Methods are established for performance testing, calibration, and use of sodium iodide detector systems for the measurement of gamma-ray emission rates of radionuclides, assay for radioactivity, and the determination of gamma-ray energies. Both energy calibration and efficiency calibration are covered. Three techniques are considered: total spectrum counting, which employs a system that counts all events above a low-energy threshold; single-channel analyzer counting, which employs a system with a counting window that establishes upper and lower energy boundaries; and multichannel analyzer counting, which employs a system utilizing multiple counting windows.

The overall level of performance that may be achieved by any computer system is determined, in large part, by the system bus that is used to effect communication between the various system elements. System performance characteristics, measured in terms of speed, reliability, suitability to a variety of purposes, and adaptability to changing technology are ultimately dependent on the particular bus structure that is used and its associated protocols.This standard defines the IEEE Std 1000 Bus, which may be used to implement general purpose, high-performance 8-bit microcomputer systems. Such a system may be used in a stand-alone configuration, or in larger multiple-bus architectures, as a private (or secondary) bus or a high-speed I/O channel. This standard is applicable to those systems and system elements with the common commercial designation STE Bus. It is intended for those users who plan to evaluate, implement, or design various system elements that are compatible with the IEEE 100...