PCB Testing Equipments
PCB Coil Micro-short Tester

The most common application of PCB/FPC wired near-field communication (NFC) applications is the induction coil printed on the inner layer of mobile payment cards. The printed coils may make contact with each other and result in micro-short circuits due to poor silver printing processes which, in turn, lead to poor induction in terminal products or even induction failure and data communication interruption.

PCB coil micro-short circuit meter 933 is a non-destructive tester. By applying voltage at both ends of the coil, this resonates a cluster of energy by induction and capacitance charging and discharging. We then use the waveform from release to attenuation to analyze the PCB coils for its insulation, induction amount, and parallel connection-based capacitance change to control micro-short circuiting in coils caused by the production process.

  • Detect micro-short circuit in between loops within coils by high voltage test
  • Process analysis or the best test station for quality control
  • Simultaneous testing of multiple sets of coil plate lifting efficiency
  • Non-destructive analysis - transient voltage test-intermittance voltage test
  • L/C mutual discharge resonance releases waveforms for comparison
  • Integrated LCR measurement function, comprehensive quality control of coil plate (inductance / inductance Q / DC resistance)

Measurement Data

Range 0.1mΩ ~ 100kΩ( 4-wire measurement  )
Accuracy Low Resistance:0.1mΩ ~1Ω ±(0.2% ± 1mΩ)
High Resistance:1Ω ~ 100kΩ ±0.1%
Inductance test 0.01nH ~ 100kH
Coil Micro-short
Voltage  0.2kV ~ 3kV ±2%
Measurement Item  Total Area、Area size comparison、Flutter、Waveform comparison、Corona
Accuracy 2%



Channels 17 channels
Indicator Pass/Fail Screen Diaplay/Sound
Fixture Customized fixture
Power Supply 90 ~ 132Vac or 198 ~ 264Vac (switchable)
Interface RS-232
Flash Memory Storage of 100 rewritable data sets
Operation Manual、、RS-232

Temperature :10℃~40℃
Humidity :20~90%RH

6420+9333 Dimension (W*H*D) / Weight 435x140x520 mm / 15 Kg 
9333/6420 Display 320*240 

Test Item

Item Range
Coil Micro-short Pulse voltage 200V ~ 3000V
Coil Impedance Inductance、Quality factor、DCR
No relevant audio and video files

Standard Accessories

  • Power cord
  • User manual CD
  • High voltage cable
  • RCA connector
  • RS-232 cable
  • Control cable (25F-25F)

Optional Accessories

  • Customized fixture
  • Computer link software
No Related Products