This standard specifies the data format that shall be used for both required and optional data available at the output of radiation measurement instruments that are used for homeland security applications. The performance requirements for these types of radiation measurement instruments are described in other standards such as ANSI N42.321, ANSI N42.33, ANSI N42.34, ANSI N42.35, ANSI N42.38, ANSI N42.43, ANSI N42.48, ANSI N42.49A, and ANSI N42.53. The output consists of measurement data and results of any analysis performed by the radiation measurement instrument. This standard does not address instrument control, data transmission protocols, or the physical media used for communications.