EPSILON CLOCK MODEL EC22S
Spectracom Corporation
EPSILON CLOCK User’s Manual
2-2
2.1.4 Phase Lock-in at Power-up
2.1.4.1
Warming-up
-
Warm-up time for the local oscillator before tracking search: 10 minutes
-
A subsequent fast tracking search brings the oscillator frequency close to the reference
input signal frequency
2.1.4.2
Lock-in Time with GPS signal
-
Output wander compatible with EN 300 462-4-1 (4.1) fig. 1 in: 600 s max after warming-
up
-
Optimum stabilization after 2 hours
-
Total locking time after power-up: < 30 minutes if not a first time power-up
2.1.5 10MHz output
-
Number of outputs: 8.
-
Port type:
50
Ω
BNC coaxial.
-
Level: 12+/-2dBm, with a 50
Ω
load.
-
Sinewave signal, -35dBc harmonic distortion
2.1.5.1
Phase Noise
Typical, static conditions:
10Hz
-120dBc/Hz
100Hz
-130dBc/Hz
1kHz
-140dBc/Hz
10kHz
-145dBc/Hz
100kHz
-145dBc/Hz
2.1.6 1PPS Output
-
Number of outputs: 8
-
One female 50
Ω
BNC coaxial connector per output
-
Accuracy to UTC, GPS locked: +/- 25ns (1
σ
)
-
Accuracy to UTC instantaneous (phase locked): +/- 35ns max (peak to peak)
-
Phase jump on switching (phase locked): +/- 70ns max (peak to peak)
Holdover (constant temperature, 24 hours GPS locked)
after 4 hours
0.8 µs
after 1 day
12 µs
-
Port type:
50
Ω
coaxial.
-
Level: TTL/5V, with a 50
Ω
load.
Содержание EC22S
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