Stratum 3 Small Cells Switches and Routers Time & Frequency References SyncE and IEEE 1588 Standard Specifications Parameter Frequency calibration Reflow shift ppm ppm Frequency stability over temperature in still air Frequency slope ΔF/ΔT in still air Operating temperature range Supply voltage stability Load sensitivity ppb/°C °C ppb ppb Acceleration sensitivity Holdover drift ppb/g ppb Free‐run accuracy Loop bandwidth for wander generation compliance ppm mHz Root Allan Variance (20 MHz) Supply voltage (Vcc) Input power (warm up) Input power (steady state in still air, 25°C) Oscillator output – C/Sinewave Oscillator output – HCMOS Output voltage level high (VOH) Output voltage level high (VOL) Duty cycle Rise and fall times Load ppb ppm ppm V mW mW Vpk‐pk V V % ns pF The time needed for the frequency to be within ±20ppb of the frequency after 1 hour, at 25°C. This parameter is frequency, assembly and operating history dependent Gamma vector of all 3 axes, 30 to 1500Hz 24 hours, temperature variation ≤ ±1°C. After 30 days of continuous operation All causes, 20 years life, reference to nominal