Absolute amplitude accuracy, reference level and attenuator accuracy, frequency response, log fidelity, span and marker accuracy, and CISPR detector response measured on site under LAB Support Ltd.'s A2LA accredited ISO/IEC 17025 scope.
An EMI receiver must meet CISPR 16-1-1 for absolute accuracy, bandwidths, quasi-peak, average and RMS-average detector response, overload behaviour and pulse response. The manufacturer's self-test does not cover these against traceable standards. An ISO/IEC 17025 certificate with the receiver's measured amplitude error at the frequencies you use is what your uncertainty budget and your assessor need.
| Parameter | Range | Common methods and standards |
|---|---|---|
| Absolute amplitude accuracy, frequency response | 9 kHz to 40 GHz | CISPR 16-1-1, ANSI C63.2, signal generator and power meter |
| Reference level and marker display level accuracy | 9 kHz to 40 GHz | CISPR 16-1-1, signal generator, step attenuator |
| Attenuator accuracy | 0 dB to 115 dB | Step attenuator, power meter |
| Log fidelity | 9 kHz to 26.5 GHz | Signal generator, step attenuator |
| Span and frequency readout accuracy | 1 Hz to 40 GHz | Frequency reference |
| CISPR detector response, pulse response, bandwidths | 9 kHz to 1 GHz | CISPR 16-1-1, pulse generator, signal generator |
The methods and standards shown are the ones most commonly requested. Within each parameter and range listed on the accredited scope, other calibration methods and standard editions can be supported under the flexible-scope provisions of LAB Support's A2LA accreditation. The measurement uncertainty for each parameter is stated on the certificate. Field calibration is included in the scope for every line above.
From our own calibration records. Any instrument within the scope can be calibrated; these are the ones we see most.
Yes. Quasi-peak, average and RMS-average detector response is checked with the pulse repetition rates CISPR 16-1-1 lists, not only with CW signals.
Yes. Amplitude accuracy is measured with and without the preamplifier, and with the preselector where fitted, so all the paths you use are covered.
The certificate reports measured values. Where the manufacturer allows user adjustment it can be performed and the instrument re-measured; otherwise out-of-tolerance results are reported for your action.
Malaysia, Singapore and Vietnam, with Penang as the base. Other locations on request.
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