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50 Ohm Coax Driver Card
07/31/2022 at 10:10 • 0 commentsMade a 50 Ohm coax driver card (DRIVE50).
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- "TTL" Level Line driver
- 50 or 75 Ohm output impedance
- BNC or SMA output connector
- 10K pull-up on input
- Card is non-inverting
- 1.5V-5.5V power
- Typically 3.3V or 5V
- 3-pin right angle 0.1" pitch input connector
- (4) 4-40 mounting holes
Installed in Box
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Card works well.
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PulseGen Modifications
07/03/2022 at 18:10 • 0 commentsSome minor mods are required to the PulseGen card as a 50 Ohm driver These involves removal of the Oscillator R/C parts. If you order a PulseGen card from us on Tindie please let us know in the notes with your order and we will pre-build it with these mods.
Schematic Modifications
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PCB Modifications
The PPS out of the GPS gets attached to the pad as shown below. I used Superglue to hold the wire to the pad.
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10 MHz GPS Frequency Standard
Stand-alone GPS based design does not require PC. Generates a 10 MHz output after satellite lock.
