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The Agilent 83485B Optical/electrical plug-in module for 83480A digital communications analyzer, incorporates a 30 GHz optical measurement channel and a 40 GHz electrical channel. The electrical channel also has a reduced-bandwidth setting of 18 GHz for improved noise performance. The optical channel is calibrated at 1310 nm and 1550 nm to provide both accurate display of the received optical waveform in optical power units and measurement of the signal's average power. In addition, the User Cal feature provides for consistent accuracy at any wavelength between 1200 nm and 1600 nm using a source and power meter. Switchable SDH/SONET filter for transceiver performance testing. Option 040, Fourth-order Filter Response for STM-64/0C-192. Option 050, Fifth-order Filter Response for STM-64/0C-192
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