A prototype design for microprocessor based digital telemetry transmitter for low frequency data
A prototype microprocessor based digital transmitter with low power requirements has been designed and built for use in dial-up telemetry applications. The processor used is the 8 bit RCA COSMAC. Input data is an analog signal in the range of -5 volts to +5 volts which is digitized to 12-bit precision. The transmitted data is a serialized and encoded frequency-shift-keyed signal suitable for transmission over phone lines or radio. Over 500 16-bit words can be stored in the data buffer for transmission with expansion up to 8k words possible. Average power consumption is less than 100 ma at 5 volts.
Citation Information
Publication Year | 1978 |
---|---|
Title | A prototype design for microprocessor based digital telemetry transmitter for low frequency data |
DOI | 10.3133/ofr78674 |
Authors | J. Roger, R. Cutler, M. Varon |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 78-674 |
Index ID | ofr78674 |
Record Source | USGS Publications Warehouse |