05 | Keysight | Electrical and Optical Clock Data Recovery Solutions - Data Sheet

N1077A Optical/Electrical Clock Recovery - Option SMS

The N1077A provides instrument-grade clock recovery on electrical and optical signals from

50 MBaud up to 32 GBaud (32.8 GBaud characteristic). Option SMS integrates an optical

splitter, hybrid coupler, and amplified O/E to minimize external cabling and losses, while

maximizing flexibility and ease-of-use. Just like the N1076A, the N1077A is controlled via a USB

connection to an 86100D DCA-X mainframe, or to a standalone PC running N1010A FlexDCA

software.

Figure 7. As this block diagram shows, the N1077A with Option SMS combines an integrated optical deck

(a splitter, bulk-optics coupler, and an amplified O/E) with an instrument-grade electrical clock recovery

circuit.

Figure 6. The N1077A recovers clock from both electrical and 850 to 1550 nm optical signals operating

from 50 MBaud to 32 GBaud.

Accurate, convenient solution for recovering clock signals from high-speed optical

communication signals

– Recovers clock from data streams up to 32 GBaud (Option 232) and 16 GBaud

(Option 216)

– Supports both NRZ and PAM4 signal types

– Provides an easy method for using the electrical clock recovery solution with optical

signals

– Integrated splitter/coupler extracts a portion of the optical test signal using a built-in

coupler. Main optical signal returned to the front panel

– Converts the tapped optical signal to an electrical signal using an amplified O/E for

greater sensitivity

– Operates with both multimode and single-mode optical signals

Optical OUT

(50 μm/125 μm)

Optical IN

(50 μm/125 μm)

Optical IN

(9 μm/125 μm)

Optical IOUT

(9 μm/125 μm)

Optical deck

(Option SMS)

Electrical clock recovery

(refer to N1076A block diagram)

Amp O/E

Hybrid coupler

70%

30%

70/30

50/50

SM splitter

Electrical Data

Electrical

Data IN

+

–

Recovered

clock output

Auxiliary clock

output (4 to 8 GHz)

Electrical clock recovery

block diagram

Loop bandwidth

adjustment

Ultra-low

jitter clock

Amp

VIG

(VCO)

Amp

Sum

Phase

detector

Frequency

divider

Front panel

divider

Peaking

adjustment

Step

generator

ADC (for jitter

spectrum

analysis, JSA)

Limit

amp