SJ 20618-1997 General specification for all-solid-state shortwave broadband transmitter for submarines

SJ 20618-1997 General Specification for All-solid-state Shortwave Broadband Transmitters for Submarines SJ20618-1997 Standard download decompression password: www.bzxz.net

Military Standard of the Electronic Industry of the People's Republic of China FL5820
SJ 20618-97
General specification for solid-state short wave wide band transmitters for submarine Issued on June 17, 1997 Implementation on October 1, 1997 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 Reference documents
3 Requirements
3.1 Conformity assessment
3.2 Design
3.3 Structure
3.4 ​​Appearance quality
3.5 Dimensions
3.6 Weight
3.7 Color
3.8 Product logo
3.9 Safety
3.10 Maintainability
Interchangeability·
Performance characteristics·
Environmental requirements
3.14 Continuous working time.
3.15 Electromagnetic compatibility
3.16 Reliability·
4 Quality Quality assurance regulations
4.1 Inspection responsibility
4.2 Inspection classification
4.3 Environmental conditions
4.4 Identification inspection
4.5 Quality consistency inspection
4.6 Packaging inspection
4.7 Inspection method
4.8 Defect classification
5 Delivery preparation
6 Notes
6.1 Intended use.
6.2 Contents of order documents.
6.3 Definitions·
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People's Republic of China Electronic Industry Military Standard General Specification for Solid-State Short Wave Wide Band Transmitters for Submarines1 Scope
1. Subject Content
SJ 2061897
This specification specifies the requirements, quality assurance provisions, delivery preparation and instructions for solid-state short wave wide band transmitters for submarines (hereinafter referred to as transmitters).
1.2 Scope of Application
This specification applies to 1kW solid-state short wave wide band transmitters in specialized compartments of submarines. 2 Reference documents
GB/T6933-1995 Measurement methods for electrical properties of shortwave single sideband transmittersGIB 150.16--86
GJB 151.6--86
GJB 152—86
GJB 17986
GJB 367.1--87
GJB 367.2-87
GJB 367.3--87
GJB 367.4--87Www.bzxZ.net
GJB 367.5--87
GJB 368.5—87
GJB 763.5—89
GJB 1145—91
GIB 2328-95
SJ 20044—92
3 Requirements
3.1 Qualification
Environmental test methods for military equipmentVibration testRequirements for electromagnetic emission and sensitivity of military equipment and subsystemsRequirements for submersible equipment and subsystems (Class A5)
Electromagnetic emission and sensitivity of military equipment and subsystemsCounting sampling inspection procedures and tables
General technical conditions for military communication equipmentDesign and manufacturing requirementsGeneral technical conditions for military communication equipmentEnvironmental test methodsGeneral technical conditions for military communication equipmentReliability identification test and acceptance test methodsGeneral technical conditions for military communication equipmentAcceptance rulesGeneral technical conditions for military communication equipmentPackaging, transportation and storage requirementsGeneral specifications for equipment maintainabilityTest and evaluation of maintainabilityNoise limits and measurement methods for shipsAir noise measurement for ship equipmentType test and identification test procedures for military communication equipmentGeneral specifications for ship integrated communication systems
Safety requirements for short-wave single-sideband communication equipment. Products submitted in accordance with this specification should be qualified or approved by type. Issued by the Ministry of Electronics Industry of the People's Republic of China on June 17, 1997 and implemented on October 1, 1997
3.2 Design
SJ20618-97
The design of the transmitter shall comply with the provisions of Chapter 1 of GJB367.1. The design of the transmitter shall facilitate its coordination with the antenna and feeder system and have a concealed adjustment function. The design of the transmitter shall enable its main operations and status display to be remotely controlled, and the failure of unit components to be detected and displayed.
The design of the transmitter shall enable it to have ultra-fast alarm and one or more of the following working modes: J3E, J2B, R3E, B8E, B9W.A1A, H2A, H2B, H3E, F1B and F2B. 3.3 Structure
The structure of the transmitter shall comply with the requirements of Articles 1.5 and 1.15 of GJB367.1. The design of the chassis should take into account the various factors mentioned in Article 1.16 of GJB367.1.
The structural design of the transmitter should be standardized, serialized and modular. Generally, it adopts a plug-in type, which can quickly replace spare parts and is easy to install and maintain.
3.4 ​​Appearance quality
The outer surface of the transmitter should be free of dents, scratches, cracks, deformation, etc.; the coating should not bubble, crack or fall off; the metal parts should not have rust and other mechanical damage; the fasteners should not be loose; various signs and text symbols should be clear, and the graphics, text and abbreviations should comply with the relevant standards; various adjustment mechanisms should be smooth and flexible. 3.5 Dimensions
The overall dimensions of the transmitter should comply with the relevant standards and meet the requirements for installation on boats. The height of the chassis (including shock absorbers) should be less than 1700mm and can pass through the inner door of the boat with a diameter of 800mm, and the components should be able to pass through the cabin with a diameter of 580mm. 3.6 Weight
To meet the actual combat requirements, the weight of the transmitter should be reduced as much as possible. The specific weight is specified by the product specification. 3.7 Color
The color of the transmitter is specified by the product specification according to the system requirements. 3.8 Product Logo
The content of the product logo should at least include:
a: Product name and model
b. Production batch number or (and) manufacturing date
e: Manufacturer name (or code)
3.9 Safety
The safety design of the transmitter should comply with the requirements of Article 1.8 of GJB367.1. The safety note requirements should comply with the provisions of SI20044.
Electrical devices above 50V in the transmitter shall have a "dangerous voltage" symbol that complies with regulations. The symbol shall be clear and visible and shall not be erased.
For special components, such as parts containing beryllium oxide materials and electrostatic sensitive components, warning symbols shall be marked on the modules or circuit boards containing these components and on the corresponding circuit diagrams. Instructions for safe use shall be included in the technical specifications and operating instructions.
3.10 Maintenance
The mean time to repair (MTTR) of the transmitter shall not exceed 30 minutes. Maintainability shall comply with the provisions of Article 1.6 of GJB367,1. It shall also have fault display and detection functions.3.11 Replaceability
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SJ 20618-97
The interchangeability of the transmitter shall comply with the requirements of Article 1.7 of GJB367.1. After replacing the same unit module (such as power amplifier, power supply, harmonic filter, etc.), the performance indicators of the transmitter shall comply with the requirements of the product specification. 3.12 Performance characteristics
3. 12. 1 Frequency range (see 4.7.6.1 Item) Frequency range: 2~30MHza
3.12.2 Frequency interval (see Item 4.7.6.2) Frequency interval: 1Hz, 99 channels can be preset. 3.12.3 Output power (Item 4.7.6.3)
Output power: 1000W, 500W, 250W, 125W, 100W (PEP or CW), and continuously adjustable. 3.12.4 Output impedance
Output impedance: 500 unbalanced.
3.12.5 Voltage standing wave ratio (see 4.7.6.4) When the voltage standing wave ratio is not greater than 2, the rated power output should be guaranteed: when the load is short-circuited or open-circuited, the machine should not be damaged. 3.12.6 Stray noise (see 4.7.6.5) Stray noise: ≤-135dB/Hz (100kHz away from the carrier); ≤-160dB/Hz (5% away from the carrier, with post-selector). 3.12.7 Relative audio intermodulation product level (see 4.7.6.6) Relative audio intermodulation product level: ≤-30dB. 3.12.8 Sideband suppression (see 4.7.6.7) Sideband suppression: ≤-55dB.
3.12.9 Carrier suppression (see 4.7.6.8) Carrier suppression: ≤-55dB
3.12.10 In-band noise (see 4.7.6.9) In-band noise: ≤-85dB/Hz (within 300Hz-3kHz from the carrier). 3.12.11 Hum level (see 4.7.6.10) Hum level: ≤-55AB.
3.12.12 Frequency stability (see 4.7.6.11) Frequency stability: better than 1×10~8/d.
3.12.13 Phase jitter (see 4.7.6.12) Phase jitter: ≤4/10msc
3.12.14 Audio frequency modulation characteristics (see 4.7.6.13) Audio frequency modulation characteristics: ≤3dB (300~3000Hz). 3.12.15 Group delay (see 4.7.6.14) Group delay: ≤500μs (600～2880Hz). 3.12.16 Voice input (see 4.7.6.15) a. Level:
Voice: -20~10dBm;
b. Impedance: 600n balanced.
Report: 0dBm
3.12.17 Spurious narrowband RF component (see 4.7.6.16) Harmonic component: ≤-50dB
Parasitic component: ≤70dB.
3.12.18 Activation time (see 4.7.6.17) Activation time: 3.5~7ms.
SJ 20618-97
3.12.19 Power supply and input power (see Article 4.7.6.18) According to the requirements of the order contract, one of the following power supplies can be selected: AC three-phase 380V=%50Hz±5%4kW:
b. AC three-phase 220V*1% 50Hz±5% 4kW;c, DC350~640V
3.12.20 Cooling (see Article 4.7.6.19)
The machine is air-cooled and the noise should be lower than 60cBAg3.13 Environmental requirements
3.13.1 Ambient temperature;
Working temperature: 0~50
Storage temperature: 50-65℃
3.13.2 Wet heat: It shall withstand the severe level test of shipborne communication equipment specified in Chapter 3 of "411 Mixed heat test" in GJB367.2.
3.13.3 Shock: It shall withstand the test specified in Table 408-3 of GJB367.2 (408 Shock test). 3.13.4 Shock: It shall withstand the test specified in Class I of Table 408-4 of "408 Shock test" in GJB367.2. 3.13.5 Vibration: It shall withstand the test specified in Table 9 of GJB 150.16 for water and ships and submarines. 3.13.6 Bacteria exposure: It shall meet the severe level requirements specified in Chapter 3 of "412 Bacteria test" in GJB367.2. The level of long exposure is specified by the product specification.
3.13.7 Salt spray: It should be able to withstand the test specified in GJB367.2 (413 Salt spray test). The salt spray treatment method and test time are specified by the product specifications.
3.14 Continuous working time
Continuous working time: 24h.
3.15 Electromagnetic compatibility
Electromagnetic compatibility should comply with the relevant provisions of GJB151.6. 3.16 Reliability
The mean time between failures MTBF(9) of the transmitter should be greater than 2000h. 4 Quality assurance regulations
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 certification agency has the right to inspect any inspection item described in the specification. 4.1.1 Qualified responsibilities
All products must meet 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 program. If the contract includes inspection requirements not specified in this 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
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The inspections specified in this specification are divided into:
. Identification inspection;
b. Quality consistency inspection.
4.3 Environmental conditions
SJ 20618-97
Unless otherwise specified, various inspections shall be carried out in accordance with the conditions specified in Article 2.1.1 of GJB367.2. 4.4 Identification inspection
Identification inspection is generally carried out when the equipment is designed and finalized for production, but it should also be carried out when there are major changes in the main design, process, components and materials of the equipment that affect the important performance of the equipment and make the original identification conclusion no longer valid. For equipment produced in single piece or in small quantities, identification inspection (technical identification) shall be carried out on the test prototype. 4.4.1 Sample quantity
During identification inspection, the number of prototypes to be drawn and the requirements for the sampled machines shall comply with the requirements of Article 4.12.1 of GJB1145. 4.4.2 Inspection items
The identification inspection items are shown in Table 1.
Appearance quality
Product mark
Safety
Maintainability
Interchangeability
Frequency range
Voltage isolation
Output power
Voltage ratio
Spurious noise
Relative audio intermodulation
Product level
Reverse band suppression
Carrier modulation
Internal noise
Identification and inspection
Quality consistency inspection
Required chapter Article number
Inspection or test method
Article number
Noise level
Frequency stability
Phase jitter
Audio frequency modulation
Group delay
Voice line input level
Spurious emission
Activation time
Power supply and input power
Continuous working time
Electromagnetic compatibility
Reliability
Packaging inspection
Identification inspection
SJ 20618-97
Continued Table 1
Quality consistency inspection
Required article number
3. 12. 18
Note: In the table, \○\ indicates the inspection items to be carried out, "A\" indicates the optional items, and \-\ indicates the items not to be carried out. 4.4.3 Qualification criteria
Chapter number of the inspection or test method
When all inspection items meet the requirements of Chapter 3 and Chapter 5, the identification inspection is judged to be qualified. If any inspection item does not meet the specified requirements, the inspection shall be suspended. The contractor shall 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 requirements, the inspection shall be suspended. If the product meets the specified requirements, it is still judged as qualified for the appraisal inspection; if there are still some items that do not meet the specified requirements after continued inspection, it is judged as unqualified for the appraisal inspection. 一
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4.4.4 Maintaining the qualification for appraisal
SJ20618-97
In order to maintain the qualification for appraisal inspection, the contractor should provide routine test data or qualified certification data of the product according to the requirements of the ordering party or the superior appraisal agency. 4.5 Quality consistency inspection
4.5.1 Inspection grouping
Quality consistency inspection is divided into Group A, Group B, Group C and Group D inspection. 4.5.2 Formation of inspection batch
The formation of inspection batch shall comply with the provisions of Article 3.6 of GJB179. 4.5.3 Group A inspection
4.5.3.1 Inspection items
The inspection items of Group A are shown in Table 1.
4.5.3.2 Sampling plan
100% of the inspection batches submitted by the contractor shall be subject to Group A inspection. The batch quality book of Group A inspection shall be expressed in terms of the number of defects per 100 units of products. The acceptable number of defects per 100 units of products shall be agreed upon by the contractor and the ordering party or selected from the following values: number of serious defects: 10.15, 25;
number of minor defects: 40, 65, 100.
The specific acceptable number of defects per 100 units of products shall be specified by the product specification. For defect classification, see Article 4.8.
4.5.3.3 Qualification criteria
The whole batch shall be inspected and evaluated one by one 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 shall be judged to have passed the Group A inspection, otherwise, the batch shall be judged to have failed the Group A inspection.
Fatal defects are not allowed in the Group A inspection. Once fatal defects are found, the batch shall be rejected. 4.5.3.4 Re-inspection
For batches that fail the Group A inspection, the manufacturer shall analyze the batch of products, identify the causes of the defects and take corrective measures before re-inspection. The batches to be re-inspected shall be separated from the new batches and marked with "resubmitted batch". If the re-inspection is qualified, the batch A group inspection is still judged to be qualified; if the re-inspection is still unqualified, the batch A group inspection is judged to be unqualified. 4.5.4 Group B inspection
4.5.4.1 Inspection items
The inspection items of Group B are shown in Table 1.
4.5.4.2 Sampling plan
The sampling inspection of Group B shall be carried out in accordance with the relevant provisions of GJB179. A normal sampling plan with special inspection level S-3 is adopted, and the acceptable quality level (AQIL) is selected from the following numbers: serious defects: 4.0, 10, 15;
minor defects: 25.40, 65.
When establishing a batch, this specification stipulates that the ordering party's risk is 10%, and the batch quality is expressed in terms of the number of defects per hundred units of products. The root quality LQ value shall correspond to the acceptable quality level in the continuous batch, and in GJB 179. The specific AQL and LQ values ​​are specified in the product specifications or contracts. For defect classification, see Article 4.8.
SJ20618-97
4.5.4.3 Qualification Criteria
According to the inspection results, if a fatal defect is found in the sample, the batch of products is judged to be unqualified in the Group B inspection. If the number of defects in the sample is not greater than the qualified judgment number, the batch of products is judged to be qualified in the Group B inspection. Otherwise, the batch of products is judged to be unqualified in the Group B inspection.
4.5.4.4 Re-inspection
For batches that fail the Group B inspection, the contractor should analyze the batch of products, find out the cause of the defects and take corrective measures, and then re-inspect. The re-inspected batch should be separated from the new batch, and marked with "resubmitted batch", and stricter inspection should be adopted.
If the re-inspection is qualified, the batch of Group B inspection is still judged to be qualified; if the re-inspection is still unqualified, the batch of Group B inspection is judged to be unqualified.
4.5.5 Group A and Group B inspection sample processing
If defective products are found in the batches that have passed the Group A and Group B inspections, 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. 4.5.6 Group C inspection
Group C inspection shall be carried out on the products of the batches that have passed the Group A and Group B inspections. 4.5.6.1 Inspection items
The inspection items of Group C are shown in Table 1.
4.5.6.2 Sampling plan
The sampling plan for Group C inspection is: when the batch is not more than 8 pieces, one piece is selected; when the batch is between 9 and 150 pieces, two pieces are selected; when the batch is more than 150 pieces, three pieces are selected. 4.5.6.3 Qualification Criteria
When all inspection items meet the requirements of Chapter 3 and Chapter 5 during the C group inspection, the C group inspection is considered qualified. If any inspection item does not meet the requirements of Chapter 3 and Chapter 5, the C group inspection is considered unqualified. 4.5.6.4 Re-inspection
If the sample fails to pass the C group 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, the product may be re-inspected. When re-inspecting, the number of samples shall be increased. The re-inspection shall be carried out according to the opinions of the ordering party or the superior appraisal agency, or only the unqualified items shall be tested or inspected.
If the re-inspection is qualified, the C group inspection is considered qualified. If the re-inspection is unqualified, the unqualified situation shall be notified to the superior appraisal agency.
4.5.6.5 Sample processing
Unless otherwise specified, samples that have passed the C group inspection can be delivered according to the contract after the contractor repairs the discovered or potential damage and passes the A and B group inspections. 4.5.6.6 Inspection cycle
In general, the C group inspection should be carried out in any of the following situations:. Trial and design identification of new products:
b. When there are major changes in the structure, materials, and processes of the product, which may affect the product performance; C. During the production of the belt, an inspection should be carried out periodically after a certain amount of production has been accumulated; d. When the product is resumed after a long period of suspension. 4.5.7 D group inspection
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SJ 20618-97
D group inspection should be carried out on the products that have passed the A and B group inspections. 4.5.7.1 Inspection items
The D group inspection items are shown in Table 1.
4.5.7.2 Sampling plan
The D group inspection samples shall be randomly selected from the products that have passed the inspection of Group A and Group B, and the number of samples shall be specified by the product specifications.
4.5.7.3 Sample handling
Unless otherwise specified, for the samples that have passed the D group inspection, the contractor shall be responsible for repairing or replacing the parts that have consumed all or most of the design life, and can be delivered according to the contract after passing the inspection of Group A and Group B. 4.5.7.4 Inspection cycle
The D group inspection shall be carried out in accordance with the requirements of the contract or agreement. 4.5.8 Non-conformity
If the sample does not avoid the inspection of Group C or Group D, 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, all tests or inspections shall be carried out again according to the opinions of the qualified appraisal unit, or only the non-conforming items shall be tested or inspected. If the test is still non-conforming, the non-conformity shall be notified to the superior appraisal agency.
4.5.9 Handling of inspection results
Perform according to the provisions of Chapter 5 of GJB367.4.
4.6 Packaging inspection
Perform according to the relevant provisions of Chapter 6 of GJB367.5. 4.7 Inspection methods
4,7.1 General inspection
For the requirements of 3.3~3.8, use measuring tools or visual inspection to inspect according to the provisions of the design documents. 4.7.2 Functional characteristics
Inspect according to the requirements of 3.2 and the operating instructions in the technical manual. 4.7.3 Safety samples
Inspect according to the requirements of 3.9, use visual inspection and the methods specified in SJ20044. 4.7.4 Maintainability
Inspect according to 2.8 of GJB368.5.
4.7.5 Interchangeability
Inspect according to the requirements of 3.2 and the relevant instructions in the technical manual. 4.7.6 Performance characteristics
4.7.6.1 Frequency range
Distribute the transmitter working frequency to the lowest and highest frequencies, adjust the machine according to the specified method, and use a frequency meter to measure the two frequencies after the specified warm-up time is reached. This is the frequency range. 4.7.6.2 Frequency interval
Use the method of 4.7.6.1, and when the two frequencies are superimposed on the adjacent working frequencies, the difference between the two frequencies measured is the frequency interval.
4.7.6.3 Output power
Perform according to 6.2 of GB/T6933.
4.7.6.4 Voltage Standing Wave Ratio
Measurement block diagram See Figure 1:
Audio Host Generator
SI 20618 - 97
Transmitter
Through-type Power Meter
Dummy Load
b Use a dummy load with a voltage standing wave ratio of 2. After adjusting the machine according to the specified method, adjust the input audio signal level so that 1kW power (PEP or CW) can be output at any frequency within the operating frequency range of the transmitter; c. Terminate the transmitter output end with an N-type short-circuit or open-circuit coaxial connector respectively. Adjust the machine according to the specified method, and the transmitter will not be damaged.
4.7.6.5 Stray Noise
4.7.6.5. 1 Method ~ According to Article 6.20 of GB/T 6933. 4.7.6.5.2 Method 2!
Test block diagram is shown in Figure 2
Transmitter
40dBE1kw）
Figure Fixed liquid attenuator
Variable attenuator
Narrowband crystal
Notch filter (f.)
b. The transmitter sends SSB signal, and the transmitter operating frequency is adjusted to f. +Af (or f.-Af); c. The -60dB attenuator is set to the attenuation 60dB position d. The spectrum analyzer is adjusted to the signal level of OclB; e. Change the operating frequency of the transmitter to f.: Color spectrum
f. Adjust the attenuation of the -60dB attenuator, find the average noise component at f. +Af (or f.-Af) on the spectrum analyzer, and record the attenuation reduced by the attenuator; g. The average noise component measured on the spectrum analyzer plus the attenuation reduction of the attenuator plus 101gBw is the spurious noise per Hz bandwidth relative to the carrier, expressed in dB/Hz (where B is the intermediate frequency bandwidth of the spectrum analyzer). Note: ① Narrowband crystal notch filter. The attenuation should be greater than 60uB; f is 100kHz or 5% of f.
4.7.6.6 Relative audio intermodulation product level
According to 6.3 of GB/T 6933. 4.7.6.7 Sideband suppression
According to 6.4 of GB/T 6933.
4.7.6.8 Clipping suppression
According to 6.6 of GB/T 6933. 4.7.6.9 In-band noise
According to 6.21 of GB/T 6933. 4.7.6.10 Noise level
According to 6.17 of GB/T6933.
4.7.6.11 Frequency stability
According to 6.16 of GB/T6933.
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