How can I mount an optical head in an instrumentation rack?

The Keysight 8162xA/B optical heads have a different shape than most pieces of instrumentation. However, they can still be mounted in a rack.

To mount two (2) 8162x optical heads side by side next to an 8163A optical multimeter, please order the 81624RM, which mounts two optical heads on a half-rack tray next to the 8163A optical multimeter. The tray height is 3.5 inches.

To mount four (4) 8162x optical heads side by side, please order the 81625RM, which mounts four optical heads on a full width rack tray. The tray height is 3.5 inches.