<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>R. Cutler</dc:contributor>
  <dc:contributor>M. Varon</dc:contributor>
  <dc:creator>J. Roger</dc:creator>
  <dc:date>1978</dc:date>
  <dc:description>&lt;p&gt;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.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/ofr78674</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>A prototype design for microprocessor based digital telemetry transmitter for low frequency data</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>