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AHM
TIM part No 10351
Specifications of the EFOS_C Maser
Frequency Stability and Phase Noise
The main characteristics of the Maser are the frequency stability (Table 1) and the SSB phase
noise (Table 2):
Averaging time
tau [s]
Copyright © 03/2006, TimeTech GmbH
Data subject to change without notice.
24 Mar 2006
Page 2 of 5
Specification
Allan deviation
s y (2, tau)
5 MHz
ADEV typical
100 MHz
ADEV typical
1 1.5·10 -13 1.1 x 10 -13 9.0 x10 -14
10 2.0·10 -14 2.0 x 10 -14 1.5 x 10 -14
100 5.0·10 -15 3.2 x 10 -15 3.2 x 10 -15
1'000 2.0·10 -15 1.0 x 10 -15 1.0 x 10 -15
10'000 2.0·10 -15 5.0 x 10 -16 5.0 x 10 -16
Table 1 : Frequency stability
The phase noise specified in Table 2 is reached with the low noise OCXO (BVA 8607 OPT 08 from
Oscilloquartz, Switzerland).
Output signal
Specification
Output signal
typical
5 MHz 100 MHz 5 MHz 100 MHz
Frequency L(f) [dBc/Hz] L(f) [dBc/Hz] L(f) [dBc/Hz] L(f) [dBc/Hz]
1 Hz -129 ± 2 -100 ± 2 -129 -101
10 Hz -145 ± 2 -114 ± 2 -146 -114
100 Hz -152 ± 2 -122 ± 2 -153 -123
1'000 Hz -158 ± 2 -147 ± 2 -158 -147
10'000 Hz -158 ± 2 -155 ± 2 -158 -155
100'000 Hz -158 ± 2 -159 ± 2 -158 -159
Table 2 : SSB phase noise (with BVA 8607 OCXO)
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