Symmetricom 5071A - Accuracy and Stability

Chapter 6 Specifications
Accuracy and Stability
Operating and Programming Manual 111
Accuracy and Stability
Conditions:
Any combination of:
Temperature: 0 to 50˚C
Humidity: 0 to 80% (40˚C maximum)
Magnetic Field: dc, 55, 60 Hz; 0 to 0.2 millitesla (2 Gauss) peak —
any orientation
Pressure: 47 kPa (equivalent to an altitude of 6 km)
Shock Vibration: 100-mm drop
Parameter
Standard
Cesium Beam Tube.
Values are within:
High-performance
Cesium Beam Tube
Accuracy†
± 1 x 10
-12
± 5 x 10
-13
Frequency Change vs. Environment
± 1 x 10
-13
± 8 x 10
-14
Warm-up Time:
To normal operation status (typical)
To full specifications (typical)
15 minutes
30 minutes
15 minutes
30 minutes
Reproducibility†
± 1.0 x 10
-13
± 1.0 x 10
-13
Long-term Stability
Time domain Stability†
Averaging Time
5- and 10-MHz outputs
10
4
seconds
10
5
seconds
5 days
30 days
2.7 x 10
-13
8.5 x 10
-14
8.5 x 10
-14
2.7 x 10
-14
5.0 x 10
-14
5.0 x 10
-14
1.0 x 10
-14
1.0 x 10
-14
Flicker Floor Value†
Guaranteed
Typical††
5.0 x 10
-14
1.5 x 10
-14
1.0 x 10
-14
5.0 x 10
-15
† Footnotes are defined starting on page 115.