Find the most up-to-date version of JSA – JIS Z at Engineering JIS Z Standard conditions of the test site. Standard Atmospheric Conditions for Testing 1. This standard application range, the temperature of the . JIS Z Standard atmospheric conditions for testing (FOREIGN STANDARD). standard by Japanese Industrial Standard / Japanese.

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Further, the constant temperature chamber shall be so constructed that the chamber does not receive the heat radiation directly from the heat source of the test specimen. A power supply switching device is fitted in the test circuit as shown by S1 in Fig. Type B and Type C Impressing at operating portion tests These are the tests assuming the case that electrostatic discharge occurs a manual operating portion where the driver may have frequently to touch and the equipment malfunctions and bum out damage.

Number of impressions is specified as 3 times or more, but about 10 times are desirable. The voltage, however, will be kept at about 18Vwhile the electrolyte remains, The A method is set considering this situation.

Take the test specimen out of the chamber, then keep it for 2 hours or more under room temperature, test it according to 5. Further, as for the intensity of interference magnetic field for tests by means of magnetic fields, the test method alone is specified due to the lack of adequate date to establish a standard. The differences between the JIS C and JIS C are that the former is a test in which mist is continuously sprayed, while the latter is a cycle test in which mist spraying and stopping it are altertively repeated, for the provision for the old JIS Cit was decided to refer the JIS C Progressed with a great variety of electronic devices in recent years, such equipments have increased that give and receive information with drivers through switches, keyboards or visual displays.

However, since there was not any testing specified in this standard, the minor deviation of testing voltage at which is important, it was decided to provide a provision to specify that the testing voltage shall be applied, which shall be monitored so as to be correct by means with any voltmeter of accuracy in the class of 0.

Some examples are given below for reference of temperature setting for these equipment. This test, therefore, aims to evaluate the electromagnetic environmental resistance by way of the design standard to protect equipment and to ensure functions of equipment from such troubles. Typical values of the former are as follows, and constants of parts of the test circuit are specified based on them: Results of the study on electrostatic charged voltages of passenger car drivers in winter Fig.

Then take the test specimen out of the chamber ,place it immediately in the constant temperature chamber adjusted to the high temperature specified in Table 12 keep it in the chamber for the time specified in Table Type of tests are classified into conducted and radiated electromagnetic environments according to the propagation paths against troubles such as interferences, etc.

Foregoing results are, however, obtained on bench assembled tests, and it was confirmed that only the lower transient voltage would occur on vehicle tests as compared with bench tests.


Type C and Type F Of above classified various transient voltages, the tests cover 5 ; that is, the resistance against mutual interference caused by inductive and capacitive combination between loading lies that are loaded in an operation of equipment, radiated electric noise interference from the magnetic inductive interference caused by alternator, ignition systems high tension codes, spark plug etc.

Should so wide range of difference of temperatures be specified, it would be regarded as a kind of thermal shock test.

In the necessary case, the testing conditions severity of the shock, height of drop, etc. Number of impressions is 88703 as 3 times or more, but about 10 times are desirable, impressing may be done not only between the earth terminal and all other terminals but alsoif necessarybetween each terminal and the case, and in particular case test conditions test voltage, applying period, number of impressions may otherwise be specified under agreement between the persons concerned.

B-1 is a test against the transient voltage discharged from the field coil to the loading side when the ignition switch is opened in the 12V system. Equipment subject to electrostatic test Although kinds of equipment subject to Type A through Jie C electrostatic tests are basically left to the agreement between the perties concerned, some examples ate given in Explanatory Table 2 for reference taking account of the degree of effects on the vehicle when the equipment have occurred abnormalities.

Explanatory note on JASOD Jie rules of environmental testing methods for automotive electronic equipment This explanatory note has been issued for a purpose to explain the matters specified in the text of this standard and any matter relating thereto, which shall not be any part of this standard.

Therefore care must be taken, for condensers in particular, since the Indicated and actual capacities of condensers are qpttodiffer each other. S to the previous provision, a resistance of 2 ohms or diode had been required to be inserted in the transient voltage generating circuit of the power supply system between the power source and the test specimen. Equipment uis to transient voltage test Although kinds of equipment subject to Type A through Type F transient voltage tests are basically left to the agreement of the parties concerned, some examples are given below for the reference taking account of the degree of effects of jjis of devices on the vehicle when some abnormalities have occurred Explanatory Table 1.

The method for natural drop to be alternatively employed was specified so as to be simply applied, where 8730 little bit more severe condition than what is expected at usual handling was specified. However, the test 873 be carried out by means of the method as specified hereunder: Results of the study on charged electrostatic voltages of line workers of the automobile manufacturer in winter Fig.

In addition, the test apparatus for 14KHz to 30MHz frequency range electric fields may be the parallel strip line Explanatory Fig. A power supply device, input device s and loading devices s. Points revised of individual provision and supplemental explanation thereof 3.

Most jos the equipments will not cause any trouble with the class 1 test voltage for the normal and cold area specifications, but the class 2 voltage shall be used under the agreement between the persons concerned when the effect of engine frictions, etc.


Kind of dust of JIS Z subject to selection of kind of x test to be carried out being made in accordance with the agreement made by and between the persons concerned.

JIS Z – Standard atmospheric conditions for testing (FOREIGN STANDARD)

Since under such condition, the generation of transient voltage is limited to be kept so low that the test condition be made more relaxed, the resistance has been decided to be specified so to be directly connected with the power source and the test specimen. Appearance and other conditions of the test equipment at that time shall. However, since JIS K is the standard to specify the testing the testing the physical properties of sulfurized rubber, only the provision for jiss oil was referred in those standards and in respect of the method of testing, a unique method newly developed to judge whether the test shall be required or not and the testing conditions were specified, it is considered not necessary for the equipment to be installed inside car room to 87003 immersed in oil.

Thereaftersuccessively record the characteristics of the equipmentaccording to above mentioned 1 or 2.

JIS Z 8703:1983

Moreover, in case of the equipment in 24V system, two different kinds of the testing circuits on which the voltage shall be applied for a duration of time so long as equal to 60 times shall be constructed, subject to the voltage condition being same as it of 5.

However, voltages that are induced and impressed by transient voltages and electro-magnetic disturbances are not included. Regarding above operations as one cycle refer to Fig. B-2 is a test against the transient voltage which generates when the induction loads relay, solenoid, etc. Of above mentioned transient voltages.

Thereforefor the each, the general method to be applicable to electronic equipment for automobile has been specified as a representative requirement. JIS C Basic environmental testing procedures pare 2: This standard is desirable to be applied to motorcycles, if possible, although the environmental conditions of motorcycles are not always the same as four wheelers. From the results above mentioned, this electromagnetic resisting characteristics test using TEM cell is useful as a test method to evaluate the operation of an electronic equipment unit under specific condition of lead wire connection, but conducted electromagnetic test that examine the effects of connecting lead wire, wiring, etc.

Type E 4 Transient voltages generated when various inductive loads relay, solenoid, etc. Further, carry out the test pattern specified in Fig. In case where no abnormality is found after applying the test may be stopped. Particularly the impressing direction of electric field, the fitting direction of the test specimen for instance, the surface to be faced toward the ground of a specimen shall be faced jiz the outer conductive surface of the 803 celletc.