Agilent / Keysight 83446B Lightwave clock/data receiver 622 Mb/s

The Agilent/Keysight 83446B is a lightwave clock/data receiver that recovers clock and data signals from optical input at 622.08 Mb/s (OC-12/STM-4) data rates. Built around a high-gain avalanche photodiode, gain-controlled amplifier, and clock/data recovery hybrid, the instrument delivers clean, error-free outputs across a wide dynamic range of optical power levels. It operates at 1310 nm and 1550 nm wavelengths per ITU-T G.957, G.958, and Bellcore GR-253-CORE standards.

Technical Specifications

Data Rate: 622.08 Mb/s (OC-12/STM-4); optional configurations from 425 Mb/s to 3 Gb/s Wavelength Operation: 1310 nm and 1550 nm across ITU-T and Bellcore standardized ranges Optical Input:

• Sensitivity: -27 dBm minimum (0°C to 55°C)


• Minimum power for clock/data recovery: -28 dBm


• Minimum power for auxiliary output: >-24 dBm (AGC stabilized)


• Maximum operating input: -9 dBm minimum


• Maximum safe input power: +10 dBm


• Optical return loss: 27 dB


• Fiber core diameter: 50 µm (single-mode or multimode compatible)


• Standard FC/PC connector interface (Option 010 deletes connector) Signal Recovery:


• Recovers clock and data from optical input


• Recovers clock and data from electrical auxiliary input


• Optimized for integration with BERTs (71604B, 71603B, 86130A)


• Compatible with sampling oscilloscope eye diagram analysis; recovered clock triggers scope Electrical Outputs:


• Data Out: 0.5 V pk-pk, non-inverting


• Clock Out: 0.5 V pk-pk, non-inverting


• Output return loss: 12 dB @ 1 GHz, 9 dB @ 2 GHz, 6 dB @ 2.5 GHz


• Clock edges aligned with data transitions to ±0.25 unit interval Jitter: RMS jitter on clock/data outputs: 5 degrees Auxiliary Output:


• Bandwidth: 0.1 to 1500 MHz


• Output level: 0.5 V pk-pk for >-24 dBm input; 0.25 V pk-pk for >-27 dBm input (AGC stabilized)


• Provides analog monitoring for diagnostic analysis Electrical Clock Recovery Input: 200 mV pk-pk sensitivity; 2 V pk-pk maximum safe input Performance: Bit error ratio better than 1E-10 with 2^23-1 PRBS pattern, 50% mark density

Key Features

• High-sensitivity optical reception with wide dynamic range


• Low jitter clock/data recovery (5 degrees RMS)


• Dual-wavelength operation (1310/1550 nm)


• AGC-stabilized auxiliary output for signal monitoring


• Electrical clock recovery input for flexible triggering

Typical Applications

• OC-12/STM-4 optical system characterization


• BER testing and measurement


• Optical eye diagram analysis


• System acceptance testing in telecommunications and datacom environments

Compatibility & Integration Designed for use with Agilent/Keysight BERT instruments and sampling oscilloscopes. Agilent 81000xI Series optical interface connectors sold separately.