V

The Tektronix Type V is a video plug-in for 500-series scopes. It never went into full production.

Tektronix Type V
Video plug-in Tek Type V Compatible with 500-series scopes Produced from (never) to Manuals n/a (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

Larry Biggs was the project leader. Ron Olson did the dual-trace vertical. Phil Crosby did the sync, D.C. restorer, and line selector. The design was started in late 1959. The plan was to have a plug-in that could functionally replace the 524.

See https://vintagetek.org/television-products/ about a third of the way down is a blurb about the V unit.

Although the V unit never made it to market, Ron Olsen ended up using much of the dual-trace vertical design in the 1A1.