Bluetooth RF test methods and indicators Bluetooth wireless RF test In order to obtain the Bluetooth trademark, Bluetooth product manufacturers must submit their Bluetooth products to BQTF (Bluetooth certification test equipment) for testing, and send their test results and products to BQB (Bluetooth certification personnel) for review. Bluetooth certification is relatively complicated. Every time a Bluetooth certification is carried out, the applicant must pay a considerable fee to BQRB (Bluetooth Certification Evaluation Committee). Therefore, it is very necessary for Bluetooth product manufacturers to carry out Bluetooth pre-certification. Bluetooth testing includes compatibility testing and interoperability testing. Bluetooth wireless testing belongs to compatibility testing, which verifies whether the RF performance of Bluetooth products meets the Bluetooth RF specification. Many OEM manufacturers directly purchase Bluetooth chips or modules that have obtained Bluetooth certification, and then develop Bluetooth products such as mobile phones, personal digital assistants (PDAs), computers, printers, MP3 players, digital cameras, cars, toys, etc. Due to the needs of different types of products, it may be necessary to replace the antenna, or due to the influence of other wireless modules or clock modules, as well as changes in power supply, these will cause the RF performance of the Bluetooth final product to change. Therefore, the RF performance of the product must be tested during the R&D and production process to ensure that its wireless indicators meet the requirements of the Bluetooth RF specification. 1 Bluetooth wireless test methods and indicators The current version of the Bluetooth wireless test specification is version 0.91, which defines Bluetooth wireless test indicators and test methods. The Bluetooth wireless test configuration includes a tester and a device under test (EUT), where the tester is the master unit and the EUT is the slave unit. The two can be connected by a radio frequency cable or by an antenna through air transmission. The tester sends an LMP instruction to activate the EUT to enter the test mode and configure some parameters of the Bluetooth link between the tester and the EUT. For example, whether the test mode is loopback or transmission mode, whether frequency hopping is required, whether the packet is a single time slot packet or a multi-time slot packet, and whether the net number of the packet is PN9, 00001111, or 01010101. The test mode is a special state. For safety reasons, the EUT must first be set to the \"Enable\" state before it can be activated in the air to enter the test mode. The following introduces Bluetooth wireless indicators and test methods. 1.1 Sending a message...
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