Overview
The Narda FieldMan performs highly accurate measurements of non-ionizing high-frequency radiation and lowfrequency fields. Equipped with digital probes for measuring electric or magnetic field strengths, it covers the range from static and low-frequency fields in medical and industrial applications to mobile radio frequencies and millimeter waves. Flat frequency response probes (“flat probes”), as well as so-called shaped probes that evaluate the field strength on the basis of a human safety standard are available. Probes with built-in FFT analysis enable spectral measurements along with time domain analyses up to frequencies of 400 kHz. All probes have a digital interface that transmits the measurement data to the basic device in a fail-safe manner. This eliminates the need to calibrate the basic unit.
The FieldMan is available in two device variants, one with radio communication and voice recording and a radio-free device without microphone.
- Non-directional measurement using isotropic probes for applications in the frequency range
0 Hz (DC) to 90 GHz - Large sunlight readable color display
- 5” diagonal with 1280x720 HD resolution
- Digital probe interface for broadband and selective probes – no more meter calibration
- Powerful time and frequency domain analysis for low frequency fields up to 400 kHz including Weighted Peak measurements
- Variant with optional WiFi / Bluetooth interface for remote control via smartphone app
- Built-in GPS receiver and rangefinder for easy location determination (Option)
- Fast data transmission
› optical interface
› Ethernet
› USB-C
Applications
The Narda FieldMan is used to make precision measurements to establish human safety, particularly in workplace environments where high electric or magnetic field strengths are likely to occur. An essential task is to demonstrate compliance with general safety regulations, such as FCC, IEEE, ICNIRP or EMF Directive 2013/35/EU. Examples of measurement environments are:
- Radiocommunication base stations (e.g. IEC / EN 62232)
- Broadcasting systems (e.g. IEC 62577)
- Radar and satellite communications systems
- Induction heating and melting (e.g. EN 50519)
- Household appliances (e.g. IEC / EN 62233)
- Electric welding equipment (e.g. IEC / EN 62822)
- Railroad operations (e.g. EN 50500)
- Automotive operations (e.g. IEC 62764)
- Energy supply systems (e.g. IEC / EN 62110)
- Electrical medical devices (e.g. IEC / EN 60601)
- TEM cells and absorber chambers to demonstrate electromagnetic compatibility (EMC)
Digital Probes
A large number of isotropic field probes are available for the FieldMan. All of them transmit their information and measurement data as a digital signal to the FieldMan, either via an electrical USB interface or via an optical COM interface. In this way, interference is significantly reduced compared to high-resistance analog interfaces. The specially developed screw connectors and electrical contacts are extremely robust and resilient. The probes are automatically recognized after connection to the FieldMan. Sensors inside the probe record the temperature of the measuring location and transmit it to the FieldMan display. In addition to the automatic offset correction, the temperature measurement is also used to compensate for the typical temperature dependency of the sensor diodes. The advantages are uninterrupted measurements without zero adjustment and higher measurement accuracy over wide temperature ranges. An automatic self-test function can even detect possible errors in the sensor system, which means that additional checking with a test generator is superfluous. Only the digital probes are calibrated. You can continue to use your FieldMan during this time.
There are probes for many different applications with the appropriate frequency and level ranges. The following table gives an overview of common areas of application.
