The RFWattmeter™ measures and passes signals from 100 kHz to 10 MHz, up to 2,000 watts full scale, with minimal loss.
The RFWattmeter™ is enclosed in a handheld plastic housing with BNC connectors, a DC power connector, a micro-B USB connector, and an optional SMB connector for triggering an oscilloscope or other DAQ device.
RFWattmeter Selection Matrix
| Model | USB Interface | Power Scale ( Watts ) |
Resolution ( Watts ) |
Calibration Point ( Watts ) |
Channels |
|---|---|---|---|---|---|
| 21B | 0 – 200 | 0.001 | 20 | 1 | |
| 22B | 0 – 2,000 | 0.01 | 200 | 1 | |
| 23B | ✔ | 0 – 200 | 0.001 | 20 | 1 |
| 24B | ✔ | 0 – 2,000 | 0.01 | 200 | 1 |
| 25B | ✔ | 0 – 200 | 0.001 | 20 | 4 |
Technical Specifications
- Analog signal output: Average power, voltage and current
- Screen output data: Average power (P), voltage (V), current (I), impedance magnitude (Z) and phase angle (A)
- Sample rate: 8-64 samples/second (up to 800 Samples/second with custom software)
- Loss through meter: <0.01 dB at 50 Ω
- Calibration point: 20 Watts into 50 Ω at 2.5 MHz* on 200 W Range; 200 watts into 50 Ω at 2.5 MHz* on 2,000 W Range
- RF connectors: BNC(f) Input and Output
- Load impedance: 50 Ω (nom.), 10 – 250 Ω OK
- Power supply: Wall Wart AC/DC adapter with interchangeable international plug adapters included (battery powered optional): 100-240 VAC 50-60 Hz input, 6 VDC output
- Frequency: 100 kHz to 10 MHz (other frequencies available upon request)
- Accuracy: Accurate to +- 2.5% across the bandwidth. Full characterization upon request at additional charge.
* Other calibration frequencies available upon request
Calibration Details
Calibration is performed using an absorptive power meter as a reference standard. An included certificate of calibration lists calibration conditions and reading accuracy deviations. A detailed test report will be provided upon request at an additional charge, which includes plots of the RFWattmeter’s frequency response and power linearity.
Reference meter
Agilent/HP EPM-441A RF power meter
Agilent/HP 8482H RF power sensor, calibrated 0.1 MHz – 4.2 GHz
Bird model 8322 RF attenuator 200 watts continuous, 30 dB, 50 Ω