GR5xx DTM Test Application Note
●This document introduces the test framework and test methods of Direct Test Mode (DTM) in Bluetooth Low Energy (Bluetooth LE) applications. It describes how to use a Bluetooth tester and DTMTool (an RF test tool) to test the radio frequency (RF) performances of GR5xx System-on-Chips (SoCs) and demonstrates a GR5xx DTM example, helping users quickly get started with secondary development.
■Introduction
●The Direct Test Mode (DTM) is a standard mechanism defined by Bluetooth Special Interest Group (Bluetooth SIG) to test the radio frequency (RF) performance of Bluetooth devices for all Bluetooth channels. In general, DTM is used in application validation and product line tests, enabling RF engineers to effortlessly verify and optimize Bluetooth RF performances. Tested RF factors include:
◆Transmission power and receiver sensitivity
◆Frequency offset and drift
◆Modulation characteristics
◆Packet error rate
●The DTM test on GR5xx System-on-Chips (SoCs) is based on UART physical interfaces and a Bluetooth tester. The Bluetooth tester controls GR5xx RF physical layer (PHY) by using Host Controller Interface commands (HCI CMD) to implement test procedures.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2023-03-30 |
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Version: 3.0 |
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2.7 MB |
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