This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of pyroelectric television cameras. This standard applies to cameras that use 26mm camera tubes and have an operating wavelength of 8 to 14μm and comply with GB 12647. GB/T 15302-1994 General Technical Requirements for Pyroelectric Television Cameras GB/T15302-1994 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB/T15302—94
Generic specification for pyroelectric television cameras
Promulgated on December 6, 1994
State Bureau of Technical Supervision
Implementation on July 1, 1995
National Standard of the People's Republic of China
Generic specification for
pyroelectric television cameras 1 Subject content and scope of application
GB/T15302—94
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of pyroelectric television cameras (hereinafter referred to as cameras).
This standard applies to cameras that use 26mm camera tubes and have an operating wavelength of 8~14μm and comply with the provisions of GB12647. 2 Reference standards
GB191 Packaging, storage and transportation graphic mark
GB2423.5 Basic environmental test procedures for electric and electronic products Test Ea: Impact test method
GB2423.8 Basic environmental test procedures for electric and electronic products Test Ed: Free fall test method GB2423.10 Basic environmental test procedures for electric and electronic products Test Fc: Vibration (sinusoidal) test method GB12322 Reliability test method for general-purpose application television equipment GB12647
General-purpose application television standard
GB14861 Safety requirements and test methods for application television equipment GB/T15303 Measurement method for pyroelectric television cameras 3 Terminology
3.1 Minimum detectable temperature difference minimum detectable temperature difference (MDTD) The temperature difference between the target and the background when the observer can just distinguish the large target (black body) from the background on the monitor screen. This parameter represents the sensitivity of the camera to target detection. 3.2 Minimum resolvable temperature difference (MRTD) The temperature difference between the test card and the background when the observer can just distinguish the test card of a certain spatial frequency from the background on the monitor screen. 3.3 Maximum spatial resolution (MSR) The maximum value of the spatial frequency that can be distinguished by the observer when the temperature difference signal between the test card and the background is at critical saturation. 3.4 Noise equivalent temperature difference (NETD) The temperature difference between the test card and the background when the ratio of the peak-to-peak value of the useful signal amplitude in the video signal to the effective value of the random noise is equal to 1. 3.5 Output signal outputsignal
The peak-to-peak value of the signal from the highest white signal level to the bottom of the synchronization pulse is called the signal amplitude. The video signal with high level corresponding to the hot area of ​​the target and low level corresponding to the cold area of ​​the target is called the positive polarity video signal. 3.6 Pyroelectric signal pyroeletricsignal The part of the video signal output by the camera increases due to the change of heat radiated to the target surface of the pyroelectric camera tube. Approved by the State Bureau of Technical Supervision on December 6, 1994, and implemented on July 1, 1995
4 Product classification
Cameras are classified according to their working modes:
a. Translation type;
b. Chopping type.
GB/T15302-94
Note: ① Translation working mode refers to the working mode in which the thermal image of the target moves on the target surface of the camera tube to generate infrared photoelectric signals. ② Chopping working mode refers to the working mode in which the thermal image of the target is radiated intermittently on the target surface of the camera tube by mechanical means to generate infrared photoelectric signals.
5 Technical requirements and test methods
5.1 Appearance and structure
5.1.1 Requirements
The appearance of the camera should be free of obvious mechanical damage, peeling, scratches, and rust of the coating layer. The logos, texts, and symbols on the panel should be clear. Plastic parts should not have blistering, cracking, deformation, and the injection material should not overflow. The control mechanism should be flexible and the fastening parts should not be loose. 5.1.2 Test method
Inspection and feel method.
5.2 Photoelectric performance
5.2.1 Requirements
The photoelectric performance requirements of the camera should comply with the provisions of Table 1. Table 1
Basic parameters
Output signal:
Minimum detectable temperature difference
Minimum resolvable temperature difference
Maximum spatial resolution
Noise equivalent temperature difference
5.2.2 Measurement method
Perform in accordance with the provisions of GB/T15303.
5.3 Safety
1 (video 0.7±0.21, synchronization 0.3±8 channels) Positive polarity
100 lines: <0.5
200 lines: 1
The safety requirements and test methods of the camera shall comply with the provisions of GB14861. 5.4 Environmental adaptability
5.4.1 Climate and environmental adaptability
The climate and environmental adaptability of the camera is shown in Table 2. 2
100 lines: ≤1
200 lines: ≤2
5.4.1.1 Requirements
Temperature storage conditions
Temperature limit conditions
Working temperature conditions
Humidity working conditions
Humidity storage conditions
Atmospheric pressure
GB/T15302—94
—10~45℃
0~40℃
2228℃
28C, 67%RH
40℃, 90%RH
86~106kPa
5.4.1.1.1 The electro-optical performance of the camera within the working temperature range shall comply with the requirements of Table 1 of this standard. 5.4.1.1.2 The electro-optical performance of the camera under humidity working conditions shall comply with the provisions of Table 1 of this standard. 5.4.1.1.3 The product function shall be guaranteed under temperature extreme conditions (i.e. the camera can display the two-dimensional thermal image distribution in real time). 5.4.1.2 Test method
5.4.1.2.1 Temperature
The test method specified in Appendix A (Supplement) shall be followed. The temperature cycle timing diagram is shown in Figure 1. After the test, the camera shall meet the requirements of Articles 5.1 and 5.2 of this standard. Upper limit of the test piece
Press and twist the camera
Long family piece
Pass the test
Figure 1 Temperature cycle test timing diagram
5.4.1.2.2 Humidity
Fan San Limit
1 Time (]:)
The test method specified in Appendix B (Supplement) shall be followed. The humidity cycle timing diagram is shown in Figure 2. After the test, the camera should meet the requirements of 5.1, 5.2 and 5.3 of this standard. 2. 4. GB/T15302-94. Some conditions of humidity room. Figure 2. Timing diagram of humidity cycle test. 5.4.2 Mechanical environmental adaptability. 5.4.2.1 Requirements. 5.4.2.1.1 Vibration. The vibration test conditions of the camera should be in accordance with the provisions of C1 in Appendix C (Supplement). 5.4.2.1.2 Shock. The unpackaged test product should be able to withstand the shock test with an acceleration of 150m/s2 and a pulse duration of 11ms. The number of shocks is three consecutive shocks in the specified direction, and the shock pulse waveform is a half-sine wave. The impact surface is four side surfaces (front and rear surfaces are not tested), and the impact direction is shown in Figure 3.
5.4.2.1.3 Free fall
GB/T15302—94
The packaged test product should be able to withstand a free fall test with a drop height of 500mm, falling twice, and the drop surface is four side surfaces (front and rear surfaces are not tested) as shown in Figure 4. Piece (6
5.4.2.2 Test method
5.4.2.2.1 Vibration
The vibration test method shall be carried out in accordance with the provisions of Article C2 in Appendix C (Supplement). After the test, the camera shall comply with the requirements of Articles 5.1 and 5.2.
5.4.2.2.2 Shock
The shock test shall be carried out in accordance with the method specified in Chapter 5 of GB2423.5. After the test, the camera shall comply with the requirements of Articles 5.1 and 5.2.
5.4.2.2.3 Free fall
The free fall test shall be carried out in accordance with the method specified in Chapter 5 of GB2423.8. After the test, the camera shall meet the requirements of Articles 5.1 and 5.2 of this standard.
5.5 Reliability
5.5.1 Requirements
The lower limit value (6,) of the assumed value of the mean time between failures (MTBF) of the camera shall not be less than 1000h. 5.5.2 Test method
The reliability test method of the camera shall be carried out in accordance with the contents specified in this standard and GB12322. 5.5.2.1 Test plan
The test shall be carried out in accordance with the timed truncation test plan 4 in Table 1 of GB12322. 5.5.2.2 Failure criteria
5.5.2.2.1 Fatal failure
a. The camera housing is electrified
The camera has open flames,
The power cord or power plug is damaged.
5.5.2.2.2 Serious failure
The image is distorted;
GB/T15302—94
The amplitude of the thermoelectric signal exceeds -50% of the standard rated value. 5.5.2.2.3 Minor failure
The amplitude of the thermoelectric signal exceeds -40% of the standard rated value; the fuse, indicator light, etc. are burned.
6 Inspection rules
6.1 Inspection classification
The inspections specified in this standard are divided into finalization inspections (design finalization inspections, production finalization inspections), acceptance inspections and routine inspections. 6.2 Finalization test
6.2.1 Test items and methods
Test items and methods are shown in Table 3.
Appearance, structure
Electro-optical performance
Environmental adaptability
Reliability
According to Article 5.1.1
See Table 1
According to Article 5.3
According to Article 5.4
According to Article 5.5
Testing methods
According to Article 5.1.2
According to Article 5.2.2
For products with different specifications, different shapes and added functions derived from the designed finalized products, they can be designed and produced in one time under the premise of ensuring quality. For test items with constant stress, it is allowed to simplify. 6.2.2 Sample extraction and quantity
Samples for finalization test should be randomly extracted from the finalized batch products. When designing and finalizing, the number of samples for each test group is shown in Table 4. When finalizing and designing for production, the batch of products should be no less than 50 units. Table 4
6.2.3 Inspection procedure
The procedure for finalizing inspection is shown in Figure 5.
Electro-optical performance inspection
Safety test
Environmental adaptability test
Reliability test
Number of samples
Should comply with the provisions of Article 5.5 of this standard
Finalized batch annual production
Random addition
6.2.4 Processing of finalization inspection results
GB/T15302—94
Electric, North Energy Inspection
An Sheng Wu Most
According to the store Applicable tire test
When designing and finalizing, if unqualified items appear, the reasons should be found out in time and measures should be taken. And re-test this project and related projects until they are qualified.
When the production is finalized, if there are unqualified items, they should be re-submitted for inspection. If unqualified items still appear, the production should be judged as unqualified. 6.3 Delivery inspection
The delivery inspection shall be carried out by the quality inspection and supervision department of the manufacturer. The ordering party may send a representative to participate, and the results will be used as the basis for determining whether the product can be shipped.
6.3.1 Inspection items
6.3.1.1 Unpacking inspection
The inspection contents are shown in Table 5.
Packing inspection
Appearance inspection
6.3.1.2 Safety inspection
Shortage or wrong packaging of other models in the packaging box
Lack of certificate, instruction manual, packing list or other accessories
Lack of manufacturer name, product model, name, trademark, manufacturing date, number on the product
Serious cracking and deformation of the product
Peeling and rusting of the coating layer, bubbling of plastic parts, overflow of potting
Unclear marking on the panel
Loosening of fastening screws, ineffectiveness of control mechanism, obvious scratches and damage on the product
The contents of the safety inspection shall comply with the relevant provisions of GB14861. 6.3.1.3 Photoelectric performance measurement
The contents of the photoelectric performance inspection are shown in Table 1.
6.3.2 Inspection procedure
The inspection procedure is unpacking inspection, safety inspection, and photoelectric performance inspection. 7
6.3.3 Inspection quantity
Generally, the delivery inspection shall be fully inspected.
6.3.4 Inspection requirements
GB/T15302—94
All inspection items in the delivery inspection shall be qualified. In case of non-conformity, the cause shall be found out and measures shall be taken until the goods are qualified. 6.4 Routine inspection
Routine inspection shall be carried out in a qualified laboratory. 6.4.1 Inspection items and procedures
6.4.1.1 The items of routine inspection are shown in Table 6. Table 6
Optoelectronic performance
Environmental adaptability
Reliability
Requirements and methods
According to Articles 5.2.1 and 5.2.2
According to Article 5.3
According to Article 5.4
According to Article 5.5
6.4.1.2 The samples for routine inspection shall be randomly selected from the products that have passed the delivery inspection (the samples for reliability test shall be in accordance with the provisions of Article 5.5 of this standard). First, the items specified in Article 6.3.1 of this standard shall be inspected. If unqualified products are found, they shall be replaced with randomly selected qualified products. At the same time, analyze the reasons and write them into the routine inspection report, but it shall not be used as the basis for judging the results of routine inspection. 6.4.1.3 The routine inspection procedure is shown in Figure 6.
Card production
Production ... If the item is still found to be unqualified during the double test, the test should be stopped, and the routine inspection of the batch of products should be judged to be unqualified, and the delivery inspection should be stopped. At this time, find out the cause, take measures, completely eliminate the unqualified factors, resubmit for routine inspection, until the routine inspection is passed, and take corresponding measures for all products in the batch. Samples after routine inspection cannot be shipped as genuine products. 7 Marking, packaging, transportation, storage
7.1 Marking
There should be eye-catching, neat, sun-proof and rain-proof product and packaging marks. 8
7.1.1 Product marking
Manufacturer name;
Product model, name,
Trademark;
GB/T15302-94
Manufacturing date (or number) or production batch number: product standard number.
Packaging marking
The packaging storage and transportation graphic markings should comply with the provisions of GB191. a.
Handle with care;
Afraid of moisture;
Upward,
Mass, kg,
Volume, cm.
7.2 Packaging
The product should be placed in a shockproof cushioned packaging box, which should be accompanied by a product certificate, packing list, product technical instructions, accessories, etc.
7.3 Transportation
The packaged products can be transported by common means of transportation in the position indicated in the packaging box, but mechanical collisions and rain and snow should be avoided.
7.4 Storage
The packaged products should be stored in a warehouse with an ambient temperature of -10~+40℃ and a relative humidity of 50%~80%. There should be no acidic, alkaline or other corrosive gases in the room, and no strong mechanical vibration. Under this condition, the storage period is one year (the product should be powered on at least once every six months).
A1 Purpose
GB/T15302-94
Appendix A
Temperature test method
(Supplement)
To enable the camera to work under various temperature tests. Due to the different environments of users, the camera may be transported by many vehicles and may be subjected to various storage temperature tests, so this test is required. In addition, some components and parts are sensitive to these temperature limits or their performance is weakened by the stress caused by temperature. Therefore, in order to observe the impact of temperature on the performance and structural stability of the camera, a certain logical test sequence must be followed. A2 Test requirements
a. During the test, the rate of temperature change between each temperature step (see Figure 1) shall not exceed 1℃/min (not exceeding the average value of 5min). After reaching the test temperature, the sample temperature is allowed to stabilize for 2h; b. During the high and low temperature storage test, the power supply is disconnected and maintained in the high and low temperature boxes (rooms) for 4h respectively; c. The upper limit temperature operation time of the working range is 16h; d. Place the sample in a test box (room) with room temperature without packaging, without power, "ready to use state" or normal working position. A3 Test method
A3.1 The temperature test shall be carried out according to the temperature cycle test timing diagram in Figure 1 (hereinafter referred to as the timing diagram). A3.2 Benchmark working condition temperature test: The test is carried out in a high and low temperature box (room) with a temperature of 20±2℃ or in a room with similar benchmark working conditions. After 2h, the power supply of the sample is turned on. After preheating, the items specified in Article 5.2 are tested. A3.3 Temperature test for lower limit of working range: the power supply of the sample is in the disconnected position, and the temperature in the high and low temperature box (room) is reduced to the temperature value of the corresponding step in the timing diagram. After 2 hours, the power supply of the sample is turned on, and the items specified in Articles 5.4.1.1.1 and 5.4.1.1.2 are tested. A3.4 Temperature test for lower limit of extreme conditions: the power supply of the sample is in the disconnected position, and the temperature in the high and low temperature box (room) is reduced to the temperature value of the corresponding step in the timing diagram. After 2 hours, check whether the sample can work. A3.5 Temperature test for lower limit of storage conditions: the power supply of the sample is in the disconnected position, and the temperature in the high and low temperature box (room) is reduced to the temperature value of the corresponding step in the timing diagram, and maintained for 4 hours.
A3.6 Temperature test for reference working conditions: the temperature in the high and low temperature box (room) is raised to the reference working condition temperature. After 2 hours, the power supply of the sample is turned on, and the items specified in Article 5.2 are tested. In order to ensure that the sample does not condense water, the temperature recovery rate can be reduced or other measures that do not violate the purpose of the temperature test can be taken.
A3.7 Temperature test for upper limit of working range: the sample is powered on, the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram, 2 hours later, the items specified in 5.4.1.1 are tested. A3.8 Temperature test for upper limit of extreme conditions: the sample is powered on, the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram, 2 hours later, check whether the sample can work. A3.9 Temperature test for upper limit of storage conditions: the sample power is disconnected, the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram, and maintains for 4 hours.
A3.10 Temperature operation test for upper limit of working range: the sample power is disconnected, the temperature in the high and low temperature box (room) drops to the temperature value of the corresponding step in the timing diagram, the power is turned on, and the test is run for 16 hours. The items specified in 5.2 are tested at 8 hours and at the end of the test. A3.11 Benchmark working condition temperature test: The sample is still powered on, and the temperature in the high and low temperature boxes (rooms) is lowered to the benchmark working condition temperature. After 2 hours, the contents specified in Articles 5.1 and 5.2 are tested. 10
B1 Purpose
GB/T15302-94
Appendix B
Humidity test method
(Supplement)
Designed to determine the impact of warm and humid atmosphere on the camera, this test is an accelerated test that exposes the weaknesses of components, components and process specifications. These weaknesses may appear during the use of the camera on site. B2 Test requirements
a. During the test, the sample should be allowed to undergo thermal and humidity equilibrium in each humidity step (see Figure 2) before testing. The thermal equilibrium time is 2 hours, b. The air in the humid box (room) should be able to circulate evenly to ensure that the temperature change in the box (room) does not exceed ±2°C and the humidity change does not exceed ±3% within the specified time, and condensation should be prevented from falling on the sample; put the sample into the test box (room) without packaging, without power, "ready to use" or normal working position. First, place it under the condition of 20°C in the box (room) C
, and humidify the sample when the temperature reaches a stable state to prevent condensation of the sample. B3 Test method
B3.1 The humidity test is carried out according to the humidity cycle timing diagram of Figure 2 (hereinafter referred to as the timing diagram). B3.2 Humidity test under reference working conditions: It is carried out under the conditions of 20±2°C and 50% relative humidity. After 2 hours, turn on the power supply of the sample, and after preheating, test the items specified in Article 5.2. B3.3 Humidity test under working conditions: The sample is still powered on, and the humidity and temperature in the humidity box (room) are raised to the corresponding values ​​in the timing diagram. After 12 hours, the items specified in Article 5.4.1.1.2 are tested. B3.4 Humidity test under storage conditions: The sample power switch is turned on, but not connected to the power grid. The humidity and temperature in the humidity box (room) are raised to the corresponding step values ​​in the timing diagram, and stored for 24 hours. B3.5 Humidity test under reference working conditions: The sample is powered on, and the humidity and temperature in the humidity box (room) are reduced to the reference working conditions. After 2 hours of recovery, the contents specified in Articles 5.1 and 5.2 and the electrical strength and insulation resistance of the camera are tested. Appendix C
Swept frequency vibration (sinusoidal) test method
(Supplement)
C1 Requirements
The sample should be able to withstand the vibration test specified in Table C1. After the test, it should meet the requirements of Articles 5.1 and 5.2. The specific groups should be specified in the product standards.8 Extreme Conditions Upper Limit Temperature Test: The sample is powered on, and the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram. After 2 hours, check whether the sample can work. A3.9 Storage Conditions Upper Limit Temperature Test: The sample power is disconnected, and the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram, and maintains for 4 hours.
A3.10 Operating Range Upper Limit Temperature Operation Test: The sample power is disconnected, and the temperature in the high and low temperature box (room) drops to the temperature value of the corresponding step in the timing diagram, and the power is turned on to run the test for 16 hours. At 8 hours and at the end of the test, test the items specified in Article 5.2. A3.11 Reference Working Conditions Temperature Test: The sample is still powered on, and the temperature in the high and low temperature box (room) drops to the reference working conditions temperature. After 2 hours, test the contents specified in Articles 5.1 and 5.2. 10
B1 Purpose
GB/T15302—94
Appendix B
Humidity test method
(Supplement)
Designed to determine the effects of warm and humid atmosphere on cameras, this test is an accelerated test that exposes the weaknesses of components, components and process specifications. These weaknesses may appear during the use of cameras on site. B2 Test requirements
a. During the test, the sample should be allowed to undergo thermal and humidity equilibrium in each humidity step (see Figure 2) before testing. The thermal equilibrium time is 2h. b. The air in the humid box (room) should be able to circulate evenly to ensure that the temperature change in the box (room) does not exceed ±2°C and the humidity change does not exceed ±3% within the specified time, and condensation should be prevented from falling on the sample; the sample is placed in the test box (room) without packaging, without power, "ready to use" or normal working position. First, place the sample in the box (room) C
at a temperature of 20°C. When the sample reaches a stable temperature, humidify it to prevent condensation of the sample. B3 Test method
B3.1 The humidity test is carried out according to the humidity cycle timing diagram in Figure 2 (hereinafter referred to as the timing diagram). B3.2 Humidity test under reference working conditions: It is carried out under the conditions of temperature of 20±2°C and relative humidity of 50%. After 2 hours, the sample power is turned on. After preheating, the items specified in Article 5.2 are tested. B3.3 Humidity test under working conditions: The sample is still in the power-on state, and the humidity and temperature in the humid box (room) are respectively increased to the corresponding values ​​in the timing diagram. After 12 hours, the items specified in Article 5.4.1.1.2 are tested. B3.4 Humidity test under storage conditions: The sample power switch is placed in the on position, but it is not connected to the power grid. The humidity and temperature in the humid box (room) are respectively increased to the corresponding step values ​​in the timing diagram, and stored for 24 hours. B3.5 Humidity test under reference working conditions: The sample is powered on, and the humidity and temperature in the humid box (room) are reduced to the reference working conditions. After 2 hours of recovery, the contents specified in Articles 5.1 and 5.2 and the electrical strength and insulation resistance of the camera are tested. Appendix C
Swept frequency vibration (sinusoidal) test method
(Supplement)
C1 Requirements
The sample should be able to withstand the vibration test specified in Table C1. After the test, it should comply with the provisions of Articles 5.1 and 5.2. The specific group should be specified in the product standard.8 Extreme Conditions Upper Limit Temperature Test: The sample is powered on, and the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram. After 2 hours, check whether the sample can work. A3.9 Storage Conditions Upper Limit Temperature Test: The sample power is disconnected, and the temperature in the high and low temperature box (room) rises to the temperature value of the corresponding step in the timing diagram, and maintains for 4 hours.
A3.10 Operating Range Upper Limit Temperature Operation Test: The sample power is disconnected, and the temperature in the high and low temperature box (room) drops to the temperature value of the corresponding step in the timing diagram, and the power is turned on to run the test for 16 hours. At 8 hours and at the end of the test, test the items specified in Article 5.2. A3.11 Reference Working Conditions Temperature Test: The sample is still powered on, and the temperature in the high and low temperature box (room) drops to the reference working conditions temperature. After 2 hours, test the contents specified in Articles 5.1 and 5.2. 10
B1 Purpose
GB/T15302—94
Appendix B
Humidity test method
(Supplement)
Designed to determine the effects of warm and humid atmosphere on cameras, this test is an accelerated test that exposes the weaknesses of components, components and process specifications. These weaknesses may appear during the use of cameras on site. B2 Test requirements
a. During the test, the sample should be allowed to undergo thermal and humidity equilibrium in each humidity step (see Figure 2) before testing. The thermal equilibrium time is 2h. b. The air in the humid box (room) should be able to circulate evenly to ensure that the temperature change in the box (room) does not exceed ±2°C and the humidity change does not exceed ±3% within the specified time, and condensation should be prevented from falling on the sample; the sample is placed in the test box (room) without packaging, without power, "ready to use" or normal working position. First, place the sample in the box (room) C
at a temperature of 20℃. When the sample reaches a stable temperature, humidify it to prevent condensation of the sample. B3 Test method
B3.1 The humidity test is carried out according to the humidity cycle timing diagram in Figure 2 (hereinafter referred to as the timing diagram). B3.2 Humidity test under reference working conditions: It is carried out under the conditions of temperature of 20±2℃ and relative humidity of 50%. After 2 hours, the sample power is turned on. After preheating, the items specified in Article 5.2 are tested. B3.3 Humidity test under working conditions: The sample is still in the power-on state, and the humidity and temperature in the humid box (room) are respectively increased to the corresponding values ​​in the timing diagram. After 12 hours, the items specified in Article 5.4.1.1.2 are tested. B3.4 Humidity test under storage conditions: The sample power switch is placed in the on position, but it is not connected to the power grid. The humidity and temperature in the humid box (room) are respectively increased to the corresponding step values ​​in the timing diagram, and stored for 24 hours. B3.5 Humidity test under reference working conditions: The sample is powered on, and the humidity and temperature in the humid box (room) are reduced to the reference working conditions. After 2 hours of recovery, the contents specified in Articles 5.1 and 5.2 and the electrical strength and insulation resistance of the camera are tested. Appendix C
Swept frequency vibration (sinusoidal) test method
(Supplement)
C1 Requirements
The sample should be able to withstand the vibration test specified in Table C1. After the test, it should comply with the provisions of Articles 5.1 and 5.2. The specific group should be specified in the product standard.
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