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数字传输系统(DTS)测试引导文件(KDB 558074)变更

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扫一扫!数字传输系统(DTS)测试引导文件(KDB 558074)变更扫一扫!
人气:-颁发时间:2016-05-25 09:19【

FCC20164月发布了新的数字传输系统(DTS)测试引导文件KDB 558074 D01 DTS Meas Guidance v03r05,替代旧版KDB 558074 D01 DTS Meas Guidance v03r04

新旧版本的差异:

KDB550874-v030r04

KDB550874-v030r05

不同点

2.0章节

The maximum peak conducted output power is defined as the maximum power level measured with a peak detector using a filter with width and shape of which is sufficient to accept the signal bandwidth.However, when a filter with adequate width is not available, an integrated method utilizing a peak detector is acceptable.

新版本删除积分法测试The maximum peak conducted output power

The procedures provided herein for measuring the maximum conducted (average) output power assume the use of the occupied bandwidth (OBW) as the reference for power integration. See ANSI C63.10 for guidance pertaining to measuring the OBW. Either of the two methods specified in C63.10 are acceptable, but the methodology for measuring the 99% OBW is the most accurate for noise-like emissions and thus represents the preferred method.

新版本特别提及99%OBW更为精准

9.0章节

The maximum peak conducted output power may be measured using a broadband peak RF power meter. The power meter shall have a video bandwidth that is greater than or equal to the DTS bandwidth and shall utilize a fast-responding diode detector.

新版本删除power meter 说明

Change Notice

04/08/2016: 558074 D01 DTS Meas Guidance v03r04 changed to 558074 D01 DTS Meas Guidance v03r05Updated to note 

<span background:yellow;"="" style="font-size: 15px">the new rules for devices operating in 5725 – 5850 MHz band and to implement editorial changes made apparent through KDB inquiries, to include the deletion of a statement regarding the use of integration peak power measurement procedures that was rendered obsolete by previous changes implemented on 06/06/2014.

KDB中新版本的变化,总的来说在测试或者报告中根本上没什么变化,报告中更行版本号即可!即,第2.0章节中描述最大传导功率(The maximum peak conducted output power)删除旧版特别提及的无法满足peak detector,则可以用积分法替代。

2.0章节中提供最大传导功率average power需要计算其OBW,新版本中提议用99%OBW来计算更为精确。

9.0章节旧版特别说明power meter使用条件必须为meter 的视频带宽大于等于DTS 设备的带宽,而已要求meter响应速度越快越好,新版本已删除这特别说明。


科普:KDB 558074是什么?

KDB 558074FCC15.247法规下定义的数字传输系统(DTS)的测试方法引导文件,它适用于劳动在902-928 MHz2400-2483.5 MHz5725-5850 MHz的数字传输系统,不适用于跳频系统。

科普:KDB 558074引导什么内涵?       

KDB 558074标准了以下测试项的测试方法:

No.

Description

FCC Part No.

1

Output Power

15.247(b)

2

DTS Bandwidth

15.247(a)

3

Conducted Spurious Emission

15.247(d)

4

Radiated Spurious Emission

15.247(d)

5

Band Edge

15.247(d)

6

Power spectral density (PSD)

15.247(e)

 原文转自:BALUN原创  编辑:郑木义

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此文关键字: FCC|DTS|KDB

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