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 ppb/g ppb Loop bandwidth for wander generation compliance Root Allan Variance (20MHz) Supply voltage (Vcc) Input power (warm up) Input power (steady state in still air,25°C) 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 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
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