A PCM primary synchronizing unit
Abstract
A study of a primary PCM telemetry synchronizer is presented. The basic principles of PCM are reviewed together with the various codes used. The modulated carrier spectrum and energy contents in a frequency band are discussed. Reception problems are detailed leading to the conception of a primary synchronizer executed in TTL and modified for CMOS circuits.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1974
- Bibcode:
- 1974STIN...7533157F
- Keywords:
-
- Pcm Telemetry;
- Pulse Code Modulation;
- Synchronism;
- Time Division Multiplexing;
- Electronic Equipment Tests;
- Electronic Modules;
- Integrated Circuits;
- Metal Oxide Semiconductors;
- Spacecraft Electronic Equipment;
- Space Communications, Spacecraft Communications, Command and Tracking