SJ 20571-1996 General specification for the transmission subsystem of the shipborne shortwave integrated communication system
Some standard content:
Military Standard of Electronic Industry of the People's Republic of China FL5820
SJ20571-96
General specification of transmitting sub-systemsfor naval ships short wave integrated communication systemPublished on August 30, 1996
Implementation on January 1, 1997
Approved by the Ministry of Electronics Industry of the People's Republic of China 1 Scope
1.1 Subject content
1.2 Scope of application
2 Reference documents
3 Requirements
3.1 Qualification
3.2 Components, parts and materials -
3.3 Design
3.4 Dimensions...||t t||3.5 Weight
3.6 Structure
3.7 Process
3.8 Interchangeability
3.9 External interface
Performance characteristics·
Safety…·
Environmental requirements
3.13 Power supply and power consumption
Electromagnetic compatibility
Reliability
Maintainability
3.17 Color.
3.18 Product logo||tt| |3.19 Appearance quality
4 Quality assurance regulations
4.1 Inspection tasks
4.2 Inspection categories
4.3 Inspection conditions
4.4 Verification inspection
4.5 Quality consistency inspection
4.6 Packaging inspection
4.7 Inspection methods...
4.8 Defect classification,
S Delivery preparation
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Package 1.1 Subject matter
SJ 20571-96
This specification specifies the requirements, quality assurance provisions, delivery preparation and instructions for the transmitting subsystem of the shipborne shortwave integrated communication system (hereinafter referred to as the "transmitting subsystem\) 1.2 Scope of Application
This specification is applicable to the transmission subsystem and its component equipment of the shortwave integrated communication system of large and medium-sized military surface ships. This specification is the basis for the demonstration, design, manufacture and inspection of the transmission subsystem equipment, and is also the basic basis for the formulation of the transmission subsystem product specification.
2 Referenced Documents
GB 191-90
GB/T 6933—95
GB7269—87
GB 11014—89
GJB 10086
GJB 150.16—86
Packaging, storage and transportation pictorial symbols
Methods for measuring electrical properties of short-wave single-sideband transmittersLayout, type and basic dimensions of electronic equipment control consolesBalanced voltageElectrical characteristics of digital interface circuitsBasic dimensions of panels, channels and resistorsSmall seriesEnvironmental test methods for military equipmentVibration testEnvironmental test methods for military equipmentShock testGJB 150. 18--86
GJB 150.23—91
Environmental test methods for automotive equipmentTilt and swing testGJB 151.586
GJIB 152—86
GIB 17986
GIB 367. 187
GJB 367.2--87
G,B 367.3—87
GJB 367.4—87
GIB 367.587
Requirements for electromagnetic emission and sensitivity of military equipment and subsystems Requirements for equipment and subsystems in surface ships (Category A4)
Counting 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 General technical conditions for military communication equipment Environmental test methods General technical conditions for military communication equipment Reliability identification test and acceptance test methods General technical conditions for military communication equipment Acceptance rules General technical conditions for military communication equipment Packaging, transportation and storage requirements Ministry of Electronics Industry of the People's Republic of China Issued on August 30, 1996 Implemented on January 1, 1997
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SJ 20571-- 96
GJB368.2—87 General specification for equipment maintainability Basic requirements for maintainability GIB368.587 General specification for equipment maintainability Test and evaluation of maintainability GIB 66389
GJB 880-—90
GJB 899—90
GJB 2076—94
GIB 2077--94
GJB 2328—95
SI 20044--92
3 Requirements
3.1 Qualification appraisal
System safety requirements for military communication equipment
Interface of military shortwave single sideband communication system
Reliability appraisal and acceptance test
Functional characteristics of adaptive controller of shortwave adaptive communication system Automatic line establishment procedure of shortwave adaptive communication system General specification for integrated ship communication system
Safety requirements for shortwave single sideband communication equipment
Products submitted in accordance with this specification shall be products that have passed the appraisal or have been approved for finalization. 3.2 Components, parts and materials
The selection of components, parts and materials for the signaling subsystem equipment shall comply with the requirements of Chapter 3 of GJB 367.1. 3.3 Design
The design requirements for the signaling subsystem equipment shall comply with the provisions of Chapter 1 of GJB367.1 and Chapter 3 of GJB2328. 3.3.1 Composition of the signaling subsystem
The signaling subsystem usually consists of two subsystems: a. broadband signaling subsystem;
b. case-band signaling subsystem.
3.3.1.1 Broadband signaling subsystem
The broadband signaling subsystem consists of the following independent equipment: a. exciter cabinet;
b. input hybrid network;
c. 1kW broadband power amplifier cabinet;
d. output mixer cabinet;
low-pass filter.
The specific composition of the broadband transmission subsystem is specified by the product specifications. 3.3.1.2 Narrowband transmission subsystem
The narrowband transmission subsystem consists of the following independent equipment: a: Excitation and 1kW broadband power amplifier cabinet: b. Antenna tuner.
The specific composition of the narrowband transmission subsystem is specified by the product specifications. 3.3.2 Configuration requirements of the transmission subsystem
The configuration of the transmission subsystem is specified by the product specifications. 3.3.2.1 Broadband transmission subsystem
3.3.2.1.1 Exciter cabinet (depending on the number of transmission paths) includes:
. Mathematical exciter:
Several;
Excitation combiner:
c: Cooling equipment.
The number of configurations is specified by the product specifications
3.3.2.1.2 Input hybrid network
3.3.2.1.31kW broadband power amplifier cabinet3.3.2.1.4 Output mixer cabinet
3.3.2.1.5 Low-pass filter
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1 unit:
several,
several;
The number of low-pass filters is determined by the configured antenna. 3.3.2.2 Narrowband signaling subsystem
3.3.2.2.1 Exciter and 1kW broadband power amplifier cabinet include:
Digital exciter:
h: excitation controller;
e.1kw broadband power amplifier;
d. Auxiliary unit:
e: Power supply and cooling equipment.
The number of configurations shall be specified by the product specification.
3.3.2.2.2 Antenna tuner
Note: The adapter antenna configured by the transmitting subsystem shall be specified by the product specification. 3.3.3 Basic functions of the transmitting subsystem
If there are ten:
Several units.
The transmitting subsystem can realize all or part of the following functions as needed: 3.3.3.1 Type of work
The transmitting subsystem can work in the following transmission modes: a.
Constant amplitude report (Cw);
b. Double Sideband (DSR);
Single Sideband (SSB):
d. Independent Sideband (ISB);
Teletransmission (RATT);
Data (rate not higher than 2400bit/s)
Name: Image fax.
3.3.3.2 Working channels
The transmitting subsystem can perform multi-channel transmitting work at the same time, and the working channels are specified by the product specifications. 3.3.3.3 Transmitting peak packet power
The transmitting peak packet power of the transmitting subsystem should be available in grades, and the grade power values are specified by the product specifications. 3.3.3.4 Remote control
The remote control content and interface mode are as follows:
a: The remote control content is specified by the product specifications;
b, the remote control interface mode is asynchronous and serial, and should meet the requirements of GRB11014. 3.3.3.5 Audio input characteristics
The audio input signal level is 0dBm, and the input impedance is 600n (balanced, not grounded). 3
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3.3.3.6 Cooling method
Specified by the product specification.
3.3.4 Basic functions of independent equipment
3.3.4.1 Exciter cabinet
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The exciter operates in the frequency range of 1.6 to 30MHz, has audio input and RF output interfaces, can operate in the working mode specified in Article 3.3.3.1, and provide 100mW RF signal to the power amplifier cabinet. 3.3.4.21kW broadband power amplifier cabinet The broadband power amplifier can amplify the RF signal within the operating frequency range, with a power output of 1kW, and has high performance of intermodulation distortion and out-of-band noise.
3.3.4.3 Input hybrid network
In the broadband transmission subsystem, the input hybrid network is connected between the exciter cabinet and the 1kW broadband power amplifier cabinet, and matched with the output mixer cabinet to achieve multi-channel communication. 3.3.4.4 Output mixer cabinet
In the broadband transmission subsystem, the input hybrid cabinet is connected between the 1kW broadband power amplifier cabinet and the low-pass filter, and the radio signals sent by multiple 1kW broadband power amplifier cabinets are combined through the output hybrid network and sent to the corresponding antenna ports (for example: X port, Y port, etc.) to achieve multi-channel communication. 3.3.4.5 Low-pass filter
The low-pass filter is divided into different frequency bands according to the antenna requirements, and is connected between the output mixer cabinet and the broadband line to filter out high-order harmonics and stray noise.
3.3.4.6 Narrowband transmission subsystem 1kW broadband power amplifier cabinet In the narrowband transmission subsystem, the cabinet can convert the audio input signal into a radio frequency signal through a digital exciter within the working frequency range, and after power amplification, output a radio signal with an output power of 1kW. 3.3.4.7 Antenna tuner
The antenna tuner automatically matches the output impedance of the transmitter with the input impedance of the antenna, so that the radio frequency signal is transmitted from the antenna.
3.4 Dimensions
The external dimensions of the transmission subsystem equipment shall comply with the provisions of Article 1.14 of GJB367.1, and the structural dimensions shall comply with the dimension series of GB7269 and GJB100. The specific requirements shall be specified by the product specifications. 3.5 Weight
The weight of the transmission subsystem equipment shall be reduced as much as possible without affecting the performance and structure of the subsystem. The specific requirements shall be specified by the product specifications.
3.6 Structure
The structure of the signaling subsystem equipment shall comply with the requirements of Article 1.15 of GJB367.1, and adopt the cabinet structure. It shall have good processability, heat dissipation, inheritance, and sufficient mechanical strength, and be firm, reliable, safe, and easy to install and maintain on the ship.
The components (groups) in the signaling subsystem equipment shall adopt modular structure as much as possible. 3.71 Technology
The technology of the signaling subsystem equipment shall comply with the provisions of Chapter 2 of GJB367.1. In order to adapt to the marine environment, the equipment of the shipborne shortwave integrated communication system sending subsystem should be treated with "two protections" (moisture-proof, salt spray-proof, and mildew-proof. For static-sensitive components, anti-static control processes should be implemented in all links of transportation, storage, assembly, and commissioning. 4
3.8 Interchangeability
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The interchangeability of the sending and receiving subsystem equipment should comply with the requirements of Article 1.7 of GJB367.1. After replacing the same components, assemblies, parts, and modules of the equipment, the equipment should be able to work normally without adjustment, and should be able to meet the electrical performance requirements after a slight adjustment. After the interchange of each unit module, the performance indicators of the equipment should meet the requirements. The components or modules that need to be readjusted after the interchange should be specified in the product specifications.
3.9 External interface
The external interface requirements of the signaling subsystem equipment shall be specified in the product specification. The external interface shall comply with the requirements of GJB880 or the order contract.
For the signaling subsystem equipment with shortwave adaptive communication function, its automatic line establishment (ALE) procedure shall comply with the provisions of GJB2077, and its functional characteristics shall comply with the provisions of GJB2076. 3.10 Performance characteristics
3.10.1 Broadband signaling subsystem
3.10.1.1 Frequency range (see 4.7.3.1.1) 1.6~28MHzc
3.10.1.2 Frequency interval (see 4.7.3.1.1) 1Hz, 10Hz or 100Hz.
3.10.1.3 Peak envelope power (see 4.7.3.1.2) Each transmission channel can be attenuated from the maximum output power by 63dB in 1dB steps or as specified by the product specifications. When working in multiple channels, the total peak envelope power shall not exceed 1kW±2dB. When working in only one channel, the maximum peak envelope power shall be specified by the product specifications. 3.10.1.4 Relative audio intermodulation product level (intermodulation distortion) (see 4.7.3.1.3) shall not exceed -36dB.
3.10.1.5 Audio frequency modulation characteristics (channel frequency) (see 4.7.3.1.4) shall not exceed 2.5dB (300~3000Hz):
Not more than 2dB (400~2900Hz).
3. 10.1.6 Sideband suppression (see 4.7.3.1.5) not greater than 60dB (measured at 600Hz).
3.10.1.7 Carrier suppression (see 4.7.3.1.6) not greater than -50dB.
3.10.1.8 Same sideband attenuation (see 4.7.3.1.7) not greater than -60dB (measured at 5kHz).
3.10.1.9 Harmonic suppression (see 4.7.3.1.8) not greater than -34dB.
3.10.1.10 Spurious noise (out-of-band noise) (see 4.7.3.1.9) not greater than -158dB/Hz
3.10.1.11 Frequency error (see 4.7.3.1.10) 5 × 10 -8.
3.10.1.12 Frequency stability (see 4.7.3.1.11) 1×10-7/l (measured 1h after power on).
3.10.1.13 Phase jitter (see 4.7.3.1.12) 4/10msc
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3.10.1.14 Group delay (see 4.7.3.1.13) not more than 500μs6002880Hz).
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3.10.1.15 Activation time (see 4.7.3.1.14) not more than 7ms.
3.10.1.16 Deactivation time (see 4.7.3.1.15) not more than 10ms
3.10.2 Narrowband signaling subsystem
3.10.2.1 Frequency range (see 4.7.3.2.1) 1.6~ 30MHz.
3.10.2.2 Frequency interval (see 4.7.3.2.1) 1Hz, 10Hz or 100Hz.
3.10.2.3 Beehive power (see 4.7.3.2.,2) Each transmission channel can be attenuated from the maximum output power in 1dB steps by 63dB or as specified by the product specifications. The transmission packet power of each channel is 1kW, and the transmission power of each channel is not affected. 3.10.2.4 The relative audio intermodulation product level (intermodulation peak true) (see 4.7.3.2.3) is not greater than -35dIB,
3.10.2.5 Audio frequency modulation characteristics (channel frequency response) (see 4.7.3.2.4) is not greater than 2.5dB (300 ~3000Hz):
is not greater than 2B (400-2900Hz),
3.10.2.6 Reverse band suppression (see 4.7.3.2.5) is not greater than -60dB (measured at 600Hz).
3.10.2.7 Carrier suppression (see 4.7.3.2.6) is not greater than -50dB
3.10.2.8 Same sideband attenuation (see 4.7.3.2.7) is not greater than 60dB (5kHz measurement).
3.10.2.9 Harmonic suppression (see 4.7.3.2.8) is not greater than -34dB.
3.10.2.10 Spurious noise (out-of-band noise) (see 4.7.3.2.9) is not greater than ~158dB/Hz (relative to 1000w level). 3.10.2.11 Frequency error (see 4.7.3.2.,10) 5×10-8
3.10.2.12 Frequency stability (see 4.7.3.2.11) 1×10~7/d (measured after 1h of operation)
3.10.2.13 Phase jitter (see 4.7.3.2.12) 4/10msc
3.10.2.14 Group delay (see 4.7.3.2.13) not more than 500μs (600-2880Hz).
3.10.2.15 Activation time (see 4.7.3.2., 14) not more than 7msc
3.10.2.16 Deactivation time see 4.7.3.2.15) 6
not more than 10ms.
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3.10.2.17 Tuning time (see 4.7.3.2.16) Storage call tuning time: not more than 0.3s: Non-storage tuning time: not more than 7s. Typical value is 5s3.11 Safety
The safety design of the signaling subsystem equipment shall comply with the requirements of Article 1.8 of GJB367.1. The safety requirements shall comply with the provisions of GJB663 and SJ20044, and the specific requirements for insulation resistance and dielectric strength shall be clearly specified in the product specifications. 3.12 Environmental requirements bzxZ.net
3.12.1 Climate requirements
3.12.1.1 Working temperature:
-10～50℃ (specialized cabins of surface ships); -30～60℃ (open air use).
3. 12.1.2 Storage temperature: ~ 50 ~65℃ 3.12.1.3 Solar radiation
Should withstand the <404 solar radiation test> in GJB367.2, the severity level shall comply with the requirements of Chapter 3. 3.12.1.4 Rain
The signaling subsystem equipment used in the open air shall be subject to the requirements of the rain test. The rain requirements shall comply with the requirements of Chapter 3 of <410 rain test> in GJB367.2.
3.12.1.5 Humidity and heat
Should withstand the harsh level of shipborne communication equipment specified in Chapter 3 of GJB367.2 (411 Humidity and heat test), that is: temperature is (30~60)±5℃, relative humidity is 95%, test cycle is 5, each test cycle is 24h3,12.1.6 Mold
Should withstand the test conditions of Chapter 3 of GJB367.2 (412 Mold test). The grade is specified by the product specification.
3.12.1.7 Salt spray
Should withstand the test conditions of Chapter 3 of GIB367.2 (413 salt spray test). The salt spray treatment method is specified by the product specification.
3.12.2 Mechanical requirements
3.12.2.1 Impact
Should be able to withstand the test specified in Chapter 4 of GJB150.18 (Test + Impact test of ship equipment). 3.12.2.2 Vibration
Should withstand the requirements of Table 408-4 of Article 4.4 of GJB367.2 (408 impact test). 3.12.2.3 Vibration
Should withstand the requirements of Table 9 of Article 2.3.11 of GJB150.16 (Category 9 - Ship vibration). 3.12.2.4 Tilt and sway
Should be subject to the requirements of Table 2, Table 3 or Table 4 in GJR150.23. 3.13 Power supply and power consumption
The power supply and power consumption of the signaling subsystem equipment shall also be specified in the product specifications. 3.14 Electromagnetic compatibility
The electromagnetic emission and sensitivity requirements of the signaling subsystem equipment shall comply with the requirements of GJB151.5. HTTKAONTKAca-
3.15 Reliability
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The mean time between failures MTBF (α1) value of the signaling subsystem equipment shall be specified in the product specifications. 3.16 Maintainability
The maintainability design of the signaling subsystem equipment shall comply with Article 1.6 of GJB367.1 and the provisions of GJB368.2. 3.16.1 The maintainability index is expressed in terms of mean time to repair (MTTR). The mean repair time (MT-TR) of the signaling subsystem equipment shall not exceed 0.5h.
3.16.2 The signaling subsystem equipment shall have an internal self-checking function. The internal white detection device shall be able to automatically detect the unit module. 3.17 Color
The protective color and identification color of the signaling subsystem equipment shall comply with the provisions of Article 1.20 of GJB367.1. The color of the chassis and cabinet is medium green-gray.
3.18 Product marking
The signaling subsystem equipment shall be equipped with a clear and durable nameplate in an appropriate position. The nameplate shall be firmly fixed and marked on it: Product model and name;
b. Name or code of the contractor;
℃. Manufacturing number (or manufacturing date) or production batch number. 3.19 Appearance Quality
The product's appearance shall be free of rust, mildew, stains, coating shedding, scratches, burrs; plastic parts shall be free of blistering, cracking, and deformation; text, symbols, and signs shall be clear; structural parts and control components shall be complete and free of mechanical damage. 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 Conformity Responsibility
All products must meet all requirements of Chapters 3 and 5 of the specification. The inspections specified in this specification shall become an integral part of the contractor's entire inspection system or quality system. 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 it require the ordering party to accept defective products. 4.2 Inspection classification
The inspections specified in this specification are divided into:
Note: Identification 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 normal test atmospheric conditions: Temperature: 15~35C;
Relative density: 20%--80%:
Air pressure: test site air pressure.
4.4 Identification inspection
Identification inspection is generally carried out when the product design and production are finalized. When the main design, process, components and materials of the product have major changes that affect the important performance of the product and make the original identification results no longer valid, identification inspection should also be carried out. 8
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Identification inspection shall be carried out in a laboratory approved by the ordering party or the superior identification agency. 4.4.1 Inspection Items
The inspection items are shown in Table 1.
4.4.2 Inspection Samples
The inspection samples must be products that have passed the inspection of the quality inspection department of the contractor and have complete inspection records. The number of samples is generally two sets.
4.4.3 Qualification Criteria
When all inspection items meet the requirements of Chapter 3 and Chapter 5, the appraisal inspection is considered qualified. If any inspection item does not meet the requirements of Chapter 3 and Chapter 5 due to poor design or process, the inspection should be stopped. 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 do not meet the specified requirements, the appraisal inspection is still considered qualified; if there is still an item that does not meet the specified requirements after continued inspection, the appraisal inspection is considered unqualified. 4.4.4 Maintenance of Qualification
In addition to the appraisal inspection of design finalization and production finalization, in order to maintain the qualification of appraisal inspection, the contractor should regularly provide the product's Group C inspection data to the ordering party or the superior appraisal unit according to the requirements. 4.5 Quality consistency inspection
Quality consistency inspection is divided into Group A, Group B, Group C and Group D inspection. The formation of inspection batches should comply with the provisions of Article 3.6 of GJB179. 4.5.1 Group A Inspection
4.5.1.1 Inspection Items
Group A inspection items are shown in Table 1.
4.5.1.2 Sampling Plan
100% of the inspection batches submitted by the contractor shall be subject to Group A inspection. The batch quality of Group A inspection is expressed in terms of defects per 100 units. The acceptable number of defects per 100 units shall be agreed upon by the contractor and the ordering party or the following values shall be selected: number of serious defects: 10, 15, 25;
number of minor defects: 40, 65, 100.
The specific acceptable number of defects per 100 units shall be specified by the product specification. Defect classification is shown in Article 4.8.
4.5.1.3 Acceptance Criteria
Based on the inspection results, the number of defects per 100 units shall be calculated. If it is equal to or less than the specified acceptable 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 Group A inspection. If fatal defects are found, the batch will be rejected. 4.5.1.4 Re-inspection
For batches that fail the Group A inspection, the contractor shall analyze the batch of products, find out the causes of the defects and take corrective measures before resubmitting them 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.
4.5.1.5 Group A inspection sample processing
For batches that pass the Group A inspection, the contractor shall be responsible for repairing defective products and ensuring that they meet the requirements specified in the product specifications.-g
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