83496B Optical/electrical clock recovery mod. with Phase Noise Ana.

The Keysight 83469B is a clock recovery module which also offers the ability of performing Phase Noise analysis. The output clock of the Keysight 83469B has negligible residual jitter, which allows users to measure very low signal jitter levels with high accuracy. It can also be used for waveform analysis when used with the 86100C Digital Communications Analyzer.
The key specifications of the Keysight 83469B clock recovery module include:

For optical clock recovery (option 101 only):
Inputs & outputs:
9/125 micro meter (single-mode) to 62.5/125 micro meter (multimode)
Wavelength range:
1250-1650 nm (single-mode), 750-1330 nm (multimode)
Minimum optical modulation amplitude:
-11 dBm (1310/1550 single-mode), -10 dBm (1310 multimode), -8 dBm (850 multimode)
For electrical clock recovery:
Inputs:
single-ended or differential, 3.5 mm (m) connectors
Outputs (option 100 only):
single-ended or differential, 3.5 mm (m) connectors
Minimum electrical input level:
75 mVpp
Continuous unbanded tuning from 50 Mb/s up to 13.5 Gb/s
Golden PLL operation (option 300) with a tunable loop bandwidth from 15 KHz to 10 MHz
Ultra low residual jitter:
< 300 fs rms (characteristic at 10 Gb/s) High gain for tracking spread-spectrum signals Phase noise analysis of clock or data signals