Using electronic parts, precision craftsmanship, and long service life. Constant temperature 10MHz, ultra-low phase noise, low noise, portable and reliable. This product uses a 10MHz frequency standard provided by an OCXO oven-controlled crystal oscillator. Constant temperature crystal oscillator means that this product uses a constant temperature bath to keep the temperature of the crystal oscillator or quartz crystal oscillator constant, so that the output frequency change of the oscillator caused by the ambient temperature change is reduced to a minimum, making it have a higher accuracy, ±0.01 Hz. Equipped with SMA outer screw inner hole interface. It has a wide range of applications and can be used for inst ent benchmarking such as audio systems, decoders, shortwave radios, frequency meters, signal sources, etc. Name: Frequency reference source Current consumption: less than 750mA in the warm-up phase, less than 300mA in the working phase Warm-up time: ≈ 5 minutes Calibration accuracy: ±0.01Hz Frequency stability: 5e-12 Output level: dBm: 10dBm±2dBm@50Ω VRMS: 0.7071V@50Ω VPeak: 1.0V@50Ω -P: 2.0V@50Ω Output impedance: 50Ω Interface type: SMA external screw inner hole : electrical Model: OCXO-10MHz Colour:Black Material:plastic Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * frequency reference source 1 * cable 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.