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NomiGPS-TFS Time & Frequency Standard

NomiGPS-TFS Time & Frequency Standard. NomiGPS-TFS. This is a checklist of the tasks required to get the Garmin GPS 15L-F unit provided by Naomi working as a GPS indicator device and 1 PPS frequency standard for a GPS disciplined oscillator and time standard. Reference Documents.

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NomiGPS-TFS Time & Frequency Standard

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  1. NomiGPS-TFSTime & Frequency Standard

  2. NomiGPS-TFS • This is a checklist of the tasks required to get the Garmin GPS 15L-F unit provided by Naomi working as a GPS indicator device and 1 PPS frequency standard for a GPS disciplined oscillator and time standard.

  3. Reference Documents • Garmin GPS 15L-F web • Garmin Technical Manual localweb

  4. Tasks – Make or Buy • GPS Antenna • Power Supply • Connector Cable. • Mounting Arrangement • 10 MHz GPDO Converter • Control and visualization software. • Bill of Materials • Drawings

  5. GPS Antenna

  6. GPS Antenna

  7. Power Supply • 3.3 – 5.4 VDC with < 100 mV ripple • 85 mA steady state • Garmin has onboard LDO • Use one 3.7 Varta lithium flat packs charged by TI charging chip. • Measure battery life off-unbilical. • Add parallel units to extend time. • Add series units and LM317 to increase voltage headroom.

  8. Connector Cable

  9. 10 MHz GPDO Converter

  10. Bill of Materials

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