Agilent / HP / Keysight 83485B

This Optical Electrical Plug In has two measurement channels, one optical, the second electrical.

Both channels have selectable bandwidth settings for selecting between lowest oscilloscope noise and highest bandwidth (over 30GHz) for greater measurement fidelity on high-speed signals.

The integrated optical channel eliminates distortion caused by cables and connectors associated with the use of external receivers in order to accurately characterize optical waveforms.

The optical channels are calibrated at 1310nm and 1550 nm to provide both a built-in power meter and accurate display of the received optical waveform in microwatts.

The electrical channel may be used to perform measurements on tributary signals, transmitter modulation signals, to evaluate receiver performance in transceiver testing, for measurements with an external optical receiver, or for general purpose measurements.