Impedance (IMP)
Task of the QC STANDARD Software and Optional Module for the R&D System
Features and Benefits
- Optimized for quality control applications, such as end-of-line testing
- Included in the Klippel QC Standard Software package
- Stimulus: fast multi-tone or chirp based
- Inductance models: Wright, Leach, LR-2
- Electrical signal (voltage, current) analysis providing
- T/S parameter identification according to IEC 60286
- Vented Box Parameters (fb, Qb)
- Impedance amplitude and phase frequency response
- Current and voltage spectrum, noise and distortion
- Limits and grades for all measures
- Online yield, process control Cpk/Ppk, control rules
The Impedance Task (IMP) identifies the lumped parameters of the equivalent circuit of the transducer, including Thiele/Small, creep and lossy inductance parameters. It complies with IEC standards 60268-5 and 60268-22. A multi-tone or chirp stimulus is used to measure the voltage and current using Klippel measurement hardware: Klippel Analyzer KA3 (QC Card or Speaker Card) or Production Analyzer. To ensure accurate measurement in the small signal domain, distortion in current and voltage are measured and checked against admissible limits.
Specification
Optional Extensions
Options operate as plug-ins and extend the functionality of this task.
No additional test time is required, all options use or modify the excitation of this task.
Add-Ons(to purchase):
- T/S Parameter Laser Fitting (TSX):
Provides full Thiele/Small parameter identification with laser including Bl and Mms
Feature Libraries(free of charge):
- Sequence Control: skip or repeat tasks in a QC-test sequence
- Text Logging: exporting results as plain text file (csv)
Requirements
Test Hardware
- KLIPPEL Analyzer (KA3) or
- Production Analyzer (PA)
- Operation with QC Stand-alone Software:
- Smart amplifier providing voltage/current sensing and audio streaming (e.g., Powersoft Mezzo)
License Dongle (USB)
PC
Software
- Included in QC Standard Software from version 1.0 or higher or
- Not available for QC Basic Software
- QC Stand-alone Software
- R&D Software 210 or higher
Accessories
- Power Amplifier
- KA3 Amplifier Card or
- KA3 QC Card or
- 3rd party amplifier
Applications
Application Notes
Related Information
Other Modules of the QC System
- Sound Pressure and Impedance (SPL-IMP):
Combined acoustic and electric measurement dedicated to fast QC testing - Motor + Suspension Check (MSC):
Fast measurement of voice coil offset and suspension asymmetry - Statistics (STAT):
Statistical overview of Klippel measurement data (1D and 2D data), pool-based visualization of measures allows quick assessment of variances and comparisons between test object groups
Related Products
- Linear Parameter Measurement (LPM):
For intermittent testing (without laser measurement) - Multipoint Measurement Tool (MMT):
Post-processing of the results of multiple LPM measurements (dB-Lab 210 and LPM required) - Transfer Function Measurement (TRF):
Measurement of transfer function and harmonic distortion - Live Audio Analyzer (LAA):
Long-term monitoring of 5 signals simultaneously, examine time and frequency data, heating and ageing, measure distortion with music or arbitrary stimulus
Standards
International Electrotechnical Commission
IEC 60268-5, IEC 60268-22, IEC 62459, IEC WD 63034
Audio Engineering Society
AES2, AES X241