The selection logic circuit is operated by the received WS-Rx-ALM or RMT-CONT signals, or by manual control. ... switch is in either REG or PROT position, or the PROT-MAINT or REG-MAINT switch is set to MAINT position, the MAINT indicator lights up and restrains the alarm signal. ... The input DSC data signal is converted into a distinct TTL level by a photo- coupler and fed to the stuff control circuit.
|Title||:||Digital Microwave Communication Systems|
|Author||:||P. V. Sreekanth|
|Publisher||:||Universities Press - 2003|