2975Aeroflex?2975?综合测试仪

2975Aeroflex?2975?综合测试仪

Aeroflex公司通过IFR 2975无线电测试集和1.9.1版本软件提供PassPort测试。该公司此次增添了新的测试功能，并提供五种新选件。其中四种分别为

P25显式报文、P25二级控制信道广播(SCCB)报文、P25相邻状态广播报文和P25机对机/PSTN互连。此外，1.9.1版本还包括清除音频电路的新音频跟踪信号发生器、改进的LTR中继功能，以及新示波器和音频分析仪标志器。

新选件拓展了Aeroflex在提供全面P25测试方面的领先地位。用户现可订购这五种新无线电测试选件。其中四种新选件在30天的“先试后买”期间内，可从网站 订购。 PassPort不提供“先试后买”服务：PassPort无线电协议选件提供了最新的PassPort无线电和中继器测试功能，包括VHF PassPort功能。 显式报文：支持面向中继VHF/UHF无线电系统的显式报文，这些无线电系统使用面向最新P25中继系统的扩展报文。 SCCB报文：支持针对显式或正常P25中继运行的二级控制信道广播报文。该功能使用户能够设置模拟的控制信道，以验证P25无线电如何切换到二级控制信道。 相邻状态广播报文：支持针对显式P25中继运行的相邻信道广播报文。该功能使用户能够设置模拟的相邻控制信道，以验证P25无线电如何在漫游模式下切换到相邻控制信道。

机对机与PSTN互连：支持显式运行模式下的机对机和PSTN互连呼叫。该功能使用户能够验证无线电是否能够生成及接收机对机和PSTN呼叫。 新PMR测试功能均标配有升级功能。1.9.1版本中包含的新功能有：支持用于整合双信道示波器的范围标志器；屏幕捕获功能；用于音频功能生成器的Vrms选件；从AM、FM 或P25 无线电系统恢复解调 的音频，并使用该音频来调制AM、FM 或P25载波的解调音频路由生成器；自动从STD511 V.52音调接收、解调和计算误码率(BER)，以帮助调谐市场中部署的各种发送器的的STD511音调。

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.