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Agilent 8156A Option 121

The Agilent/HP 8156A Attenuator option 121 is a high performance 9µm singlemode attenuator offering a 60dB attenuation range and is equipped with HPIB (GPIB) control. The 8156A can be programmed to perform automatic up and down attenuation sweeps. When properly calibrated, the 8156A attenuation is automatically corrected for the entered wavelength. Option 121 is a monitor output. The HP Agilent 8156A opt.121 offers return loss better than 45dB and a typical insertion loss of 3.3dB. The 8156A-121 typical accuracy is ± 0.05dB.

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Agilent HP 8156A Optical Attenuator mainframe (non-modular) with Option 121.

Specifications at a glance for the Agilent 8156A Opt 121:

  • Wavelength Range: 1200 to 1650 nm
  • Attenuation Range: 60 dB (excluding insertion loss)
  • Fiber Type: 9/125 µm single-mode
  • Connector Type: Straight contact
  • Return loss: >45dB
  • Attenuation Accuracy (linearity) Typical: <±0.1dB
  • Resolution: 0.001 dB
  • Maximum Input Level: 23dB

List of possible options for the 8156A:

  • Option 100: Standard Performance Version
  • Option 101: High Performance Version
  • Option 121: High Performance Version, Monitor Output
  • Option 201: High Performance, High Return Loss Version
  • Option 221: High Performance, High Return Loss Version, Monitor Output

Additional Information

Three connectors interfaces are required for each Agilent 8156A. Each connector is sold separately.

Specification DataSheet


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