Safran SecureSync 2400 - Page 42

Spurious: ˗70 dBc minimum; ˗60 dBc minimum (Rb)
Connector: BNC female
Signature Control: This configurable feature removes the output signal
whenever a major alarm condition or loss of time synchronization condition
is present. The output will be restored once the fault condition is corrected.
Accuracy rating depends on the oscillator selected during the ordering pro-
cess.
Table 1-7: 10 MHz output — oscillator types and accuracies
Oscillator Type Accuracy
Low-phase noise Rubidium 1x10
-12
typical 24-hour average locked to GPS
1x10
-11
per day (5x10
-11
per month) typical aging unlocked
Rubidium 1x10
-12
typical 24-hour average locked to GPS
1x10
-11
per day (5x10
-11
per month) typical aging unlocked
Low-phase noise OCXO 1x10
-12
typical 24-hour average locked to GPS
2x10
-10
per day typical aging unlocked
OCXO 1x10
-12
typical 24-hour average locked to GPS
1x10
-9
per day typical aging unlocked
TCXO 1x10
-12
typical 24-hour average locked to GPS
1x10
-8
per day typical aging unlocked
Note: Oscillator accuracies are stated as fractional frequency (i.e. the
relative frequency departure of a frequency source), and as such are
dimensionless.
See also "Configuring the Oscillator" on page252.
Table 1-8: 10 MHz output — oscillator stability
Oscillator Type
Medium-Term Stability
(without GPS after 2
weeks of GPS lock)
Short-Term Stability
(Allan variance)
Temperature
Stability (p˗p)
1sec. 10sec.
100
sec.
Low-phase noise
Rubidium
5x10
-11
/month (3x10
-
11
/month typical)
1x10
-11
1x10
-11
5x10
-12
1x10
-10
Rubidium 5x10
-11
/month (3x10
-
11
/month typical)
1x10
-11
9x10
-12
4x10
-12
1x10
-10
26
CHAPTER 1 • SecureSync 2400 User Manual Rev. 5.2
1.6 Specifications