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The Agilent 83485A is an optical/electrical plug-in module for 83480A and 86100A digital communications analyzer, incorporates two measurement channels, one optical and one electrical. Each channel has two selectable bandwidth settings. In the lower bandwidth modes of 12.4 GHz, oscilloscope noise performance is excellent, while the 20 GHz mode allows greater fidelity for high speed signals. 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 compliance testing. Option 030, STM-1/0C-3. Option 032, STM-4/0C -12, Option 034, STM-16/0C-48
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