JP4353769B2 - デジタル無線伝送装置の伝送系切換方法 - Google Patents
デジタル無線伝送装置の伝送系切換方法 Download PDFInfo
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- JP4353769B2 JP4353769B2 JP2003369491A JP2003369491A JP4353769B2 JP 4353769 B2 JP4353769 B2 JP 4353769B2 JP 2003369491 A JP2003369491 A JP 2003369491A JP 2003369491 A JP2003369491 A JP 2003369491A JP 4353769 B2 JP4353769 B2 JP 4353769B2
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- 230000005540 biological transmission Effects 0.000 title claims description 177
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 description 18
- 230000002159 abnormal effect Effects 0.000 description 10
- 230000005856 abnormality Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 208000032368 Device malfunction Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Description
3:TF出力切換器 4:送信アンテナ装置
5:1号系デジタル変調部 6:2号系デジタル変調部
7:1号系送信周波数変換部 8:2号系送信周波数変換部
9:運行室監視盤 10:無中室監視盤
Claims (2)
- 同期の現用の伝送系が同期の予備の伝送系に出力する同期パルスに従って、周期的かつ
前記同期パルス出力時に挿入された非放送信号を放送信号に重畳して生成した伝送信号を
、前記同期の現用及び前記同期の予備の伝送系が同一のタイミングで伝送し、出力の予備
の伝送系を現用系に切り換える手段を有し、出力の現用の伝送系で伝送された前記伝送信
号を送信するデジタル無線伝送装置の伝送系切換方法において、
同期の現用かつ出力の現用の伝送系の前記同期パルスが乱れたとき、前記同期パルスの出
力を前記同期の現用かつ出力の現用の伝送系が停止し、前記同期パルスの停止後、前記同
期の予備の伝送系が同期の現用の伝送系への切換を直ちに行い、前記同期パルスが停止し
てから同期パルスの周期以上の所定時間経過後、出力の現用の伝送系が出力の予備の伝送
系への切換を行うことを特徴とするデジタル無線伝送装置の伝送系切換方法。 - 請求項1記載のデジタル無線伝送装置の伝送系切換方法において、
前記出力の予備の伝送系のアラーム発報を出力の両伝送系の切換が完了後に行うことを特
徴とするデジタル無線伝送装置の伝送系切換方法。
Priority Applications (1)
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JP2003369491A JP4353769B2 (ja) | 2003-10-29 | 2003-10-29 | デジタル無線伝送装置の伝送系切換方法 |
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JP2003369491A JP4353769B2 (ja) | 2003-10-29 | 2003-10-29 | デジタル無線伝送装置の伝送系切換方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005136641A JP2005136641A (ja) | 2005-05-26 |
JP4353769B2 true JP4353769B2 (ja) | 2009-10-28 |
Family
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JP2003369491A Expired - Fee Related JP4353769B2 (ja) | 2003-10-29 | 2003-10-29 | デジタル無線伝送装置の伝送系切換方法 |
Country Status (1)
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JP (1) | JP4353769B2 (ja) |
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2003
- 2003-10-29 JP JP2003369491A patent/JP4353769B2/ja not_active Expired - Fee Related
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JP2005136641A (ja) | 2005-05-26 |
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