Pulse Code Modulation Master Unit

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Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

This is an unflown Pulse Code Modulation Master Unit, part of the Space Shuttle avionics suite. The PCMMU combines signals from a variety of sources, both analog and digital, on the Shuttle, and translates them into a digital form that is a standard way to transmit or receive information.

NASA transferred this to the Smithsonian in 2016.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Manufacturer

Credit Line

Transferred from the National Aeronautics and Space Administration, Johnson Space Center

Materials

Case: black metal, probably aluminum

Dimensions

3-D: 48.3 × 17.1 × 17.8cm, 12.2kg (19 × 6 3/4 × 7 in., 27lb.)

Country of Origin

United States of America

Type

AVIONICS

Inventory Number

A20181381000