| 摘要 |
PURPOSE:To enable high density loading of a channel converter of VX1X12 system, by preventing excessive power consumption and reducing heating, through a decreased voltage applied to circuits handling comparatively small power with specific connections. CONSTITUTION:A voltage applied to circuits handling comparatively small power in a channel converter of a VX1X12 system is reduced. That is, high potential power supply terminals and low potential power supply terminals of a channel modulator 3 and a channel demodulator 5 are respectively connected out of a premodulator 1, the channel modulator 3, a signal tone transmission circuit 4, the channel demodulator 5, a predemodulator 7, and a signal tone demodulator 10. Further, the high potential power supply terminals and the low potential power supply terminals of the premodulator 1, the signal tone transmission circuit 4, the predemodulator 7 and the signal tone demodulator 10 are respectively connected. Moreover, the low potential power supply terminals of the former and the high potential power supply terminals of the latter are connected (an intermediate potential point 15), the high potential power supply terminal of the former is connected to a ground terminal 14 and the low potential power supply terminal of the latter is connected to a power supply terminal 13. |
