IS 9000 : Part 6 : 1978 Basic environmental testing procedures for electronic and electrical items: Part 6 Composite temperature/humidity cyclic test

0. FOREWORD

0.1 This Indian Standard (Part VI) was adopted the Indian Standard Institution on 28 April 1978, after the draft finalized by the Environmental Testing Procedures Sectional Committee had been approved by the Electronics and Telecommunication Division Council.

0.2 A composite temperature/humidity cyclic test (moisture resistance test) is designed to reveal defects in test items caused by breathing as distinct from the absorption of moisture. This test differs from other cyclic damp heat tests in that it derives its increased severity from:

a) the greater number of temperature variations or pumping actions in a given time;

b) the greater cyclic temperature range;

d) the inclusion of a number of excursions to sub-zero temperatures; and

e) the inclusion of vibration conditioning, if required.