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CNAS
CNAS Accredited Calibration Center

In 2023, WELZEK established an accredited metrology center.

In 2025, the WELZEK Metrology Center passed the CNAS re-assessment and was re-accredited.

Annual Calibration & Metrology Services for Wireless Communication Testers
Annual Calibration & Metrology Services for Programmable Power Supplies

CNAS Service

  1. 01DC Stabilized Power Supply

    • GSM Analyzer Modulation – Frequency Error Measurement
    • Output SSB Phase Noise
    • GSM Analyzer Modulation – RMS Phase Error Measurement
    • RF Analyzer Power Measurement
    • GSM Analyzer Modulation – Peak Phase Error Measurement
    • GSM Signal Generator Digital Modulation – Frequency Error
    • RF Input Port VSWR
  2. 02TDMA-GSM

    • Source Output Frequency
    • GSM Signal Generator Digital Modulation – RMS Phase Error
    • Source Output Power
    • GSM Signal Generator Digital Modulation – Peak Phase Error
    • Spectrum Purity
    • GSM Analyzer Modulation – Frequency Error Measurement
    • Output SSB Phase Noise
    • GSM Analyzer Modulation – RMS Phase Error Measurement
    • RF Analyzer Power Measurement
    • GSM Analyzer Modulation – Peak Phase Error Measurement
    • GSM Signal Generator Digital Modulation – Frequency Error
    • RF Input Port VSWR
  3. 03CDMA

    • Source Output Frequency
    • Source Output Power
    • Spectrum Purity
    • Output SSB Phase Noise
    • CDMA Signal Generator Digital Modulation – Waveform Quality
    • CDMA Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
    • CDMA Signal Generator Digital Modulation – Frequency Error
    • CDMA Signal Generator Occupied Bandwidth
    • CDMA Digital Modulation Signal Generator Unit Code Success Rate
    • CDMA Digital Modulation Signal Generator Unit ACPR
    • CDMA Signal Generator Power
    • RF Analyzer Power Measurement
    • CDMA Analyzer Demodulation – Waveform Quality Measurement
    • CDMA Analyzer Demodulation – EVM Measurement
    • CDMA Analyzer Demodulation – Frequency Error Measurement
    • CDMA Analyzer Demodulation – RMS Phase Error Measurement
    • RF Input Port VSWR
  4. 04WCDMA

    • Source Output Frequency
    • Source Output Power
    • Spectrum Purity
    • Output SSB Phase Noise
    • WCDMA Signal Generator Power
    • WCDMA Signal Generator Digital Modulation – Waveform Quality
    • WCDMA Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
    • WCDMA Signal Generator Digital Modulation – Frequency Error
    • WCDMA Signal Generator Occupied Bandwidth
    • WCDMA Peak Code Domain Error (PCDE)
    • WCDMA Adjacent Channel Power Ratio (ACPR)
    • WCDMA Spectrum Emission Mask (SEM)
    • RF Analyzer Power Measurement
    • WCDMA Analyzer Demodulation – Waveform Quality Measurement
    • WCDMA Analyzer Demodulation – EVM Measurement
    • WCDMA Analyzer Demodulation – Frequency Error Measurement
    • WCDMA Analyzer Demodulation – RMS Phase Error Measurement
    • RF Input Port VSWR
  5. 05LTE

    • Source Output Frequency
    • Source Output Power
    • Spectrum Purity
    • Output SSB Phase Noise
    • LTE Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
    • LTE Signal Generator Digital Modulation – Frequency Error
    • LTE Signal Generator Digital Modulation – IQ Origin Offset
    • LTE Signal Generator Occupied Bandwidth
    • LTE Signal Generator Adjacent Channel Power Ratio (ACPR)
    • LTE Spectrum Emission Mask (SEM)
    • RF Analyzer Power Measurement
    • LTE Analyzer Demodulation – EVM Measurement
    • LTE Analyzer Demodulation – Frequency Error Measurement
    • RF Input Port VSWR
  6. 06Bluetooth Tester

    • Source Output Frequency
    • Source Output Power
    • Spectrum Purity
    • Output SSB Phase Noise
    • RF Analyzer Power
    • Bluetooth Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
    • Bluetooth Signal Generator Digital Modulation – Frequency Error
    • Bluetooth Signal Generator Digital Modulation – Frequency Offset
    • Bluetooth Signal Generator Occupied Bandwidth
    • Bluetooth Analyzer Frequency Measurement
    • Bluetooth Analyzer Demodulation – EVM
    • Bluetooth Analyzer Demodulation – Frequency Error Measurement
    • Bluetooth Analyzer Demodulation – Modulation Frequency Deviation Measurement
    • RF Input Port VSWR
  7. 07Wireless LAN Tester

    • Source Output Frequency
    • Source Output Power
    • Spectral Purity
    • Output SSB Phase Noise
    • RF Analyzer Power
    • WLAN Signal Generator Digital Modulation – EVM
    • WLAN Signal Generator Digital Modulation – Frequency Error
    • WLAN Signal Generator Digital Modulation – Symbol Clock Error
    • WLAN Signal Generator Power
    • WLAN Analyzer Modulation Power Measurement
    • WLAN Analyzer Modulation Quality – EVM Measurement
    • WLAN Analyzer Modulation Quality – Frequency Error Measurement
    • WLAN Analyzer Modulation Quality – Symbol Clock Error Measurement
    • RF Input Port VSWR
  • GSM Analyzer Modulation – Frequency Error Measurement
  • Output SSB Phase Noise
  • GSM Analyzer Modulation – RMS Phase Error Measurement
  • RF Analyzer Power Measurement
  • GSM Analyzer Modulation – Peak Phase Error Measurement
  • GSM Signal Generator Digital Modulation – Frequency Error
  • RF Input Port VSWR
  • Source Output Frequency
  • GSM Signal Generator Digital Modulation – RMS Phase Error
  • Source Output Power
  • GSM Signal Generator Digital Modulation – Peak Phase Error
  • Spectrum Purity
  • GSM Analyzer Modulation – Frequency Error Measurement
  • Output SSB Phase Noise
  • GSM Analyzer Modulation – RMS Phase Error Measurement
  • RF Analyzer Power Measurement
  • GSM Analyzer Modulation – Peak Phase Error Measurement
  • GSM Signal Generator Digital Modulation – Frequency Error
  • RF Input Port VSWR
  • Source Output Frequency
  • Source Output Power
  • Spectrum Purity
  • Output SSB Phase Noise
  • CDMA Signal Generator Digital Modulation – Waveform Quality
  • CDMA Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
  • CDMA Signal Generator Digital Modulation – Frequency Error
  • CDMA Signal Generator Occupied Bandwidth
  • CDMA Digital Modulation Signal Generator Unit Code Success Rate
  • CDMA Digital Modulation Signal Generator Unit ACPR
  • CDMA Signal Generator Power
  • RF Analyzer Power Measurement
  • CDMA Analyzer Demodulation – Waveform Quality Measurement
  • CDMA Analyzer Demodulation – EVM Measurement
  • CDMA Analyzer Demodulation – Frequency Error Measurement
  • CDMA Analyzer Demodulation – RMS Phase Error Measurement
  • RF Input Port VSWR
  • Source Output Frequency
  • Source Output Power
  • Spectrum Purity
  • Output SSB Phase Noise
  • WCDMA Signal Generator Power
  • WCDMA Signal Generator Digital Modulation – Waveform Quality
  • WCDMA Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
  • WCDMA Signal Generator Digital Modulation – Frequency Error
  • WCDMA Signal Generator Occupied Bandwidth
  • WCDMA Peak Code Domain Error (PCDE)
  • WCDMA Adjacent Channel Power Ratio (ACPR)
  • WCDMA Spectrum Emission Mask (SEM)
  • RF Analyzer Power Measurement
  • WCDMA Analyzer Demodulation – Waveform Quality Measurement
  • WCDMA Analyzer Demodulation – EVM Measurement
  • WCDMA Analyzer Demodulation – Frequency Error Measurement
  • WCDMA Analyzer Demodulation – RMS Phase Error Measurement
  • RF Input Port VSWR
  • Source Output Frequency
  • Source Output Power
  • Spectrum Purity
  • Output SSB Phase Noise
  • LTE Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
  • LTE Signal Generator Digital Modulation – Frequency Error
  • LTE Signal Generator Digital Modulation – IQ Origin Offset
  • LTE Signal Generator Occupied Bandwidth
  • LTE Signal Generator Adjacent Channel Power Ratio (ACPR)
  • LTE Spectrum Emission Mask (SEM)
  • RF Analyzer Power Measurement
  • LTE Analyzer Demodulation – EVM Measurement
  • LTE Analyzer Demodulation – Frequency Error Measurement
  • RF Input Port VSWR
  • Source Output Frequency
  • Source Output Power
  • Spectrum Purity
  • Output SSB Phase Noise
  • RF Analyzer Power
  • Bluetooth Signal Generator Digital Modulation – Error Vector Magnitude (EVM)
  • Bluetooth Signal Generator Digital Modulation – Frequency Error
  • Bluetooth Signal Generator Digital Modulation – Frequency Offset
  • Bluetooth Signal Generator Occupied Bandwidth
  • Bluetooth Analyzer Frequency Measurement
  • Bluetooth Analyzer Demodulation – EVM
  • Bluetooth Analyzer Demodulation – Frequency Error Measurement
  • Bluetooth Analyzer Demodulation – Modulation Frequency Deviation Measurement
  • RF Input Port VSWR
  • Source Output Frequency
  • Source Output Power
  • Spectral Purity
  • Output SSB Phase Noise
  • RF Analyzer Power
  • WLAN Signal Generator Digital Modulation – EVM
  • WLAN Signal Generator Digital Modulation – Frequency Error
  • WLAN Signal Generator Digital Modulation – Symbol Clock Error
  • WLAN Signal Generator Power
  • WLAN Analyzer Modulation Power Measurement
  • WLAN Analyzer Modulation Quality – EVM Measurement
  • WLAN Analyzer Modulation Quality – Frequency Error Measurement
  • WLAN Analyzer Modulation Quality – Symbol Clock Error Measurement
  • RF Input Port VSWR
T8290A Standard Instrument

The WELZEK Electronics T8290A is a CNAS-certified signal generator and analyzer that serves as a standard instrument for R&D and production testing scenarios.

Main parameters

Frequency range
100MHz-22GHz
Bandwidth
2GHz
Channels and ports
2 channels, 32 ports
VSG/SA EVM
<-50dB (WiFi7,7GHz,320MHz MCS13)
MIMO
Supports 2x2 MIMO with a single instrument
RSE
Supports 3rd harmonic of WiFi 7 at 7.125 GHz
M1000 Metrology System

T8290A Metrology System features high efficiency, multi-functionality, and enhanced portability.

High Efficiency

The T8290A standard instrument features dual-channel, 32 ports, enabling simultaneous calibration of multiple devices under test (DUTs).

Multi-Functionality

Supports 3rd harmonic measurement at WiFi 7.125 GHz,

as well as signal generation and demodulation in spectrum testing.

Portability

The powerful instrument functions of the T8290A make the metrology system more streamlined,

easy to maintain, and ensure operational stability.

M1000 Metrology System Block Diagram
M1000 Metrology System Block Diagram
What is a CNAS Laboratory?

CNAS, China's national accreditation body under CNCA, accredits labs and inspection bodies to enhance their technical competence and management, ensuring accurate, reliable, and traceable test data.



What capabilities do CNAS-accredited laboratories have?

1.Calibration/testing to international standards

2.National accredited lab listing

3.Authorized to use CNAS symbol

4.ILAC member; recognized in 60+ countries

Why should instruments undergo annual calibration?

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