H - Electricity – 04 – B
Patent
H - Electricity
04
B
340/76, 340/98
H04B 3/46 (2006.01) H04B 3/36 (2006.01) H04B 17/02 (2006.01)
Patent
CA 1136729
A B S T R A C T O F T H E D I S C L O S U R E Monitoring system for a forward and backward link equipped with two way repeaters-regenerators comprising a monitoring station and in said monitoring station means for sending through the forward link information data and a low frequency control signal and for receiving through said backward link information data and supervisory words respectively moni- toring the performance of the repeaters-regenerators and iden- tifying errors made therein. In each repeater regenerator a supervisory word is stored in a shift register and advance pul- ses for said shift resister are obtained by frequency division of the low frequency control signal. The supervisory word is completed by a start bit and a stop bit, then is used to modu- late the low frequency control signal and the modulated start stop supervisory word is sent to the monitoring station through the backward link. - 1 -
350177
Bertin Marcel R.
Boutmy Patrick E.
Le Fort Gilbert J.
Walraet Jean G.
Robic Robic & Associes/associates
Societe Anonyme de Telecommunications
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