| 摘要 |
PROBLEM TO BE SOLVED: To provide the communication cable for maintenance which effectively suppresses the generation of noise accompanying the connection of the communication cable at the time of maintenance and never damages an object device to be maintained. SOLUTION: The communication cable 7 for maintenance is equipped with a transmission line 73 which transmits data sent from a base station panel 3 to be maintained, a reception line 74 which transmits data to be received by the base station panel 3, an inter-ground connection line 75 which electrically connects the ground of the base station panel 3 and the ground of a tool 6 for maintenance, connectors 70 and 71, and a GND terminal 72 connected to the inter-ground connection line 75. When the base station panel 3 and tool 6 for maintenance are connected by the communication cable 7 for maintenance, the connector 71 is connected to the tool 6 for maintenance first and then the GND terminal 72 is connected to a frame 10 on the side of the device to be maintained to connect the ground of the maintenance object side and the ground of the maintenance tool side together through the frame 10. Then the connector 70 is connected to the side of the base station panel 3. |
