Manufacturer: Piezo Crystal Co. DHXO crystal oscillator module, using SC cut crystal at 10MHz [directly heated crystal oscillator] Fast warm up * small size * Low phase noise * low aging * Low DC power * Light weight This version electronic fine adjustment +/- 2ppm. New Item with individual test report. SPECIFICATIONS/TESTED DATA OUTPUT: F 10.000000MHz. Set-on Tolerance +/- 1.0e-7. Square wave out. (54AC04 gate output) SUPPLY: 12V DC +/- 5%, 40mA PHASE NOISE: 10Hz -115dBc/Hz 100Hz -145 dBc/Hz 1KHz -150dBc/Hz 10KHz -150 dBc/Hz FREQUENCY STABILITY: Temperature +/- 2e-7 from -10 to +70 Deg.C. Aging: +/-1.0e-9 /day, +/-3.0e-8 / Year Warmup +/- 1e-6 within 0.8 minutes at 25 Deg.C. Acceleration Sensitivity 1.0e-9 per G. Short Term stability: ~ 1e-11/second FREQUENCY CONTROL: Electrical Adjust +/- 2ppm, 0 to 5V control voltage range. Mechanical Adjust: +/- 2ppm SIZE: 1.5 x 1.5 x 0.6 inches.