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| Categories | Optic Fiber Tester | 
|---|---|
| Brand Name: | YOUCII | 
| Model Number: | U9720B | 
| Certification: | CU,IOS | 
| Place of Origin: | China | 
| MOQ: | 1pcs | 
| Price: | negotiate a price | 
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram,T/T | 
| Supply Ability: | 7 pcs+per month | 
| Delivery Time: | 20 work days | 
| Packaging Details: | Carton | 
| Wavelength range (single mode): | 1250~1650 nm | 
| Optical input range: | -15~+5 dBm | 
| CML clock differential output amplitude: | 200~800 mVpp | 
| Operating temperature: | 10~70 ℃ | 
| Company Info. | 
| Guangzhou UC Instruments., Co. Ltd. | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
32Gbaud PAM4 CDR Support For NRZ And PAM4 Signals Clock Recovery Module
Product overview
A clock recovery device can receive an input data (or clock)
signal, lock it using a phase-locked loop (PLL) circuit, and output
a recovery clock. The recovered clock can be used as the time
reference of the oscilloscope or BERT. When the sampling
oscilloscope tests the optical eye pattern and waveform, the
crossover clock with the same origin as the measured signal is
needed to trigger. CDR (Clock recovery) module is mainly used for
sampling oscilloscope test optical eye map, but does not provide a
trigger clock test environment, the typical application is the test
of optical network equipment, because the measured device itself
does not have a frequency division clock output, in the test of
optical eye map need to recover the clock signal for triggering the
sampling oscilloscope.
U9720B CDR with an FC optical interface adapter, suitable for
conventional SFP28/56, SR, LR and BIDI and other modules of optical
signal access, support NRZ and PAM4 signals, FC optical interface
to receive optical signals into electrical signals, CDR then
extract the signal clock and output. The clock signal is mainly
used as the trigger signal of the oscilloscope.
Main parameters of CDR:
1) Clock recovery range: 25~ 32 Gbps(GBaud);
2) Support both NRZ and PAM4 signals;
3) Wavelength range: support single mode 1250~1650 nm;
4) Optical input range: +5 ~ -15dBm;
5) Clock output frequency division ratio: 2/8/32/40;
6) Output electrical clock amplitude: AC Couple/ 200~800mVpp;
7) Spectral ratio (can be selected according to the user) : 10%
(CDR) -90% (Output);
8) Support clock recovery of single-mode optical signals;
9) Optical interface type: FC/PC optical interface;
10) Electrical interface type: 40GHz 2.92mm Female;
Specification
| NO. | Technical index | Max | Min | Unit | 
| 1 | Data rate range | 32 | 25 | Gbps/Gbaud | 
| 2 | Wavelength range (single mode) | 1650 | 1250 | nm | 
| 3 | Optical input range | +5 | -15 | dBm | 
| 4 | Clock recovery output frequency division ratio | 2 / 8 / 32 / 40 | ||
| 5 | Output electrical clock amplitude | 500 (typical value) | mVpp | |
| 6 | CML clock differential output amplitude | 800 | 200 | mVpp | 
| 7 | The clock output jitter randomly | 800 | 300 | fs | 
| 8 | Clock frequency (28.1Gbps as an example) | 14.05 | 0.70 | GHz | 
| 9 | Internal Signal Loss Detection (LOS) | 128 (overload) | 5 (Sensitivity) | mV | 
| 10 | Power supply voltage (external power input voltage) | 5.5 | 4 | V | 
| 11 | Operating temperature | 70 | 10 | ℃ | 
| 12 | Adaptive module type (supports NRZ and PAM4 signals) | SFP28/56,SR,LR,BIDI | ||

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