Clock Recovery Unit
CR6256
56GBaud Clock Recovery Unit
Semight CR6256 is a compact, cost-effective and efficient benchtop 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 24.33-56.25 GBaud. 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
Excellent Performance
Fast locking speed under auto/semi-auto mode
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
More Application
CR6256 can be used with other sampling oscilloscopes in the industryFunctions and Advantages
High Sensitivity
-12 dBm @ 26.5625 GBaud
Application
Optical transceiver with built-in DSP/CDR requires the use of a clock recovery unit. (4x56 GBaud or 8x56 GBaud 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
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