So it's been a while... I had some delays because of the crystals I thought I had, eBay sellers etc., but I finally got to doing this.
Here's what's on the improvised circuit:
- NOT gate by TI (SN74AHC1G04)
- 1.8432MHz crystal with 18pF load capacitors (I guessed the value - the crystals came with no datasheet)
- 1M resistor between inverter input and output.
- 1K resistor in series from inverter output to crystal input. It's small but it's there
I started by giving it 5V and measuring the output with the scope (Keeping in mind the warning about this), x10 probe.
The frequency looks very good (well, for a nameless crystal anyway), but the ringing is crazy - the resulting signal is 9V peak-to-peak!
Now, what are the odds that the ringing is just an artifact from the probe? I wouldn't want to feed these extremes into the clock pin of an MCU...