NEBS认证测试用例.docx

1、NEBS认证测试用例NEBS认证测试用例1. Environmental Test（GR-63-CORE）1.1. Temperature, Humidity, and Altitude CriteriaThis section provides criteria and test methods for temperature, humidity, and altitude robustness of network equipment. The criteria cover the following: Transportation and storage environments Ope

2、rating temperature and humidity environments Altitude Heat dissipation Equipment airflow Equipment may be tested in the following configurations: Frame-level A fully-loaded equipment frame or frames, or a single equipment shelf more than 36 inches in height. Shelf-level A single equipment shelf less

3、 than or equal to 36 inches in height.1. General Testing RequirementsDuring the operational tests the equipment shall operate, using as many functions as deemed practical. For the non-operating tests, the equipment shall be tested for operability before and after each test. The operational state of

4、the equipment shall simulate the configuration for actual service conditions. The criteria for assessing functionality shall be included in a written test plan. The criteria depend on the service provided by the equipment being tested, and are determined by applying appropriate Telcordia generic cri

5、teria, or, if none exists, by the suppliers or purchasers performance specifications. All tests shall be conducted in a thermal chamber capable of producing the temperature and humidity conditions given in the test procedure. For operational tests on products cooled by forced air, the thermal chambe

6、r volume should be at least 5 times the volume of the equipment under test. For operational tests on products cooled by natural convection, the thermal chamber volume shall be at least 5 times the volume of the equipment under test, and the airflow near the equipment space shall not exceed 1m/second

7、. Chamber airflow velocity can be assessed prior to insertion of equipment under test.Temperature and humidity sensors shall be calibrated for the ranges of temperature and humidity expected during the test, and shall be capable of measuring with sufficient accuracy to ensure the tolerances in the p

8、rocedure are satisfied.All powering, interfacing, and monitoring equipment that is not part of the equipment being tested should be located outside the chamber.2. TolerancesUnless otherwise specified, the temperature shall be maintained within 3C, and the relative humidity within 3%. Dwell time dura

9、tions specified in test methods are minimums and may be extended.3. Ambient Temperature/Relative Humidity Unless otherwise specified, ambient temperature is defined as a temperature between 20C (68F) and 30C (86F) and ambient relative humidity is defined to be a relative humidity between 5% - 85%.4.

10、 Temperature GradientIn the thermal tests below, the maximum cooling gradient is specified at 30C/hr (54F/hr). The maximum heating gradient is specified at 96C/hr (173F/hr). Thermal chambers shall be capable of achieving this gradient over the specified temperature range.5. Test ReportA written test

11、 report shall verify that the test was conducted properly and that the equipment functionality was maintained. The test report shall include a description of the test chamber in terms of the appropriate requirements and objectives, and shall incorporate the following information: Sketches or photos

12、of the test configuration A description of the equipment under test and the service it provides The criteria for assessing functionality, including the required functionality at both the normal and short-term operating conditions for operating temperature and humidity tests. NOTE: For operating temp

13、erature and relative humidity testing, core or critical functions must be maintained at the short-term operating conditions. Any designed reduction in equipment functionality at the short-term operating conditions must be justified in the test report. Full equipment functionality must self-restore w

14、hen the temperature or humidity return to the normal range. All temperatures (including internal equipment temperatures), humidity conditions, and functionality data (including any calculations) A description of any hardware or software failures, plus a list of all replacements that were made, if an

15、y.1.1.1. Transportation and Storage Environmental CriteriaDuring transportation or in storage, equipment may be exposed to extremes in ambient temperature and humidity. The criteria in this section apply to equipment in its normal shipping container. After the equipment is exposed to the given envir

16、onment, it is returned to ambient, unpackaged and operated. Conformance is based on the equipments ability to operate as intended when returned to ambient conditions.The equipment does not operate during these tests, but appropriate functionality measurements should be made on equipment before and a

17、fter each test or sequence of tests. Packaged equipment should be used in these tests. If, for some reason, this is not possible (e.g., the packaging is not available), these tests may be conducted on unpackaged equipment, provided that the Packaging can be reasonably assumed not to influence the te

18、sting results, and Packaging will itself resist the temperature and humidity package stresses. Packaging that includes a moisture barrier should always be included in the high humidity and low temperature exposure and shock tests because such barriers affect product conformance for these tests.NOTE

19、1 Tests may be performed sequentially on a single sample or parallel.NOTE 2 If the likelihood of nonconformance from a given test is small, a sequence of several tests may be performed before the equipment operational test is performed. However, if a nonconformance occurs, the tests will have to be

20、repeated to determine which environment caused the nonconformance. NOTE 3 If testing sequentially on a single sample, the suggested test sequence is low temperature exposure and thermal shock, followed by high humidity exposure, and finally high-temperature exposure and thermal shock. Adequate time

21、for product recovery after the shocks should be allowed. This will permit the equipments temperature to moderate, and any resulting condensation to evaporate, before performing the equipments functionality test or continuing the package test sequence.NOTE 4 For transportation and storage methods, te

22、st sample insertion into a chamber kept at the specified extreme environments is permitted if a manufacturer agrees to this method. The exposure duration shall be extended to include the omitted ramping time provided in this document.1.1.1.1. Low-Temperature Exposure and Thermal ShockThe packaged eq

23、uipment shall not sustain any damage or deteriorate in functional performance after it has been exposed to the environment described in Table 1-1.Table 1-1 Low-Temperature Exposure and Thermal ShockTest Sequence :1) Make initial equipment functionality test at ambient temperature and humidity level.

24、 2) Package the equipment and place it into the test chamber. (Do not operate the equipment during the test.)3) Monitor the chamber temperature continuously during the test.4) Decrease the chamber temperature, at a rate of about 30C/hr (54F/hr) to -40C (-40F). 5) Maintain a temperature -40C (-40F) f

25、or a minimum of 72 hours.6) Administer the thermal shock by increasing the chamber temperature (or removing the equipment from the chamber) from -40C (-40F) to ambient in less than 5 minutes. (Use appropriate personal protective equipment when handling the package.) 7) Perform a post-test equipment

26、functionality check after the equipment has recovered at ambient temperature and humidity.Figure 1-1 Low-Temperature Exposure and Thermal Shock1.1.1.2. High Relative Humidity ExposureThe packaged equipment shall not sustain any damage or deteriorate in functional performance after it has been expose

27、d to the environment described in Table 1-2.Table 1-2 High Relative Humidity ExposureTest Sequence :1) Make initial equipment functionality test at ambient temperature and humidity level. 2) Package the equipment and place it into the test chamber at 23C (73F) and 50% RH. (Do not operate the equipme

28、nt during the test.)3) Monitor the chamber temperature and RH continuously during the test.4) Increase the chamber temperature, at a rate of 30C/hr (54F/hr) to 40C (104F). 5) While holding the chamber at 40C (104F), transition the chambers RH to 93%. This RH shall be achieved in 2 hours.6) Maintain

29、a temperature 40C (104F) and a RH of 93% for at least 96 hours.7) While holding the chamber at 40C (104F), transition the chambers RH to 50%. This RH shall be achieved in 2 hours.8) Transition the chamber to 23C (73F) at a rate of 30C/hr (54F/hr) while maintaining 50% RH.9) Perform a post-test equip

30、ment functionality check after the equipment has recovered at ambient temperature and humidity.Figure 1-2 High Relative Humidity Exposure1.1.1.3. High-Temperature Exposure and Thermal ShockThe packaged equipment shall not sustain any damage or deteriorate in functional performance after it has been

31、exposed to the environment described in Table 1-3.Table 1-3 High-Temperature Exposure and Thermal ShockTest Sequence :1) Make initial equipment functionality test at ambient temperature and humidity level. 2) Package the equipment and place it into the test chamber.(Do not operate the equipment duri

32、ng the test.)3) Monitor the chamber temperature continuously during the test.4) Increase the chamber temperature, at a rate of 30C/hr (54F/hr) to 70C (158F). 5) Maintain a temperature 70C (158F) for a minimum of 72 hours.6) Administer the thermal shock by decreasing the chamber temperature (or removing the equipment from the chamber) from 70C (158F) to ambient in less than 5 minutes. (Use appropriate personal protective equi