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400G / 800G electrical receiver conformance testing requires the application of a stressed signal, simulating the worst-case scenario from a compliant transmitter and channel. The receiver must effectively equalize and capture the signal, ensuring a bit error ratio below specified limits. Complicating the process for 100 Gb/s link receivers are the lower noise thresholds of 56 Gbaud PAM4 signals and forward error correction (FEC), which require additional tuning and testing. IEEE 802.3ck and OIF-CEI-5.0 define conformance testing standards for 100 Gb/s receivers used in 400G and 800G Ethernet networks.
Electrical receiver conformance testing begins with precise calibration of the stressed signal and system. Performance validation includes interference tolerance and jitter tolerance tests, ensuring 400G / 800G receiver conformance for all possible deployment scenarios. Chip-to-module interface testing uses the stressed-eye method, with separate calibrations for host and module inputs. For chip-to-chip, backplane, or cable interfaces, the conformance test involves tuning the link channel operating margin by means of broadband noise injection. The test setup requires a bit error ratio tester (BERT) with PAM4 pattern generation and a high-bandwidth, low-noise oscilloscope to calibrate the receiver and stress signal.
How to Test 400G / 800G Electrical Receiver Conformance
Keysight M8050A 高效能誤碼率測試儀(BERT)可準確地分析下一代資料中心網路和伺服器介面所使用的接收器的特性。 Keysight M8050A 靈活的架構,提供無與倫比的信號完整性、NRZ、PAM4、PAM6 和 PAM8 信號支援,以及高達 120 GBd 的資料傳輸速率,可支援 1.6T 路徑搜尋以及其他尖端技術。
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How to Test 400G / 800G Electrical Receiver Conformance
70 GHz,雙通道 Infiniium UXR 系列即時示波器
頻寬 | 70 GHz |
最大的記憶體深度 | 2 Gpts |
最大的取樣率 | 256 GSa/s |
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How to Test 400G / 800G Electrical Receiver Conformance
OIF Receiver Test Application for CEI-112G-VSR,-MR and -LR PAM4 interfaces
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How to Test 400G / 800G Electrical Receiver Conformance
適用於 9000/S 系列的抖動、垂直雜訊分析軟體
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相符性測試應用軟體 | Ethernet |
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How to Test 400G / 800G Electrical Receiver Conformance
M8091CKCA 電子接收器符合性測試應用軟體旨在協助並簡化壓力信號校驗,以便利用 Keysight M8040A 64Gbaud 高效能 BERT 或 M8050A 120Gbd 高效能 BERT 與是德科技數位通訊分析儀(DCA)示波器,測試 IEEE 802.3ck Draft 3.3 晶片對晶片(C2C)和晶片對模組(C2M)電子介面的輸入。
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主要特色 | Automated stress signal calibration |
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How to Test 400G / 800G Electrical Receiver Conformance
Pulse Amplitude Modulation PAM-N Analysis Software
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