Radio test update

Aeroflex has available the latest version of software for the 2975 Project 25 radio test set. Release 1.9.2 delivers new test features designed to provide additional test data for P25 radios.

It adds the functionality of an eye diagram for P25 waveform analysis. With this, users can see the C4FM deviation points as well as any offset or imbalance in the four frequency levels corresponding to the C4FM modulation (±600 Hz and ±1800 Hz). The diagram feature is included in option 2975OPT30 modulation analysis.

In addition, release 1.9.2 has a new option configuration to simplify ordering LSM test options. Options 11 (LSM/Phase 2) and 13 (LSM advanced/P25 phase 2 advanced) have now been combined into a single option. Option 2975OPT29 CQPSK generate/receive and analysis provides tests for linear simulcast modulation.

The 2975 is a digital radio test platform for radio equipment to ensure proper operation to various Project 25 standards, including parametric testing for compatible four-level frequency modulation and interoperability test of P25 systems. As well as standard analog test features, it provides P25 trunking support for VHF/UHF/700 and 800 MHz bands, SmartNet/SmartZone support, AES and DES encryption support, control message logging, encryption key management facilities, CQPSK generate and receive testing, and CQPSK analysis for linear simulcast modulation systems.