PCB Testing Equipments
Multi-coil Impedance Tester

The MICROTEST PCB multi-coil impedance testing machine 9332 is the maximum efficiency detection solution for WPC wireless charging applications. With a precision four-wire impedance measurement mechanism, its impedance measurement frequency band may go up to 1MHz and is compliant with the working frequency required by Qi or PMA wireless charging association standards (205KHz by Qi and 304KHz by PMA).

The MICROTEST PCB multi-coil impedance testing machine 9332 enjoys a wide measurement range over the three major component electrical parameters: lower limit of resistance up to 1mΩ, inductance in the range of 0.1nH to 100H at an accuracy of 0.1% ± 1nH, and capacitance in the range of 0.01pF ~ 1F at an accuracy of 0.1%±1pF. In addition, it features a 48-point test for copper foil etching or silver printed winding coils to test up to 12 coils in one multi-row board to hugely outperform single channel LCR meters in terms of testing efficiency.

  • 0.1% basic accuracy
  • Optional computer link software for tracing test data
  • Provide fixture short circuit / open circuit correction function
  • 4/8/12 group inductance can be measured at one time, (Ls/ACR/DCR/Q) improves production efficiency
  • Four-wire precision impedance parameters measurement

Measurement Data

Frequency 20Hz-200kHz

Impedance (Z)、Phase angle(Ø)、Resistance (R)、Inductance (L)、dissipation factor(D)、Quality Factor (Q)、Direct Current Resistance (DCR)、Capacitance (C)

Basic Accuracy ±0.1%(AC 1kHz)
Output Impedance 100Ω

Frequency Trimming


Frequency Output

Test pin Multi-channel test for up to 12 coils at a time (with LCR Meter measurement function)
Equivalent Circuit Series / Parallel
Mathematical Mode Absolute / Percentage
Calibration Open Circuit / Short Circuit 


Power Supply 90Vac ~ 125Vac or 190Vac ~ 250Vac / 48Hz ~ 62Hz
Display 320*240 
Interface RS-232, Handler (option)
Flash Memory 60 sets
Operation Auto、Manual、Remote Trigger
Environment Temperature : 10 ~ 40,    Humidity : 10% ~ 90% RH
Dimension (W*H*D) 365x145x396 mm
Weight   9 Kg

Measuring Range

Item Range

Basic Accuracy
(AC 1kHz)

Test Speed
L, LK 0.1nH ~ 9999.99H  0.1%  75ms
C 0.00001pF ~ 999.99mF  0.1%  75ms
Q,D 0.00001 ~ 99999  0.0005  75ms
Z,X,R 0.00001Ω ~ 99.9999MΩ  0.1%  75ms
Y 0.01nS ~ 99.9999S  0.1%  75ms
θ -180°~ +180°  0.03°  75ms
DCR 0.01mΩ ~ 99.999MΩ  0.1%  25ms

Optional Plan

1.PCB factory O/S electric measuring tester
2.Manual clamp independent fixture
3.Pneumatic gripper independent fixture


Wireless charging induction coil board, inductor coil PCB, NFC antenna, low frequency RFID application soft board

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Standard Accessories

  • Power cord
  • User manual CD
  • Pneumatic scanning box (F5248)
  • PCB special horn cable
  • F423501

Optional Accessories

  • Computer link software
  • RS-232 Cable
  • Handler Box
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