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SPM power sensor
SPM-18 power sensor is designed to measure power of continuous harmonic microwave signals. The diode detector is used as conversion element, which provides measurements in wide dynamic and frequency ranges.

SPM power sensors are used in manufacturing, tuning and testing of equipment and microwave assemblies for radio electronics, communications, instrument engineering and measuring equipment, both in laboratory and in field.

Main capabilities
• Power measuring of continuously generated microwave
oscillations from 0.01 GHz to 18 GHz;
• Absolute and relative power measurement modes;
• Displaying results in linear and logarithmic scales;
• Logging measured data in computer file;
• Correction of measured data in accordance with external
device transmission coefficient;
• Audible notification when the measured value exceeds
the specified range.
Ordering information
Basic supply set
1) Power sensor SPM-18.
2) USB cable: type A-B, 1.8 m.
3) USB charger: 5V, 1000 mA.
4) Operational documentation.
5) Carrying case.
Additional accessories
Upon request, the power sensors may be supplied with microwave cable assemblies, adapter kits, attenuators.

ParameterTypical value
Operating frequency range10 MHz…18 GHz
Power measurement range−50…+20 dBm (10 nW…100 mW)
Maximum allowable basic measurement error±8.0%
±0.33 dB
Input VSWR
10 MHz to 18 GHz1.3
Wave impedance50 Ω
Conncector typeN (male)
Continuous battery operation time, min.
with backlight8 hours
without display backlight16 hours
Charging time, max.
with charger3 hours
via USB port8 hours
Operating conditions
ambient temperature+5…+40 °С
relative humidity at 30 °C, max.90%
atmospheric pressure537…800 mmHg
Dimensions (LxWxH)177 × 48 × 32.5 mm
Weight0.35 kg