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Æ20204 LC METER

Assembly and

Operation Manual

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Содержание AE20204

Страница 1: ...20204 LC METER Assembly and Operation Manual...

Страница 2: ...REV 3 0 EN 2014 Ascel Electronic...

Страница 3: ...ed Use iv ESD Warning v AE20204 LC METER 1 Circuit Description 2 Soldering 5 Component Reference 7 Assembly 15 Troubleshooting Checklist 18 Power Supply 20 Case Mounting 21 Operation 22 Circuit Diagra...

Страница 4: ...ning the case Work on devices only if you made sure that they are disconnected from any power supply and any possible charge inside is discharged Devices must only be used if they are mounted in a cas...

Страница 5: ...hops the use of this unit must take place under the supervision of qualified staff Do not put this unit in use in an environment where the risk of fire or explosion or explosive gas vapor or dust is p...

Страница 6: ...with the appropriate regulations for electronic devices All accompanying papers in particular this manual must also be passed over Where necessary for example in the European Union you must also publi...

Страница 7: ...ng from a fabric seat removing some types of plastic packaging or using non ESD compliant tools Danger of ESD The high voltage pulse can easily destroy electronic parts ICs and FETs are very sensitive...

Страница 8: ...he included software to access the readings and show them on screen Logging is also supported The easy plain text command protocol allows simple integration with external tools and systems All SMD Sur...

Страница 9: ...ge levels for the RS232 interface IC4 C13 C14 C15 C16 R12 and R13 implements the USB interface Note with the USB model the UART to USB Bridge FT230XS IC4 is pre assembled The positive regulator IC3 pr...

Страница 10: ...known now L1 can be calculated L1 1 4 2 f1 2 C9 This self calibration is performed on start up To measure components frequency f3 is obtained with the component under test connected to the oscillator...

Страница 11: ...epends amongst others on frequency Measuring with different test frequencies will give different results Note electrolytic capacitors can not be measured with this device Note the quality factor of th...

Страница 12: ...rotective glasses If you use additional flux make sure it is suitable for electronics use Non suitable flux may contain acid which will damage the traces on the PCB over time Try to solder fast Heatin...

Страница 13: ...leg 3 Wait a moment Then remove the iron 4 Do not move the part you just soldered for a few seconds while it is cooling down Moving it may cause the solder joint to crack With lead solder the solder j...

Страница 14: ...above the solder joint The resistance value is given with colored bands on the resistor The code consists of four five or six bands With four bands the first two are the base value see table below the...

Страница 15: ...itors Capacitors are soldered the same way as resistors Electrolytic capacitors are polar They must be mounted in the correct orientation They will be destroyed when installed in reverse polarity and...

Страница 16: ...the letter n is the capacitance in nF where 3n9 is 3 9nF Upper case characters denote the tolerance according to this table B C D F G H 0 1pF 0 25pF 0 5pF 1 2 2 5 J K M S Z P 5 10 20 50 20 80 20 0 10...

Страница 17: ...symbol The positive terminal is called the anode Diodes are mounted horizontal Try not to heat up the body of the diode while soldering 4 LEDs LEDs light emitting diodes must be soldered with respect...

Страница 18: ...mounted incorrectly The mark on the silkscreen must match the notch on top of the IC Pin numbers are counted counter clockwise starting from the notch Note Please also pay attention to the ESD warnin...

Страница 19: ...n the silkscreen drawing The leads may not cross Note field effect transistors FETs are extremely sensitive to ESD 7 Crystal The polarity of the crystal is not relevant but the bottom side of the pack...

Страница 20: ...le below the third is the multiplier to the base value and the fourth is the tolerance The inductor value is base value multiplier tolerance Color Codes Color Digit Multiplier Tolerance in None 20 Sil...

Страница 21: ...plenty of solder for the binding posts as they need a lot of heat to solder If your soldering iron s temperature is adjustable set the temperature 20 30 higher than normal Try to heat the binding post...

Страница 22: ...itor labeling such as n10 0 10 nF 100 pF as opposed to 10 nF Also check if all leads of an IC are correctly inserted into the socket They tend to bend during insertion After soldering inspect the boar...

Страница 23: ...solder it to fix errors which takes extra time and effort See the previous page for more information 2 Solder the parts with an asterisk the LCD the USB connector the 4mm binding posts and the tact sw...

Страница 24: ...Finished Component Side Finished Solder Side without the LCD LCD Mounting 17...

Страница 25: ...match the bar on the silkscreen symbol Verify the polarity of the electrolytic capacitors Keep in mind that the marking on the capacitor can point to the or lead The actual meaning is printed inside...

Страница 26: ...ld the PCB toward bright light Are there bad cold dry solder joints Jiggle component leads at the solder joint with a pair of tweezers Re solder them if any move If a solder joint looks suspicious bet...

Страница 27: ...ply that meets this criteria can be used Warning An AC power supply may not be used Note It is advisable to use a current limiting lab power supply when switching on for the first time Set it to 15V a...

Страница 28: ...cutouts and labels 1 Remove the caps from the bindings posts 2 Put the extension caps on the tact switches 3 Join the front panel and the PCB and insert both in the respective brackets The PCB fits in...

Страница 29: ...bration status is shown as FAILED In this case check the device for assembly errors see appropriate chapter If the self calibration and test were successful PASSED is shown The LC meter is ready for m...

Страница 30: ...test leads are connected press the REL button to set the current value to zero REL is shown on the display and the following measurements refer to this value The test leads should be shorted in induct...

Страница 31: ...hen nothing is connected to the inputs the measured value will drift from 0 00pF to a typical value of just under 1pF The final value will be reached after about 5 minutes at room temperature To achie...

Страница 32: ...Circuit Diagram 25...

Страница 33: ...3 C7 C8 C11 10 F Electrolytic 3 D1 D2 D3 1N4148 Diode 2 K1 K2 Relay 1 L1 68 H 1 Q1 Crystal 14 7456 MHz 1 R1 10k 1 R7 2 4k 3 R2 R3 R5 100k 1 R4 47k 1 R6 220 1 R9 1k 1 R14 10 1 IC1 IC Socket 28 pin Mic...

Страница 34: ...istor 1 SUB D9 Connector USB Model only 2 C12 C13 100nF 1 C14 10 F ELKO 2 C15 C16 47pF 2 R12 R13 27 1 IC4 FT230XS USB UART Interface pre assembled 1 USB USB Type B Connector Other PCB 4 spacer bolts a...

Страница 35: ...Component Placement Note Parts whose designators contains an asterisk are mounted on the opposite side of the PCB See the chapter Assembly for details 28...

Страница 36: ...is makes integration with external tools and applications very easy System Requirements RS232 Interface free serial port USB Interface MS Windows 1 98 ME 2000 XP Vista 7 8 Server 2003 Server 2008 Serv...

Страница 37: ...tallation Note The NET Framework at least version 4 0 must be installed prior to the software installation Software Operation 1 Connect the AE20204 to the PC using a RS232 or USB cable 2 Launch the so...

Страница 38: ...is output in packets which have the following format IDENTIFIER MODE VALUE IDENTIFIER AE20204 LC METER MODE C or L VALUE measurement value in units of 0 001pF or 0 001uH Example AE20204 LC METER C 345...

Страница 39: ...9mH 10 H Test Frequency 15 kHz 750 kHz sine Test Voltage 2 5Vpp Accuracy 0 5 reference Display 2x16 characters dot matrix LCD PC Interface RS232 or USB optional Supply Voltage 8 12V DC Temperature 5 C...

Страница 40: ...ASCEL ELECTRONIC www ascel electronic de 2014...

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