CR6256
56Gbaud Clock Recovery Unit
Semight CR6256 is a compact, cost-effective and efficient desktop high-speed signal clock recovery unit, which supports either Non-Return-to-Zero (NRZ) or Pulse Amplitude Modulation 4-level (PAM4) signals clock extraction at 24.33-56.25Gbaud. It is widely used in 400G/800G high-speed communication optical transceiver and Interface test and measurement.
Features
Wide Range
Supports NRZ / PAM4 signal clock extraction at 49.7664~56.25 GBaud /24.33024~28.9 GBaud
Flexible Configuration
Single-Mode and Multi-Mode in one unit
Supports both optical and electrical signal clock recovery (optional)
Excellent Performance
Fast locking speed under auto/semi-auto mode
Ultra Low random jitter
High Sensitivity
Very conducive to silicon photonic application with ultra-low input optical power
Wide Application
Complies with IEEE 802.3 Ethernet, PON, Fiber Channel, and OIF standards
Easy to Use
With either touch lcd screen or flexible remote-control solution, the CR6256 can work with sampling oscilloscopes easily and quickly
Multiple Frequency Output
Supports 1/2, 1/4, 1/8, 1/16
It can meet the trigger bandwidth requirements of various sampling oscilloscopes in the industry
More Application
CR6256 can be used with other sampling oscilloscopes in the industry
Features and Benefits
High Sensitivity
-12 dBm @ 26.5625Gbaud
-12 dBm @ 53.125 Gbaud PAM4/1310nm
-10 dBm @ 53.125Gbaud PAM4/850nm
Application
Optical transceiver with built-in DSP/CDR requires the use of a clock recovery unit. (4x56Gbaud or 8x56Gbaud PAM4)
Real-time Monitoring of Input Power
LCD screen displays real-time input optical power, as well as the signal lock status.
| Item | Description |
| Data Rate Input Range | 24.33024 ~ 28.9 Gbaud；
49.7664 ~ 56.25 Gbaud； |
| Modulation | NRZ/PAM4 |
| Optical Interface | FC/UPC |
| Electrical Interface | 2.92 mm female，50 Ω |
| Optical Input Power Range | -12 ~ +5 dBm |
| Optical Sensitivity | -10 dBm @ 53.125 Gbaud PAM4/850 nm；
-12 dBm @ 53.125 Gbaud PAM4/1310 nm； -12 dBm @ 26.5625 Gbaud PAM4； |
| Wavelength Range | 800 ~ 1650 nm |
| Factory Calibrated Wavelength[1] | 850/1310 ±10 nm |
| Recovery Clock Divide Ratio | 1/2，1/4，1/8，1/16 |
| Recovered Clock Amplitude | 300 mVpp |
| Recovered Clock Random Jitter | ≤230 fs |
| Clock Output Characteristic Impedance | 50 Ω |
| Loop Bandwidth | 4 MHz (typical) |
[1] ±10 nm refers to the Calibration Light Source wavelength error