Features: GPSDO (Global Positioning System Disciplined Oscillator), also known as GPS Tamed constant temperature crystal oscillator, GPS tamed clock, 10MHz standard signal source. Compared with time base, it has higher accuracy, lower temperature drift and more stable output. It is the use of GPS 1PPS signal, microcontroller comparison, by the microcontroller output 16Bit PWM to control the isothermal crystal output accuracy, isothermal crystal frequency fine-tuning voltage is 0-5V, then the 1Bit PWM can control the output voltage is 0.000076V. the machine are the front panel has a display screen and encoder, and the back panel has a 10MHz output interface, 1PPS output interface, GPS antenna interface, power switch and 12V DC power interface. Application scenario: GPSDO is suitable for high-end audio decoders, instruments, meters, frequency meters, signal sources and other devices with external 10MHz reference source input Parameters: Supply voltage: DC5525, 12V ±2V Working current: 650mA when preheating and 350mA when stabilizing Output frequency: 10.000000.000MHz ±0.001Hz Output waveform: square wave Output amplitude: -45dBm Constant temperature crystal: ISOTEMP OCXO 143-141 GPS module: NEO-6M Material: Metal+Plastic colour: Black Package Contents: 1 x host (Power adapter not included) 1 x GPS antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.