An inspection of key parameters of a product is carried out with use of an equivalent of loading of 50 Ohms, by adaptations FOR CHECK (the appendix, gages and control (the appendix according to the scheme of electric check of a product (the appendix.
In the last cycle at the top and lower value temperatures are taken by parameters, without extraction of a product from a chamber. Hold time of a product in the included state has to be minimum necessary for measurement of parameters.
The product is considered passed tests for durability at impact of sinusoidal vibration in the normalized range of frequencies if at external survey after tests it is not revealed mechanical damages and value of parameters of a product satisfactory.
Test for durability at influence of blows of repeated action is carried out for check of ability of a product to resist to the destroying action of repeated blows, to carry out the functions and to keep parameters within norms, after influence of repeated blows.
temperature in a chamber is increased to (40C within 1-3 hours. Relative humidity during this period has to be not less than 95%. During this process of temperature increase on a product moisture condensation has to take place;
1 carry out an inspection of a product with a product 1E59 on above to the given technique. In a chamber of cold maintain temperature 273 K (0 °C), in heat chamber – 323 K (+50 °C). Duration of checks makes 3 days.
The product is considered passed test for durability at transportation if after influence of mechanical blows of value of its functional parameters are in limits of norms, and at survey it is not revealed mechanical damages.
during the subsequent 4-9 h temperature in a test chamber is lowered to 25C. During this period relative humidity of air should not be lower than 95%. The last value of temperature and humidity are maintained before the termination of a cycle.
The product is tested in the switched-off state, at influence of 100000 blows with peak shock acceleration 147 and duration of action of shock acceleration of 6 ms. The determined number of blows is distributed equally in three mutual and perpendicular directions.
The product is placed in a chamber, included and take measurement of parameters, in normal conditions. The product is switched off. Install the ambient temperature, equal minus 60C in the camera, and maintain a product to the given temperature for cooling it on all volume during 24 h.
Install the ambient temperature, equal minus in the camera 50C. The product is maintained in the switched-off state during 2-3 h., then the product is included and take measurement of parameters. The product is switched off.
Test for durability when falling is carried out for check of ability of a product to resist to the destroying action of a free fall and impact with firm surfaces, to carry out the functions and to keep parameters within norms, after impact of falling and impacts.
Tests for durability at impact of sinusoidal vibration carry out for check of ability of a product to resist to the destroying vibration action, to carry out the functions and to keep parameters within the norms specified after impact of vibration.
The product is considered passed test if in the specified range of frequencies there is no increase twice and more than amplitude of movement of separate parts and constructive elements of a product in comparison with amplitude of fluctuations of points of fastening.
1 product is switched off and take batteries. A product consider the sustained check if after 10 days of continuous work its parameters conform to requirements of design documentation.