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Software tests DMR, NXDN digital radio standards

Posted: 17 Mar 2011     Print Version  Bookmark and Share

Keywords:radio test  hand-held  digital radio standards 

Aeroflex Inc. presents software version 3.8.0 that offers two digital radio test options for the 3500A Hand-held Radio Test Set extending test capabilities to include testing of Digital Mobile Radio (DMR) and NXDN digital narrowband mobile stations and repeaters targeting the latest land mobile digital radio standards.

This testing includes the ability to measure the key RF parameters of the DMR and NXDN digital modulation including FSK error, symbol deviation, frequency error, and power.

NXDN is a very narrowband radio system based on the radio standard developed by the NXDN Forum. With the 3500A, users will be able to verify that the transmitter and receiver of the NXDN radio are operating correctly by measuring key RF parameters. Included in these measurements are the modulation fidelity parameters: FSK error, symbol deviation, and frequency error. The 3500A can also generate several modulation patterns that verify the operation of a NXDN receiver. These modulation patterns can be used for receiver bit error rate testing as well as tone generation. With a user-defined Radio Access Number (RAN), technicians can test a NXDN radio without putting it into test mode.

DMR is a two slot TDMA standard based on ETSI TS 102 361-1. The 3500A performs the RF testing required to ensure that the DMR modulation is performing according to this specification. This testing includes measuring key modulation fidelity parameters such as FSK error, symbol deviation, and frequency error.

The 3500A also measures the power in the slots and the amount of magnitude error over a burst. With the capability of encoding and decoding the colour code and radio ID, the 3500A can even verify the operation of a DMR radio without having to put the radio into a special test mode. The 3500A includes the capability to simulate a base repeater.

The 3500A Series is designed to test key radio parameters. With test capabilities for testing AM, FM, P25, and now DMR and NXDN radios, the 3500A provides an integrated power meter, RF frequency counter, modulation tests, extensive audio tests including SINAD and Distortion analysis. A 1GHz spectrum analyser and audio oscilloscope can be ordered as options.

The 3500A Hand-held Digital Radio Set can be delivered within 8-10 weeks upon receipt of order. The 3500A Series is field-upgradeable to include the latest software features.





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