Normaled Connections & Acrylic Panel

This post diverges from the core building blocks of the scan processor system and looks at some more frivolous nice-to-haves, such as normaled connections & cosmetics.

Connections to normal (think semi-modular)

Normal connections: switch connector normally connects input to ground.

For PJ30x jacks
Pin 1 is sleeve
Pin 2 is switch (input gnd, output nothing)
Pin 3 is tip

Connections to Pin #'s:
Multiplier Input: J3.2
Multiplier Out: J4.3
Processor Thru: J3.2
Processor Out: J4.3
H Ramp Out: J6.3 (page 1 = horizontal)
V Ramp Out: J2.3 (page 2 = vertical)

Video signal path:
C3 Luma --> C10A Input               Connect C3 J2.3 to C10A J3.2
C10A output --> C7A Thru           Connect C10A J4.3 to C7A J3.2
C7A Output --> CRT Z input

Ramp signal path:
C4 H Ramp out --> C10B Input    C4 J6.3 to C10B J3.2
C4 V Ramp out --> C10C Input    C4 J2.3 to C10C J3.2
C10B Output --> C10D Input       C10B J4.3 to C10D J3.2
C10C Output --> C10E Input       C10C …

A. Rutt-Etra Design

Much of my knowledge of scan-processors has come from word-of-mouth: Youtube, the video synth section on Muffwiggler, and the Video Circuits and LZX Video Synth Community Facebook pages. Therefore, I have a patchwork understanding of the detailed workings of the Rutt-Etra scan processor, and will do my best to try to convey which ideas are most important.

One document on Bill Etra & Steve Rutt that is particularly interesting comes from Eigenwelt Der Apparate-Welt: Pioneers of Electronic Art, Ars Electronica, 1992, which can be found here. I believe that this is companion literature to an exhibition of "pioneers of electronic arts through presenting some of the tools and instruments of a particular period of activity"

The linked document contains background and technical information about the Rutt-Etra scan processor. A handy block diagram of the basic scan processor is reproduced below, which is the foundational design for this project:

Anyone familiar with the LZX line…

DIY LZX Cadet-based Rutt-Etra Scan Processor - Introduction

The purpose of these posts is to document the process of building a LZX Cadet-based Rutt-Etra style scan processor. The documentation process includes design references to the Rutt-Etra system, necessary "transformation" to the LZX world, sourcing DIY parts, building, testing, and results.

A. Rutt-Etra circuit design
B. LZX Cadet equivalent design
C. Sourcing parts for the LZX Cadet DIY build
D. Documentation of Cadet build process
E. Testing
F. Results