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更多>>Abracon時鐘振蕩器是5G無線模塊的解決方案ASA-26.000MHZ-L-T
來源：http://www.jngps.cn 作者：bius 2022年10月19
Abracon時鐘振蕩器是5G無線模塊的解決方案ASA-26.000MHZ-L-T，IEEE 1588 provides precise synchronization of clocks in a packet-based network system and is
the backbone of 5G synchronization. IEEE 1588 is a Precision Timing Protocol (PTP) that enables
heterogeneous systems of which include clocks of various inherent precision, resolution, and stability
that synchronizes to a grandmaster clock. The protocol supports system-wide synchronization accuracy
in the sub-microsecond range with minimal network and local clock computing resources.
The PTP can react to clocking disruptions on the network, like losing a master clock. Within the standard
is a ranking algorithm that chooses the highest-ranking timing packet when a synchronization error is
invoked in the network. This warrants special attention to the reference oscillators employed at each
stage of the network.
One of the most challenging aspects of 5G’s implementation will be the numerous RRUs that are needed
to compete with the current 4G coverage. The plethora of RRUs is necessary for the easily obstructable
millimeter waves. These units will be installed at light posts, roadways, intersections, roof tops, etc. This
densification of RRUs lends itself to varying environmental conditions that may have not been a concern
before and may pose a threat to the stringent timing requirements of 5G.
IEEE 1588在基于分組的網(wǎng)絡(luò)系統(tǒng)中提供精確的時鐘同步5G同步的主干。IEEE 1588是一種精確定時協(xié)議(PTP)異構(gòu)系統(tǒng)包括各種固有精度、分辨率和穩(wěn)定性的時鐘它與特級大師時鐘同步。石英晶振成了最為適合5G的元器件，該協(xié)議支持全系統(tǒng)的同步精度在亞微秒范圍內(nèi)，以最小的網(wǎng)絡(luò)和本地時鐘計算資源。
| Manufacturer Part Number | Manufacturer品牌 | Series | Type 類型 | Frequency 頻率 | Voltage - Supply電壓 | Operating Temperature 工作溫度 |
| ASE-48.000MHZ-ET | Abracon晶振 | ASE | XO (Standard) | 48MHz | 3.3V | -20°C ~ 70°C |
| ASE-13.500MHZ-ET | Abracon晶振 | ASE | XO (Standard) | 13.5MHz | 3.3V | -20°C ~ 70°C |
| ASE-25.000MHZ-ET | Abracon晶振 | ASE | XO (Standard) | 25MHz | 3.3V | -20°C ~ 70°C |
| ASE-40.000MHZ-ET | Abracon晶振 | ASE晶振 | XO (Standard) | 40MHz | 3.3V | -20°C ~ 70°C |
| ASE2-50.000MHZ-ET | Abracon晶振 | ASE2 | XO (Standard) | 50MHz | 2.5V | -20°C ~ 70°C |
| ASE2-30.000MHZ-ET | Abracon晶振 | ASE2 | XO (Standard) | 30MHz | 2.5V | -20°C ~ 70°C |
| ASE2-25.000MHZ-ET | Abracon晶振 | ASE2 | XO (Standard) | 25MHz | 2.5V | -20°C ~ 70°C |
| ASA-16.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 16MHz | 3.3V | -40°C ~ 85°C |
| ASA-26.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 26MHz | 3.3V | -40°C ~ 85°C |
| ASA-12.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 12MHz | 3.3V | -40°C ~ 85°C |
| ASA-40.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 40MHz | 3.3V | -40°C ~ 85°C |
| ASA-60.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 60MHz | 3.3V | -40°C ~ 85°C |
| ASA-19.200MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 19.2MHz | 3.3V | -40°C ~ 85°C |
| ASA-20.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 20MHz | 3.3V | -40°C ~ 85°C |
| ASA-22.000MHZ-L-T | Abracon晶振 | ASA | XO (Standard) | 22MHz | 3.3V | -40°C ~ 85°C |
Abracon時鐘振蕩器是5G無線模塊的解決方案ASA-26.000MHZ-L-T，PTP可以對網(wǎng)絡(luò)上的時鐘中斷做出反應(yīng)，比如丟失一個主時鐘。在標準當同步錯誤發(fā)生時，是否有選擇排名最高的定時包的排序算法在網(wǎng)絡(luò)中調(diào)用。這就需要特別注意每一處所使用的參考振蕩器，石英晶體振蕩器階段網(wǎng)絡(luò)。
5G實施最具挑戰(zhàn)性的方面之一將是所需的大量rru來與目前的4G網(wǎng)絡(luò)競爭。過多的RRUs對于容易阻礙的任務(wù)來說是必要的毫米波。Abracon晶振公司竭盡全力解決所遇到的問題，這些裝置將安裝在燈柱、道路、十字路口、屋頂?shù)忍帯＿@RRUs的致密化會影響到不同的環(huán)境條件，這可能不是一個值得關(guān)注的問題并可能對5G嚴格的時序要求構(gòu)成威脅。
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此文關(guān)鍵字： Abracon有源晶振
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