Third-party reference photo of a legacy HP-branded 83485B, corresponding to the catalog Agilent 83485B model. Background removed with an alpha-only manual mask. Pictured caps, connectors, configuration, and condition do not establish the offered unit.
Official 83485A front-panel drawing with historical HP branding, from the manufacturer manual. This reference does not establish installed options or actual used-unit appearance.
Official Keysight U2049XA Option 100 reference photograph from the manufacturer data sheet. Thermal-vacuum option and offered-unit configuration are unverified.
Third-party reference photo of the exact Agilent 81625B. Pictured options, cosmetic condition, and accessories do not establish the configuration or contents of the offered unit.