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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Speech switch for APD system
 Hartmann, Lukáš ; Götthans, Tomáš (referee) ; Frýza, Tomáš (advisor)
This work describes design device that is used to connect voice speech lines in underground mines for APD system. Using the device, you can connect up to 60 speech lines up to sixteen independent communication group (circles). Each communication circle can be listen in by the operator, or he can initiate call from control board. Switching of individual lines is controlled using the utility on the computer that communicate with this device via serial port RS-485.
Detailed record
Speech switch for APD system
 Hartmann, Lukáš ; Götthans, Tomáš (referee) ; Frýza, Tomáš (advisor)
This work describes design device that is used to connect voice speech lines in underground mines for APD system. Using the device, you can connect up to 60 speech lines up to sixteen independent communication group (circles). Each communication circle can be listen in by the operator, or he can initiate call from control board. Switching of individual lines is controlled using the utility on the computer that communicate with this device via serial port RS-485.
Detailed record

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