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Technical Paper

Design and Testing of an Electronic Extravehicular Mobility Unit (EMU) Cuff Checklist

1991-07-01
911529
The Electronic Cuff Checklist (ECC) is an electronic device to be strapped to the wrist of a space suit. The ECC consists of an electroluminescent flat panel display, control and data storage electronics, an RS232 serial data port and a battery. The device is an electronic replacement for the cuff checklist used during the Apollo, Skylab and Shuttle Extravehicular Activities (EVA's). The original cuff checklist consists of up to 25 double sided 7.6 by 17.7 cm (3 inch by 5 inch) pages held open with a spring and mounted on the astronaut's wrist with a device similar to an expandable watch band. The principal advantages of the electronic device are: 1) it can store a larger amount of information than the manual checklist, up to 2000 pages of information with 1 megabyte of memory; and 2) the ECC can be reloaded with new information from an RS232 port on the ground before a shuttle launch or while on orbit such as for Space Station Freedom (SSF) applications.
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