**5.2 Throughput measurement**

The throughput standard is widely adopted in different applications like video stream, online game, video conference. For example, you may need 1Mbps or more for YouTube HD video. Throughput is the most common for user experience regarding wireless RF performance, therefore throughput test need to consider how the user interacts with the RF device. For example, 90dB path loss for laptop 802.11g WLAN may represent that AP is 200 meters away in the free space environment, however the hand and head may cause the range for 90dB path loss much less than 20 meters for smart phone VOIP application. Some real-life products throughput test result has been illustrated in Figure 12 and the Root Cause Analysis (RCA) procedure will be addressed later in section 6.
