TIMING, TEST & MEASUREMENT 1000B Ultra-Stable Crystal Oscillator KEY FEATURES Symmetricom’s 1000B achieves low aging Linearized electronic frequency control • Low Aging, 5.0E-11 Per Day rates by utilizing high-performance SC-cut allows the use of servo loop techniques for quartz crystal resonators. The specified fine frequency tuning. Linearity is better • Low Phase Noise, -160dBc at 10 kHz aging is reached within 30 days of continuous than 5% over the specified tuning range. • Independently Buffered Outputs operation, and typically continues to improve. The 1000B crystal oscillator meets the Several users report observed aging rates demands of a wide range of applications for • Linearized Electronic as low as 1E-12 per day after years of military and industrial environments. The Frequency Control continuous operation. oscillator is found in precision frequency • Fast Warm-Up, 15 Minutes to 2.0E-8 counters and synthesizers, GPS receivers, • O°C to 55°C Operating A dewar-insulated oven provides superior microwave multiplier chains, phase noise Temperature Range temperature stability over the full temperature calibration test equipment, Stratum II range. The maximum frequency change telecommunications applications, radar and over the operating temperature range is<5E-9. tactical communications systems, secure An oven temperature indicator (10mV per communications systems, satellite ground degree K) is provided at the power connector. terminals and space flight systems. The oscillator circuit produces phase noise of -116 dBc at 1 Hz and -160 dBc at 10 kHz. Low noise, high isolation buffer amplifiers provide four independent outputs. The buffer amplifiers isolate outputs from load variations. An internal voltage regulator minimizes fluctuations due to power supply ripple. 1000B Ultra-Stable Crystal Oscillator 1000B SPECIFICATIONS ENVIRONMENTAL & PHYSICAL SPECIFICATIONS • Supply sensitivity ELECTRICAL SPECIFICATIONS 1% change in input <1.0E-11 • Frequency: (4) 5MHz • EMI susceptibility (side bands) • Amplitude: (2) 1Vrms, (2) 0.5 Vrms 0.1Vrms on power supply inputs • Harmonic distortion: <-40dBc 10 Hz to 104 Hz <-100dBc • • Spurious signals: <-80dBc Temperature • Short term stability: Operating: 0°C to 55°C Non-operating: -40°C to 85°C 1s <1.0E-12 • Power requirements 10s <1.0E-12 Warm-up: <13W • Aging per day (see note 1) <1.0E-10 Operating at 25°C: <3.5W (after 30 days of operation) • Warm-up to 2.0E-8 of • Phase noise (-dBc/Hz): final frequency: <15 minutes 1 <-116dBc • Oven monitors temperature: 10mv/C 10 <-140dBc • Dimensions: 3.0”W x 6.54”D x 3.0”H 100 <-150dBc • Weight: <1.5lbs (0.67kg) 1000 <-157dBc • Connectors 10kHz <-160dBc RF (J1 - J4): SMA 100kHz <-160dBc Power (J5): 9 pin D-subminiature • Temperature coefficient: <1.0E-9 • Frequency adjustment range ORDERING INFORMATION Part No. Tuning slope: Positive • 1000B with (4) 5MHz outputs 05818-103 Control range: 0 to 10V • Load change (50Ω +/-10%) <5.0E-11 Note 1: Aging typically improves to a level of parts in 1E-11 per day (1E-8/year). After • Input voltage years of unperturbed operation, some users have observed aging rates as low as Oven supply: 18 to 30VDC 1E-12. Electronics supply: 18 to 30VDC Bottom View Front View SYMMETRICOM, INC. 2300 Orchard Parkway San Jose, California 95131-1017 tel: 408.433.0910 fax: 408.428.7896 info@symmetricom.com ©2009 Symmetricom. Symmetricom and the Symmetricom logo are registered trademarks of Symmetricom, Inc. All specifications subject to www.symmetricom.com change without notice. DS/1000B/D/1009/PDF