QED Reference Ethernet Cable

長度 (M)



QED Reference Ethernet 運用了自家50年的音響研究經驗設計而成,用到德國 Telegärtner RJ45 插頭提供最準確、最穩定的傳送。非常適合高清音樂及影片串流播放,其頻寬最高能處理 32bit/384 kHz 和 DSD512 音樂檔案數據傳送。其 Ethernet 級別為 Cat.8.1 支援 40Gb/s 傳送,以高性能的表現,處理高清音頻信號,擁有足夠的空間來應對密集數據傳送。有效減少數字信號中的抖動或時基誤差可以使到音頻傳輸更清晰,應用於以太網之中也不例外。 Reference Ethernet 絕對是 QED 擁有 50 年設計和研究模擬和數碼音響線材經驗而成的一款發燒級網線。 Reference Ethernet Handles the highest of high-resolution audio - and beyond. Designed to provide the most accurate, most stable connection possible between networked devices. Perfect for connecting a high-resolution digital audio streamer to a local network, the Reference Ethernet has more than enough bandwidth to deal with the data rates required by 32 bit/384 kHz and DSD512 audio files. Painstakingly engineered, Reference Ethernet is a Class I Category 8.1 cable and can support 40G Ethernet - and so has the headroom to cope with even the most data-intensive applications Engineering pedigree QED has been designing and engineering superior analogue and digital cables for more than 50 years, and its new Reference Ethernet cable is informed by the results of the company’s exhaustive research into cable design since 1995.



Twisted Pairs QED Reference Ethernet 的兩絞設計可以大大降低通過電場或磁場耦合而引起的雜訊(noise)影響。兩條導線中,每條導線感應的電流幾乎相等。可減少傳送中訊號的衰減、減少串擾(crosstalk)並改善了對外部電磁干擾的抑制能力。

Insertion Loss 插入損耗(insertion loss)是指與引入線路的信號相比,線路遠端的信號強度損失。這種損耗是由於銅導體的電阻抗、通過線材絕緣層的能量損耗和連接器引起的阻抗造成的。為了保留最多的數據,Reference Ethernet 使用了鐵氧體浸漬的護套,並且使用鋁箔包裹,大大減低外部造成的干擾。使到Reference Ethernet 輕鬆超過了 CAT 8 插入損耗標準,保證最多的信號強度。

Attenuation-to-Crosstalk Ratio 為了將信號噪聲和串擾保持在絕對最低水平,Reference Ethernet 使用了 99.999% 的無氧銅雙絞線,令當中的衰減對串音比,比起 CAT 8 標準的要求高出 25 dB,反映出Reference Ethernet 擁有更大量可用的頻寬。

TDR (Time Domain Reflectometer) 任何不匹配的阻抗都會導致信號來回反射,造成回波損耗(return loss)。得益於Reference Ethernet 其精密的 Telegärtner 插頭和 360 度屏蔽壓鑄鋅主體,能夠有效將 90% 以上的信號傳輸,大大減低回波損耗造成的失真。

Key features at a glance

  • Specifically designed for high-resolution audio up to 32 bit/384 kHz or DSD512 quality
  • Complies with Class I Category 8.1 standard
  • Supports 40G Ethernet
  • Ferrite insulation, low-loss dielectric and gold-plated Telegärtner plugs combine to deliver
  • 99.999% OFC, 24 AWG conductors with customised twist rates for lower inter-pair crosstalk
  • Arrives in stylish White Pearl finish

Specified to perform

An uncompromised specification and state-of-the-art engineering results in a cable with a maximum data rate of 40 Gb/s. This is well in excess of what is required to handle even the most demanding data streams, and means Reference Ethernet is easily able to cope with the highest of today’s high-resolution digital audio files and is future-proofed to handle whatever comes next.

Minimising crosstalk and insertion loss

In order to keep signal noise and crosstalk to an absolute minimum, Reference Ethernet uses 99.999 % oxygen-free copper twisted-pairs - with a dissimilar twist rate for each pair - to maximise noise-rejection characteristics. For minimal ‘insertion loss’ - which is the reduction of signal strength at the end of the cable compared to that at the start - Reference Ethernet uses an aluminium mylar wrap, within a foil wrap, within a ferrite-impregnated jacket. As a result, the cable comfortably exceeds the CAT 8 insertion loss standard. This over-specified arrangement also means Reference Ethernet easily outperforms the CAT 8 standard for ‘attenuation-to-crosstalk ratio’ which is an indicator of the margin by which it avoids introducing any errors into the data stream.

Reducing return loss

Reference Ethernet also performs way beyond the CAT 8 requirements where ‘return loss’ is concerned. Any impedance mismatch between the cable and the equipment it’s connected to can cause the signal to be reflected back and forth. Thanks to its precision-engineered, gold-plated Telegärtner plugs with 360-degree shielded die-cast zinc bodies, reflections are minimised and all of the signal is delivered to the load. The cable is finished in a stylish pearl white PVC jacket to compliment any hi-fi set-up.

單位: 1條(1 Piece)
電纜外徑: 9 mm
插頭: Telegärtner Profinet CAT 8
建設: F / FTP
導體尺寸: 24 AWG
阻抗: 100 Ω
跳線類別: I 類 CAT 8.1
最大bit rate: 40 Gb/s
長度: 1m、2m