We are professional, accurate, and responsive in meeting your requirements for electromagnetic compatibility testing and certification. Our measurements, test reports, and certificates assure EMC compatibility of your product in all important markets. We provide our professional assistance already at the stage of development when we can carry out partial critical tests of individual devices. Our experts follow development trends in the field of electromagnetic compatibility of devices, and our laboratory has a modern equipment.
AMN/LISN calibration is performed according to CISPR 16-1-2, ISO 7637 or CISPR 25/ISO 11452-4. Standard calibration parameters are:
- impedance (magnitude and phase)
- Voltage Division Factor
SIQ also calibrates asymmetric (common mode) artificial networks (AANs), where main calibrated parameter is Longitudinal Conversion Loss (LCL). Calibration of 1 and 3 phase LISN connectors are also supported.
Surge generator calibration is performed according to IEC 61000-4-5. Standard calibration parameters are:
- open circuit peak voltage
- duration and front time
- short circuit peak current duration
- front time
Calibration can be also provided for coupling and decoupling networks for different coupling impedances, symmetrical and unsymmetrical interconnection lines.
Burst generator calibration is performed according to IEC 61000-4-4. Standard calibration parameters are:
- open circuit output test voltage
- burst duration
- repetition frequency, burst period
- burst period
Calibration is performed into 50 Ω and into 1000 Ω load.
Capacitive Clamp is calibrated using burst generator, where transient signal is introduced to capacitive clamp and measured with transducer plate terminated with 50 Ω load. Calibration parameters are:
- rise time
- pulse width and
- peak voltage
Calibration of voltage dips, short interruptions and voltage variation generators is performed according to IEC 61000-4-11 with parameters:
- output voltage
- transition time/rise time and
- phase angle accuracy
Calibration is performed at 90° and 270° at 50 Hz or 60 Hz. Voltage dip transformer to generate 80%, 70% and 40% dip should be applied to generator in case it is not integrated into test equipment.
Ring wave generator calibration is performed according to EN 61000-4-12, which requires calibration of the following parameters:
- voltage rise time
- current rise time
- voltage oscillation frequency
- repetition rate
- output impedance
- open-circuit peak voltage
- short-circuit peak current and
- phase shifting
Damped oscillatory test generator calibration is performed according to EN 61000-4-18, which requires calibration of the following parameters:
- voltage rise time
- oscillation frequency
- repetition rate
- burst duration
- open-circuit voltage and
- short-circuit current
ESD simulator calibration can be calibrated according to IEC 61000-4-2 and ISO 10605. SIQ can calibrate the following RC modules:
- 150 pF/330 Ω
- 330 pF/330 Ω
- 150 pF/2000 Ω and
- 330 pF/2000 Ω
Standards require calibration of the following parameters of ESD impulse:
- peak current
- current at 30 ns, 65 ns, 180 ns, 400 ns, 60 ns, 130 ns, 360 ns and 800 ns
- rise time and
- open circuit voltage
Calibration can be performed up to 30 kV.
SIQ can also calibrate ESD target, which is used for ESD simulator calibration. Calibration is in line with IEC 61000-4-2, which requires calibration of the following parameters:
- transfer impedance
- input resistance
Current probe calibration is performed according to CISPR 16-1-2 in the sense of transfer impedance. Measurements are made on special calibration JIG, which enables calibration up to 500 MHz. We also calibrate BCI Probes (Bulk Current Injection probes), which are used in ISO 11452-4, Mil -STD-461, RTCA/DO-160 and EN/IEC 61000-4-6. Calibration is performed on special BCI jig, which enables transfer impedance calibration up to 1 GHz.
Low frequency transfer impedance is calibrated by injecting direct current into current probe using High Precision Multi-Product Calibrator as Fluke 5500A.
Absorbing clamp calibration is performed according to CISPR 16-1-3 and can be calibrated with the original and the JIG method. The most prominent parameter of absorbing clamp is CF (clamp factor) which is used to calculate a disturbance power on EUT line by measuring output voltage on measuring receiver on 50 Ω system. Additional parameters to describe an absorbing clamp is decoupling factor for the broadband absorber DF and a decoupling factor for the current transformer DR.
CDN calibration is performed according to IEC 61000-4-6 and CISPR 15. Calibration points include measurements of:
- common mode impedance on EUT side with AUX shorted and open, respectively.
- additionally, we calibrate voltage division factor according to CISPR 15.
Calibration can be performed on different types of connectors e.g., 1-phase, 3 phase, USB, UTP unshielded, UTP shielded, telephone RJ11 etc.
Injection clamp calibration is performed according to IEC 61000-4-6. Calibration points include measurements of:
- impedance on EUT side
- decoupling factor between EUT and AE and
- coupling factor between injection input connector and EUT
Impedance is calibrated using ABCD matrix generation and special renormalization technique, which analytically removes errors introduced by applied connectors. This also enables traceability of calibration to the SI unit definition.
EMI receiver calibration is performed according to CISPR 16-1-1, which requires calibration of the following parameters:
- average and
- CRMS detectors
Calibration is performed for frequency bands A, B, C, D and E.
Current harmonics analyzer calibration is performed according to EN IEC 61000-3-2. Calibration can be performed for 50 Hz and 60 Hz system for Class A, B, C and D. Additionally we can calibrate:
- test voltage
- test current
- test frequency and
- power factor
Flicker analyzer calibration is performed according to IEC 61000-3-3. Calibration can be realized for 50 Hz and 60 Hz system. Flicker is calibrated using reference power standard that generates different combinations of flicker parameters so that PST is always 1.
Flicker impedance (resistance and reactance) is measured for each line separately using reference LCR meter with HI power option integrated.
CMAD calibration is performed according to CISPR 16-1-4, which requires calibration of:
- S11 and
Measurements are performed on specially designed calibration fixture – JIG. Calibration procedure uses ABCD matrix to transform measured S-parameters to correct calibration JIG influence.