| 摘要 |
PURPOSE:To use only a desired device to operate the titled system without giving any effect to other devices even though the power supply of a device under an unused state is turned off, by providing a switch part which connects and disconnects a signal line. CONSTITUTION:Plural devices 3 are connected to a standard digital interface GPIB cable 4 to form an interface bus control system. A switch part 5 interlocks a power supply switch 6 of the device 3 and connects and disconnects a signal line of a GPIB bus connector part in response to ON and OFF of the switch 6 respectively. Therefore the signal lines between the part 2 and transceiver bus control parts 1A and 1B are cut simultaneously by the part 5. As a result, it is possible to operate the system only with a desired device without affecting other devices although a device having a turned-on power supply is connected to a device having a turned-off power supply via a GPIB cable 4 and through the connector part 2. |
