Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Measurement Service For High-Power Cfv WATTMJ3TERS At The National Institute Of Standards And Technology.
Author: Jeffrey A. Jargon, Gregorio Rebuldela
Source: 1993 Measurement Science Conference
Year Published: 1993
Abstract: In response to recent interest and demand for accurate high-power calibrations, the National Institute of Standards and Technology has established a measurement service for high-power continuous wave (cw) wattmeters. The automated calibration system operates at power levels of 1 to 1000 W for frequencies from 1 to 30 MHz and 1 to 500 W for 30 to 400 MHz. The high-power source is calibrated using a transfer standard, which was calibrated using a cascaded coupler technique that is traceable to a 10 mW standard. Wattmeters are calibrated directly against the high-power source and must meet the following specifications: an IEEE- 488 inlerface bus, a type N male input .connector, and either a type N female output connector or an attached load.. At each measurement point the calibration faktor is defined as the ratio of the wattmeters indication to the power incident on it. Systematic uncertainties are due to the high- * Contribution of NIST, not subject to copyright in the United States. power source calibration factors, instability of the source, resolution of the wattmeter, and reflection coefficient measurements. Random uncertainties are due to connector repeatability of the devices, environmental effects, long term system variations and system noise. The measurement uncertainty is less than plus or minus two percent and is dependent on the frequency and power le

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.