Keysight N7749C optical head interface manufacturer reference image shown connected to four optical heads and adapters. Actual used-unit configuration, heads, adapters and supplied accessories require confirmation.
Keysight 81624C optical power head manufacturer reference image shown connected to an N7749C interface. Interface, cable, installed options and accessories for the offered used unit require confirmation.
Keysight 81623C optical power head manufacturer reference image shown with its cable and connector. Actual used unit, installed options and supplied accessories may vary.
Keysight 81628C optical power head manufacturer reference image shown with an 81000FA adapter. Cable continues beyond the original left image boundary. Actual used unit, installed options, adapters and supplied accessories require confirmation.
Official LTK-1-1 + FTB-3500 configured-kit reference, explicitly labeled in the English datasheet page 2. Shows an LTB-1 host running the variable attenuator application; it does not show the standalone module or establish that a host is included.
Legacy Hewlett-Packard 81657A reference for the Agilent 81657A model. Branding, connector presentation, and condition may differ from the offered unit.
Third-party reference photo of the exact Agilent 81663A. Background removed with an alpha-only manual mask. The pictured 1553.33 nm sticker is illustrative and does not establish the offered wavelength option.
