SJ 20578-1996 General specification for blocking communication jammers
Some standard content:
Military standard for the electronics industry of the People's Republic of China FL5865
SI 20578-96
General specification for
barrage communication jammers1996-08-30 Issued
1997-01-01 Implementation
Approved by the Ministry of Electronics Industry of the People's Republic of China 1 Scope
1.1 Subject matter
1.2 Scope of application
2 Referenced documents
3 Requirements
3.1 Qualification
3.2 Design
3.3 Structure
3.4 Appearance quality
3.5 Dimensions
3.6 Weight
3.7 Color
Symbols and codes
Man-machine-environment system engineering
Safety
Maintainability
Interchangeability·
Performance characteristics·
Power adaptability
Environmental requirements
Continuous working time…
Magnetic compatibility·
Reliability
4 Quality assurance regulations
Inspection responsibility
Inspection classification
4.3 Inspection conditions． …
4.4 Authentication test
4.5 Quality consistency test
4.6 Packaging test
4.7 Test method
5 Delivery preparation…
6 Notes.·
6.1 Intended use
6.2 Contents of ordering documents
6.3 Definitions..
Appendix A Defect classification (reference part)
Appendix B Weighting coefficients of various types of failures in reliability test (reference part) times
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People's Republic of China Electronic Industry Military Standard General specification for barrage communication Jammers
General specification for barrage communication Jammers1 Scope
1.1 Subject matter
SI 20578 -96
This specification specifies the requirements, quality assurance provisions and delivery preparation of blocking communication jammers (hereinafter referred to as \jammers\).
1.2 Scope of application
This specification applies to ground, ship-borne and airborne blocking communication jammers, and is the basic basis for the development, production, acceptance of equipment and the preparation of product specifications.
2 Referenced documents
GJB 4.7—87
GJB 4.11--87
GJB 4. 13—87
Environmental test for ship electronic equipmentVibration testEnvironmental test for ship electronic equipmentSalt spray testEnvironmental test for ship electronic equipmentEnclosure waterproof testRequirements for electromagnetic emission and sensitivity of military equipment and subsystemsRequirements for airborne equipment and subsystems (including corresponding ground auxiliary equipment) (Class A1)GJB151.4-86Requirements for electromagnetic emission and sensitivity of military equipment and subsystemsRequirements for equipment and subsystems in ground installations (fixed and mobile, including tracked and wheeled vehicles) (Class A3)GJB151.5-86Requirements for electromagnetic emission and sensitivity of military equipment and subsystemsRequirements for equipment and subsystems in surface ships (Class A4)
GJB 152--86
GJB 179—86
Count sampling inspection procedures and tables for electromagnetic emission and sensitivity measurement of military equipment and subsystems
General technical conditions for military communication equipment Design and manufacturing requirements GJB 367.1-87
GJB367.2—87 General technical conditions for military communication equipment Environmental test method GJB367.3—87 General technical conditions for military communication equipment Reliability identification test and acceptance test method GJB367.5—87 General technical conditions for military communication equipment Packaging, transportation and storage requirements GIB368.3—87 General specifications for equipment maintainability Maintainability requirements for the application of commonly used parts GJB 368.5—87
GJB 11S0--91
GJB 1753—93
GJB 2090—94
GIB 1283--77
General Specification for Equipment Maintainability Maintainability Test and Assessment Requirements for Electrical Assembly of Electronic Countermeasure Equipment
Safety Requirements for Communication Countermeasure Equipment
Technical Parameters of Aiming Communication Jammer Test Methods Quality Inspection of Metal Coating and Chemical Treatment Layer Issued by the Ministry of Electronics Industry of the People's Republic of China on August 30, 1996 and implemented on January 1, 1997
3 Requirements
3.1 Qualification Appraisal
SJ 20578-96
The jammer submitted in accordance with this specification shall be a jammer that has been qualified or approved for finalization. 3.2 Design
3.2.1 The design of the structure, safety, maintainability, man-machine-environment system engineering, interchangeability, electromagnetic compatibility, reliability, etc. of the jammer shall meet the requirements of Chapter 1 of GIB 367,1 in addition to the requirements of this specification. 3.2.2 The electrical assembly of the jammer shall comply with the relevant provisions of GJB1150. 3.3 Structure
The structure of the jammer shall have sufficient mechanical strength and measurement, be firm, reliable, safe, and easy to install, maintain and carry. The appearance of the equipment is novel, beautiful and generous. 3.4 Appearance quality
The outer surface of the jammer shall be free of dents, bumps, cracks, deformations, etc. The coating shall be solid, without blistering, cracking and shedding; metal parts shall not have rust and other mechanical damage; fasteners shall not be loose. 3.5 Dimensions
The dimensions of the jammer shall comply with the provisions of Appendix C (reference part) in GB367.1, and the specific dimensions shall be specified by the product specifications. 3.6 Weight
Without affecting the performance, maintenance and life, try to make the volume small and the weight light. Its weight shall meet the tactical and technical requirements of the equipment or be specified by the product specifications.
3.7 Color
The color of the jammer should be selected according to the provisions of Article 1.20 of GIB367.1 and different application occasions. 3.8 Signs and codes
The signs should be clear and firm, and the following contents should be marked in obvious places: the name or trademark of the contractor;
Equipment model, name (or code):
Product serial number, manufacturing date.
3.9 Man-machine-environment system program
3.9.1 When designing and developing the jammer, the design criteria and principles of ergonomics should be followed to achieve the purpose of human-machine safety, improve work efficiency, and give full play to the effectiveness of the jammer in operation, control, maintenance and other activities. 3.9.2 In the design of the jammer, the following factors should be considered: a. Easy operation;
b. The location of the keyboard and display should be arranged to facilitate operation and observation; c. Easy maintenance.
3.10 Safety
The safety of the jammer shall comply with the relevant provisions of GJB1753. 3.11 Maintainability
3.11.1 The mean time to repair (MTTR) of the jammer of the forbidden level shall not exceed 0.5h. 3.11.2 In addition to meeting the requirements of Article 1.6 of GJB367.1 and GIB368.3, the jammer's maintainability requirements shall also have a white check function, and not be able to isolate the fault to a replaceable unit. The reliability of the self-checking device shall be higher than the reliability of other components of the jammer. When the self-checking device fails, it shall not affect the normal operation of the jammer. —2
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3.12 Interchangeability
SJ 20578-96
The interchangeability of the jammer shall comply with the requirements of Articles 1 and 7 of GJB367.1. After replacing the same components, assemblies and parts of the jammer, the jammer should be able to work normally without adjustment; after a slight adjustment, it should be able to meet the electrical performance requirements. After interchanging the units or modules, the performance indicators of the jammer should meet the requirements. 3.13 Performance characteristics
3. 13.1 Basic functions (see 4.7.13.1) The jammer should generally have the following basic functions; a. Conversion of interference parameters;
b. Display (or indication) function;
c. Protection function;
d. Self-test function.
Specific functional requirements are specified by the product specifications. 3.13.2 Output power (see 4.7.13.2) The output power levels can be divided into 5, 20, 50, 100, 200, 400, 1000W, etc., and the specific requirements are specified by the product specifications. 3.13.3 Output power flatness (see 4.7.13.3) Output power flatness shall generally not exceed 2dB, and the specific requirements shall be specified by the product specifications. 3.13.4 Harmonic suppression (see 4.7.13.4) Harmonic suppression shall generally be greater than 40dB, and the specific requirements shall be specified by the product specifications. 3.13.5 Spurious suppression (see 4.7.13.5) Spurious suppression shall generally be greater than 45aB. The specific requirements shall be specified by the product specifications. 3.13.6 Blocking bandwidth (see 4.7.13.6) The specific requirements of blocking bandwidth shall be specified by the product specifications. 3.13.7 Spectral flatness (see 4.7.13.7) The specific requirements of spectral flatness shall be specified by the product specifications. 3.13.8 Sweep frequency (see 4.7.13.8) The specific requirements of sweep frequency shall be specified by the product specifications. 3.13.9 Interference pattern (see 4.7.13.9) The interference pattern is generally noise frequency modulation, and the specific requirements shall be specified by the product specifications. 3.13.10 Interference bandwidth (see 4.7.13.10) The interference bandwidth should generally be greater than the frequency of the frequency sweep. The specific requirements are specified by the product specifications. 3.13.11 Frequency deviation (see 4.7.13.11) The frequency deviation should generally be equal to (or greater than) the frequency of the frequency sweep. The specific requirements are specified by the product specifications. 3.13.12 Operating frequency range (now 4.7.13.12) According to different tactical and technical requirements, the operating frequency range can be HF, VHF, UHF or a combination of frequency bands, etc. The specific requirements are specified by the product specifications.
3.13.13 Output impedance (see 4.7.13.13) The output impedance of the jammer should generally be 500m
3.14 Power adaptability
The power adaptability of the jammer shall comply with the requirements of GJB367.1. The specific requirements are specified by the product specifications. 3.14.1 Under the following conditions, the indicators of the jammer shall meet the requirements specified in the product specifications: SJ 20578-96 When AC power is used, the allowable voltage variation range is 1% of the nominal value, and the allowable frequency variation range is ±5% of the nominal value; When DC power is used, the allowable voltage variation range is 1% of the nominal value. 3.14.2 When the power supply voltage changes by 15% of the nominal value, the jammer should not be damaged. 3.15 Environmental adaptability 3.15.1 Low temperature The low temperature requirements of ground and ship-borne jammers shall comply with the provisions of the severity level in Chapter 3 of "401 Low-temperature Test" in GJB367.2, and the low temperature requirements of airborne jammers shall comply with the provisions of the severity level in Chapter 3 of \414 Temperature-Altitude Test\ in GJB367.2. The specific requirements shall be specified by the product specifications. 3.15.2 High Temperature
The high temperature requirements of ground and shipborne jammers shall comply with the provisions of the severity level in Chapter 3 of \402 High Temperature Test in GJB367.2, and the high temperature requirements of airborne jammers shall comply with the provisions of the severity level in Chapter 3 of \414 Temperature-Altitude Test in GJB367.2. The specific requirements are specified by the product specifications. 3.15.3 Heat
The damp heat requirements of the jammer shall comply with the provisions of the severity level in Chapter 3 of \411 Damp Heat Test in JB367.2, and the specific requirements are specified in the product specifications.
3.15.4 Shock
The shock requirements of the jammer shall comply with The requirements for the severity level of the vibration test shall be in accordance with the provisions of GJB367.2\408 Impact test\Chapter 4. The specific requirements are specified by the product specifications.
3.15.5 Vibration
The vibration requirements of ground and airborne jammers shall comply with the provisions of the severity level of the vibration test\Chapter 4 in GJB367.2\409; the vibration requirements of shipborne jammers shall comply with the provisions of the relevant test levels in Chapter 2 of GJB4.7. The specific requirements are specified by the product specifications.
3.15.6 Low pressure
The low pressure requirements of the jammer shall comply with the severity level of the low pressure test\Chapter 3 in GJB367.241\403 Low pressure test 3.15.7 Rainfall
The ground jammer's rainproofing shall comply with the waterproofing performance requirements of Article A in Chapter 5 of GJB367.2\410 Rain Test; the waterproofing requirements of shipborne jammers shall comply with the provisions of GJB4.13, and shall be specified by product specifications according to different application sites. 3.15.8 Mold
The sample shall comply with the provisions of the severity level in Chapter 3 of "412 Mold Test" in GJB367.2. After the mold test, only the grade or grade 1 mold specified in the standard is allowed to grow. The specific requirements are specified by the product specification. 3.15.9 Salt spray||t t||The metal coating samples on steel and copper parts shall comply with the provisions of GJB4.11; the severity of the neutral salt spray corrosion test of the anodized and chemically oxidized samples of aluminum parts shall comply with the provisions of Appendix B (reference part) of SI1283. The qualification requirements of other materials after salt spray test shall be implemented in accordance with relevant standards. 3.15.10 Temperature and altitude
The temperature and altitude requirements of the jammer shall comply with the provisions of the severity level in Chapter 3 of "414 Temperature-Altitude Test" in GJR367.2. The specific requirements are specified by the product specifications. 3.15.11 Temperature shock
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SI 20578-96
The temperature shock requirements of the jammer shall be in accordance with the provisions of the severity level in Chapter 3 of the \405 temperature shock test in GJB367.2, and the specific requirements shall be specified by the product specifications. 3.15.12 Other environmental requirements
Other environmental requirements shall be specified by the product specifications. 3.16 Continuous working time
The continuous working time shall be determined according to the power level and tactical use requirements, and the specific requirements shall be specified by the product specifications. 3.17 Electromagnetic compatibility
The electromagnetic compatibility of airborne, ground and shipborne jammers shall comply with the relevant provisions of GJB151.2, GIB151.4 and GJB151.5 respectively, and the specific requirements shall be specified by the product specifications. 3.18 Reliability
The mean time between failures (MTBF) of the jammer shall be 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 items described in the specification. 4.1.1 Qualified Responsibilities
All flat scramblers must meet all requirements of Chapters 3 to 5 of the specification: The inspections specified in this specification shall become an integral part of the contractor's entire inspection system or quality management system. If the contract includes inspection requirements not specified in this specification, the contractor shall also ensure that the ten scramblers submitted for acceptance meet the requirements. Quality consistency sampling does not allow the submission of knowingly defective flat scramblers, nor does it allow the ordering party to accept defective flat scramblers. 4.2 Inspection Classification
The inspections specified in this specification are divided into:
a. Appraisal inspection;
b. Quality consistency inspection.
4.3 Inspection conditions
Unless otherwise specified, all inspections specified in this specification shall be carried out under the following standard atmospheric conditions: Temperature: 15-35℃;
Relative humidity: 20%-80%;
Air pressure: Air pressure of the test site,
4.4 Qualification inspection
Qualification inspection is generally carried out when the design and production of the dynamometer are finalized. However, when there are major changes in the main design, process components and materials of the dynamometer that affect the important performance of the dynamometer and make the original qualification results no longer valid, qualification inspection should also be carried out.
Qualification inspection shall be carried out in a laboratory approved by the ordering party or the superior qualification agency. 4.4.1 Number of samples
The number of samples for qualification inspection shall generally not be less than 2, 4.4.2 Inspection items and sequence
The inspection items and sequence are shown in Table 1.
Inspection items
Appearance quality
Mark and code
Man-machine-environment system engineering
Safety
Maintainability
Interchangeability
Basic functions
Output power
Output power flatness
Harmonic suppression
Spurious suppression
Block bandwidth
Spectral flatness
Sweep frequency
Interference pattern
Interference bandwidth
Working frequency range
Output impedance
Power supply adaptability
Low pressure
SI20578-96
Table 1 Inspection items
Quality consistency inspection
Technical requirements
Chapter number
Inspection method
Chapter number
4.7.13.10
4.7.13.11
4.7.J3.12
4.7.13.13
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Test Items
Temperature-Altitude
Temperature Shock
Continuous Working Time
Electromagnetic Compatibility
Duty
ST 20578-96
Continued Table 1
Quality Conformity Test
Group A|Group B Group C
Technical Requirements
Chapter No.
Test Method
Chapter No.
4.7.15.10
4.7.15.11
Note: ① In the table, the symbol “C\” indicates a mandatory item; \^\ indicates an optional item as specified in the product specification or contract; and \ indicates an item not to be performed. The order of environmental tests shall be specified by the product specification. 4.4.3 Qualification Criteria
When all inspection items meet the requirements of Chapter 3 and Chapter 5 on average, the identification inspection is considered qualified. If any inspection item does not meet the specified requirements, the inspection should be suspended. The contractor should analyze 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 after continued inspection, 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 the test data or qualified certification data of the jammer according to the requirements of the ordering party or the superior identification agency. Generally, it is submitted once a year. 4.5 Quality Consistency Inspection
4.5.1 Inspection Grouping
Quality consistency inspection is divided into groups A, B, C, and D. 4.5.2 Formation of inspection lot
The formation of inspection lot shall comply with the provisions of Article 3.6 of GJB 179. 4.5.3 Group A inspection
Group A inspection mainly checks the characteristics that are easily affected by changes in production process or production skills, as well as the performance that is crucial to achieving the predetermined requirements (i.e., the inspection of the main performance). 4.5.3.1 Inspection items
The inspection items of Group A are shown in Table 1.
4.5.3.2 Full inspection
100% of the inspection lot submitted by the contractor shall be subject to Group A inspection. The inspection lot quality level (acceptable quality level) is expressed in terms of the number of defects per 100 units of product. According to the jammer use requirements and with reference to historical data, the ordering party and the contractor shall negotiate and stipulate. If there are no other regulations, it is recommended to use the following values: Severe defects: 6.5, 10, 15, 25;
SJ20578-96
Minor defects: 15, 25, 40, 65.
The calculation method of the number of defects per 100 units is as follows: Total number of defects
Number of defects per 100 units = Total number of units of products to be inspected × 100 Defect classification is shown in Appendix A (reference).
4.5.3.3 Qualification criteria
According to the inspection results, if the number of defects found is not greater than the specified value, the batch of Group A inspection is judged to be qualified; otherwise, the batch of Group A inspection is judged to be unqualified.
Group A inspection does not allow fatal defects. Once fatal defects are found, the batch will be rejected. 4.5.3.4 Re-inspection
For batches that fail the Group A inspection, the contractor shall analyze the batch of jammers, find out the causes of defects 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 pass the Group A inspection; if the re-inspection is unqualified, the batch is judged to fail the Group A inspection.
4.5.3.5 Sample processing
For batches that pass the Group A inspection, the contractor shall be responsible for repairing the defective jammers and meet the requirements of the product specifications before they can be delivered in batches according to the contract or order. 4.5.4 Group B inspection
Group B inspection mainly checks the characteristics that are more affected by the quality of parts or jammers, and less affected by the production process or production skills, as well as those that require special tooling or special environment (i.e., the inspection of general performance and special performance). Group B inspection should be carried out on the jammers in the batch that pass the Group A inspection. 4.5.4.1 Inspection Items
The inspection items of Group B are shown in Table 1.
4.5.4.2 Sampling Plan
4.5.4.2.1 Continuous Batch
The sampling inspection of Group B of continuous batches adopts the one-time sampling plan of general inspection level II in GJB179. The acceptable quality level AQL value is recommended to be selected from Table 2.
Table 2 Acceptable Quality Level (AQL)
Defect Category
Major Defect
Minor Defect
4.5.4.2.2 Isolated Batch
The sampling inspection of isolated batches or only a few batches (such as the first batches after the important design, process, and main raw materials are changed before the design is finalized or the production is finalized) adopts the one-time sampling plan of general inspection level II in GJB179. The limit quality (LQ) value and the corresponding acceptable quality level (AQL) value are recommended to be selected from Table 3. 8
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Defect category
Serious defect
Minor defect
SI 20578 96
Table 3 Limit quality (LQ)
Defect classification see Appendix A (reference).
4.5.4.3 Qualification criterion
Pa=10%
According to the inspection results, if the number of defects found is not greater than the qualified judgment number, the batch is judged to be qualified for the group inspection; otherwise, the batch is judged to be unqualified for the group B inspection.
4.5.4.4 Re-inspection
For batches that fail the group B inspection, the contractor shall analyze the batch of hand jammers, find out the causes of the defects and take corrective measures, and then resubmit them for inspection. The resubmitted batches shall be separated from the new batches and marked with "resubmitted batches" and stricter inspection shall be adopted.
If the new inspection is qualified, the batch is still judged to be qualified for the Group B inspection; if the re-inspection is unqualified, the batch is judged to be unqualified for the Group B inspection
4.5.4.5 Sample processing
For the batches that have passed the Group B inspection, the manufacturer shall be responsible for repairing the defective jammers and after they meet the requirements of the product specifications, they can be delivered in batches according to the contract or order. 4.5.5 Group C inspection
Group C inspection shall be carried out on the ten jammers that have passed the Group A and Group B inspections. 4.5.5.1 Inspection items
The inspection items of Group C are shown in Table 1
4.5.5.2 Sampling plan
The number of batch samples shall be determined according to the size of the production batch. Generally, 1 to 2 units are selected from a batch of 10 units (sets), and 2 to 3 units are selected from a batch of more than 11 units (sets).
4.5.5.3 Qualification Criteria
When conducting Group C inspection, if all inspection items meet the requirements of the product specifications, the Group C inspection is judged to be qualified; if any inspection item does not meet the requirements of the product specifications, the Group C inspection is judged to be unqualified. 4.5.5.4 Re-inspection
For batches that fail the Group C inspection, the contractor shall analyze the batch of flat scramblers, find out the causes of the defects and take corrective measures, and then resubmit for inspection. When re-inspecting, the number of samples should be doubled. Re-inspection should be carried out according to the opinions of the ordering party or the appraisal agency. All tests or inspections should be carried out, or only the unqualified items should be tested or inspected. If the re-inspection is qualified, the batch is still judged to be qualified; if the re-inspection is unqualified, the batch is judged to be unqualified in the Group C inspection.
4.5.5.5 Sample handling
Unless otherwise specified, samples that have passed the Group C inspection shall be delivered according to the contract or order after the contractor has repaired the discovered or potential damage and passed the Group A inspection. 4.5.5.6 Inspection schedule
Group C inspection is generally carried out on each batch of production. 4.5.6 Group D inspection
SJ 20578-96
Group D inspection should be carried out on the jammers that have passed the Group A and Group B inspections. 4.5.6.1 Inspection items
The inspection items of Group D are shown in Table 1.
4.5.6.2 Sampling plan
Samples for Group D inspection shall be randomly selected from the jammers that have passed the Group A and Group B inspections. The number of samples to be selected is shown in Table 4. Table 4 Number of samples for group D
4 ～16
17 -- 52
53- 96
4.5.6.3 Sample processing
Number of inserted samples
(sets)
8 ～ 10
Unless otherwise specified, for samples inspected by group D, the contractor shall be responsible for repairing and replacing parts that have consumed all or most of their design service life, and after passing the inspections of groups A and B, they can be delivered according to the contract or order. 4.5.6.4 Inspection cycle
Group D inspection is generally carried out during the first batch of production. When the quality of the machine is stable, it shall be decided by negotiation between the supply and demand parties. 4.5.7 Unqualified
If the sample fails to pass the Group C or Group 1D inspection, the acceptance and delivery of the machine shall be stopped. The contractor shall inform the appraisal agency of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the appraisal agency, or only the unqualified items shall be tested or inspected. If the test is still unqualified, the unqualified situation shall be notified to the appraisal agency. 4.6 Packaging inspection
It shall be carried out in accordance with the provisions of Chapter 6 of GIB367.5. 4.7 Inspection method
4.7.1 General requirements
4.7.1.1 Test environment conditions
Same as Article 4.3
4.7.1.2 Test instruments and meters
. The frequency, output voltage, etc. of the test instruments and meters shall meet the requirements of the product specifications of the tested equipment; h. The test instruments and meters shall pass the metrological verification and shall be within the verification period: center. The accuracy of the test instruments and meters shall be better than one-third of the allowable error of the measured parameters. 4.7.1.3 Power supply for test
a. For DC power supply, the voltage change shall not exceed +2% of the nominal value; b. For AC power supply, the voltage change shall not exceed ±2% of the nominal value, the frequency change shall be less than ±2% of the nominal value, and the waveform distortion coefficient shall be less than 5%.
4.7.2 Design
Check according to the design documents and drawings. 010-
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