SJ 20733-1999 General specification for military recording telephones
Some standard content:
FL5805 Military Standard for Electronic Industry of the People's Republic of China
SJ20733--1999
General specification for military recording telephones
Published on November 10, 1999
Implemented on December 1, 1999
Approved by the Ministry of Information Industry of the People's Republic of China 1 Scope
Military Standard for Electronic Industry of the People's Republic of China General Specification for Military Recording Telephones
General specification for military recording telephones
1.1 Subject Content
SJ 20733-1999
This specification specifies the requirements, quality assurance provisions and delivery preparation requirements for military recording telephones. 1.2 Scope of Application
This specification applies to military digital recording telephones and tape recording telephones (hereinafter collectively referred to as telephones). 2 Reference documents
GJB191--90 Packaging, storage and transportation graphic signs
GJB2018-87 Tape recorder measurement method GJB201987 Basic parameters and technical requirements for tape recorders GB6388-86 Transport packaging delivery and receipt marks GB/T5465.2-1996 Graphic symbols for electrical equipment GB9034-88 Technical requirements for dual-tone multi-frequency push-button telephones GB/T15279--94 Technical conditions for automatic telephones GJB150.3-86 Environmental test methods for military equipment High temperature test GJB150 .4—86 Environmental test methods for military equipment Low temperature test GIB150.9-86 Environmental test methods for military equipment Wet heat test GJB150.11-86 Environmental test methods for military equipment Salt spray test GJB150.16-86 Environmental test methods for military equipment Vibration test GJB150.18--86 Environmental test methods for military equipment: Impact test GJB179A--96 Counting sampling inspection procedures and tables GJB367.2--87 General technical conditions for military communication equipment Environmental test methods General specifications for equipment maintainability Basic requirements for maintainability GJB 368.2--87
General specification for equipment maintainability Maintainability test and assessment GJB 368.587
Technical requirements and test methods for electromagnetic compatibility of telephone terminals SJ xxx×-xx
SJxxxx-xx General specification for digital recording telephones 3 Requirements
3.1 Product specifications
The Ministry of Industry of the People's Republic of China issued TiiKAoNrkAca on November 10, 1999
Implemented on December 1, 1999
SJ20733--1999
The telephone shall comply with the provisions of this specification and the corresponding product specifications. If the requirements of this specification conflict with those of the product specification, the product specification shall prevail.
3.2 Qualification appraisal
The telephone submitted in accordance with this specification shall be a product that has been qualified or standardized. 3.3 Conditions of Use
Unless otherwise specified in the contract or order, the telephone should be usable under the following conditions: Temperature: -10~40°C
0-40°C (for LCD screen) Relative condensation: ≤90%:
Atmospheric pressure: 86~106kPa.
3.4 Appearance Quality
The outer surface of the telephone shall not have obvious dents, cracks, scratches, deformation, etc. The operation of switches, buttons and knobs shall be flexible and reliable, and the parts shall be tightened without looseness. The text and graphic symbols indicating the functions shall be correct, clear and firm. 3.5 Structure and Dimensions
The structure and dimensions of the telephone shall be specified in the product specifications. 3.6 Weight
The weight of the telephone shall be specified in the product specifications.
3.7 Signs and codes
The text and graphic symbols that describe the functions should be clear, legible, correct and firm. The graphic symbols used should comply with the provisions of GB5465.2 and GB15279. The symbols on the display should comply with the provisions of SJ/T General Specifications for Digital Recording Telephones.
3.8 Interchangeability
The shape and position of the magnetic tracks recorded on the tape and their application should comply with the provisions of GB2019 to ensure the interchangeability of similar products and the recorded tapes.
3.9 Adaptability to power supply
The power supply of the telephone is specified by the product specifications. When the AC power supply voltage changes by ±10%; the DC power supply voltage changes by $.%, the allowable changes in the jitter rate, frequency response, signal-to-noise ratio and harmonic distortion of the tape recording telephone are specified by the product specifications.
The adaptability of digital recording telephone to power supply shall be specified by product specifications. 3.10 Performance parameters
3.10.1 The performance parameters of digital recording telephone shall comply with the provisions of Table 1-2-
Parameter name
Leakage current in static fast state
DC resistance in loop state
Ring power sensitivity
Ring state impedance
Ring sound level
Loop state automatic establishment time
Ring signal detector insensitivity
White on-hook time
Remote control sensitivity
SJ 20733—1999
Minimum detectable average power level of input voice signalMaximum average power level of voice signal output to the subscriber lineInput frequency, level and duration of prompt tone sent to the subscriber line port
Input impedance in static state
Sending loudness rating (SLR), receiving loudness rating (RLR) and sound masking rating (STMR)Sending frequency response, receiving frequency response and sending amplitude characteristicsReturn loss in loop state
Minimum balance to ground
Sending noise
Frequency combination, frequency tolerance and signal duration of two adjacent DTMF groups when sending a number Signal time interval
Total power of the signal when not transmitting
≤300 or ≤350 (set "R\ key)
≥70 (A weighting)
10 (maintain 20 s)
Playback V period: -7~23
Playback V pause period: -7~40
100±10%
-9±3 (for continuous sound)
According to the provisions of 4.2.1 of GB/T 15279According to 4.2.2~4.2.4 of GB/T15279
Stable balance loss L, ≥9
Echo balance return loss L≥11
α≥40 (300~600 Hz)
α≥50(600~-3400Hz)
Total noise of double meter: ≤-64 (off-hook)
≤-70 (on-hook)
Broadband noise: ≤-50 (off-hook)
Hot-56 (on-hook)
According to the provisions of 4.3.2.5 ~4.3.2.4 in GB/T 15279
According to the provisions of 4.3.2.5 in GB/T15279
According to the provisions of 4.3.2.6 in GB/T15279
According to the provisions of 4.3.2.7 in GB/T 15279
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3.10.2 Tape recording telephone
SJ 20733—1999
3.10.2.1 The performance of the telephone part of a tape recorder shall conform to the provisions of GB/T15279. 3.10.2.2 The mechanical and electrical performance parameters of the recording part of a tape recorder shall conform to the provisions of Table 2 and Figure 1. Table 2
Tap speed error
Wow and wow rate
Recording time
Voice control delay time
Machine noise
Reference frequency
Reference magnetic level
Parameter name
Playback channel tolerance
Residual channel tolerance
Playback channel
All channels
All channel spectrum distortion
Noise elimination effect
Line input impedance
Maximum level
Line output impedance
Line load impedance
Product specifications
See the figure!
See the figure!
≥47 (unbalanced) 6002 (balanced)
-10 +6
SJ 20733—1999
3.10.2.3 The performance of the tape recorder shall comply with the provisions of Table 3 and Figure 2. Table 3
Performance parameter Name
Call end room power-off time
Power-on sensitivity
Rated normal telephone line input level
Telephone recording full channel frequency response
Telephone recording full channel signal-to-noise ratio
Telephone recording full channel harmonic distortion (voltage) Phone rated power
Three charging difference upper limit
3.11 Continuous operation time
+2 dB
Three tolerance lower limit
The recording telephone should be able to operate continuously for more than 48 hours. 3.12 Safety
Main product standard requirements
+2 dB:
A weighting
20003000 40005000H2
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3.12. Insulation resistance
SJ 20733—1999
Under normal atmospheric conditions, the insulation resistance of the telephone shall not be less than 50M2. 3.12.2 Dielectric strength
Under normal atmospheric conditions, the telephone shall withstand a sinusoidal AC voltage with a frequency of 50IIz and an effective value of 500V for 1min without any flying or breakdown phenomenon.
3.12.3 Lightning resistance
According to the provisions of Article 4.13 of GB/T 15279. 3.13 Electromagnetic compatibility
The electromagnetic compatibility of the telephone shall comply with the relevant provisions of the Technical Requirements and Test Methods for Electromagnetic Compatibility of SI Telephone Terminals. 3.14 Environmental adaptability
The severity category of the environmental test of the telephone shall be specified by the product specification. The main performance parameters and requirements to be tested after the environmental test are specified by the product specifications. 3.14.1 Low-temperature storage
The phone is placed at a temperature of -55°C for 24 hours. After recovery, its appearance, structure and main performance shall comply with the provisions of Articles 3.4, 3.5 and product specifications. 3.14.2 Low-temperature operation
The phone is placed at a temperature of -10°C for 24 hours. Its appearance, structure and main performance shall comply with the provisions of Articles 3.4, 3.5 and product specifications.
3.14.3 High-temperature storage
The phone is placed at a temperature of 65°C for 24 hours. After recovery, its appearance, structure and main performance shall comply with the provisions of Articles 3.4, 3.5 and product specifications. 3. 14. 4 High temperature operation
After the telephone is operated at 40°C for 24 hours, its appearance, structure and main performance shall comply with the provisions of Article 3.4, Article 3.5 and the product specifications respectively.
3.14.5 Shock
After the telephone is subjected to the shock test specified in 4.7.10.5, its appearance and structure shall comply with the provisions of Article 3.4 and Article 3.5 respectively and can work normally.
3.14.6 Vibration
After the telephone is subjected to the vibration test specified in Table 4, its appearance, structure and main performance shall comply with the provisions of Article 3.4, Article 3.5 and the product specifications respectively.
Frequency range
10 ~ 30 ~ 10
30~55~30
3.14.7 Condensation
Displacement amplitude
On each axis: The number of sweep cycles
Product components are reported in turn on three mutually perpendicular axes according to the working position
After the telephone is left for 120 hours at a temperature of 30~60cC and a relative humidity of 95%, its appearance and structure shall comply with the provisions of Articles 3.4 and 3.5 and can work normally. 3.14.8 Microbiology
SJ 20733-1999
After the telephone is subjected to the mildew test of Article 4.7.10.8, its appearance, structure and main performance shall comply with the provisions of Articles 3.4, 3.5 and the product specification.
3.14.9 Salt spray
After the telephone has been subjected to the salt spray test specified in Table 5, its appearance and structure shall comply with the provisions of Articles 3.4 and 13.5 respectively, and it shall be able to operate normally.
Resolution
Weight ratio
3.14.10 Free fall
Salt spray settling rate
1.0~2.0 (take the average value over 16 h
)
Test temperature
Salt spray treatment method
Spray for 24 hours, dry for 24 hours under normal test conditions h,
consists of one cycle.
Continuous spray
Test time
After the unpackaged mobile phone falls freely from a height of 1m onto concrete, it should be able to operate normally, and the casing and handle should be free of marks. The phone with a crystal display screen is tested with packaging. 3.15 Reliability
The reliability of the phone is expressed by the mean time between failures (MTBF). The lower limit of the MTBF of a digital recording phone and a tape recording phone6 should be no less than 3000h and 12500h respectively. The life of the phone cord, fork spring and buttons should comply with the specifications of GB9034. 3.16 Maintainability
The maintainability design of the telephone shall comply with the provisions of GJB368.2. Its maintainability index requirements are stipulated in the product specifications. 4 Quality Assurance Provisions
4.1 Inspection Responsibilities
Unless otherwise specified in the contract or order, the contractor shall be responsible for completing all inspections specified in this specification: If necessary, the ordering party or the superior appraisal agency has the right to inspect any inspection items described in the specification. 4.1.1 Qualification Responsibility
All products must meet all requirements of Chapter 3 and Chapter 5 of this specification. The inspections specified in this specification shall become the entire inspection system of the contractor. A component of a system or quality outline. The contract shall include the inspection requirements specified in this specification card. The contractor shall also ensure that the products submitted for acceptance meet the contract requirements. Quality consistency sampling does not allow the submission of products that are known to be defective, nor does it allow the ordering party to accept defective products. 4.2 Inspection classification
The inspections specified in this specification are divided into:
a. Identification inspection;
b. Quality consistency inspection.
4.3 Inspection conditions
Unless otherwise specified, all inspections specified in this specification shall be carried out under standard atmospheric conditions of the test: Temperature: 15~35° C:
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Relative humidity: 20%~80%;
Atmospheric pressure: atmospheric pressure of the test site.
4.4 Identification test
SJ20733—1999
Identification test is generally carried out when the product design and production are finalized, but when the main design, technology, components and materials of the product have major changes that affect the important performance of the product and make the original identification conclusion no longer valid, identification test should also be carried out.
Identification test should be carried out in a laboratory approved by the ordering party or the superior identification agency. 4.4.1 Number of samples
The number of samples for identification test should generally not be less than 5. For samples with more than 5 units, they can be tested in groups, and the test items for each group are specified by the product specifications. 4.4.2 Inspection items
Identification test items shall be in accordance with the provisions of Table 6.
Appearance quality
Structure and size
Mark and code
Adaptability to power supply
Performance parameters
Main performance parameters
Continuous working time
Safety
Electromagnetic compatibility
Low temperature storage
Low temperature operation
High temperature storage
High temperature operation
21Reliability
Maintainability
23"Packaging inspection
Consistency test
Required
Chapter number
Test method
Chapter number
4.7.10.10
SJ 20733—1999
Note: (1) The symbol “” in the table indicates a mandatory item; “○” indicates an optional item; “” indicates an unselected item. (2) The main performance parameter items are specified by the product specifications. 4.4.3 Qualification criteria
When all inspection items meet the requirements of Chapter 3 and Chapter 5, the identification inspection is considered qualified. If any inspection item does not meet the specified requirements, the inspection should be suspended. The contractor shall analyze the unqualified items, find out the causes of the defects and take corrective measures before continuing to inspect the unqualified items and related items. If all inspection items meet the specified requirements, the identification inspection is still considered qualified: If any item still does not meet the specified requirements after continuing the inspection, the identification inspection is considered unqualified. 4.4.4 Maintenance of identification qualification
In order to maintain the qualification for identification inspection, the contractor shall provide product test data or qualification demonstration data according to the requirements of the ordering party or the superior identification agency.
4.5 Quality conformity inspection
4.5.1 Inspection Grouping
Quality consistency inspection is divided into A, B, C and FD inspection groups. 4.5.2 Formation of inspection batches
The formation of inspection batches shall comply with the provisions of Article 3.6 of GJB179A. 4. 5. 3 Group A inspection
4.5.3.1 Inspection items
The inspection items of Group A shall be in accordance with the provisions of Table 6.
4.5.3.2 Sampling plan
The sampling inspection of Group A shall be carried out in accordance with the relevant provisions of GJB179A, using a single sampling plan of general inspection level II, and the acceptable qualified quality level (AQL) shall be selected in accordance with the provisions of Table 7. Defect classification shall be in accordance with Appendix A and product specifications.
Defect classification
Serious defects
Minor defects
4.5.3.3 Qualification criteria
Acceptable quality level (AQL)
According to the inspection results of the samples, if the defects found are not greater than the qualified judgment number, the product is judged to have passed the Group A inspection, otherwise, it is judged to have failed the Group A inspection.
Fatal defects are not allowed in the Group A inspection, otherwise, the product is judged to have failed the Group A inspection. 4.5.3.4 Re-inspection
For the batch that fails the Group A inspection, the manufacturer shall analyze the batch of products, find out the cause of the defects, and take corrective measures before resubmitting it for inspection. The resubmitted batch shall be separated from the new batch, and marked with "Newly submitted batch", and stricter inspection shall be adopted. If the re-inspection is qualified, the batch is still judged to have passed the Group A inspection: If the re-inspection is still unqualified, the batch is judged to have failed the Group A inspection.
4.5.3.5 Handling of Group A Inspection Samples
If defective products are found in the batches that have passed the Group A inspection, the contractor shall be responsible for repairing them and meeting the requirements of the product specifications before they can be delivered in batches according to the contract or order. -9-
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4.5.4 Group B Inspection
SJ 20733—1999
Group B inspection shall be carried out on the products of the batches that have passed the Group A inspection. 4.5.4.1 Inspection Items
The inspection items of B paper shall be in accordance with the provisions of Table 6.
4.5.4.2 Bundle Sampling Scheme
Group B sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using the one-time batch sampling scheme of special inspection level S-3, and the acceptable quality level (AQL) shall be selected in accordance with the provisions of Table 8. Defect classification shall be in accordance with the provisions of Appendix A and product specifications.
Defect classification
Major defects
Minor defects
4.5.4.3 Acceptance judgment
Acceptable quality level (AQL)
According to the inspection results, if the number of defects found is not higher than the acceptance judgment number, the batch is judged to have passed the B group inspection, otherwise it is judged to have failed the B group inspection.
4.5.4.4 Re-inspection
For batches that have failed the B group inspection, the manufacturer shall analyze the batch of products, find out the causes of the defects, and take corrective measures before resubmitting for inspection. The resubmitted batch shall be separated from the new batch and marked with "resubmitted batch", and stricter inspection shall be adopted.
If the re-inspection is qualified, the batch is still judged to have passed the B group inspection: if the re-inspection is still unqualified, the batch is judged to have failed the B group inspection.
4.5.4.5 Handling of Group B Inspection Samples
If defective products are found in the batches that have passed the Group B inspection, the contractor shall be responsible for repairing them and meet the requirements of the product specifications before they can be delivered in batches according to the contract or order. 4.5.5 Group C Inspection
C inspection shall be carried out on the products of the Group A and Group B inspection batches. 4.5.5.1 Inspection Items
C inspection items shall be in accordance with the provisions of Table 6.
4.5.5.2 Sampling Plan
C sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using a one-time insertion plan with a special inspection level of S-1, and the acceptable quality level (AQL) shall be selected in accordance with the provisions of Table 9. Defect classification shall be in accordance with the provisions of Appendix A and product specifications.
Defect classification
Serious defects
Minor defects
4.5.5.3 Qualification judgment
AQL (Acceptance Quality Level)
According to the inspection results, if the number of defects found is less than the qualified judgment number, the batch of C group inspection is judged to be qualified, otherwise, the batch of C group inspection is judged to be unqualified.
4.5.5.4 Re-inspection
SJ 20733—1999
If the sample fails to pass the C group inspection, the acceptance and delivery of the equipment shall be stopped. The contractor shall notify the qualified appraisal unit of the unqualified situation. After finding out the cause and taking corrective measures, it can be resubmitted for inspection. When resubmitting for inspection, the number of samples shall be increased. All test areas shall be inspected according to the opinions of the qualified appraisal unit. Or only the unqualified items shall be tested or inspected.
If the re-inspection is qualified, the batch can still be judged to have passed the Group C inspection. If the re-inspection is still unqualified, the unqualified situation should be notified to the qualification appraisal unit.
4.5.5.5 Sample processing
Unless otherwise specified, the contractor will repair the discovered or potential damage of the samples after the Group C inspection, and they can be delivered according to the contract or order after passing the Group A and Group B inspections. 4.5.5.6 Inspection cycle
Unless otherwise specified, each submitted batch should be subject to a Group C inspection, but not less than once a year. When there are major changes in the main design, process, components and raw materials of the telephone that have an impact on the performance of the equipment, a Group C inspection should also be carried out.
4.5.6 Group D inspection
Group D inspection should be carried out on the products that have passed the Group A and Group B inspections. 4.5.6.1 Inspection items
Group D inspection items shall be in accordance with the provisions of Table 6.
4.5.6.2 Sampling plan
Samples for group D inspection shall be randomly selected from the products that have passed the group A and group B inspections, and the number of samples shall be specified by the product specifications.
4.5.6.3 Failure
If the sample fails the group D inspection, the acceptance and delivery of the product shall be stopped, and the contractor shall inform the qualified appraisal unit of the failure. After finding out the cause and taking corrective measures, the product may be resubmitted for inspection. If the re-inspection is qualified, the batch is judged to have passed the group D inspection; if the re-inspection is still unqualified, the unqualified situation shall be notified to the qualified appraisal unit.
4.5.6.4 Sample handling
Unless otherwise specified, the contractor of the sample that has passed the group D inspection shall be responsible for repairing and replacing the parts that have consumed all or most of the design service life, and the sample that has passed the group A and group B inspections can be delivered according to the contract or order. 4.5.6.5 Inspection cycle
The D group inspection cycle is determined by negotiation between the ordering party and the contractor. However, when there are major changes in the main design, process, components and raw materials of the product that have a significant impact on the performance of the product, the D group inspection should also be carried out. 4.6 Packaging inspection
4.6.1 Inspection items
The packaging inspection items shall be in accordance with the provisions of Table 10.
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KANiKAca-5. Treatment of Group A Inspection Samples
If defective products are found in the batches that have passed the Group A inspection, the contractor shall be responsible for repairing them and meet the requirements of the product specifications before they can be delivered in batches according to the contract or order. -9-
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4.5.4 Group B Inspection
SJ 20733—1999
Group B inspection shall be carried out on the products of the batches that have passed the Group A inspection. 4.5.4.1 Inspection Items
The inspection items of B paper shall be in accordance with the provisions of Table 6.
4.5.4.2 Bundle Sampling Scheme
Group B sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using the one-time batch sampling scheme of special inspection level S-3, and the acceptable quality level (AQL) shall be selected in accordance with the provisions of Table 8. Defect classification shall be in accordance with the provisions of Appendix A and product specifications.
Defect classification
Major defects
Minor defects
4.5.4.3 Acceptance judgment
Acceptable quality level (AQL)
According to the inspection results, if the number of defects found is not higher than the acceptance judgment number, the batch is judged to have passed the B group inspection, otherwise it is judged to have failed the B group inspection.
4.5.4.4 Re-inspection
For batches that have failed the B group inspection, the manufacturer shall analyze the batch of products, find out the causes of the defects, and take corrective measures before resubmitting for inspection. The resubmitted batch shall be separated from the new batch and marked with "resubmitted batch", and stricter inspection shall be adopted.
If the re-inspection is qualified, the batch is still judged to have passed the B group inspection: if the re-inspection is still unqualified, the batch is judged to have failed the B group inspection.
4.5.4.5 Handling of Group B Inspection Samples
If defective products are found in the batches that have passed the Group B inspection, the contractor shall be responsible for repairing them and meet the requirements of the product specifications before they can be delivered in batches according to the contract or order. 4.5.5 Group C Inspection
C inspection shall be carried out on the products of the Group A and Group B inspection batches. 4.5.5.1 Inspection Items
C inspection items shall be in accordance with the provisions of Table 6.
4.5.5.2 Sampling Plan
C sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using a one-time insertion plan with a special inspection level of S-1, and the acceptable quality level (AQL) shall be selected in accordance with the provisions of Table 9. Defect classification shall be in accordance with the provisions of Appendix A and product specifications.
Defect classification
Serious defects
Minor defects
4.5.5.3 Qualification judgment
AQL (Acceptance Quality Level)
According to the inspection results, if the number of defects found is less than the qualified judgment number, the batch of C group inspection is judged to be qualified, otherwise, the batch of C group inspection is judged to be unqualified.
4.5.5.4 Re-inspection
SJ 20733—1999
If the sample fails to pass the C group inspection, the acceptance and delivery of the equipment shall be stopped. The contractor shall notify the qualified appraisal unit of the unqualified situation. After finding out the cause and taking corrective measures, it can be resubmitted for inspection. When resubmitting for inspection, the number of samples shall be increased. All test areas shall be inspected according to the opinions of the qualified appraisal unit. Or only the unqualified items shall be tested or inspected.
If the re-inspection is qualified, the batch can still be judged to have passed the Group C inspection. If the re-inspection is still unqualified, the unqualified situation should be notified to the qualification appraisal unit.
4.5.5.5 Sample processing
Unless otherwise specified, the contractor will repair the discovered or potential damage of the samples after the Group C inspection, and they can be delivered according to the contract or order after passing the Group A and Group B inspections. 4.5.5.6 Inspection cycle
Unless otherwise specified, each submitted batch should be subject to a Group C inspection, but not less than once a year. When there are major changes in the main design, process, components and raw materials of the telephone that have an impact on the performance of the equipment, a Group C inspection should also be carried out.
4.5.6 Group D inspection
Group D inspection should be carried out on the products that have passed the Group A and Group B inspections. 4.5.6.1 Inspection items
Group D inspection items shall be in accordance with the provisions of Table 6.
4.5.6.2 Sampling plan
Samples for group D inspection shall be randomly selected from the products that have passed the group A and group B inspections, and the number of samples shall be specified by the product specifications.
4.5.6.3 Failure
If the sample fails the group D inspection, the acceptance and delivery of the product shall be stopped, and the contractor shall inform the qualified appraisal unit of the failure. After finding out the cause and taking corrective measures, the product may be resubmitted for inspection. If the re-inspection is qualified, the batch is judged to have passed the group D inspection; if the re-inspection is still unqualified, the unqualified situation shall be notified to the qualified appraisal unit.
4.5.6.4 Sample handling
Unless otherwise specified, the contractor of the sample that has passed the group D inspection shall be responsible for repairing and replacing the parts that have consumed all or most of the design service life, and the sample that has passed the group A and group B inspections can be delivered according to the contract or order. 4.5.6.5 Inspection cycle
The D group inspection cycle is determined by negotiation between the ordering party and the contractor. However, when there are major changes in the main design, process, components and raw materials of the product that have a significant impact on the performance of the product, the D group inspection should also be carried out. 4.6 Packaging inspection
4.6.1 Inspection items
The packaging inspection items shall be in accordance with the provisions of Table 10.
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KANiKAca-5. Treatment of Group A Inspection Samples
If defective products are found in the batches that have passed the Group A inspection, the contractor shall be responsible for repairing them and meet the requirements of the product specifications before they can be delivered in batches according to the contract or order. -9-
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4.5.4 Group B Inspection
SJ 20733—1999
Group B inspection shall be carried out on the products of the batches that have passed the Group A inspection. 4.5.4.1 Inspection Items
The inspection items of B paper shall be in accordance with the provisions of Table 6.
4.5.4.2 Bundle Sampling Scheme
Group B sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using the one-time batch sampling scheme of special inspection level S-3, and the acceptable quality level (AQL) shall be selected in accordance with the provisions of Table 8. Defect classification shall be in accordance with the provisions of Appendix A and product specifications.
Defect classification
Major defects
Minor defects
4.5.4.3 Acceptance judgment
Acceptable quality level (AQL)
According to the inspection results, if the number of defects found is not higher than the acceptance judgment number, the batch is judged to have passed the B group inspection, otherwise it is judged to have failed the B group inspection.
4.5.4.4 Re-inspection
For batches that have failed the B group inspection, the manufacturer shall analyze the batch of products, find out the causes of the defects, and take corrective measures before resubmitting for inspection. The resubmitted batch shall be separated from the new batch and marked with "resubmitted batch", and stricter inspection shall be adopted.
If the re-inspection is qualified, the batch is still judged to have passed the B group inspection: if the re-inspection is still unqualified, the batch is judged to have failed the B group inspection.
4.5.4.5 Handling of Group B Inspection Samples
If defective products are found in the batches that have passed the Group B inspection, the contractor shall be responsible for repairing them and meet the requirements of the product specifications before they can be delivered in batches according to the contract or order. 4.5.5 Group C Inspection
C inspection shall be carried out on the products of the Group A and Group B inspection batches. 4.5.5.1 Inspection Items
C inspection items shall be in accordance with the provisions of Table 6.
4.5.5.2 Sampling Plan
C sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using a one-time insertion plan with a special inspection level of S-1, and the acceptable quality level (AQL) shall be selected in accordance with the provisions of Table 9. Defect classification shall be in accordance with the provisions of Appendix A and product specifications.
Defect classification
Serious defects
Minor defects
4.5.5.3 Qualification judgment
AQL (Acceptance Quality Level)
According to the inspection results, if the number of defects found is less than the qualified judgment number, the batch of C group inspection is judged to be qualified, otherwise, the batch of C group inspection is judged to be unqualified.
4.5.5.4 Re-inspection
SJ 20733—1999
If the sample fails to pass the C group inspection, the acceptance and delivery of the equipment shall be stopped. The contractor shall notify the qualified appraisal unit of the unqualified situation. After finding out the cause and taking corrective measures, it can be resubmitted for inspection. When resubmitting for inspection, the number of samples shall be increased. All test areas shall be inspected according to the opinions of the qualified appraisal unit. Or only the unqualified items shall be tested or inspected.
If the re-inspection is qualified, the batch can still be judged to have passed the Group C inspection. If the re-inspection is still unqualified, the unqualified situation should be notified to the qualification appraisal unit.
4.5.5.5 Sample processing
Unless otherwise specified, the contractor will repair the discovered or potential damage of the samples after the Group C inspection, and they can be delivered according to the contract or order after passing the Group A and Group B inspections. 4.5.5.6 Inspection cycle
Unless otherwise specified, each submitted batch should be subject to a Group C inspection, but not less than once a year. When there are major changes in the main design, process, components and raw materials of the telephone that have an impact on the performance of the equipment, a Group C inspection should also be carried out.
4.5.6 Group D inspection
Group D inspection should be carried out on the products that have passed the Group A and Group B inspections. 4.5.6.1 Inspection items
Group D inspection items shall be in accordance with the provisions of Table 6.
4.5.6.2 Sampling plan
Samples for group D inspection shall be randomly selected from the products that have passed the group A and group B inspections, and the number of samples shall be specified by the product specifications.
4.5.6.3 Failure
If the sample fails the group D inspection, the acceptance and delivery of the product shall be stopped, and the contractor shall inform the qualified appraisal unit of the failure. After finding out the cause and taking corrective measures, the product may be resubmitted for inspection. If the re-inspection is qualified, the batch is judged to have passed the group D inspection; if the re-inspection is still unqualified, the unqualified situation shall be notified to the qualified appraisal unit.
4.5.6.4 Sample handling
Unless otherwise specified, the contractor of the sample that has passed the group D inspection shall be responsible for repairing and replacing the parts that have consumed all or most of the design service life, and the sample that has passed the group A and group B inspections can be delivered according to the contract or order. 4.5.6.5 Inspection cycle
The D group inspection cycle is determined by negotiation between the ordering party and the contractor. However, when there are major changes in the main design, process, components and raw materials of the product that have a significant impact on the performance of the product, the D group inspection should also be carried out. 4.6 Packaging inspection
4.6.1 Inspection items
The packaging inspection items shall be in accordance with the provisions of Table 10.
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Unless otherwise specified, samples that have passed the Group C inspection shall be delivered according to the contract or order after the contractor repairs the discovered or potential damage and passes the Group A and Group B inspections. 4.5.5.6 Inspection Cycle
Unless otherwise specified, each submitted batch shall undergo a Group C inspection, but not less than once a year. When there are major changes in the main design, process, components and raw materials of the telephone that have an impact on the performance of the equipment, a Group C inspection shall also be conducted.
4.5.6 Group D Inspection
Group D inspection shall be conducted on products that have passed the Group A and Group B inspections. 4.5.6.1 Inspection Items
Group D inspection items shall be in accordance with the provisions of Table 6.
4.5.6.2 Sampling Plan
Group D inspection samples shall be randomly selected from the products that have passed the Group A and Group B inspections, and the number of samples shall be specified by the product specifications.
4.5.6.3 Failure
If the sample fails to pass the D group test, the acceptance and delivery of the product shall be stopped, and the contractor shall inform the qualified appraisal unit of the failure. After finding out the cause and taking corrective measures, the product may be resubmitted for inspection. If the re-inspection is qualified, the batch is judged to have passed the D group test; if the re-inspection is still unqualified, the unqualified situation shall be notified to the qualified appraisal unit.
4.5.6.4 Sample processing
Unless otherwise specified, the contractor of the sample that has passed the D group test shall be responsible for repairing and replacing the parts that have consumed all or most of the design service life, and the sample that has passed the A and B group inspections can be delivered according to the contract or order. 4.5.6.5 Inspection cycle
The D group inspection cycle shall be determined by negotiation between the ordering party and the contractor, but when there are major changes in the main design, process, components and raw materials of the product that have a significant impact on the performance of the product, the D group inspection shall also be carried out. 4.6 Packaging inspection
4.6.1 Inspection items
Packaging inspection items shall be in accordance with the provisions of Table 10.
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Unless otherwise specified, samples that have passed the Group C inspection shall be delivered according to the contract or order after the contractor repairs the discovered or potential damage and passes the Group A and Group B inspections. 4.5.5.6 Inspection Cycle
Unless otherwise specified, each submitted batch shall undergo a Group C inspection, but not less than once a year. When there are major changes in the main design, process, components and raw materials of the telephone that have an impact on the performance of the equipment, a Group C inspection shall also be conducted.
4.5.6 Group D Inspection
Group D inspection shall be conducted on products that have passed the Group A and Group B inspections. 4.5.6.1 Inspection Items
Group D inspection items shall be in accordance with the provisions of Table 6.
4.5.6.2 Sampling Plan
Group D inspection samples shall be randomly selected from the products that have passed the Group A and Group B inspections, and the number of samples shall be specified by the product specifications.
4.5.6.3 Failure
If the sample fails to pass the D group test, the acceptance and delivery of the product shall be stopped, and the contractor shall inform the qualified appraisal unit of the failure. After finding out the cause and taking corrective measures, the product may be resubmitted for inspection. If the re-inspection is qualified, the batch is judged to have passed the D group test; if the re-inspection is still unqualified, the unqualified situation shall be notified to the qualified appraisal unit.
4.5.6.4 Sample processing
Unless otherwise specified, the contractor of the sample that has passed the D group test shall be responsible for repairing and replacing the parts that have consumed all or most of the design service life, and the sample that has passed the A and B group inspections can be delivered according to the contract or order. 4.5.6.5 Inspection cycle
The D group inspection cycle shall be determined by negotiation between the ordering party and the contractor, but when there are major changes in the main design, process, components and raw materials of the product that have a significant impact on the performance of the product, the D group inspection shall also be carried out. 4.6 Packaging inspection
4.6.1 Inspection items
Packaging inspection items shall be in accordance with the provisions of Table 10.
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