Calibration Services by Schwarzbeck
As an international manufacturer of precision measurement technology with over 60 years of experience, Schwarzbeck has its own laboratory facilities to calibrate a variety of instruments, antennas, and measurement equipment for EMC and RF technology.
We offer you the possibility to calibrate your devices with us, regardless of the manufacturer. We also calibrate your own developments.
You will receive an ISO 17025 compliant calibration certificate with all necessary information, as well as the calibration data as a graph and table on paper. If desired, we can send the calibration data as *.txt or *.xls file by email.
Available Calibrations
- Antennas
- LISN Line Impedance Stabilisation Networks / AMN Artificial Mains Network
- Pulse Generators
- Current Transformer Clamps
- Voltage Probes
- CDNs, ISN
- EMI-Receivers
Measurands
The most important measurands that can be calibrated in our calibration laboratory according to ISO 17025 are:
- Antenna factor k
- Antenna gain g
- Radiation pattern
- E-field strength
- H-field strength
- VSWR
- Impedance
- Attenuation
- Frequency
- Voltage
- Current
- Power
Traceability
The traceability to DKD standards can be done for the frequency range from 0 to 40 GHz. There are selected meaningful frequency intervals for the application of the calibration data, ensuring a sufficient number of data points to minimize interpolation. All antennas and equipment are generally calibrated in as wide a frequency range as possible and in sufficiently narrow frequency steps.
Uncertainty
The achievable accuracy depends on the calibration method and the calibration object. It will be shown in each calibration certificate. The following table shows the reached measurement uncertainty by Schwarzbeck at the 2011/2012 DKD intercomparison for free-space antenna factor:
| Antenna type | Frequency range | Uncertainty |
|---|---|---|
| Biconical Antenna | 30-300 MHz | < 0.5 dB |
| LPDA | 200-1000 MHz | < 0.4 dB |
| Stacked LPDA | 1-26.5 GHz | < 0.8 dB (f < 18 GHz); < 1.4 dB (f < 26.5 GHz) |
More information about our calibration service can be found here.