The Bluetooth Special Interest Group (SIG) has specified new low-energy (LE) features in Bluetooth 5 that are tailored primarily to Internet of Things (IoT) applications. A key criterion for these applications is the lowest possible power consumption. An option is now available that makes it possible to quadruple the range of Bluetooth connections by transmitting data multiple times. The new specification permits transmission speeds of 1 Mbit/sec and now also 2 Mbit/sec. This optional stable modulation index has been integrated into the Rohde & Schwarz test software.
To permit testing of Bluetooth 5 chipsets and modules, Rohde & Schwarz is bringing software options to the market concurrent with the release of Bluetooth 5. These options, which are activated on CMW testers via licence keys, make it possible to perform all RF measurements that are needed for development and for Bluetooth certification.
The CMW-KM721 software option is used to measure power, modulation and adjacent channel power (ACP) on the transmitter. With the R&S CMW-KS721 software option, receiver measurements can be performed to determine the packet error rate and receiver sensitivity. CMWrun automation software is available for running RF tests in remote control mode, allowing the testers to perform all new test cases at extremely high speed.
The instruments now cover all RF tests defined by Bluetooth SIG, from Bluetooth Basic Rate V1.2 all the way to the new Bluetooth 5 specification for low energy. Since Bluetooth is often deployed together with other wireless technologies, it makes sense to use interoperability tests on all supported wireless technologies on these instruments and systems. R&S says that the CMW testers are currently the only products on the market that deliver RF tests on Bluetooth and cellular radio signals such as LTE-A, WCDMA, GSM and CDMA2000, as well as non-cellular radio signals such as WLAN, ZigBee and GNSS, using a single instrument.