Frequency Standards SC10 — 10 MHz high-stability ovenized quartz oscillator SC10 Ovenized Quartz Oscillator · SC-cut crystal for low phase noise · 2 × 10−12 Allan variance (1 s) · Low aging (<2 × 10−10/day) · +15 or +24 VDC operation · Flexible electronic frequency control The SC10 is a high-stability, ovenized 10 MHz quartz oscillator that combines excellent phase noise, Allan variance, and aging characteristics. Using an SC-cut crystal for lowest phase noise characteristics, and an innovative electronic double oven temperature controller to minimize temperature gradients, the SC10 achieves a one second Allan variance of 2 × 10–12 and an aging rate of only 2 × 10–10, making it ideal for virtually any precision timing application. Convenient Options A number of options can be specified to match the SC10’s performance to your requirements. +15 or +24 VDC operation can be specified, and the output is available on SMA, SMB, and SMC connectors, or on a single pin. Aging, noise, temperature stability, and operating temperature range can all be separately specified in one of three grades so you only pay for the performance you need. Electronic fine tuning (EFC) is available with a number of tuning ranges and slopes. · SC10 ... $350 (U.S. list, base price) Stanford Research Systems

Grade Dependent Specifications J K A Frequency 10 MHz 10 MHz 10 MHz Aging (per day) <1 × 10–9 <5 × 10–10 <2 × 10–10 Allan var. (1 s) <1 × 10–11 <5 × 10–12 <2 × 10–12 Phase noise (per Hz) 10 Hz < –120 dBc < –125 dBc < –130 dBc 100 Hz < –150 dBc < –150 dBc < –150 dBc 1 kHz < –158 dBc < –158 dBc < –158 dBc 10 kHz < –158 dBc < –158 dBc < –158 dBc Temp. range (°C) 0 to 50 –10 to 60 –20 to 70 Temp. stability <±2 × 10–9 <±1 × 10–9 <±5 × 10–10 (0 to 50 °C) Power Warm-up 8 W 8 W 12 W 25 °C 3 W 3 W 3 W Mech. tuning range EFC range and slope Option 1 Option 2 Option 3 Option 4 Option 5 Option 6 Option 7...