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Atlas 

LCR

 User Guide 

 

August 2015 – Rev 6 

Page 18 

 

Appendix D – Troubleshooting 

 

Problem 

Possible Solution 

Capacitance measured when 

probes are open circuit is not 

close to zero (±1.0pF). 

Perform a probe compensation. 

Resistance and/or inductance 

measured when probes are 
short circuit is not close to 

zero (±1.2Ω, ±1.6µH). 

Perform a probe compensation. 

Measured value doesn’t 

appear to be correct. 

Ensure probes are well connected to the 

component under test for the entire duration 

of the analysis. 

Ensure that nothing else is connected with 

the component under test. Make sure that 

you are not touching the connections. 

The component value may be outside the 

supported measurement range. 

The component’s design frequency may not 

correspond to the test frequencies used by 

the Atlas LCR. 

Measured values vary 

slightly between tests. 

The displayed resolution is higher than the 

measurement resolution to avoid rounding 

errors. Small variations within the quoted 

measurement resolutions are normal. 

Calibration date is 

approaching or has past. 

Don’t worry, the Atlas LCR will carry on 
working after the “Calibration Due Date” 

has past. The date is simply a 

recommendation. 

 
 
 
 

Summary of Contents for Atlas LCR40

Page 1: ...nent Analyser Model LCR40 Designed and manufactured with pride in the UK User Guide Peak Electronic Design Limited 2002 2015 In the interests of development information in this guide is subject to change without notice E OE GB40 6 ...

Page 2: ... Contents Page Introduction 3 Important Notices 4 Using your Atlas LCR 5 Normal use Probe compensation Testing Inductors 7 Testing Capacitors 8 Testing Resistors 11 Low Resistance and Inductance Taking care of your Atlas LCR 12 Battery Replacement Self Tests Appendix A Accessories 14 Appendix B Component Identification 15 Appendix C Technical Specifications 17 Appendix D Troubleshooting 18 Appendi...

Page 3: ... particular component under test The software is smart all internal calculations are performed with floating point maths This means that precision isn t lost in the complex internal calculations and all results are displayed in properly formatted and easy to read engineering units eg 23 6pF Summary Features Automatic component identification Automatic test frequency selection DC 1kHz 15kHz and 200...

Page 4: ...amage to the Atlas LCR and invalidation of the manufacturer s warranty Non destructive overload situations are logged in the non volatile memory within the Atlas LCR Analysis of discrete unconnected components is recommended The Atlas LCR is designed to provide accurate and reliable information for the majority of supported component types inductors capacitors and resistors as described in the tec...

Page 5: ...e test probes to the component while the analysis takes place Instant Analysis You can skip the 5 second delay by pressing the on test button again The analysis will then start immediately Scrolling through the results Results are displayed a screen at a time simply press the scroll off button to see each screen when you re ready If you reach the last screen of results pressing scroll off will tak...

Page 6: ...r a short delay the unit will prompt you to short the probes together As you have already shorted the probes with the piece of wire the Atlas LCR will then ask you to open the probes Now simultaneously unclip the both probes from the small length of wire and let the leads rest without touching them If this procedure has been successful the unit will display OK and then switch off At this point the...

Page 7: ...tor can influence the frequency that the Atlas LCR selects for your particular inductor Inductance range Values ranging from about 1µH to 10H can be measured with a minimum resolution of 0 4µH The DC resistance of the inductor is measured from 0 5Ω to 1kΩ with a minimum resolution of 0 3Ω Inductor results Following analysis the inductance is displayed Press scroll off to display the frequency at w...

Page 8: ... a characteristic known as Soakage It is vitally important that you ensure the capacitor is fully discharged ideally for several seconds to minimise the possibility of damage to the unit If you are unsure measure the voltage across the capacitor using a suitable volt meter before applying the capacitor to the Atlas LCR The unit will automatically identify the type of capacitor being tested and app...

Page 9: ... to give the best possible measurement resolution The following table shows the test frequencies used for various capacitance ranges Capacitance Range Test Frequency Used Between 0pF and 1nF 200kHz Between 1nF and 15nF 15kHz Between 15nF and 1μF 1kHz Above 1μF DC The capacitance ranges for each test frequency shown in the table above is approximate Effects such as leakage dielectric dissipation an...

Page 10: ...tore enough charge that may cause damage to the LCR An electrolytic capacitor can even develop it s own stored charge that may be sufficient to cause damage to the Atlas LCR even after it has been temporarily discharged This is a characteristic known as Soakage It is vitally important that you ensure the capacitor is fully discharged ideally for several seconds to minimise the possibility of damag...

Page 11: ... value inductors 5µH and low value resistors 10Ω are treated as a special case by the Atlas LCR This is because low value inductors and low value resistors can exhibit very similar characteristics at the test frequencies available from the Atlas LCR The following message is displayed Pressing the scroll off button will display the values of resistance and inductance that the Atlas LCR has measured...

Page 12: ...can be purchased from many retailers and directly from Peak Electronic Design Ltd or an authorised agent Battery types Suitable battery types include 23A V23A GP23A MN21 or a good quality 12V alkaline equivalent as used in many test instruments and automotive remote key fobs Battery access To replace the battery unscrew the three screws to remove the rear panel Remove the old battery and insert a ...

Page 13: ...lure and restarting the unit may clear the problem If the fault persists please contact Peak Electronic Design Ltd or an authorised agent with details of the error message for further advice Please note that some internal tests cannot be performed if a low battery warning has been displayed This means that if there is an internal problem a low battery condition can prevent the error condition from...

Page 14: ...robes There s even space for a spare battery SMD Tweezer Probes These tweezers are ideal for testing many types of surface mount device The tweezers can cope with package sizes of 0402 0603 0805 1206 1210 and Case A B C D Fitting is easy the tweezers are terminated in the standard Atlas LCR probe connectors Other Probe Accessories Many different probe types are available specially made for your At...

Page 15: ... Detection The Atlas LCR will distinguish between components that are largely inductive or largely resistive according to the values of inductance and resistance that it has measured This is illustrated in the following graph For example if the inductance of your component is measured at 100µH and it has a DC resistance of 100Ω then the Atlas LCR will tell you that you have a resistor If however t...

Page 16: ...asured capacitance is very low such as open probes or 2 If the measured DC resistance is between 100kΩ and 10MΩ and the measured capacitance is larger than 10pF or 3 If the measured DC resistance is between 1kΩ and 100kΩ and the measured capacitance is larger than 100nF Resistor Detection Measured characteristics that do not satisfy any of the above criteria for inductors or capacitors will be dis...

Page 17: ...V 1 05V Peak test current thru S C 5 0mA 5 0mA Test frequency accuracy 1kHz 1 5 1 1 5 14 925kHz 1 5 1 1 5 200kHz 1 5 1 1 5 Sine purity Typically 60dB 3rd harmonic Operating temperature range 10 C 40 C 3 Battery operating voltage 8 5V 13V Notes 1 Within 12 months of factory calibration Please contact us if you require a full re calibration and or certification of traceable calibration 2 Specified a...

Page 18: ...he analysis Ensure that nothing else is connected with the component under test Make sure that you are not touching the connections The component value may be outside the supported measurement range The component s design frequency may not correspond to the test frequencies used by the Atlas LCR Measured values vary slightly between tests The displayed resolution is higher than the measurement res...

Page 19: ... Peak Warranty The warranty is valid for 24 months from date of purchase This warranty covers the cost of repair or replacement due to defects in materials and or manufacturing faults The warranty does not cover malfunction or defects caused by a Operation outside the scope of the user guide b Unauthorised access or modification of the unit except for battery replacement c Accidental physical dama...

Page 20: ...l EU member state has implemented the WEEE regulations into national law in slightly different ways Please follow your national law when you want to dispose of any electrical or electronic products More details can be obtained from your national WEEE recycling agency If in doubt you may send your Peak Product to us for safe and environmentally responsible disposal At Peak Electronic Design Ltd we ...

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