JPS55619A - Transmission monitor system - Google Patents
Transmission monitor systemInfo
- Publication number
- JPS55619A JPS55619A JP7206978A JP7206978A JPS55619A JP S55619 A JPS55619 A JP S55619A JP 7206978 A JP7206978 A JP 7206978A JP 7206978 A JP7206978 A JP 7206978A JP S55619 A JPS55619 A JP S55619A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- amplifier
- output
- circuit
- monitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE: To avoid the non-operation due to the lowering of the transmission output level in the transmission monitor system of the power line protecting carrier terminal equipment by adding both the multiplier and the integrator to the transmission monitor circuit and then carrying out the monitor for the input/output signals of the transmission amplifier.
CONSTITUTION: The output signal of transmission circuit 1 is sent to hybrid transformer 5 via transmission amplifier 2 and then transmitted to the line via line filter 6 and insulating transformer 7. Here the transmission monitor is carried out via the signals which are sent through integrator 9 and multiplier 8 supplying the output of circuit 1 and amplifier 2 plus the reception output of transformer 5 in the form of the input. At the same time, the fault of amplifier 2 is decided through 2nd transmission monitor circuit 10.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7206978A JPS55619A (en) | 1978-06-16 | 1978-06-16 | Transmission monitor system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7206978A JPS55619A (en) | 1978-06-16 | 1978-06-16 | Transmission monitor system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55619A true JPS55619A (en) | 1980-01-07 |
Family
ID=13478735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7206978A Pending JPS55619A (en) | 1978-06-16 | 1978-06-16 | Transmission monitor system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55619A (en) |
-
1978
- 1978-06-16 JP JP7206978A patent/JPS55619A/en active Pending
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