name: VBW
full_form: Video Bandwidth
context: shall be set to Power Control Algorithm 2. 4) Enter the UE into loopback test mode and start the loopback test. 5) The measurement receiver shall be set to: zero span, video trigger and RMS detector. The RBW shall be at least (1+ ï¡ï© times the chip rate of the radio access mode and the VBW at least 3 times bigger than the RBW. For 1.28Mcps TDD UE, the RBW shall be set to 3MHz, and VBW shall be set to 10MHz. See TS 34.108 [10] and TS 34.109 [11] for details regarding generic call setup procedure and loopback test.
description: Video Bandwidth (VBW) is a critical network attribute used in loopback testing, specifically in setting up the measurement receiver. It is related to the resolution bandwidth of the receiver and affects the accuracy of measurements.
explanation: The provided context from 3GPP TS 34.114 highlights VBW as a parameter that needs to be set to a specific value (at least 3 times bigger than the RBW) for loopback testing, indicating its role in network operation and measurement.
section_title: 5.4.4.1Initial conditions
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