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Clock Recovery Unit

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

    Support NRZ / PAM4 signal clock extraction at 24.33~56.25Gbaud
  • Flexible Configuration

    Single-Mode and Multi-Mode in one unit
    Support 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 for 100G/200G/400G/800G and 25G/50G PON optical transceivers testing
  • 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

    Support 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

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Details
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