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Stratum IIIE Stratum III Sonet Minimum Clock Stratum IV/IVE
TELCORDIA
ITU Std

GR-1244 CORE

 GR-1244 CORE
ITU-T G.813 opt. 1		 GR-253 CORE
ITU-T G.813 opt. 2

GR-1244 CORE
Long term stability ±4.6 ppm
20 years		 ±4.6 ppm
15 to 20 years		 ±20 ppm
15 to 20 years		 ±32 ppm
15 to 20 years
Holdover stability (24 hours) ±0.012 ppm ±0.37 ppm ±4.6 ppm N/A
Drift (24 hours) ±0.001 ppm ±0.04 ppm ±0.5 ppm N/A
Model Freqency
(MHz)		 Type 0 to 70°C -40 to 85°C 0 to 70°C -40 to 85°C 0 to 70°C -40 to 85°C 0 to 70°C -40 to 85°C
7 x 5 mm
DFA S2-LHZ/KHZ 5 to 20 TCXO BS3 ES3 BSM ESM
DFN S2-LHZ/KHZ 2 to 130 PXO XB32D XE32D
14 x 9 mm
DFA S1-LHZ/KHZ 5 to 20 TCXO BS3 ES3 BSM ESM
DFN S1-LHZ/KHZ 2 to 130 PXO XB32D XE32D
DFO S1-LHZ/KHZ 10 to 40 OCXO BS3
20 x 13 mm
Model 114 10 to 20 OCXO 114 114
Model 138 12.8 to 25 OCXO 138
25 x 22 mm
DFA S4-LHZ/KHZ 5 to 20 TCXO BS3 ES3
Model 119
 10 to 20 OCXO
119
25 x 25 mm
Model 118 10 to 20 OCXO 118
DIL 14
DFA 14-CLH/CH 5 to 20 TCXO BS3 ES3 BSM ESM
Model 114 10 to 20 OCXO 114 114
Model 138 12.8 to 25 OCXO 138
  		 

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