DFPS Backplane (A3044)

© 2022 Kevan Hashemi, Open Source Instruments Inc.

Contents

Description
Versions
Design
Development

Description

[02-MAY-22] The Direct Fiber Positioning System (DFPS) Backplane (A3044) consists of a long, rigid circuit board into which we plug multiple service boards, such as the DFPS Base and Service Board (A3043).


Figure: Three 4×4 Positioner Cells On Bridge with Frame. The frame bolts to our motorized, two-axis gimbal. The backplane sits below the bridge and receives a service board, which is here shown before plugging into the backplane.

The service boards in turn receive the controllers for the positioners in the cell. The base board and service board are one assembly connected by flex cables. The backplane proviodes power and logic control signals to all its cells.


Figure: The Test Stand One Backplane.

The Test Stand one backplane will provide three connectors for service boards, as well as connectors that deliver ±250 V to the system for electrode drive, 2.4 V and 1.2 V for logic and conversion, and SDO and SDI for communication with the fiber controllers.

Versions

The following versions of the DFPS Backplane (A3044) are defined.

Version Service Board Geometry Comment
A A3043 3 × 1 with 20-mm spacing Backplane for 4×4 cells.
Table: Versions of the DFPS Backplane (A3044).

Design

Test Stand One: Drawings of three 4×4 cells on a frame mounted to on a two-axis gimbal.

Development

[18-JUL-22] We have the bridge plate mounted on our Test Stand One, ready for the backplane.