OCXO 8600 BVA Oven Controlled Crystal Oscillator

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1 BVA Oven Controlled Crystal Oscillator The 8600-B series is based on the technique of housing a state-of-the-art BVA crystal resonator and its associated oscillator components in double oven technology. The achieved overall frequency stability is 10 times better than any other OCXO s available on the market. The BVA itself consists of an electrodeless, AT-cut, 5th overtone quartz crystal resonator decoupled from its mounting structure by four rigid bridges. This unique design has resulted in substantial features by eliminating: 1. The perturbing surface contacts between electrodes and resonator 2. The contamination problems linked to ion migration in the resonator 3. The constraints in the mounting connections Thanks to its remarkable overall frequency stability, the 8600-B BVA quartz crystal oscillator represents an excellent alternative to compact atomic standards. Features Standard long term stability < 2 x / day and < 4 x 10-9 / year Frequency stability 2 x over 30 C to + 60 C Ultra low phase noise and outstanding short term stability Excellent static "g " sensitivity Remarkable overall frequency stability Benefits Ideal as a stand-alone reference clock with reduced calibration intervals Excellent immunity to temperature gradients Ultra-clean signal generation for frequency multiplication Reduced effects on phase noise characteristics Compatible with CCITT level 2 recommendations and T1X1 Stratum 2 requirements Applications Synchronization of digital networks and switching equipment Frequency distribution systems for satellite ground stations Radio navigation and positioning equipment GPS and Loran-C receivers Cesium and Hydrogen atomic frequency standards Measuring and calibration equipment Frequency synthesizers Satellite communications Very Long Base Interferometry (VLBI) Oscilloquartz S.A. Rue des Brévards 16, 2002 Neuchâtel, Switzerland / Tel / Fax osa.xo@oscilloquartz.com / Internet:

2 Standard / Option B 3 Option Standard Synthesis Crystal resonator Standard frequencies Optional frequency Operating temperature range Frequency stability ( f/f) Long term stability 2 x / day (aging after 30 days of continuous operation) 5 x / month 4 x 10-9 / year Over temperature range 2 x pp Versus power supply Versus load changes BVA technology 5 and 5.12 MHz 10 and MHz -30 C to +60 C G : 1 x /day H : 5 x /day J : 3 x /day see table 1 x pp 5 x (Vcc ±10%) 2 x (50 Ω ±10%) Short term stability σ (τ ) 1 x / ( s) 5 x ( s) see table g sensitivity Frequency control range Standard: M Mechanical 1 x 10-9 / g (typ. 5 x / g) Option: E Full Electrical Coarse adjustment option M Fine adjustment option M Fine adjustment option E Output specifications Wave form Level / Impedance > ± 1x10-7 by built-in 10 turn pot. with external control voltage at +5V > ± 2x10-8 by external control voltage 0 to + 10 Volts (with built-in potentiometer centered for nominal freq. at +5V) > ± 1x10-7 < ± 1.5x10-7 by external control voltage 0 to + 10 Volts on both SMA connectors Sine 7 dbm ±1 / 50 Ω Phase noise at 5 MHz ( Bw = 1 Hz) 1 Hz dbc dbc Lower value on request 10 Hz dbc dbc 100 Hz dbc dbc 1'000 Hz dbc dbc Harmonics Spurious Power supply Input voltage range (DC) Power consumption Environment Storage temperature Vibration Shock Size (L x W x H) Weight Outline & electrical connections < - 40 dbc < - 70 dbc + 24V DC ± 10% < 3 W after warm-up at 25 C, < 10 W during warm-up - 30 C to +85 C MIL STD g, 11 ms, 3 shocks in each direction of the main axis x 72.6 x 84.4 mm 900 g see table Oscilloquartz SA reserves the right to change all specifications contained herein at any time without prior notice 2

3 Aging Standard / Option Standard Option G Option H Option J * Aging per day 2 E-11 1 E-11 5 E-12 3 E-12 * Aging per year 4 E-9 3 E-9 2 E-9 1 E-9 * after continuous operation of 30 days 60 days 90 days 90 days Short term stability Options *Sigma Tau < 1E-12 (Tau = 0.2 to 30s) 8600-B *Sigma Tau < 5E-13 (Tau = 0.2 to 30s) *Sigma Tau < 3.5E-13 (Tau = 0.2 to 30s) option 35 *Sigma Tau < 3.0E-13 (Tau = 0.2 to 30s) option 30 * For better value see our 8607 model Holdover Autonomy for PRC-traceable Performance, 10 C Temperature Variation Network Limit for SSU Output (ITU-T Rec. G.823) BVA 8600 G BVA 8600 H BVA 8600 J Rb 1 Rb MTIE [s] Observation Interval [s] 3

4 Sigma Tau Aging Pulling Thermistor Phase noise Temperature 4

5 Outline and electrical connections All dimensions in mm (inches) SMA connectors J1 : = 7 dbm / 50 W J2 : = 7 dbm / 50 W SUB D connector J3/1 : Thermistor J3/2 : 0V (GND) J3/3 : Ground J3/4 : CCW pot. J3/5 : Vc input J3/6 : Thermistor J3/7 : + 24 V J3/8 : NC J3/9 : CW pot 5

6 Ordering Information Example : G - E MHz Option 30 Model Version 3: Synthesis Aging option G: < 1E-11/Day Pulling E: Full electrical pulling Nominal frequency output MHz Short term stability option Sigma Tau < 3.0E-13 (Tau = 0.2 to 30s) 6