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ֻ̨,.PF-140ΪһȺĴȺͨϵͳĽʹúάֳӦöƵ,DZҲжSDH/SONETϵͳ(STM-1/STS-3STS-1ij֡)IJԺͼ.
----ΪֳӦö:,㲢ڲ
----߷ֱʵĴ洢ͼιܱھȷطϵͳ
----ΪӦӦö߱ѡĿ
----ڲԶ
ǰ,дͬ豸άķ,ϵͳ쳧̺Ÿ
ָIJ.豸ԱӦ.PF-140ṩһû
ѡĿ,ܾõؽ,ԺԺؼʱѡ.PF-140
Ϊչضʡ˷,ʹʹIJԤ.
PF-140Ӧ:
-ʲ
-PDHSDH/SONETϵͳ
-Դõȥ(140Mbit/sn64kbit/s)ķ֧ŵ
-,ȥͽIJ
-ô澯ģװòԸ澯
-Զ
-PDHSDH˿Ͻж
-ȷ
-ITU-TG.821M.2100
-ͶƵֱͨģʽ
-ʱӲ
-V.24/RS232Զ̿
-ڲӡⲿӡôӡ.Ļϵͼɴӡ.
ʹ,DZΪֳʹöƵ.Ӧõûӿ,ԶúõĴ洢,.Ŀť,͵Ļɲ˵IJʹDZʹü.PF-140бֿ;бDZ,ڲʱ̶ֹDZĺ,ڷŴط.
PDHSDH˿Ͻж λֹ(WAN)ͨ͵ĸԴ.ڼ,ͨ·ܱòʹ.ָ붯Ӱ죻SDHԪPDH˿ھִĶ.ǵĿ,ȶλͬ·رڴIJ;
ͼʾ澯,Դλ ,ֱʵķΧ1/ֱ1/ֱ.澯ʾϸ.PF-140߾ܶ澯1msķֱʽ澯Уܻ洢ṹںܳIJڼҲָܱ߷ֱ.ڴ洢֤ʹڳ60,Ҳᶪʧ,ֱΪ1Сʱ.ͬʱ,PF-140ĸ߷ֱʴ洢1ms/1sķֱʼ¼20000ĸ澯/룻
ԶMTJ ISDN,GSM,Ƶ/ƵATMһЩҵ㷺Ӧõ½֧·IJ.вôͬϵͳԪԼΪӦSDH·,ĶԽԽߵҪ.ҵڵ߲֤ǸгЧε,PF-140ܾȷȷֽӿڵ빤Χ.Զڼ,вͼʾ,ITU-T G.823ģ֮κνԸķʽʾ
澯ɨ ߲ʽ֧·ź(140/34)/8/2Mbit/s)гֵĹϣPF-140Բ3ʱԶ85֧·źɨ貢ǷAIS,֡ͬʧԶ˸澯(RDI)ͬڿȷͨϵͳ״̬Լȷλ(24С֮ڳλ)
ָ
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Bit rates |
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Internal colck supply |
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Bit rates |
704,2048,8448,34368,139264kbit/s |
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Stability:2ppm;Aging:less than1ppm per year |
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Bit rate offset(step width 1ppm) |
500ppm |
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External clock supply |
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Bit rate range |
700to 156000kbit/s |
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TX clock is derieve fromRX signal for untramed TX signals |
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Bit rates |
704,2048,8448,34368,139264kbit/s |
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Digital signal outputs |
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Interfacesto ITU-T Re. G 703. |
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Inbalanced signaloutput 75* |
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Line codes |
HDB3,AMI,B3ZS |
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Bit rate range |
0.7 to 52Mbit/s |
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Line codes |
CMI,CMI inmverted,NRZ/ECL |
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Bit rate range |
2(NRZ:0.7)to 156 Mbit/s |
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Balancedsignal output 120 Lemosa socket |
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Line codes |
HDB3,AMI |
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Bit rate range |
0.7 to 3Mbit/s |
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Clocksignal input for operation from external clock |
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75 unbalanced,BNCsocket |
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Required input voltage |
0.5to 4V |
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Clock signal output |
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75unbalanced ,BNC socket ,ECL level |
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Test pattern |
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Standard or inverted pseudo-random bitsequences(PRBS) |
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Selectable |
2^9-1,2^11-1,2^15-1,2^20-1,2^23-1 |
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Programmable word |
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Selectablelength |
1 to 16bit |
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Error insertion |
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Error types |
Bit errors,code errors(for all line codes) |
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Trigger types |
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