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Trim voltage vs frequency, note the inverse relationship

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A measurement of the signal output before stabilization, notice the truncated/flat-top sine while the heater is at 100% load

JPEG Image - 278.14 kB - 07/04/2025 at 22:21

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Trim stabilization after preheating, note the 170mA draw of the heater circuit (vs 300mA peak)

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A measurement of the signal output after stabilization

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Breadboard setup used during investigation of pinout

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Ratsnest...

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Sensitivity Graph.png

Plot of output frequency after preheating and stabilization

Portable Network Graphics (PNG) - 14.00 kB - 07/04/2025 at 22:21

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Noise carried on the 10Mhz signal after stabilization

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Noise carried on the 10Mhz signal during initial heating

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Breadboard setup

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Trim and output values after long term (>16.7 hours) stabilization

JPEG Image - 166.21 kB - 07/04/2025 at 22:21

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Investigating crystal drift during initial oven warmup, note the 300mA load from the heating filament, and the 9,999,867 hertz value at the trim value of 2.501 volts

JPEG Image - 169.24 kB - 07/04/2025 at 22:21

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