Spectracom SecureSync 1200 User Manual

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 2x10
-12
typical 24-hour average locked to GPS
1x10
-9
per day typical aging unlocked
TCXO 1x10
-11
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 fre
quency departure of a frequency source), and as such are dimensionless.
See also "Configuring the Oscillator" on page196.
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 vari
ance)
Temperature
Stability
(p˗p)
1sec. 10sec.
100
sec.
Low-phase noise
Rubidium
5x10
-11
/month (3x10
-11
/month
typical)
5x10
-11
2x10
-11
5x10
-12
1x10
-10
Rubidium 5x10
-11
/month (3x10
-11
/month
typical)
2x10
-11
2x10
-12
2x10
-12
1x10
-10
Low-phase noise
OCXO
2x10
-10
/day 5x10
-11
2x10
-11
1x10
-11
1x10
-9
OCXO 5x10
-10
/day 5x10
-10
5x10
-11
1x10
-11
5x10
-9
TCXO 1x10
-8
/day 2x10
-9
1x10
-9
3x10
-10
1x10
-6
1.7.7.1 10 MHz output — Oscillator Phase Noise (dBc/Hz)
Oscillator Type @ 1Hz @ 10Hz @ 100Hz @ 1KHz @ 10KHz
Low-phase noise Rubidium ˗100 ˗128 ˗148 ˗153 ˗155
1.7 Specifications
CHAPTER 1 • SecureSync User Reference Guide Rev. 23
25

Spectracom SecureSync 1200 Specifications

General

Brand	Spectracom
Model	SecureSync 1200
Category	Control Unit
Language	English