Rubidium Frequency Standard
Last Modified January 10, 2001
The model 2950AR Rubidium Frequency Standard provides three
simultaneous outputs of 10MHz, 1MHz, and 100kHz. The 2950AR contains an
Atomic Resonance Rubidium Oscillator and is ideal for use as a master
oscillator in laboratories and ground stations as well as for test and
The 2950AR Rubidium Frequency Standard offering has three
versions. Dubbed the 2950AR/01, /02 and /03, these new versions provide
additional output frequency capabilities. The 2950AR/01 provides three
10MHz outputs. The 2950AR/02 provides 10MHz, 5MHz and 100kHz, while the
2950AR/03 provides customer specified combinations of 10MHz, 5MHz, 1MHz
and 100kHz (up to three simultaneous outputs). The same accuracies and
specifications are maintained.
FREQUENCY STABILITY (˜)
Short Term t=1s <2.5x10-11
Aging Monthly <5x10-11 after 1 month
Yearly <5x10-10 after 1 year
Temperature -10 to +40C <4x10-10
Line Voltage(˜ 10%) <0.4x10-11
At shipment: <= ˜5x10-11 at 25C internal baseplate temperature.
Retrace: <= ˜4x10-11 of previous frequency after 24 hours on and up to 48 hours off (constant temperature).
10MHz, 1 MHz and 100 kHz simultaneously
1VRMS ˜ 0.25 VRMS into 50 ohms
50 ohm ˜ 5%
PRONT PANEL INDICATOR LIGHTS
POWER Indicates power is on
RUBIDIUM LOCK Indicates output is locked to Rubidium Oscillator
All outputs (typ.): Harmonic: <-40dBc, Non-Harmonic: <-70dBc
10MHz output, typical (dBc/Hz)
Temperature: 5 to 40 C operating
Altitude: 2000 Meters Maximum
Humidity: 80% to 31C, decreasing linearly to 50% at 40C
2.5" H, 7.3" W, 9.5" L excluding bail and feet
120/240 VAC ˜10%, 50/60Hz. 35VA (65VA during warm-up, <= 10 minutes)
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Novatech Instruments , Inc.
P.O. Box 55997
Seattle, WA 98155 USA
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