| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication data recording device capable of safely recording communication data in a large capacity recording medium by making it possible to change charging wait time of a power supply backup capacitor, depending on power supply quality such as a power supply condition of an external power supply and an instantaneous interruption occurrence frequency, and continuing to fetch communication data as long as possible even after interruption of power supply depending on a communication protocol or communication speed. <P>SOLUTION: Communication data measurement means 5 continues to fetch communication data so that recording control means 7 can safely write the communication data from a first recording part 6 into a second recording part 8 on the basis of a communication condition of a target line stored in setting means 9, and records the data in the first recording part 6, even after interruption of power supply. The communication data measurement means 5 adjusts charge time of a power supply backup capacitor 2 by changing wait time, which is a period from restoration of power after the interruption until the communication data begins to be fetched, on the basis of a recording condition determined by a user considering external power supply status stored in the setting means 9. <P>COPYRIGHT: (C)2013,JPO&INPIT |
