> I just become the owner of a Precision Crystal EROS-750- SBR -4 > voltage controlled OCXO. I believe that this is the oscillator that > is used in the SRS SR620 Frequency Counter when it has the 2-ppb > option-01 timebase (please correct me if wrong info). The unit has > four terminals simply labled 1-4 on the bottom as well as the case > studs. The label says it is a +15VDC unit. Can anyone provide the > pin-out of this oscillator. Short of an actual pin diagram, can > anyone suggest a way to help identify each pin function, i.e. DC > resistance, AC impedance, safely applying power with series > resistance? I do not want to blow this unit as I have high hopes for > it as a replacement disciplined oscillator in my Trimble Thunderbolt > GPS timebase. I will be glad to share my conversion experience as I > proceed with this project. Thanks in advance for any help. > > Don Johnson > True-Cal Services *********** So what happened to the original oscillator, Don? DaveB, NZ
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