Clock Recovery Unit
CR6256
56Gbaud Clock Recovery Unit
Semight Instruments CR6256 is a compact, cost-effective desktop high-speed signal clock recovery unit, which supports to derive a clock from either non-return-to-zero (NRZ) or pulse amplitude modulation 4-level (PAM4) signals and is very suitable for measurement of various high-speed communication standard rate optical transmitters.
Features
Wide range of rates
Support clock extraction from NRZ / PAM4 signal at 49.7664~56 Gbaud or 24.8832~32.5 GbaudA wide range of applications
IEEE802.3 Ethernet, Fibre Channel and OIF standard specifications for TDECQ indicatorsEasy to use
Built-in touch screen display and control, all functions of clock recovery can be realized without external computerHigh sensitivity
It is very beneficial to the application scenario of silicon photonics under low optical powerEasy to use
Can be used with other sampling oscilloscopes in the industry, with built-in touch screen display and controlFlexible configuration
Single and multi-mode integrationMultiple frequency output
Support 1/2, 1/4 @ 53.125 GbaudExcellent performance
Fast locking,Features and Benefits
High sensitivity
-14 dBm @ 26.5625Gbaud/ -12 dBm @ 53 Gbaud (PRBS15, TDECQ=2.0dB) is very beneficial to the application scenario of silicon photonics under low optical power;High sensitivity
Effect of input power on TDECQ of 53Gbaud PAM4 signal
Optical modules with built-in digital DSP CDR must use Clock Recovery Unit to extract the clock
Real-time monitoring of input power
LCD screen displays real-time input optical power, monitoring link status at any timeClock recovery rate range | 24.8832 ~ 32.5 Gbaud; 49.7664 ~ 56 Gbaud; |
Support modulation type |
NRZ/PAM4 |
Optical interface | FC/UPC |
Electrical interface | 2.92 mm female, 50 Ω |
Input optical signal power range | -14 ~ 3 dBm |
Receiver sensitivity | -12 dBm @ 53.125 Gbaud PAM4; -14 dBm @ 26.5625 Gbaud PAM4; |
Input wavelength range | 850~1650nm |
Optical interface return loss | <-23 dB |
Recovery clock divider ratio |
1/2,1/4 @ 53.125 Gbaud; 1/1,1/2 @ 26.5625 Gbaud; |
Clock output amplitude |
300 mV |
Random jitter of recovered clock |
290 fs |
Characteristic impedance of clock output port | 50 Ω |
Loop filter bandwidth | 4 MHz |
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