JJG 776-2014Verification Regulation for Microwave Radiation and Leakage Energy Measuring Instruments (English PDF)

1 Scope (1)

2 Overview (1)

3 Metering performance requirements (1)

4 General Requirements (1)

5 Control of measuring instruments (1)

Introduction

The regulations refer to international standards IEEEStd1309-2005, IEEEStandardforCalibrationofElec-tromagneticFieldSensorsandProbes, ExcludingAntennas, from9kHzto40GHz be prepared by. The standard is based on the current major international calibration laboratories electromagnetic field probe and sensor calibration.

The procedures in place JJG 776-92 "Microwave radiation and leakage measurement instrument." The version with procedures and JJG 776-92 Than the power density of the device used in the device varies. In addition, the test frequency limit extended to 18GHz, for Verification also in the basic range of minor changes to the (0 ~ 1) mW/cm2 as the basic range of the test, if the subject Instrument range than 1mW/cm2, the increase (1 ~ 3) mW/cm2 power density of the measurement values.

The previous versions of the release JJG 776 case.

--- JJG 776-1992.

Microwave radiation and leakage meter

1 Scope

This procedure is applied for the first time in the operating frequency range of 915MHz ~ 18GHz microwave radiation leakage and measuring instrument Test, test and subsequent use of checks.

2 Overview

Microwave radiation and leakage meter is used to measure radiation and microwave equipment microwave energy leaking to the space instruments.

Microwave probe of the electromagnetic field sensitive element, can be directly converted microwave signal into a DC signal, the indicator value.

3 metering performance requirements Frequency range. 915MHz ~ 18GHz;

Power density measurement range. (0 ~ 3) mW/cm2;

Power density measurement maximum permissible error. ± 2.75dB.

4 General technical requirements it should be the subject instrument manufacturer, instrument name, instrument model, serial number and power requirements information. Microwave radiation and leakage measurement instrument control buttons, key switch, input and output ports should be clearly marked, and having a metering device A manufacturing license logo.

There should be no prejudice to the subject instrument readings and affect the normal mechanical damage, control knobs and buttons should be able to work properly for the display to show, all kinds of signs should be clear and complete; pointer instrument gauge needles should bend, mechanical meter Zero can be adjusted freely.

5 control of measuring instruments Controls include initial verification of measuring instruments, verification and subsequent use of checks.