Description
In this video, I walk you through how to precisely tune and calibrate a 10MHz OCXO (Oven Controlled Crystal Oscillator) using a GPS module as a reference signal.
You’ll also see how to compare the OCXO’s output with a GPS reference signal on an oscilloscope, how jitter can affect your calibration.
I also show how to inject 10MHz into Si5351, to generate other frequencies like 50MHz or 100MHz, all synced to the GPS signal.
Lastly, I give a sneak peek into how my DIY GPSDO (GPS Disciplined Oscillator) works, explaining the phase-lock loop (PLL) works.
Whether you’re an electronics enthusiast, a DIYer, or someone looking to improve their frequency accuracy, this video will provide you with the tips and techniques you need to calibrate oscillators with professional-level precision.
🛠️ Topics Covered:
How to build a simple circuit to power and tune an OCXO
Using a GPS module to calibrate a 10MHz oscillator
Injecting a 10MHz reference signal into a clock module
Basics of GPSDO and phase-lock loop (PLL) synchronization
Oscilloscope tricks for frequency calibration
🔗 Links:
OCXO 143-141 10Mhz (what I used): https://s.click.aliexpress.com/e/_c3jY6ukB
OCXO with PCB (all already soldered) https://s.click.aliexpress.com/e/_DFL0a5x
GPS UBLOX (7M used)
The one I used is the video no longer sold, this should work: https://s.click.aliexpress.com/e/_c3M2u0nl
Antenna to boost signal: https://s.click.aliexpress.com/e/_c3jj08BN
Si5351 I2C Clock Generator: https://s.click.aliexpress.com/e/_c3N5AViR
ESP8266: https://s.click.aliexpress.com/e/_De5gu7f
SSD1306 OLED I2C Display: https://s.click.aliexpress.com/e/_c4Ci1fiP
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