A PROGRAMMABLE-SIGNAL CONDITIONING PULSE CODE MODULATED TELEMETRY ENCODER

Abstract

The development of variable format airborne PCM data acquisition systems has generally been predicated upon advances in the field of solid state memory device technology. The introduction of Electrically Eraseable Programmable Read Only Memory (EEPROM) devices has generated renewed interest in the design of fully programmable PCM encoders. This paper will describe the evolution of one such micro-miniature PCM encoder system incorporating the following features: ∙ Complete Frame Format Program Capability ∙ Software Controlled Single Ended/Differential Input Program Capability ∙ Individual Sample - Gain/Offset Scaling Capability ∙ Hard Wire Program/Erase/Program Capability ∙ Variable Word Resolution ∙ Small Size