Pye CCU type 842309N for Mk3 Television Camera

CCU Front view, the two large knobs control Lift (black level) and Gain.
The meter indicates the Iris setting which is operated by the keyswitch, above right of the meter.
There are a large number of controls down the left side and more under a panel in the top panel above the picture tube.

CCU Rear view, connectors:-

BICC Mk3 camera cable connector in centre,

4 square connectors, sync in/out, to mixer & PSU (by Magnetic Devices Ltd.)

2 SO259 video output connectors

Bottom right, an EP8 for remote control.