The specs that I found here: http://web.archive.org/web/20010302193035/http://www.isotemp.com/ocxo107.htm
say the electrical EFC range is > 0.1 PPM, but that's for the version with the D/A converter. I can't find any hint about our version.
My unit is starting to settle down. Yesterday aging was in the e-8 range, today it's in the e-9 range. Spec is < 2e-10/day.
Earlier I babbled something about a 200 Hz tuning range. I don't know what I was thinking. The tuning range is 5 MHz +3 Hz to -7 Hz. So far the drift has been upwards so I have lots of room to slow it down.
Ed On 3/14/2014 3:30 AM, Poul-Henning Kamp wrote:
Since I had it out, I decided to let it run and this morning I measured the EFC characteristic. In my case perfect frequency is at 4.025V and the sensitivity is 0.2317 PPM/Volt so the design EFC range is probably +/- 1PPM
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