Radio communication test sets are multifunctional devices capable of performing measurements on radio systems (or communication devices) to diagnose their performance and physical condition. Often, test diagnosis is carried out by modulating and demodulating the RF (Radio Frequency) signals. However, modern radio tests sets can also modulate and demodulate CW, AM, FM, PM, and SSB signals and validate a range of Land Mobile Radio (LMR) technologies, including P25 Phase 1 and 2, DMR, NXDN, TETRA, and dPMR devices.
Although several test sets are available, majorly they can be classified depending on the operating principle, type of compatible devices, and the measurement technologies available.
Test sets are classified into Analog and Digital types. As the name indicates, analog test sets contain the conventional needle system to pinpoint the reading, manually interpreting and comparing with standard measurements. The following parameters can be measured using an analog test set:
A digital test set is a microprocessor-controlled, digitally synthesized, battery-operated communication service monitor, which integrates the functions of several different test instruments into a single, compact, and portable unit. The following parameters can be measured using a digital test set:
Digital radio test sets are the latest evolution in radio communications test equipment and are easy to use with superior service life. Advantages of a Digital Radio Test Set compared with an Analog system are as follows:
A Radio test set can be used to test simplex communication systems (radios) and/or duplex communication equipment (mobile telephone systems). Simplex communicating devices can communicate only in a particular direction at any given point in time. In contrast, Duplex-operated devices can transmit on one frequency and receive on another frequency between two locations. Simplex-type systems include radios, press-to-talk operated, transmit-receive (manual or automatic) equipment. Whereas, Duplex-operated devices are cellular phones or repeaters.
Digital radio test sets, as mentioned, are the latest evolution in radio communications test equipment and can perform digital signal processing, making them compatible with cutting-edge systems. Following are certain advanced radio systems, which can be tested with digital radio test sets:
Following are the procedures prescribed by OEMs to operate and calibrate a radio test set:
Although modern radio test sets are rugged and portable, their accuracy is dependent on the operators’ skill and calibration frequency.
Though radio communication test sets operation seems straightforward, the equipment needs to be calibrated and maintained following OEM operation guidelines. To comply with international standards, an annual calibration process should support the repeatability and accuracy of radio test sets.
e2b calibration offers industry-leading ISO-certified radio test set calibration services. Our labs are ISO/IEC 17025 accredited and operated by a team of qualified calibration experts to test and calibrate your test sets. Our verifiable services are unmatched in the industry. We are registered with ANAB. We are also ANSI/NCSL Z540-1-1994 certified. We have the NIST Traceable Wide scope of ISO/IEC 17025 accreditation. Contact e2b calibration for all your equipment calibration needs.