| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal amplifier capable of simply and exactly performing adjustment according to installation statuses. SOLUTION: The signal amplifier 1 for amplifying a signal has an input ATT 4, a GC 6 and an output ATT 9 which amplify or adjust the signal and an adjustment control part 20 which determines an adjustment value to adjust the input ATT 4, the GC 6 and the output ATT 9 and outputs an adjustment signal according to the adjustment value to the input ATT 4, the GC 6 and the output ATT 9. In addition, the signal amplifier 1 has a connection terminal 22 which accepts input of an input level and an output level and the adjustment control part 20 determines the adjustment value based on the input level and the output level accepted by the connection terminal 22. COPYRIGHT: (C)2007,JPO&INPIT
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