This part of CISPR16 specifies the characteristics and performance of equipment for the measurement of radio disturbance in the frequency range 9kHz to 18GHz. In addition, requirements are provided for specialized equipment for discontinuous disturbance measurements. NOTE In accordance with IECGuide107 , CISPR16‑1‑1 is a basic EMC standard for use by product committees of the IEC. As stated in Guide107, product committees are responsible for determining the applicability of the EMC standard. CISPR and its sub-committees are prepared to co-operate with product committees in the evaluation of the value of particular EMC tests for specific products. The specifications in this standard apply to EMI receivers and spectrum analyzers. The term “measuring receiver” used in this standard refers to both EMI receivers and spectrum analyzers. Further guidance on the use of use of spectrum analyzers and scanning receivers can be found in AnnexB of any one of the following standards: CISPR16‑2‑1 , CISPR16‑2‑2 or CISPR16‑2‑3 .