48-Hour Holdover Mission Critical Applications sine wave total he

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Profile Rubidium Oscillator
48-Hour Holdover Mission Critical Applications
sine wave total height <5E-11/month aging cost, single design Single supply; wide operating supply range 32V) Alarm signal 5E-8 unlock) CMOS compatible Meets TDMA frequency requirements without external reference routine calibration Compliant
LPRO designed ease integration into time frequency systems because profile single circuit board design. height footprint designed accommodate application. Great care been taken design minimize emissions susceptibility, including both filter plate connector signals outer mu-metal cover. easy integrate into system, requiring only input supply voltage allowing direct plug-in into another circuit board. offers high reliability design that been refined over many years from experience gained fielding tens thousands EFRATOM rubidium oscillators. one-board package incorporating surface mount technology. Suitable applications telecom networks such digital cellular/PCS base stations, SONET/SDH digital network timing, etc. Linked with receiver, LPRO provides necessary timing requirements CDMA cellular systems. temperature coefficient excellent frequency stability extend holdover performance when signals available. LPRO designed long operating periods without maintenance (long life lamp, extended crystal control range) with goal exceed years. design provides stable frequency with good short long term stability, excellent spur performance. LPRO provides CMOS-compatible alarm signal derived from basis physics operation which indicates when output frequency outside roughly absolute frequency offset.
Profile Rubidium Oscillator
Electrical Specifications
Unless otherwise indicated, input @25°C Output/Frequency/Waveform: sine wave
Environmental Specifications
Operating Temperature: -25°C baseplate +70°C
(-20°C baseplate +70°C including warm-up)
Output Level: Output Impedance: Phase Noise (SSB):
0.55 VRMS 0.05VRMS into [+7.8 dBm] 1000 Other: >100 Monthly (after month): years dBc/Hz dBc/Hz -128 dBc/Hz -140 dBc/Hz -147 dBc/Hz <-51 <-65 <-89 <-97 <-100 <-68 <5E-11/month <1E-9
Temperature Coefficient: (70°C) (-25°C)|
(50°C) (0°C)|
<6E-10 <3E-10
Storage Temperature: Altitude:
-55°C +85°C -200 40,000 -200 70,000 11/GAUSS
Operating: Non-operating:
Magnetic Field Sensitivity, GAUSS): Relative Humidity: Vibration:
Operating Non-operating (transportation)
Spurs:
Harmonic: Non-Harmonic:
non-condensing; meet exceed Telcordia GR-63-CORE Issue October 1995, section 4.1.2. Meets exceeds Telcordia GR-63-CORE, Issue October 1995, section 4.4.3 section 5.4.2 unlock. peak sine 5-100Hz). Telcordia GR-63-CORE, Issue October 1995, section 4.4.4 section 5.4.3, curve Figure 4-3. (1.5 peak sine 5-500Hz)
Aging:
Frequency Accuracy Shipment: 5E-11 (25°C) Frequency Retrace:
<±2.5E-11 (after power 25°C power off) t=10 t=100 <2.5E-11 <0.8E-11 <0.25E-11 ±1.5E-9 ±1.5E-9 +5V) 1E-11 25°C) <7.3 <10.6 <1.43 amps
EMI:
Compliant Part Class (conducted radiated emissions) complies with EN55022B emissions (radiated conducted) EN50082-1 (immunity).
MTBF: Telcordia GR-63-CORE Issue (Ground Fixed, Controlled)
Amb. Temp: 20°C 25°C 30°C MTBF (hrs) 381,000 351,000 320,000 (RELEX software V5.1, part stress, case 40°C 253,000 50°C 189,000 60°C 134,000
Short Term Stability:
Frequency Control:
Internal trim range (trimpot): External trim range (electronic):
Physical Specifications
Weight: Size: Warranty: Extended Warranty:
1.10 lbs. max. 3.7" 5.0" 1.5" years Consult factory
Setting Resolution, trim pot: Warm-up:
Time Lock: Time <1E-9: Time <4E-10: Input (Amps) @24V:
-20°C) <10.2 <12.7 <1.45 amps 32.0
Note: Consult factory application support, test reports special requirements.
Input Voltage Range: Voltage Sensitivity: Input Power, Quiescent: Status Monitor:
Analog Digital Lock: Unlock:
.72E 11/V (over input voltage range) +24Vdc <13W 25°C +19Vdc 65°C VCXO volts, lamp volts kOhm impedance, filtered) LOCK monitor: CMOS load (within ~±5E 4.7V
DATUM, Inc. Parker, Irvine, 92618-1696 Telephone (949) 598-7600; (949) 598-7650 DATUM GmbH Fichtenstr D-85649 Hofolding (Munich) Germany Telephone 04-66240; Telex 529701; 04-662428
more information call 1-800-337-2866 U.S. visit World Wide http://www.datum.com continuously updated product specifications, news information.
Specifications subject change without notice. Copyright 2000 DATUM Inc.
102502 1/26/00 Rev.

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