Fast OTA Signaling Tests For BLE Devices


Manufacturers of Bluetooth LE devices and components can use R&S CMW270 wireless connectivity tester from Rohde & Schwarz to conduct over-the-air (OTA) tests on Bluetooth LE devices, same as for Bluetooth Classic devices, a function already implemented in the tester. The BLE signaling functionality of the R&S CMW270 offers complex measurements and the wide variety of Bluetooth applications that have emerged as a result of the IoT.

In the announcement, the company explained: “Many manufacturers of Bluetooth LE components find it challenging to test modules and sensors in compliance with the standard. The Bluetooth Low Energy (LE) test specifications, when drafted in 2010 by the Bluetooth SIG, featured a direct test mode via a control line, but did not specify an over the air (OTA) signalling test mode. Many small Bluetooth LE devices have no port or interface to which a control line can be connected.”

To overcome this problem, Rohde & Schwarz upgraded its CMW270 wireless connectivity tester to enable over-the-air (OTA) tests on Bluetooth LE devices.


The solution uses OTA measurements to verify the RF properties and performance of BLE devices in operating mode. This helps to determine the DUT’s signal level, modulation and receiver sensitivity, among other parameters.

The tester offers 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 R&S CMW270 is also suitable for tests during development and for preconformance tests in preparation for Bluetooth SIG qualification.

The company noted that the tester now offers complex Bluetooth, WLAN and ZigBee tests in a single box. It features a parametric test concept that allows application-specific test sequences to be created.

The tester‘s bandwidth has been extended to 160 MHz, enabling WLAN RF tests covering the IEEE 802.11a/b/g/n/ac and 802.11ax standards, as well as RF tests for ZigBee components used in smart home environments.

The signaling test function for Bluetooth LE will be available from Rohde & Schwarz in the first half of 2018.

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