 YELL VIOLET BROWN GOLD Resistor 1 k 1 BROWN BLK BLK BROWN BROWN Resistor 2 74 1 Sa Resistor 4 7 k 5 YELL VIOLET RED GOLD Resistor 4 87k 1 YELL GREY VIOLET BROWN BROWN R s 20 5 k 1 RED BLK GREEN RED BROWN Resistor 22 5 RED RED ORANGE GOLD R32 Resistor 33 2 k 1 ORANGE ORANGE RED RED BROWN _ GREEN BLUE ORANGE GOLD 1 R21 Resistor 100 k 1 BROWN BLK BLK ORANGE BROWN R2 R12 R13 Resistor 10k 1 a R37 BROWN BLK BLK RED BROWN Resistor 100 k 5 2W Oxydmetal BROWN BLK ORANGE GOLD Resistor 898 k 1 GREY BLANC GREY
12. se of a BF245A it will be soldered with the flat side toward R18 the marking is the dotted line on the printed circuit board The FET 15 sensitive to the electrostatic discharges Take proper grounding precautions when handling FR1308 assembly manual MME1308 0601 10 6 7 Install Integrated circuits Integrated circuits U8 010 and 013 will be directly soldered on the board the remaining Ics will be equipped with sockets Observe orientation of each IC or socket The microcontroller socket is a special one and 15 made with two superimposed sockets The metallic tab of the regulator U4 is oriented towards the edge of the circuit board 6 8 Connector assembly The soldering of the three connectors CN1 CN2 and CN3 will complete the assembly of the main board These connectors must be soldered flush and perpendicular to the printed circuit Carefully inspect all solder connections as well as checking for the correct placement of all components in particular the active devices When all seems correct clean soldering rosin from the circuit boards with a flux remover 6 ASSEMBLING THE TWO BOARDS Fix the two spacers to the main board with two M3 screws A star washer will be inserted between the head of the screw and the bottom of the pcb Install the three male headers into the corresponding connectors CN1 CN2 CN3 on the main board Install the display keyboard assembly aligning all the pins of the 3 male headers into the holes of the
13. sistor R7 and R20 are not used Be carrefull not to mix the resistor labelled R34 52 3 ohms and R3 which is in the keyboad assembly The 4 figure doesn t appear in the silk screen of the pcb 6 3 Install Capacitors Start with installing the 100 ceramic capacitors following by C16 and C18 capacitors 100 pF each Take care to not invert these capacitors C16 has a 400V working voltage and has a thicker body than C18 The electrolytic capacitors will be soldered next Observe the polarity of these caps The printed circuit board can receive capacitors with 2 5 or 5 mm spacing In the case of capacitors with 2 5 mm spacing take care to solder them with the correct orientation The soldering pads in common are the negative terminal of the capacitor The positive terminal always corresponds to the 5mm spacing 2 5mm spacing square soldering pad capacitor capacitor 6 4 Install Diodes Install D3 and D4 diodes with a ferrite bead at each terminal Install D2 and D5 diodes Observe proper orientation of the banded end Install D1 diode 1 6 5 Install Adjustable potentiometer The AJ4 multi turn potentiometer will be soldered with its screw on the left side as indicated in the silk screen Install The AJ1 72 and AJ3 potentiometer 6 6 Install Transistors Install the transistors according to the silkcreen outlines The field effect transistor Q2 has a double silk screen marking on the circuit board In the ca
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