SJ 20729-1999 General specification for tactical radio spread spectrum injector parameters
Some standard content:
Military Standard of the Electronic Industry of the People's Republic of China FL5820
SJ 20729—1999
General specification of tactical transceiverHop/spread frequency argument loader1999-11-10Release
1999-12-01Implementation
Approved by the Ministry of Information Industry of the People's Republic of China1 Scope
1.1 Subject matter
1.2 Scope of application
2 Reference documents
3 Requirements
3.1 Qualification
3.2 Design
3.4 Appearance quality
Marking and code
Components, parts and materials
Maintainability
Safety
Interchangeability
Performance characteristics
3.14 Environmental requirements
Electromagnetic compatibility
Reliability
4 Quality assurance regulations
Inspection responsibilities
Inspection categories
Inspection conditions
Identification inspection
Quality consistency inspection
Packaging inspection
4.7 Inspection methods
5 Delivery preparation·
Notes,
6.1 Intended use
6.2 Contents of order documents
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General specification for tactical radio frequency hopping spread spectrum parameter injector of the People's Republic of China Military Standard for Electronic Industry specification of tactical transceiverhop/spread frequency argument loader1Scope
1.1Subject content
SJ20729—1999
This specification specifies the requirements, quality assurance provisions and delivery preparation of tactical radio frequency hopping spread frequency argument injectors (hereinafter referred to as parameter injectors).
1.2Applicable scope
This specification is applicable to naval tactical radio frequency hopping spread frequency argument injectors, and other military services may also use it as a reference. 2Referenced documents
GB6107—85Interface between data terminal equipment data circuit terminating equipment using serial binary data exchange
Requirements for electromagnetic emission and sensitivity of military equipment and subsystemsGJB 151A--97
Measurement of electromagnetic emission and sensitivity of military equipment and subsystemsGJB 152A—97
GJB179A—96 Counting sampling inspection procedures and tables GJB367.1—87 General technical conditions for military communication equipment Design and manufacturing requirements GJB367.2—87 General technical conditions for military communication equipment Environmental test methods GJB367.3—87 General technical conditions for military communication equipment Reliability identification test and acceptance test methods GJB367.5—87 General technical conditions for military communication equipment Packaging, transportation and storage requirements GJB368A—94 General equipment maintainability outline GIB663—89 Safety requirements for military communication equipment and systems GJB2072—94 Maintainability test and evaluation
3 Requirements
3.1 Qualification
Products submitted in accordance with this specification should be qualified products or approved products. 3.2 Design
According to the requirements of Chapter 1 of GJB 367.1. 3.2.1 Composition
Parameter injector is mainly composed of microprocessor and memory circuits. 3.2.2 Functional characteristics
The Ministry of Information Industry of the People's Republic of China issued on November 10, 1999 and implemented on December 1, 1999
SJ 20729--1999
It has the function of automatically receiving the parameters of the programmer and injecting the stored parameters into the corresponding hopping spread spectrum radio station. It adopts anti-power-off storage to prevent data loss. Data transmission adopts sequence transmission, which complies with the relevant provisions of GB6107. 3.3 Structure
It should meet the requirements of Article 1.15 of GJB367.1. It can also adapt to the specified environmental requirements and facilitate operation, control and maintenance. The detailed requirements of the structure are specified by the product specifications. 3.4 Appearance quality
The outer surface of the equipment should be free of dents, bumps, cracks, deformation, etc.: the coating should not bubble, accumulate, crack or fall off, and the color should be coordinated; metal parts should not have rust and other mechanical damage; fastening parts should not be loose. 3.5 Dimensions
Dimensions are specified by product specifications.
3.6 Weight
Specified by product specifications.
3.7 Color
Protective color and identification color should comply with the provisions of Article 1.20 of GJB367.1, and the color of other chassis in the system should be consistent.
3.8 Markings and codes
3.8.1 Nameplate
The product model and name, manufacturer, production date (or number) or production batch number should be indicated. 3.8.2 Other markings
Main components, parts, test points, control switches, etc. should be marked. Power input, output voltage and corresponding values.
3.9 Components, parts and materials
The components, parts and materials used shall comply with the requirements of Chapter 3 of GJB367.1. 3.10 Maintainability
The design for maintainability shall comply with the requirements of Article 1.6 of GJB367.1 and GJB368A. The mean time to repair (MTTR) shall not exceed 15 minutes. 3.11 Safety
It shall comply with the requirements of Article 1.8 of GJB367.1 and GIB663. 3.12 Interchangeability
It shall comply with the requirements of Article 1.7 of GJB 367.1. 3.13 Performance characteristics
3.13.1 Parameter injection (see Article 4.7.12.1) Parameters are automatically injected or automatically loaded by another key programmer, a computer or other unit with suitable interface characteristics and communication format.
Should include the following main parameters:
a. Frequency range and interval
Frequency range: 3887.975MHz.
Frequency interval: 50kHz.
b. Number of channels
100.
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c. Key
No more than 10 groups.
d. Date and time
Year, month, day, hour, minute, second.
e. Station number
00～99, or as specified by product specifications,
SJ 20729—1999
3.13.2 Byte transmission format (see 4.7.12.2) The byte transmission format is shown in Figure 1.
Start symbol
OFFH Frequency
Next channel
←Time
L Station number
Byte transmission format
3.13.3 Data transmission (see 4.7.12.3) 3.13.3.1 Frequency data transmission
Frequency data transmission is shown in Table 1.
Table 1 Frequency data transmission
Checksum
3.13.3,2 channel data transmission
3.13.3.2.1 Single channel data transmission
Single channel data transmission is shown in Table 2.
Start character, start bit
Frequency mark, indicating that the transmission is frequency
Refers to the frequency table number
Frequency data
Checksum
0, 1 (or other table number)
The transmitted frequency is two bytes, the high bit is in front, the low bit is in the back, such as sending: 30.00MHz, then MP=30LV=00
Two bytes, low bit first and then quotient bit
Checksum
3.13.3.2.2 All channel data is sent
All channel data is sent as shown in Table 3.
Checksum
3.13.3.3 Key data transmission
Key data transmission see Table 4.
AAEB 1
Checksum
3.13.3.4 Time (TOD) data transmission
Time (TOD) data transmission see Table S.
SJ 20729—1999
Table 2 Single channel data transmission
Start character, start bit
Channel mark, indicating that the transmission is channel
Referring to the number 0~-99
X--Key number (0~9)
Y-Frequency table number
Z—Network number (000~127)
Two bytes, low bit first and high bit later
Table 3 All channel data transmission
Start character, start bit
Channel mark, indicating that the transmission is channel
Referring to the channel number 0~-99
X1—Channel 1 key number (0~9)
Y1-Channel [frequency table number
Z1Channel 1 number (000~127)
Xn—Channel n key number (0~9)
Key number (0~-9)
Yn Channel n Frequency table number
Zz Channel network number (000~127)
Two bytes, low bit first then quotient bit
Table 4 Key data transmission
Start symbol, start bit
Key flag, indicating that the transmission is a secret
Refers to the secret number 0~9
First line of key data
The sent key is 16 bytes, 2 bytes per line8th line of key data
Two bytes, low bit first then high bit
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TOD flag
Checksum
3.13.3.5 Station number data transmission
Station number data transmission see Table 6,
Checksum
SJ 20729--1999
Table 5 Time data transmission
Start symbol, start bit
Indicates that the transmission is TOD
Refers to the key number 0~9
Transmits the time data that has been converted into jumps
A total of 5 bytes
Two bytes, first low bit and then high bit
Table 6 Station number data transmission
Start symbol, start bit
Station number mark, indicates that the transmission is the station number
Refers to the key number 0~9
XX----Station number (00~99)
Two bytes, first low bit and then high bit
3.13.4 Conformity of injection and transmission parameters (see Article 4.7.12.4) The parameters injected and sent should comply with the requirements of the programmer. 3.13.5 Transmission rate (see 4.7.12.5) 300 bit/s or 1 200 bit/s.
3.13.6 Transmission code (see 4.7.12.5) HEX code or BCD code (frequency is BCD code). 3.14 Environmental requirements
3.14.1 Temperature
3. 14. 1. 1 Low temperature
T Operating temperature: -10°C.
Storage temperature: -40°C.
3. 14. 1. 2 High temperature
T Operating temperature: 55°C.
Storage temperature: 65°C.
3.14.1.3 Extreme ambient temperature
When working at the extreme ambient temperature, the final inspection shall meet the requirements of Article 3.13. 3.14.2 Impact
According to the basic design test in Table 408-1 of GJB367.2 "408 Impact Test", the pulse waveform is a half-positive pulse, 15-
SJ 20729—1999
Each surface (except the panel) is impacted 3 times, for a total of 15 times. The final inspection shall meet the requirements of Article 3.13. 3.14.3 Sinusoidal vibration
According to the provisions of GJB367.2 "409 Vibration Test" Table 409-1 Curve V, three mutually perpendicular axes are vibrated for 30 minutes each. After vibration, fixed parts should not be loose or move, and movable parts should not be stuck. The final inspection shall meet the requirements of Article 3.13.
3.14.4 Condensation heat
According to the requirements of Method 1 of GJB367.2 "411 Wet Heat Test", the intermediate inspection and final inspection shall meet the requirements of Article 3.13.
3.14.5 Mold
According to According to the requirements of GJB367.2 "412 Bacteria Test", mildew or corrosion after the test should not be greater than level 2, and the electrical performance after recovery shall meet the requirements of Article 3.13.
3.14.6 Salt Spray
According to the requirements of Salt Spray Method 1 of GJB367.2 "413 Salt Spray Test", after the test, there should be no obvious blistering, pits or visible damage caused by loose metal surface plating on the shell surface parts, and surface degradation and corrosion. Finally, the electrical performance is checked to meet the requirements of Article 3.13. 3.15 Power Consumption
External power supply: DC5V.
DC power consumption: maximum 0.02W.
3.16 Electromagnetic Compatibility
Should meet the requirements specified in GJB151A. ||tt ||3.17 Reliability
It shall comply with the provisions of Article 1.3.1 of GJB367.1. The mean time between failures (MTBF) (8> shall not be less than 2400h, or as specified by the product specifications.
4 Quality Assurance Provisions
4.1 Inspection Responsibility
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 item described in the specification. 4.1.1 Qualification Responsibility
All products must comply with all requirements of Chapter 3 and Chapter 5 of the specification. The inspections specified in this specification shall become an integral part of the contractor's entire inspection system or quality outline. If the contract includes this For inspection requirements not specified in the specification, 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 can the ordering party be required to accept defective products. 4.2 Inspection classification
The inspections specified in this specification are:
a. Identification inspection:
b. Quality consistency inspection.
4.3 Inspection conditions
4.3.1 Unless otherwise specified, all inspections specified in this specification shall be carried out under the following normal test atmospheric conditions: a. Temperature: 15~35C;
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b. Relative humidity: 20%~80%
C. Steam pressure: test site pressure.
SJ 20729--1999
4.3.2 Unless otherwise specified, during the inspection, the power supply voltage shall be within the range of +2% of the rated value, and the power supply frequency shall be within the range of ±2% of the rated value.
4.3.3 The test instruments used should have sufficient accuracy and stability, and their precision should be one order of magnitude or one third higher than the precision of the measured index.
4.3.4 The test instruments used should be qualified by metrology and within the validity period. 4.4 Identification and inspection
Identification and inspection are generally carried out when the equipment is designed and finalized for production, but identification and inspection should also be carried out when there are major changes in the main design, process, components and materials of the equipment, which affect the important performance of the equipment and make the original identification conclusion no longer valid.
Identification and inspection should be carried out in a laboratory or site (institute) approved by the ordering party or the superior identification agency. 4.4.1 Number of samples
The number of samples for identification and inspection should generally not be less than 3 units, or as specified by the product specification: 4.4.2 Inspection items
Identification and inspection items are shown in Table 7.
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 should conduct a retrospective analysis of the unqualified items, find out the causes of the defects and take corrective measures, and then continue to inspect the unqualified items and related items. If all inspection items meet the specified requirements, the identification inspection is still considered qualified; if there is still an item that does not meet the specified requirements after continued inspection, it is considered unqualified. 4.4.4 Maintenance of Qualification for Identification
In order to maintain the qualification for identification inspection, the contractor should provide product test data or qualification certification data annually (quarterly or monthly) according to the requirements of the ordering party or the superior identification agency. 4.5 Quality consistency inspection
4.5.1 Inspection grouping
Quality consistency inspection is divided into groups A, C and D. 4.5.2 Formation of inspection batches
The formation of inspection batches shall comply with the provisions of Article 5.4.6 of GJB179A. 4.5.3 Inspection items
The inspection items are shown in Table 7.
4.5.4 Group A inspection
4.5.4.1 Sampling plan
100% of the inspection batch products submitted by the contractor shall be subject to Group A inspection. The batch quality (expressed as the number of defects per 100 units of products) shall be specified by the product specification or contract. The defect classification shall be specified by the product specification.
Inspection items
Appearance quality list
Marking and code
Optical components, parts and materials
Maintainability
Safety
Interchangeability
Performance characteristics
Parameter injection
Byte transmission mode
Data transmission
Conformity of injection and transmission parameters
Transmission rate
Transmission code
Environmental requirements
Sinusoidal vibration
Electromagnetic compatibility
Reliability
28 Packaging
SJ 20729—1999
Identification inspection
Quality consistency inspection
Specified by product specifications
Specified by product specifications
Required
Chapter number
Note: "" indicates items to be inspected, "△" indicates optional items: "一" indicates items not to be inspected, 4.5.4.2 Qualification criteria
Inspection method
Chapter number
Adopt the method of batch by batch inspection to eliminate defective products. According to the inspection results, if the number of defects found is equal to or less than the specified value, the batch A is judged to be qualified for inspection. Otherwise, the batch A group inspection is judged to be unqualified.
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SJ 20729--1999
Group A inspection does not allow fatal defects, and if fatal defects are found, the batch will be rejected. 4.5.4.3 New inspection
For batches that fail the Group A inspection, the contractor shall analyze the batch, find out the cause of the defect and take corrective measures before resubmitting for inspection. The resubmitted batch shall be separated from the new batch and marked with "resubmitted batch". 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.
4.5.4.4 Sample processing
If defective products are found in the batch that passes the Group A inspection, the contractor shall be responsible for repairing them and the batch can be delivered after they meet the requirements of the product specifications. 4.5.5 Group C inspection
Group C inspection shall be carried out on the products in the batch that pass the Group A inspection. 4.5.5.1 Sampling plan
The sampling inspection of group C shall be carried out in accordance with the relevant provisions of GJB179A, and the normal inspection sampling plan of general inspection level II shall be adopted. The acceptable quality level (AQL) shall be selected from Table 8. The defect classification shall be specified by the product specification.
Defect classification
Serious defectswwW.bzxz.Net
Minor defects
4.5.5.2 Qualification determination
Acceptable quality level (AQL)
According to the inspection results, if the number of defects found is not greater than the qualified determination number, the batch of group C inspection shall be determined to be qualified, otherwise the batch of group C inspection shall be determined to be unqualified.
4.5.5.3 Re-inspection
If the sample fails the group C inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the superior appraisal agency of the unqualified situation. After finding out the cause and taking corrective measures, all tests or inspections shall be re-performed, or only the unqualified items shall be tested or inspected, according to the opinions of the ordering party or the superior appraisal agency. When re-inspecting, a stricter inspection shall be adopted.
If the re-inspection is qualified, the C group inspection is judged to be qualified: if the re-inspection is still unqualified, the unqualified situation shall be notified to the superior appraisal agency.
4.5.5.4 Sample processing
Unless otherwise specified, the samples that have passed the C group inspection can be delivered according to the contract or order after the contractor repairs the discovered or potential damage and passes the A group inspection again. 4.5.5.5 Inspection cycle
a. When the product is normally produced in continuous batches, it is generally conducted once a yearb. Each submission batch of isolated batches of products:
c. When the product is officially produced, if there are major changes in structure, materials, processes, etc., which may affect product performance; d. When the superior quality supervision agency makes a request. 4.5.6 Group D inspection
Group D inspection shall be conducted on products that have passed the Group A inspection. -9
4.5.6.1 Batch sampling plan
SJ 20729—1999
Group D inspection samples shall be randomly selected from samples of the Group A inspection batch. The number of samples shall be specified by the product specification. 4.5, 6.2 Non-conformity
If the sample does not pass the Group D inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the superior appraisal agency of the non-conformity. After taking corrective measures, according to the opinion of the superior appraisal agency, all tests or inspections shall be carried out again, or only the non-conforming items shall be tested or inspected. If the test still fails, the superior appraisal agency shall be notified of the non-conformity.
4.5.6.3 Sample handling
Unless otherwise specified, for samples that have passed the Group D inspection, the contractor shall be responsible for repairing and replacing parts that have exceeded half of their life span and parts that are damaged during the test, and after passing the Group A inspection again, they can be delivered in batches according to the contract or order.
4.5.6.4 Inspection cycle
Group D inspection is carried out once a year for continuous batch production. When the batch is small, it can also be carried out according to the requirements of the ordering party. When there are changes in the main design, process, key components and raw materials of the product that have a significant impact on the product performance, Group D inspection should also be carried out.
4.6 Packaging inspection
Packaging inspection shall be carried out in accordance with the relevant provisions of Chapter 6 of GJB 367.5. 4.7 Inspection method
Unless otherwise specified, all test conditions of this specification shall comply with the provisions of Article 4.3. 4.7. 1 Design
Inspection shall be carried out according to the design documents.
4.7. 2 Structure
According to the design documents, use measuring tools to measure or use visual inspection to check. 4.7.3 Appearance quality
Use visual method to identify the quality of the product
4.7.4 Dimension
According to the design documents, use measuring tools to measure or use visual inspection to identify the requirements of the product. 4.7.5 Weight
According to the design documents, use weighing instruments to measure to identify the requirements of the product. 4.7. 6 Color
Use color code to use visual inspection to identify the requirements of the product. 4.7.7 Marking and code
Use visual inspection to identify the requirements of the product. 4.7.8 Components, parts and materials
Inspect according to the design documents and the specified requirements. 4.7.9 Maintainability
According to the relevant methods in GJB2072.
4.7.10 Safety
Inspect according to Article 1.8 of GJB367.1 and the requirements of GJB663. The specific requirements shall be specified by the product specifications. 4.7.11 Interchangeability
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If defective products are found in the batch that has passed the Group A inspection, the contractor shall be responsible for repairing them and the whole batch can be delivered after they meet the requirements specified in the product specifications. 4.5.5 Group C Inspection
Group C inspection shall be carried out on the products in the Group A inspection batch. 4.5.5.1 Sampling Plan
Group C sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using the normal inspection sampling plan of general inspection level II, and the acceptable quality level (AQL) shall be selected from Table 8. The defect classification is specified by the product specification.
Defect Classification
Serious Defect
Minor Defect
4.5.5.2 Qualification Determination
Acceptable Quality Level (AQL)
Based on the inspection results, if the number of defects found is not greater than the qualified determination number, the batch of Group C inspection shall be judged to be qualified, otherwise the batch of Group C inspection shall be judged to be unqualified.
4.5.5.3 Re-inspection
If the sample fails to pass the Group C inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the superior appraisal agency of the non-conformity. After finding out the cause and taking corrective measures, all tests or inspections shall be re-performed, or only the non-conforming items shall be tested or inspected according to the opinions of the ordering party or the superior appraisal agency. When re-inspecting, a stricter inspection shall be adopted.
If the re-inspection is qualified, the Group C inspection is judged to be qualified: If the re-inspection is still unqualified, the superior appraisal agency shall be notified of the non-conformity.
4.5.5.4 Sample processing
Unless otherwise specified, the sample that has passed the Group C inspection can be delivered according to the contract or order after the contractor repairs the discovered or potential damage and passes the Group A inspection again. 4.5.5.5 Inspection cycle
a. When the product is in normal continuous batch production, it is generally conducted once a yearb. Each submitted batch of isolated batch products:
c, when the product is officially produced, such as when there are major changes in structure, materials, processes, etc., which may affect product performance; d, when the superior quality supervision agency makes a request. 4.5.6 Group D inspection
Group D inspection should be carried out on products that have passed the Group A inspection. -9
4.5.6.1 Batch sampling plan
SJ 20729—1999
Group D inspection samples should be randomly selected from the samples of the Group A inspection batch. The number of samples is specified by the product specification. 4.5, 6.2 Unqualified
If the sample does not pass the Group D inspection, the acceptance and delivery of the product should be stopped. The contractor should notify the superior appraisal agency of the unqualified situation. After taking corrective measures, according to the opinions of the superior appraisal agency, all tests or inspections shall be carried out again, or only the unqualified items shall be tested or inspected. If the test still fails, the superior appraisal agency shall be notified of the unqualified situation.
4.5.6.3 Sample handling
Unless otherwise specified, for samples that have passed the Group D inspection, the contractor shall be responsible for repairing and replacing parts that have exceeded half of their life span and parts that are damaged during the test, and after passing the Group A inspection again, they can be delivered in batches according to the contract or order.
4.5.6.4 Inspection cycle
Group D inspection is carried out once a year for continuous batch production. When the batch is small, it can also be carried out according to the requirements of the ordering party. When there are changes in the main design, process, key components and raw materials of the product that have a significant impact on the product performance, Group D inspection should also be carried out.
4.6 Packaging inspection
Packaging inspection shall be carried out in accordance with the relevant provisions of Chapter 6 of GJB 367.5. 4.7 Inspection method
Unless otherwise specified, all test conditions of this specification shall comply with the provisions of Article 4.3. 4.7. 1 Design
Inspection shall be carried out according to the design documents.
4.7. 2 Structure
According to the design documents, use measuring tools to measure or use visual inspection to check. 4.7.3 Appearance quality
Use visual method to identify the quality of the product
4.7.4 Dimension
According to the design documents, use measuring tools to measure or use visual inspection to identify the requirements of the product. 4.7.5 Weight
According to the design documents, use weighing instruments to measure to identify the requirements of the product. 4.7. 6 Color
Use color code to use visual inspection to identify the requirements of the product. 4.7.7 Marking and code
Use visual inspection to identify the requirements of the product. 4.7.8 Components, parts and materials
Inspect according to the design documents and the specified requirements. 4.7.9 Maintainability
According to the relevant methods in GJB2072.
4.7.10 Safety
Inspect according to Article 1.8 of GJB367.1 and the requirements of GJB663. The specific requirements shall be specified by the product specifications. 4.7.11 Interchangeability
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If defective products are found in the batch that has passed the Group A inspection, the contractor shall be responsible for repairing them and the whole batch can be delivered after they meet the requirements specified in the product specifications. 4.5.5 Group C Inspection
Group C inspection shall be carried out on the products in the Group A inspection batch. 4.5.5.1 Sampling Plan
Group C sampling inspection shall be carried out in accordance with the relevant provisions of GJB179A, using the normal inspection sampling plan of general inspection level II, and the acceptable quality level (AQL) shall be selected from Table 8. The defect classification is specified by the product specification.
Defect Classification
Serious Defect
Minor Defect
4.5.5.2 Qualification Determination
Acceptable Quality Level (AQL)
Based on the inspection results, if the number of defects found is not greater than the qualified determination number, the batch of Group C inspection shall be judged to be qualified, otherwise the batch of Group C inspection shall be judged to be unqualified.
4.5.5.3 Re-inspection
If the sample fails to pass the Group C inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the superior appraisal agency of the non-conformity. After finding out the cause and taking corrective measures, all tests or inspections shall be re-performed, or only the non-conforming items shall be tested or inspected according to the opinions of the ordering party or the superior appraisal agency. When re-inspecting, a stricter inspection shall be adopted.
If the re-inspection is qualified, the Group C inspection is judged to be qualified: If the re-inspection is still unqualified, the superior appraisal agency shall be notified of the non-conformity.
4.5.5.4 Sample processing
Unless otherwise specified, the sample that has passed the Group C inspection can be delivered according to the contract or order after the contractor repairs the discovered or potential damage and passes the Group A inspection again. 4.5.5.5 Inspection cycle
a. When the product is in normal continuous batch production, it is generally conducted once a yearb. Each submitted batch of isolated batch products:
c, when the product is officially produced, such as when there are major changes in structure, materials, processes, etc., which may affect product performance; d, when the superior quality supervision agency makes a request. 4.5.6 Group D inspection
Group D inspection should be carried out on products that have passed the Group A inspection. -9
4.5.6.1 Batch sampling plan
SJ 20729—1999
Group D inspection samples should be randomly selected from the samples of the Group A inspection batch. The number of samples is specified by the product specification. 4.5, 6.2 Unqualified
If the sample does not pass the Group D inspection, the acceptance and delivery of the product should be stopped. The contractor should notify the superior appraisal agency of the unqualified situation. After taking corrective measures, according to the opinions of the superior appraisal agency, all tests or inspections shall be carried out again, or only the unqualified items shall be tested or inspected. If the test still fails, the superior appraisal agency shall be notified of the unqualified situation.
4.5.6.3 Sample handling
Unless otherwise specified, for samples that have passed the Group D inspection, the contractor shall be responsible for repairing and replacing parts that have exceeded half of their life span and parts that are damaged during the test, and after passing the Group A inspection again, they can be delivered in batches according to the contract or order.
4.5.6.4 Inspection cycle
Group D inspection is carried out once a year for continuous batch production. When the batch is small, it can also be carried out according to the requirements of the ordering party. When there are changes in the main design, process, key components and raw materials of the product that have a significant impact on the product performance, Group D inspection should also be carried out.
4.6 Packaging inspection
Packaging inspection shall be carried out in accordance with the relevant provisions of Chapter 6 of GJB 367.5. 4.7 Inspection method
Unless otherwise specified, all test conditions of this specification shall comply with the provisions of Article 4.3. 4.7. 1 Design
Inspection shall be carried out according to the design documents.
4.7. 2 Structure
According to the design documents, use measuring tools to measure or use visual inspection to check. 4.7.3 Appearance quality
Use visual method to identify the quality of the product
4.7.4 Dimension
According to the design documents, use measuring tools to measure or use visual inspection to identify the requirements of the product. 4.7.5 Weight
According to the design documents, use weighing instruments to measure to identify the requirements of the product. 4.7. 6 Color
Use color code to use visual inspection to identify the requirements of the product. 4.7.7 Marking and code
Use visual inspection to identify the requirements of the product. 4.7.8 Components, parts and materials
Inspect according to the design documents and the specified requirements. 4.7.9 Maintainability
According to the relevant methods in GJB2072.
4.7.10 Safety
Inspect according to Article 1.8 of GJB367.1 and the requirements of GJB663. The specific requirements shall be specified by the product specifications. 4.7.11 Interchangeability
KANiKAca5 Weight
According to the design documents, use a weighing instrument to measure and identify the product requirements. 4.7. 6 Color
Use color codes to identify the product requirements by intuitive methods. 4.7.7 Marks and codes
Use intuitive methods to identify the product requirements. 4.7.8 Components, parts and materials
Inspect according to the design documents and the specified requirements. 4.7.9 Maintainability
According to the relevant methods in GJB2072.
4.7.10 Safety
Inspect according to Article 1.8 of GJB367.1 and the requirements of GJB663, and the specific requirements are stipulated by the product specifications. 4.7.11 Interchangeability
KANiKAca5 Weight
According to the design documents, use a weighing instrument to measure and identify the product requirements. 4.7. 6 Color
Use color codes to identify the product requirements by intuitive methods. 4.7.7 Marks and codes
Use intuitive methods to identify the product requirements. 4.7.8 Components, parts and materials
Inspect according to the design documents and the specified requirements. 4.7.9 Maintainability
According to the relevant methods in GJB2072.
4.7.10 Safety
Inspect according to Article 1.8 of GJB367.1 and the requirements of GJB663, and the specific requirements are stipulated by the product specifications. 4.7.11 Interchangeability
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