IEEE ANSI C63.17-1998 pdf download American National Standard for Methods of Measurement of the Electromagnetic and Operational Compatibility of Unlicensed Personal Communications Services (UPCS) Devices
1. Introduction
1.1 Scope
This standard sets forth uniform methods of measurement of the electromagnetic and operational compati- bility of unlicensed personal communications services (UPCS) devices. This standard does not cover licensed personal communications services (PCS) devices. The recommended methods described are appli- cable to the radio transmitter and monitoring devices contained in the UPCS device. These methods apply to the measurement of individual UPCS devices. Additional methods may be added to this standard to fulfill future requirements.
In addition to the measurements specified herein, UPCS devices may also be required to be tested in accor- dance with other standards. Examples are listed in Annex A.
1.2 Applications
The procedures given herein may be used to test UPCS devices permitted under 47 CFR 15, Subpart D. The emissions and operational characteristics of UPCS devices are the basic parameters affecting UPCS coexistence with other electronic devices and systems. In particular, compliance with this standard may be used to demonstrate electromagnetic compatibility with other isochronous and asynchronous UPCS systems, the private operational/fixed microwave services systems, and other systems operating in the same and adjacent frequency bands.
This standard describes preferred test methods and facilities and, in some cases, alternative test methods and facilities. If these methods and facilities do not apply to the equipment under test (EUT), the manufacturer shall explain why and shall provide an alternative test procedure that has been approved by the applicable regulatory agency. If alternative test methods or facilities are employed, every effort should be made to establish a correlation with the preferred methods or facilities.
Where the word shall is used in this document, it indicates something that is mandatory for compliance with this standard. The word should indicates something that is advisory only.
1.3 Road map to the standard
The tests for UPCS devices fall into two categories. The first category includes the traditional radio fre- quency (RF) measurements of radiated power, emission mask, power spectral density, etc. These tests are given in Clause 6 of this document. The second category includes tests for the channel monitoring and access requirements unique to UPCS devices. These requirements are sometimes collectively referred to as the spectrum etiquette. The associated tests are described in Clauses 7 and 8 of this document, and they relate to Sections 15.321 (asynchronous devices) and 15.323 (isochronous devices) of 47 CFR 15, Subpart D. These sections of 47 CFR 15, Subpart D, require that a UPCS device monitor the received RF power level on the intended transmit channel 1 before transmitting, and provide criteria that the monitored power level shall satisfy to allow the device to transmit on that channel. The tests in Clauses 7 and 8 are designed to verify compliance with these requirements. Annex A provides a table showing the sections in 47 CFR 15, Subpart D, that correspond to the tests in this standard.