2975Aeroflex?2975?綜合測試儀

Aeroflex公司通過IFR 2975無線電測試集和1.9.1版本軟件提供PassPort測試。該公司此次增添了新的測試功能，并提供五種新選件。其中四種分別為

P25顯式報文、P25二級控制信道廣播(SCCB)報文、P25相鄰狀態廣播報文和P25機對機/PSTN互連。此外，1.9.1版本還包括清除音頻電路的新音頻跟蹤信號發生器、改進的LTR中繼功能，以及新示波器和音頻分析儀標志器。

新選件拓展了Aeroflex在提供全面P25測試方面的領先地位。用戶現可訂購這五種新無線電測試選件。其中四種新選件在30天的“先試后買”期間內，可從網站 訂購。 PassPort不提供“先試后買”服務：PassPort無線電協議選件提供了最新的PassPort無線電和中繼器測試功能，包括VHF PassPort功能。 顯式報文：支持面向中繼VHF/UHF無線電系統的顯式報文，這些無線電系統使用面向最新P25中繼系統的擴展報文。 SCCB報文：支持針對顯式或正常P25中繼運行的二級控制信道廣播報文。該功能使用戶能夠設置模擬的控制信道，以驗證P25無線電如何切換到二級控制信道。 相鄰狀態廣播報文：支持針對顯式P25中繼運行的相鄰信道廣播報文。該功能使用戶能夠設置模擬的相鄰控制信道，以驗證P25無線電如何在漫游模式下切換到相鄰控制信道。

機對機與PSTN互連：支持顯式運行模式下的機對機和PSTN互連呼叫。該功能使用戶能夠驗證無線電是否能夠生成及接收機對機和PSTN呼叫。 新PMR測試功能均標配有升級功能。1.9.1版本中包含的新功能有：支持用于整合雙信道示波器的范圍標志器；屏幕捕獲功能；用于音頻功能生成器的Vrms選件；從AM、FM 或P25 無線電系統恢復解調 的音頻，并使用該音頻來調制AM、FM 或P25載波的解調音頻路由生成器；自動從STD511 V.52音調接收、解調和計算誤碼率(BER)，以幫助調諧市場中部署的各種發送器的的STD511音調。

IFR 2975 About re-banding of 800 MHZ public mobile radio systems To improve public safety communications and as part of a legal settlement, in 2005 the FCC ruled that all 800 MHz radio systems in the United States would be modified to eliminate interference with public safety communication systems from some cellular operators. The main goal of re-banding is to eliminate interference by changing public mobile radio broadcasting frequencies in the 800 MHz spectrum. This requires retuning, reprogramming and/or replacing all subscriber units and modifications to tower sites to broadcast on the new frequencies. Users of PMR systems will need to verify that their systems are now working in the new frequency band. The 2975 P25 Radio Test Set will enable PMR system owners a quick and easy way to validate their systems.About the Aeroflex 2975 P25 Radio Test Set The 2975 P25 Radio Test Set is a digital radio test platform that tests radio equipment to ensure proper operation to various P25 standards, including advanced parametric testing for compatible four-level frequency modulation and interoperability testing of P25 systems. As well as standard analog test features, the 2975 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 advanced CQPSK analysis for Linear Simulcast Modulation systems.Created with a modular design, the 2975 is simple to support and upgrade. Its 40 GB internal hard drive maximizes flexibility in storage and recall of setup information and test data. Software upgrades can be downloaded from Aeroflex’s website allowing features to be added as new radio-specific tests are developed, reducing ownership and life-cycle costs.