NL-42 / NL-52

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3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, MANUALSound Level MeterNL-42 / NL-52iOrganization of the NL-42 / NL-52 documentationDocumentation for the Sound Level Meter NL-42 / NL-52 comes in three parts, as listed below. Instruction Manual (this document)Describes operating procedures for the Sound Level Meter NL-42 / NL-52 , connection and use of peripheral equipment such as a level recorder and printer, and use of the memory card. Serial Interface ManualDescribes communication with a computer, using the serial interface built into the Sound Level Meter NL-42 / NL-52 . The manual covers the com-munication protocol, use of control commands for the sound level meter, format of data output by the sound level meter, and other topics.

iii Organization of this manual This manual describes the features, operation and other aspects of the Sound Level Meter NL-42/NL-52. If the unit is used together with other equipment to confi gure

  Nl 42 nl 52