400G PAM4 Error Meter High-Speed Optical Transceiver Module Equipment
The 400G PAM4 error analyzer is a high-performance error analyzer designed to test PAM4 (four-level pulse amplitude modulation) signals at 400G rates. It can switch NRZ (non-returnto-zero code) and PAM4 code without any peripheral accessories, providing an effective guarantee for the automated production and testing of high-speed optical transceiver modules.
Main feature
High speed and high performance: The 400G PAM4 error meter supports transmission rates up to 400G, which can meet the test requirements of current and future high-speed communication systems. At the same time, its high-performance error analysis capability can ensure the accuracy and reliability of the test.
Multi-channel parallel testing: Some 400G PAM4 error detectors (such as BERTWaveE856F) support 8 channels in parallel, with a single channel up to 28.9GBd, greatly improving test efficiency.
Flexible code type selection: The 400G PAM4 error tester supports a variety of NRZ and PAM4 code types, including PRBS (pseudo-random binary sequence) series code types, user-defined code types, etc., to meet the needs of different test scenarios.
Adjustable output signal: the amplitude of the output signal can be adjusted, the polarity can be freely flipped, and it supports two test modes: timing and continuous, providing more flexibility and convenience for testing.
FEC support: Some 400G PAM4 error detectors (such as BERTWaveE856F) support KP4-RS (544, 514) FEC (forward error correction), which further improves test accuracy and reliability.
Technical parameter
| No. | Argument | MIN | Model | MAX | Unit |
| 1 | Signal coding mode | NRZ/PAM4 | |
| 2 | Data rate | 6.144 | 6.144,10.3125,20,25,25.78125,26.5625,28.05 | 28.05 | Gbps |
| 3 | Code pattern | PRBS7,PRBS9,PRBS11,PRBS13,PRBS15,PRBS16,PRBS23,PRBS31,USER PRBS13Q,SSPRQ,JP03A,JP03B. | |
| 4 | Rise-fall time(20% to 80%) | | 14 | 35 | pS |
| 5 | Pattern reversal | The signal at the receiving end is automatically reversed | |
| 6 | Signal output amplitude (single-ended) | 200 | 800 | 1000 | mV |
| 7 | 25G Data Output jitter (RMS) | | 500 | 700 | fs |
| 8 | Data input/output interface | Differential, AC coupling, 50 ohm impedance, female 2.92mm SMA | |
| 9 | Clock output | 0.2 | 6.64 | 13.28 | GHz |
| 10 | Data signal input sensitivity (single-ended) | | 50 | | mVpp |
| 11 | Data output eye map intersection NRZ | 49 | 50 | 52 | % |
| 12 | PAM4 Eye height (per eye height) | 80 | 110 | 200 | mV |
| 13 | Linearity of PAM eye map | 0.95 | 0.98 | 1 | |
| 14 | Operating temperature | 10 | 25 | 50 | °C |
The 400G PAM4 error meter is widely used in the development and production of optical transceiver modules (such as QSFP-DD/OSFP/QSFP28/CFPx/CXP), especially in the testing of parallel 400G products. In addition, it can also be used in the development and production of optical devices/subsystems, incoming quality inspection and production of system equipment suppliers, installation and troubleshooting of system equipment, and performance verification of cable assemblies.
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