I salved this Vectron crystal oscillator from some old equipment. Based on the PCB I was able to figure out the pin-out (it had only 4 pins, 2 were ground). It was powered from 5V, but I don't know what range it could accept. The unit is old and Vectron has no info on it anymore they said. It has a frequency adjustment pot (under the tape) and generates a 10 kHz square wave (see screenshot). The DM3058E says it's 10.0000 kHz exactly. Does anyone have any more info on this? Allowable input voltage range, accuracy & precision, etc? A datasheet is probably too much to ask for.