TWO-WAY AMPLIFIER, TWO-WAY COMMUNITY RECEPTION SYSTEM, AND CONFLUENT NOISE INSPECTION METHOD FOR THE SYSTEM

PROBLEM TO BE SOLVED: To identify a noise source of a confluent noise without interrupting transmission of an incoming signal. SOLUTION: An uplink amplifier 28 amplifies an uplink signal and outputs the amplified signal to a center device. An uplink signal from a terminal is fed to the uplink amplif...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	YAMADA KATSUTO
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION TRANSMISSION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To identify a noise source of a confluent noise without interrupting transmission of an incoming signal. SOLUTION: An uplink amplifier 28 amplifies an uplink signal and outputs the amplified signal to a center device. An uplink signal from a terminal is fed to the uplink amplifier 28 through terminals 20a to 20d. A variable attenuator 40 is provided for each of the terminals 20a to 20d. In the variable attenuator 40, a changeover switch 46 selects a non-attenuation state, an attenuator 42 with a 5dB attenuation state, or an attenuator 44 with a 20dB attenuation state.