Bluetooth Low Energy (LE) has emerged as a major transmission technology for the Internet of Things (IoT). Bluetooth LE components are found in a variety of applications in the automotive industry, in sports and healthcare, in consumer electronics and smart homes, and in other areas. Many of these radio sensors are very small and integrated into equipment. When drafting the Bluetooth LE test specifications in 2010, Bluetooth SIG specified a direct test mode via a control line but did not specify an OTA signaling test mode. Many small Bluetooth LE devices offer no port or interface to connect a control line.
The test system uses OTA measurements on a CMW270 wireless connectivity tester to verify the RF properties and performance of Bluetooth LE devices in operating mode. The DUT's signal level, modulation and receiver sensitivity, among other parameters, can be determined in this way. The Bluetooth LE signaling functionality of the CMW270 provides the basis for the complex measurements and the wide variety of Bluetooth applications that have emerged as a result of the tremendous growth in the IoT sector. That makes the RCMW platform a safe investment also for coming generations of Bluetooth specifications.
The CMW270 delivers the full range of Bluetooth RF tests, including Bluetooth Classic, Bluetooth LE, and the latest standard, Bluetooth 5. Users can perform signaling tests and tests in direct test mode, as well as numerous audio tests on Bluetooth basic rate/enhanced data rate (BR/EDR) links. The CMW270 is especially suitable for tests during development and for preconformance tests in preparation for Bluetooth SIG qualification.