SJ 20565-1996 General specification for wireless weather facsimile receivers for submarines
Some standard content:
Military Standard of the Electronic Industry of the People's Republic of China FL5830
SJ20565-96
Radio Weather Fax Receivers for Submarine
General Specification
General Specification for Radioweateorogical Facsimile Receivers in Submarins1996-08-30 Issued
1997-01-01 Implementation
Approved by the Ministry of Electronics Industry of the People's Republic of China Military Standard of the Electronic Industry of the People's Republic of China General Specification for Radioweateorogical Facsimile Receivers in Submarins1 Scope
1.1 Subject Content
SJ 2056596
This specification specifies the classification, requirements, quality assurance provisions and delivery preparation of radioweateorogical facsimile receivers for submarines (hereinafter referred to as fax machines).
1.2 Scope of Application
This specification applies to the design, production and acceptance of meteorological fax receivers. 1.3 Classification
1.3.1 Fax machines can be divided into wall-mounted type;
b. Desktop type.
1.3.2 Fax machines can be divided into thermal paper recording type and ordinary paper recording type according to their recording method.
2 Referenced DocumentsWww.bzxZ.net
GB 191-90
Packaging, Storage and Transportation Pictorial Marking
GB9028.2—88 Weather Map Fax Machine (Simulation) Test MethodsGJB151.6—86 Requirements for Magnetic Emission and Sensitivity of Military Equipment and Subsystems Requirements for Equipment and Subsystems in Submarines (Class A5)
Measurement of Electromagnetic Emission and Sensitivity of Military Equipment and SubsystemsGJB 152—86
GJB 367.—87 General Technical Conditions for Military Communication Equipment Design and Manufacturing RequirementsGJB367.2—87 General Technical Conditions for Military Communication Equipment Environmental Test MethodsGJB 367.5—87 Technical Conditions for Military Communication Equipment Packaging, Transportation and Storage RequirementsGJB 368.5—87 General Specifications for Equipment Maintainability Maintainability Test and EvaluationSJ 2901--88
3 Requirements
Reliability test method for fax machine
The 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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3.1 Detailed Specifications
SJ 20565-96
The individual requirements of fax machines shall comply with the requirements of detailed specifications. 3.2 Qualification Appraisal
The fax machines submitted in accordance with this specification shall be products that have been qualified or approved for finalization. 3.3 Design and Manufacturing
In order to meet the tactical and technical requirements of fax machines, the requirements for design, process, components, parts and materials as well as the accompanying technical documents shall comply with the requirements specified in GJB367.1 and the relevant provisions of this specification. 3.4 Structure
The structural form of the fax machine shall be determined according to the special space environment of the submarine, and its fixing shall be able to withstand the specified vibration, impact and shock.
The fax machine consists of a short message receiving part and a fax receiving part, and is structurally integrated. 3.5 Appearance
The appearance of the fax machine should be regular and not deformed. The outer coating layer should be free of damage and obvious scratches, and the surface of exposed components, knobs and other plastic products should be smooth and free of cracks, bubbles, shrinkage holes and deformation. The characters on the board should be clear, firm and without defects. 3.6 Dimensions
The overall dimensions of the fax machine should be able to pass through a hatch with a true diameter of 580mm. 3.7 Weight
The quality of the fax machine should take into account the actual use restrictions of transportation and installation, and should meet the tactical and technical requirements and the provisions of the detailed product specifications.
3.8 Performance characteristics
3.8.1 Shortwave receiving part
3.8.1.1 Shortwave receiving frequency range
The frequency range of the receiver is 2·-24MHz
3.8.1.2 Frequency setting
The receiver should be able to preset and store the radio station frequencies announced by the World Meteorological Organization (WMO). If necessary, it can also set additional station frequencies according to domestic conditions, with a total of no more than 512. By switching the three frequency band switches of "ZONE", "STATION" and "FREQ", the set radio station frequencies can be retrieved respectively. 3.8.1.3 First local oscillator frequency
The first local oscillator frequency of the shortwave receiving part is the sum of the receiving frequency and the first intermediate frequency (47.8MHz), and its allowable error is ±200Hzn
3.8.1.4 Received signal type
The received signal type is divided into two types: RF carrier frequency shift (F3C) and independent sideband (ISB). 3.8.1.5 Fine-tuning range
The fine-tuning range of the shortwave receiving frequency is:
When the received signal type is F3C, ±300Hz; when the received signal type is JSB, 2kHz. 3.8. 1.6 Sensitivity
When the signal-to-noise ratio (SINAD) is 20dB, the sensitivity should be better than 2μV. 3.8.1.7 Output level
When the nominal impedance is 6000, the output level of the receiving part is 0dBm±10dBmc2
3.8.1.8 Output subcarrier FM signal
Center frequency 1900Hz;
Black signal frequency 1500Hz
White signal frequency 2300Hz.
SJ20565-96
The drift of the black signal frequency within 30s should not exceed 8Hz, and the drift within 15min should not exceed 10Hz.
3.8.1.9 Selectivity
The bandwidth of the 6dB attenuation point should be greater than 2kHz and less than 6.2kHz. The bandwidth of the 66dB attenuation point should be less than 10kHz. 3.8.1.10 Intermediate frequency suppression ratio
The intermediate frequency suppression ratio of the receiving part should not be less than 60dB. 3.8.1.11 Image frequency suppression ratio
The image frequency suppression ratio of the receiving part should not be less than 50dB. 3.8.1.12 Input impedance
The nominal value of the input impedance of the receiving part is 500. 3.8.2 Fax receiving part
3.8.2.1 Scanning direction
Facing the document vertically, the scanning direction should start from the upper left corner of the drawing, scan from left to right, and scan downward line by line. Each scan line must be immediately below the previous scan line until the lower right corner of the drawing. 3.8.2.2 Scan line length
The scan line length (record length) is 256 ± 0.5 mm3.8.2.3 Cooperation index (IOC)
The cooperation index of the fax receiving part is 576 or 288, which can be selected manually or automatically. The cooperation index should be defined by formula (1):
Where: M—cooperation index;
L.—total length of the scan line, mm;
F-scan line density, lines/m.
3.8.2.4 Scanning line density
When the cooperation index is 576, 7.06 lines/mm; when the cooperation index is 288, 3.53 lines/mmc
3.8.2.5 Recording density in the main scanning direction
The recording density in the main scanning direction is 8 dots/mm3.8.2.6 Scanning line frequency
The scanning line frequency can be all or some of the following: 60 lines/min;
90 lines/min;
120 lines/min;
240 lines/min.
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SJ20565-96
The scanning line frequency can be selected manually or automatically. 3.8.2.7 Input signal level
The input signal level of the fax receiving part is -35-+10dBm. 3.8.2.B Signal Anti-interference Capability
When the signal-to-noise ratio is greater than 13B, the fax part should be able to receive normally. 3.8.2.9 Intermediate Tone
When the tones are transmitted, including the black and white levels, the tones should be linearly distributed based on 8 levels. The frequency distribution is as follows:
1 500, 1 614, 1 729, 1 843, 1 957, 2 017, 2 186, 2 300Hzo3.8.2.10 Input Impedance
The input impedance of fax reception is 600±1200. 3.8.2.11 Synchronous Frequency
The synchronization mode is independent synchronization.
The stability of the synchronous frequency should be better than ±5×10-. 3.8.2.12 Bottom-up device
The fax machine should be able to start after receiving the cooperation index selection signal or the phase signal, and can also be started manually if necessary. 3.8.2.13 Phase and scanning line frequency selection The phase of the fax machine can be manual or automatic. Automatic phase selection is completed by the following signals. a. The phase and scanning line frequency selection is completed by alternating black and white multiples for 30s, and the frequency is: 1.0Hz when the scanning line frequency is 60 lines/minute; 1.5Hz when the scanning line frequency is 90 lines/minute:
2.0Hz when the scanning line frequency is 120 lines/minute
4.0Hz when the scanning line frequency is 240 lines/minute. b. The waveform of the phase signal can be a symmetrical black and white signal, both of which last for a time equivalent to half a scan line, or an asymmetrical signal, in which case the white signal lasts for 5% of the scan line length and the black signal lasts for 95% of the full scan line length; c. The phase signal is excited by the leading edge of the white signal, which must correspond to the leading edge of the scan line entering the next loss length; d. The envelope of the signal should be approximately short-shaped. 3.8.2.14 Selection of cooperation index
The fax machine selects the cooperation index by receiving a black and white alternating signal that lasts for 5 to 10 seconds. When the alternating frequency is 300Hz, it indicates that the cooperation index is 576. When the alternating frequency is 675Hz, it indicates that the cooperation index is 288. The envelope of the remote control signal is approximately rectangular, and its frequency tolerance is 1%: 3.8.2.15 Stop scanning
In addition to being able to manually stop scanning, the fax machine should also be able to automatically stop scanning and recording. The accompanying signal should be a 450Hz alternating signal that lasts for 5 seconds, followed by a continuous signal that lasts for 10 seconds. The envelope of the signal should be approximately rectangular, and the frequency tolerance should be 1%. 3.8.3 Continuous working capability
Under normal atmospheric conditions, the fax machine should be able to work continuously for 12 hours. 3.8.4 Power supply and energy consumption
The power supply of the fax machine is single-phase AC (50=5%) Hz, (220±10%) V: the energy consumption should not be more than 150VAn4
3.9 Safety
3.9.1 Dielectric strength
SJ 20565—96
The power supply line and the casing should be able to withstand an AC voltage test of 1500V, 50Hz, 5mA for 1 minute. No breakdown or arcing should occur during the test.
3.9.2 Insulation resistance
The insulation resistance between the power supply line and the ground line should be no less than 100MQ, and should be no less than 2MQ after the damp heat test. 3.10 Environmental adaptability
The fax machine should be able to work normally under the following conditions. 3.10.1 Ambient temperature
The fax machine should be able to work normally under the conditions of an ambient temperature of 0 to 50t. Under the condition of an ambient temperature of -50t, the fax machine should be able to work normally after being stored for 24 hours. 3.10.2 Damp heat
The fax machine should be able to work normally after being subjected to the damp heat test specified in Figure 1 with 24 hours as one cycle and 5 cycles. (a
81624324048566472808896104112120128136144Figure 1
3.10.3 Atmospheric pressure
The fax machine should be able to work normally under an atmospheric pressure of 86~106kPa. 3.10.4 Vibration
The fax machine should be able to withstand the vibration specified in Table 1 and should be able to work normally after the test. RH
12 - 24
Time (h)
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Test items
Resonance check
Stability test
With resonance
Vibration resistance test
Without resonance
3.10.5 Impact
Number of impacts
Direction of striking
Peak acceleration
3.10.6 Rain drops
10--17
17 ~ 30
30 -40
17--30
30--40
Height of falling weight, m
Soushus
SJ 20565-96
0.25±0.05
0.15 ±0.05
1.4±0.14
0.G±0.06
0.3 ±0,03
0.15 ± 0.02
1.00±0.10
0.60 + 0.06
0.15 ±0.02
Hand impulse
Acceleration
Pulse repetition rate
Times/min
The fax machine should be able to withstand GIB367.2 (Method 2 of 410 rain test>\Rain test\3.10.7 Fungus
Test time
Each cheek
3--4 times
Each cheek
Number of impacts
The fax machine should be able to withstand GJR367.2's "412 Fungus Test" with a period of 28d). After the test, slight fungus growth is allowed on the sample, and it should be able to work normally. 3.10.8 Salt spray
The metal or non-metal protective layer of the fax machine should have sufficient resistance to salt corrosion. GJB367.2 After the specified a6
SI2056596
type (413 salt spray test", the fax machine should be able to work normally and its appearance should meet the following requirements: - There should be no white rust on the surface of steel galvanized passivated parts; there should be no brown rust on the surface of steel multi-layer chrome-plated parts; - There should be no gray and light green corrosion on the surface of copper and copper alloy nickel-plated parts. 3.11 Transportability
The fax machine should be able to withstand a road transport test of 250km at a speed of 25-40km/h on a third-level highway. After the test, the fasteners and welding of the fax machine should not be loose or mechanically damaged. It should be able to work normally. 3.12 Electromagnetic compatibility
The electromagnetic emission and sensitivity requirements of the fax machine should comply with the provisions of GJB151.6, and the specific items shall be specified by the detailed product specifications.
3.13 Reliability
The mean time between failures (MTBF)e of the fax machine should not be less than 1000h. 3.14 Repairability
The mean time to repair (MTTR) of the fax machine should be less than 0.5h. 4 Quality Assurance Provisions
4.1 Inspection Responsibilities
Unless otherwise specified in the contract or order, the contractor shall be responsible for completing all inspections specified in the 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 Qualifications
The contractor shall ensure that the submitted fax machine meets the requirements of the specification. If the contract contains inspection requirements not specified in the specification, it shall also ensure that it meets the requirements of the contract. Only fax machines that have passed the inspection can be submitted to the ordering party. 4.2 Inspection Classification
The inspections specified in this specification are divided into:
a. Appraisal inspection;
. Quality conformity inspection.
4.3 Inspection conditions
Unless otherwise specified, the inspection conditions shall comply with the following provisions: 4.3.1 Standard atmospheric conditions
All inspections in this specification, except for special requirements, shall be carried out under the following standard atmospheric conditions: a. Temperature: 15-35℃
1 Relative humidity: 20%~80%;
c, Air pressure: atmospheric pressure at the inspection site;
4.3.2 Power supply
The power supply voltage is AC 220±2V, and the power is greater than 1kVA. 4.3.3 Test equipment
The test instruments, meters, gauges and equipment used for inspection shall be qualified and within the specified period, and their measurement accuracy shall meet the requirements of the detailed specifications.
4.4 Qualification inspection
Fax machines must be subjected to quali?cation inspection in the following cases to determine that the manufacturer has the ability to produce products that meet the requirements of the specification. HYTKAONTKAca-
a. When new products are identified;
b. When major design and process changes are made:
When production is resumed after two years of suspension.
4.4.1 Inspection items and inspection sequence
SJ20565-96
The inspection items for fax machine identification should include all requirements specified in the specification, and the inspection sequence shall be as specified in Table 4. Table 4
Appearance, structure
Dimensions, weight
Frequency setting, first local oscillation
Music rate, fine-tuning range
Sensitivity,Output level
Output subcarrier FM signal
Selectivity
Neutral suppression ratio
Image frequency suppression ratio
Input impedance
Scanning direction
Scanning line length
Scanning index
Scanning line density
Recording density in scanning direction
Scanning line frequency
Internal signal level
Signal anti-interference ability
Mid-tone
Synchronous frequency
Phase and scanning line frequency selection Selection
Selection of cooperation index (automatic)
Stop scanning (automatic)
Continuous working capability
Identification inspection
Quality consistency inspection
Requirement chapter
3.5, 3.4
Inspection method
Chapter number
Power supply and energy consumption
Safety performance
Environmental humidity
Electromagnetic compatibility
Reliability
Maintenance barrier
Identification inspection
SI 20565-96
Quality-Conformity Inspection
Note "○\ indicates a mandatory item, \…\ indicates an item not to be done4.4.2 Sampling
Requirements Chapter
Inspection Method
Chapter No.
The sample for the fax machine identification inspection can be a complete fax machine. With the consent of the ordering party, representative electrical or mechanical components that are sensitive to environmental conditions can also be selected, but the number shall not be less than 2 pieces.4.4.3 Inspection Report
The inspection report of the identification inspection shall list the relevant test items, indicators and the chapter and article numbers of the relevant technical requirements and inspection methods, and fill in the test data and conclusions.
4.4.4 Qualification Criteria
If all items of the identification inspection meet the requirements of the specification, the identification inspection shall be judged as qualified. If unqualified items are found during the inspection, additional samples shall be taken for that item. If the re-examination is qualified, the identification and inspection will be judged as qualified. If the re-examination is unqualified, the identification and inspection will be judged as unqualified.
4.4.5 Maintaining the qualification of identification and inspection
To maintain the qualification of identification and inspection, the fax machine should be inspected at least once a year in the factory and the inspection report should be submitted. Identification and inspection can be carried out when the state agency conducts technical supervision or the ordering party requires it. 4.5 Quality---Consistency Inspection
4.5.1 Inspection Grouping
The quality consistency inspection is divided into three groups: A red, C and D groups. The inspection items of each group are specified in Table 4. 4.5.2 Group A Inspection
4.5.2.1 Sampling Plan
Group A inspection is a unit-by-unit inspection. If necessary, sampling inspection can also be carried out according to the sampling plan specified in the detailed specifications. TYKAOKAca-
4.5.2.2 Qualification Criteria
SI 20565-96
When each test item meets the specification requirements, the fax machine is judged to be qualified. If any unqualified item is found in the full test, the fax machine is judged to be unqualified. In the case of sampling test, the judgment is made according to the current determination of the sampling plan.
Fateful defects are not allowed in the A group test. If fatal defects are found, the batch of products should be rejected. 4.5.2.3 Re-inspection
For fax machines that fail the A group inspection, the contractor shall re-analyze the fax machine, find out the cause of the failure, and take corrective measures before resubmitting it for inspection. The fax machines that have been re-inspected shall be separated from other fax machines and marked with "re-inspection". If the re-inspection is qualified, it is judged to be qualified for the A group inspection; if the re-inspection is still unqualified, it is judged to be unqualified for the A group inspection. During the sample inspection, the contractor shall analyze the unqualified fax machines in the A group, find out the cause, take effective measures, and solve the problem effectively before resubmitting it for inspection
4.5.2.4 Sample handling
Samples that pass the A group inspection can be used as qualified products Delivery. 4.5.3 Group C Qualification Inspection
4.5.3.1
Samples for Group C inspection shall be taken from the qualified batches of Group A inspection. One sample shall be taken from each batch for Group C inspection. With the permission of the ordering party, representative parts that are sensitive to environmental conditions can also be taken as samples, but the number shall be doubled. 4.5.3.2 Qualification Criteria
When conducting Group C inspection, if all items meet the requirements of product specifications, it is judged that the Group C inspection is qualified; if any one of the items is qualified, it is judged that Group C is unqualified.
4.5.3.3 New Inspection
If the sample fails the Group C inspection, it can be inspected again after the cause is found and corrective measures are taken. Resubmit for inspection. The number of re-inspections should be doubled, and if the re-inspection is qualified, it will be judged as qualified for the C group inspection; if the new inspection is unsatisfactory, it will be judged as unqualified. 4.5.3.4 Sample processing
Except as otherwise specified, samples that have undergone (group) inspection shall not be submitted as qualified products. 4.5.3.5 Inspection cycle
The cycle of (group) inspection should be carried out once a year. When there are major changes in the structure, materials, components, and processes of the fax machine, which may affect the performance, (group) inspection should also be carried out: 4.5.4 D group inspection
4.5.4.1 Sampling
The selection of D group inspection products should be based on the qualified batch of A group inspection and ten random samples. The quantity shall be as specified in the detailed product specifications. 4.5.4.2 Qualification criteria
If the sample fails the D group test, the inspection and delivery of the product shall be stopped, and the manufacturer shall notify the superior appraisal agency of the non-conformity: after taking corrective measures, according to the advice 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 is still unqualified, the non-conformity shall be notified to the superior appraisal agency. 4.5.4.3 Sample handling
Unless otherwise specified, the manufacturer of the sample that has passed the D group test shall be responsible for repair and replacement of all or part of the components that have consumed the designed service life. After passing the A group test, it shall be printed as a qualified product for delivery. 10—
4.5.44 Inspection cycle
SI 20565—96
In addition to the electromagnetic compatibility test during the identification test, it shall be carried out when there are major changes in the design and process. The reliability test shall only be carried out once a year when the annual output is more than 100 units. 4.5.5 Unqualified
If the sample fails to pass the C group or ID group inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the qualified identification unit of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the qualified identification unit, or only the unqualified items shall be tested or inspected. If the test still fails, the unqualified situation shall be notified to the qualified identification unit:
4.6 Inspection method
4.6.1 Appearance, structure
Application! Test method: Check the appearance and check the integrity of the fax machine according to the random documents, which shall comply with 3.4 and 3.5 or the requirements of the detailed specifications respectively.
4.6.2 Dimensions and weights
Measure the external dimensions of the fax machine with a tape measure, which shall comply with the requirements of 3.6 and the detailed specifications. Measure the mass of the fax machine with a scale, which shall comply with the requirements of 3.7 and the detailed specifications. 4.6.3 Shortwave receiving frequency specification and local oscillator frequency and frequency fine-tuning specification 4.6.3.1 Test circuit
Test circuit 2 Note: Connect the test machine (shortwave receiving information)
4.6.3.2 Test type
Effective frequency meter
a. Connect the effective frequency meter to the test point of the shortwave receiving device and the local oscillator circuit board: b. Connect the frequency meter L according to the requirements of Table 5 Take 10 frequency points, operate 3 frequency switches at the specified position, take out the local oscillator signal point by point, let the digital frequency and read the calculation -~Local oscillator frequency calculate its error in detail, all of which should meet the requirements of 3.8.1.2 and 3.8.1.3;
Frequency master switch position
"Platform"
Makeup constant rate
"Rate"
First oscillator frequency
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Requirements
Testing methods
Article number
The sample for the fax machine identification test can be a complete fax machine. With the consent of the ordering party, representative electrical or mechanical components that are sensitive to environmental conditions can also be selected, but the number shall not be less than 2 pieces. 4.4.3 Inspection report
The inspection report of the identification test shall list the relevant test items, indicators and the article number of the relevant technical requirements and inspection methods, and fill in the test data and conclusions.
4.4.4 Qualification criteria
If all items of the identification test meet the requirements of the specification, the identification test shall be judged as qualified. If unqualified items are found during the inspection, the item shall be retested with a sample. If the retest is qualified, the identification test shall be judged as qualified. If the retest is unqualified, the identification test shall be judged as unqualified.
4.4.5 Maintaining the qualification of identification
To maintain the qualification of identification inspection, the fax machine shall be inspected at least once a year and the inspection report shall be submitted. Identification inspection may be carried out when the state agency conducts technical supervision or the ordering party requires it. 4.5 Quality---Consistency Inspection
4.5.1 Inspection Grouping
The quality consistency inspection is divided into three groups: A red, C and D. The inspection items of each group are specified in Table 4. 4.5.2 Group A Inspection
4.5.2.1 Sampling Plan
The inspection of Group A is carried out on a unit-by-unit basis. If necessary, sampling inspection may also be carried out according to the sampling plan specified in the detailed specification. TYKAOKAca-
4.5.2.2 Qualification Criteria
SI 20565-96
When each inspection item meets the requirements of the specification, the fax machine is judged to be qualified. If any non-conformity is found during the full inspection, the machine will be judged as non-conformity. During the sampling inspection, the judgment shall be made according to the provisions of the sampling plan.
No fatal defects are allowed in the Group A inspection. If fatal defects are found, the batch of products shall be rejected. 4.5.2.3 Re-inspection
For the fax machine that fails the Group A inspection, the manufacturer shall re-analyze the fax machine, find out the cause of the failure, and take corrective measures before resubmitting it for inspection. The fax machine to be re-inspected shall be separated from other fax machines and marked with "re-inspection". If the re-inspection is qualified, it shall be judged as qualified for the Group A inspection; if the re-inspection is still unqualified, it shall be judged as unqualified for the Group A inspection. During the sampling inspection, the manufacturer shall analyze the unqualified fax machines in Group A, find out the cause, take effective measures, and solve the problem effectively before resubmitting it for inspection
4.5.2.4 Sample processing
The samples that pass the Group A inspection can be regarded as qualified products Delivery. 4.5.3 Group C Qualification Inspection
4.5.3.1
Samples for Group C inspection shall be taken from the qualified batches of Group A inspection. One sample shall be taken from each batch for Group C inspection. With the permission of the ordering party, representative parts that are sensitive to environmental conditions can also be taken as samples, but the number shall be doubled. 4.5.3.2 Qualification Criteria
When conducting Group C inspection, if all items meet the requirements of product specifications, it is judged that the Group C inspection is qualified; if any one of the items is qualified, it is judged that Group C is unqualified.
4.5.3.3 New Inspection
If the sample fails the Group C inspection, it can be inspected again after the cause is found and corrective measures are taken. Resubmit for inspection. The number of re-inspections should be doubled, and if the re-inspection is qualified, it will be judged as qualified for the C group inspection; if the new inspection is unsatisfactory, it will be judged as unqualified. 4.5.3.4 Sample processing
Except as otherwise specified, samples that have undergone (group) inspection shall not be submitted as qualified products. 4.5.3.5 Inspection cycle
The cycle of (group) inspection should be carried out once a year. When there are major changes in the structure, materials, components, and processes of the fax machine, which may affect the performance, (group) inspection should also be carried out: 4.5.4 D group inspection
4.5.4.1 Sampling
The selection of D group inspection products should be based on the qualified batch of A group inspection and ten random samples. The quantity shall be as specified in the detailed product specifications. 4.5.4.2 Qualification criteria
If the sample fails the D group test, the inspection and delivery of the product shall be stopped, and the manufacturer shall notify the superior appraisal agency of the non-conformity: after taking corrective measures, according to the advice 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 is still unqualified, the non-conformity shall be notified to the superior appraisal agency. 4.5.4.3 Sample handling
Unless otherwise specified, the manufacturer of the sample that has passed the D group test shall be responsible for repair and replacement of all or part of the components that have consumed the designed service life. After passing the A group test, it shall be printed as a qualified product for delivery. 10—
4.5.44 Inspection cycle
SI 20565—96
In addition to the electromagnetic compatibility test during the identification test, it shall be carried out when there are major changes in the design and process. The reliability test shall only be carried out once a year when the annual output is more than 100 units. 4.5.5 Unqualified
If the sample fails to pass the C group or ID group inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the qualified identification unit of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the qualified identification unit, or only the unqualified items shall be tested or inspected. If the test still fails, the unqualified situation shall be notified to the qualified identification unit:
4.6 Inspection method
4.6.1 Appearance, structure
Application! Test method: Check the appearance and check the integrity of the fax machine according to the random documents, which shall comply with 3.4 and 3.5 or the requirements of the detailed specifications respectively.
4.6.2 Dimensions and weights
Measure the external dimensions of the fax machine with a tape measure, which shall comply with the requirements of 3.6 and the detailed specifications. Measure the mass of the fax machine with a scale, which shall comply with the requirements of 3.7 and the detailed specifications. 4.6.3 Shortwave receiving frequency specification and local oscillator frequency and frequency fine-tuning specification 4.6.3.1 Test circuit
Test circuit 2 Note: Connect the test machine (shortwave receiving information)
4.6.3.2 Test type
Effective frequency meter
a. Connect the effective frequency meter to the test point of the shortwave receiving device and the local oscillator circuit board: b. Connect the frequency meter L according to the requirements of Table 5 Take 10 frequency points, operate 3 frequency switches at the specified position, take out the local oscillator signal point by point, let the digital frequency and read the calculation -~Local oscillator frequency calculate its error in detail, all of which should meet the requirements of 3.8.1.2 and 3.8.1.3;
Frequency master switch position
"Platform"
Makeup constant rate
"Rate"
First oscillator frequency
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Requirements
Testing methods
Article number
The sample for the fax machine identification test can be a complete fax machine. With the consent of the ordering party, representative electrical or mechanical components that are sensitive to environmental conditions can also be selected, but the number shall not be less than 2 pieces. 4.4.3 Inspection report
The inspection report of the identification test shall list the relevant test items, indicators and the article number of the relevant technical requirements and inspection methods, and fill in the test data and conclusions.
4.4.4 Qualification criteria
If all items of the identification test meet the requirements of the specification, the identification test shall be judged as qualified. If unqualified items are found during the inspection, the item shall be retested with a sample. If the retest is qualified, the identification test shall be judged as qualified. If the retest is unqualified, the identification test shall be judged as unqualified.
4.4.5 Maintaining the qualification of identification
To maintain the qualification of identification inspection, the fax machine shall be inspected at least once a year and the inspection report shall be submitted. Identification inspection may be carried out when the state agency conducts technical supervision or the ordering party requires it. 4.5 Quality---Consistency Inspection
4.5.1 Inspection Grouping
The quality consistency inspection is divided into three groups: A red, C and D. The inspection items of each group are specified in Table 4. 4.5.2 Group A Inspection
4.5.2.1 Sampling Plan
The inspection of Group A is carried out on a unit-by-unit basis. If necessary, sampling inspection may also be carried out according to the sampling plan specified in the detailed specification. TYKAOKAca-
4.5.2.2 Qualification Criteria
SI 20565-96
When each inspection item meets the requirements of the specification, the fax machine is judged to be qualified. If any non-conformity is found during the full inspection, the machine will be judged as non-conformity. During the sampling inspection, the judgment shall be made according to the provisions of the sampling plan.
No fatal defects are allowed in the Group A inspection. If fatal defects are found, the batch of products shall be rejected. 4.5.2.3 Re-inspection
For the fax machine that fails the Group A inspection, the manufacturer shall re-analyze the fax machine, find out the cause of the failure, and take corrective measures before resubmitting it for inspection. The fax machine to be re-inspected shall be separated from other fax machines and marked with "re-inspection". If the re-inspection is qualified, it shall be judged as qualified for the Group A inspection; if the re-inspection is still unqualified, it shall be judged as unqualified for the Group A inspection. During the sampling inspection, the manufacturer shall analyze the unqualified fax machines in Group A, find out the cause, take effective measures, and solve the problem effectively before resubmitting it for inspection
4.5.2.4 Sample processing
The samples that pass the Group A inspection can be regarded as qualified products Delivery. 4.5.3 Group C Qualification Inspection
4.5.3.1
Samples for Group C inspection shall be taken from the qualified batches of Group A inspection. One sample shall be taken from each batch for Group C inspection. With the permission of the ordering party, representative parts that are sensitive to environmental conditions can also be taken as samples, but the number shall be doubled. 4.5.3.2 Qualification Criteria
When conducting Group C inspection, if all items meet the requirements of product specifications, it is judged that the Group C inspection is qualified; if any one of the items is qualified, it is judged that Group C is unqualified.
4.5.3.3 New Inspection
If the sample fails the Group C inspection, it can be inspected again after the cause is found and corrective measures are taken. Resubmit for inspection. The number of re-inspections should be doubled, and if the re-inspection is qualified, it will be judged as qualified for the C group inspection; if the new inspection is unsatisfactory, it will be judged as unqualified. 4.5.3.4 Sample processing
Except as otherwise specified, samples that have undergone (group) inspection shall not be submitted as qualified products. 4.5.3.5 Inspection cycle
The cycle of (group) inspection should be carried out once a year. When there are major changes in the structure, materials, components, and processes of the fax machine, which may affect the performance, (group) inspection should also be carried out: 4.5.4 D group inspection
4.5.4.1 Sampling
The selection of D group inspection products should be based on the qualified batch of A group inspection and ten random samples. The quantity shall be as specified in the detailed product specifications. 4.5.4.2 Qualification criteria
If the sample fails the D group test, the inspection and delivery of the product shall be stopped, and the manufacturer shall notify the superior appraisal agency of the non-conformity: after taking corrective measures, according to the advice 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 is still unqualified, the non-conformity shall be notified to the superior appraisal agency. 4.5.4.3 Sample handling
Unless otherwise specified, the manufacturer of the sample that has passed the D group test shall be responsible for repair and replacement of all or part of the components that have consumed the designed service life. After passing the A group test, it shall be printed as a qualified product for delivery. 10—
4.5.44 Inspection cycle
SI 20565—96
In addition to the electromagnetic compatibility test during the identification test, it shall be carried out when there are major changes in the design and process. The reliability test shall only be carried out once a year when the annual output is more than 100 units. 4.5.5 Unqualified
If the sample fails to pass the C group or ID group inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the qualified identification unit of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the qualified identification unit, or only the unqualified items shall be tested or inspected. If the test still fails, the unqualified situation shall be notified to the qualified identification unit:
4.6 Inspection method
4.6.1 Appearance, structure
Application! Test method: Check the appearance and check the integrity of the fax machine according to the random documents, which shall comply with 3.4 and 3.5 or the requirements of the detailed specifications respectively.
4.6.2 Dimensions and weights
Measure the external dimensions of the fax machine with a tape measure, which shall comply with the requirements of 3.6 and the detailed specifications. Measure the mass of the fax machine with a scale, which shall comply with the requirements of 3.7 and the detailed specifications. 4.6.3 Shortwave receiving frequency specification and local oscillator frequency and frequency fine-tuning specification 4.6.3.1 Test circuit
Test circuit 2 Note: Connect the test machine (shortwave receiving information)
4.6.3.2 Test type
Effective frequency meter
a. Connect the effective frequency meter to the test point of the shortwave receiving device and the local oscillator circuit board: b. Connect the frequency meter L according to the requirements of Table 5 Take 10 frequency points, operate 3 frequency switches at the specified position, take out the local oscillator signal point by point, let the digital frequency and read the calculation -~Local oscillator frequency calculate its error in detail, all of which should meet the requirements of 3.8.1.2 and 3.8.1.3;
Frequency master switch position
"Platform"
Makeup constant rate
"Rate"
First oscillator frequency
ITKAONKAca-3 Re-inspection
For fax machines that fail the A group inspection, the contractor shall re-analyze the fax machine, find out the cause of the failure, and take corrective measures before resubmitting it for inspection. The fax machines that have been re-inspected shall be separated from other fax machines and marked with "re-inspection". If the re-inspection is qualified, it is judged to be qualified for the A group inspection; if the re-inspection is still unqualified, it is judged to be unqualified for the A group inspection. During the sample inspection, the contractor shall analyze the unqualified fax machines in the A group, find out the cause, take effective measures, and solve the problem effectively before resubmitting it for inspection
4.5.2.4 Sample handling
Samples that pass the A group inspection can be delivered as qualified products. 4. 5.3 Group C Qualification Inspection
4.5.3.1
Samples for Group C inspection shall be taken from the qualified batches of Group A inspection. One sample shall be taken from each batch for Group C inspection. With the permission of the ordering party, representative parts that are sensitive to environmental conditions may also be taken as samples, but the number shall be doubled. 4.5.3.2 Qualification Criteria
When conducting Group C inspection, if all items meet the requirements of product specifications, the Group C inspection is judged to be qualified; if any one of the items is qualified, it is judged to be unqualified for Group C.
4.5.3.3 New Inspection
If the sample fails the Group C inspection, it may be resubmitted only after the cause is identified and corrective measures are taken. Inspection. The number of re-inspections should be doubled,
and if the re-inspection is qualified, it is judged as qualified for the C group inspection; if the new inspection is unsatisfactory, it is judged as unqualified. 4.5.3.4 Sample processing
Except as otherwise specified, samples that have undergone (group) inspection shall not be submitted as qualified products. 4.5.3.5 Inspection cycle
The cycle of (group) inspection should be carried out once a year. When there are major changes in the structure, materials, components, and processes of the fax machine, which may affect the performance, (group) inspection should also be carried out: 4.5.4 D group inspection
4.5.4.1 Sampling
The selection of D group inspection products should be based on the qualified batch of A group inspection and ten random samples, and the number of samples should be The quantity shall be in accordance with the detailed product specifications. 4.5.4.2 Qualification criteria
If the sample fails the Group D test, the inspection and delivery of the product shall be stopped, and the manufacturer shall notify the superior appraisal agency of the non-conformity: after taking corrective measures, according to the advice 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 is still unqualified, the non-conformity shall be notified to the superior appraisal agency. 4.5.4.3 Sample handling
Unless otherwise specified, the manufacturer of the sample that has passed the Group D test shall be responsible for quality repair and replacement of all or part of the components that have consumed their designed life. After passing the Group A test, it shall be delivered as a qualified product. 10—
4.5.44 Inspection cycle
SI 20565—96
In addition to the electromagnetic compatibility test during the identification test, it shall be carried out when there are major changes in the design and process. The reliability test shall only be carried out once a year when the annual output is more than 100 units. 4.5.5 Unqualified
If the sample fails to pass the C group or ID group inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the qualified identification unit of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the qualified identification unit, or only the unqualified items shall be tested or inspected. If the test still fails, the unqualified situation shall be notified to the qualified identification unit:
4.6 Inspection method
4.6.1 Appearance, structure
Application! Test method: Check the appearance and check the integrity of the fax machine according to the random documents, which shall comply with 3.4 and 3.5 or the requirements of the detailed specifications respectively.
4.6.2 Dimensions and weights
Measure the external dimensions of the fax machine with a tape measure, which shall comply with the requirements of 3.6 and the detailed specifications. Measure the mass of the fax machine with a scale, which shall comply with the requirements of 3.7 and the detailed specifications. 4.6.3 Shortwave receiving frequency specification and local oscillator frequency and frequency fine-tuning specification 4.6.3.1 Test circuit
Test circuit 2 Note: Connect the test machine (shortwave receiving information)
4.6.3.2 Test type
Effective frequency meter
a. Connect the effective frequency meter to the test point of the shortwave receiving device and the local oscillator circuit board: b. Connect the frequency meter L according to the requirements of Table 5 Take 10 frequency points, operate 3 frequency switches at the specified position, take out the local oscillator signal point by point, let the digital frequency and read the calculation -~Local oscillator frequency calculate its error in detail, all of which should meet the requirements of 3.8.1.2 and 3.8.1.3;
Frequency master switch position
"Platform"
Makeup constant rate
"Rate"
First oscillator frequency
ITKAONKAca-3 Re-inspection
For fax machines that fail the A group inspection, the contractor shall re-analyze the fax machine, find out the cause of the failure, and take corrective measures before resubmitting it for inspection. The fax machines that have been re-inspected shall be separated from other fax machines and marked with "re-inspection". If the re-inspection is qualified, it is judged to be qualified for the A group inspection; if the re-inspection is still unqualified, it is judged to be unqualified for the A group inspection. During the sample inspection, the contractor shall analyze the unqualified fax machines in the A group, find out the cause, take effective measures, and solve the problem effectively before resubmitting it for inspection
4.5.2.4 Sample handling
Samples that pass the A group inspection can be delivered as qualified products. 4. 5.3 Group C Qualification Inspection
4.5.3.1
Samples for Group C inspection shall be taken from the qualified batches of Group A inspection. One sample shall be taken from each batch for Group C inspection. With the permission of the ordering party, representative parts that are sensitive to environmental conditions may also be taken as samples, but the number shall be doubled. 4.5.3.2 Qualification Criteria
When conducting Group C inspection, if all items meet the requirements of product specifications, the Group C inspection is judged to be qualified; if any one of the items is qualified, it is judged to be unqualified for Group C.
4.5.3.3 New Inspection
If the sample fails the Group C inspection, it may be resubmitted only after the cause is identified and corrective measures are taken. Inspection. The number of re-inspections should be doubled,
and if the re-inspection is qualified, it is judged as qualified for the C group inspection; if the new inspection is unsatisfactory, it is judged as unqualified. 4.5.3.4 Sample processing
Except as otherwise specified, samples that have undergone (group) inspection shall not be submitted as qualified products. 4.5.3.5 Inspection cycle
The cycle of (group) inspection should be carried out once a year. When there are major changes in the structure, materials, components, and processes of the fax machine, which may affect the performance, (group) inspection should also be carried out: 4.5.4 D group inspection
4.5.4.1 Sampling
The selection of D group inspection products should be based on the qualified batch of A group inspection and ten random samples, and the number of samples should be The quantity shall be in accordance with the detailed product specifications. 4.5.4.2 Qualification criteria
If the sample fails the Group D test, the inspection and delivery of the product shall be stopped, and the manufacturer shall notify the superior appraisal agency of the non-conformity: after taking corrective measures, according to the advice 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 is still unqualified, the non-conformity shall be notified to the superior appraisal agency. 4.5.4.3 Sample handling
Unless otherwise specified, the manufacturer of the sample that has passed the Group D test shall be responsible for quality repair and replacement of all or part of the components that have consumed their designed life. After passing the Group A test, it shall be delivered as a qualified product. 10—
4.5.44 Inspection cycle
SI 20565—96
In addition to the electromagnetic compatibility test during the identification test, it shall be carried out when there are major changes in the design and process. The reliability test shall only be carried out once a year when the annual output is more than 100 units. 4.5.5 Unqualified
If the sample fails to pass the C group or ID group inspection, the acceptance and delivery of the product shall be stopped. The contractor shall notify the qualified identification unit of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the qualified identification unit, or only the unqualified items shall be tested or inspected. If the test still fails, the unqualified situation shall be notified to the qualified identification unit:
4.6 Inspection method
4.6.1 Appearance, structure
Application! Test method: Check the appearance and check the integrity of the fax machine according to the random documents, which shall comply with 3.4 and 3.5 or the requirements of the detailed specifications respectively.
4.6.2 Dimensions and weights
Measure the external dimensions of the fax machine with a tape measure, which shall comply with the requirements of 3.6 and the detailed specifications. Measure the mass of the fax machine with a scale, which shall comply with the requirements of 3.7 and the detailed specifications. 4.6.3 Shortwave receiving frequency specification and local oscillator frequency and frequency fine-tuning specification 4.6.3.1 Test circuit
Test circuit 2 Note: Connect the test machine (shortwave receiving information)
4.6.3.2 Test type
Effective frequency meter
a. Connect the effective frequency meter to the test point of the shortwave receiving device and the local oscillator circuit board: b. Connect the frequency meter L according to the requirements of Table 5 Take 10 frequency points, operate 3 frequency switches at the specified position, take out the local oscillator signal point by point, let the digital frequency and read the calculation -~Local oscillator frequency calculate its error in detail, all of which should meet the requirements of 3.8.1.2 and 3.8.1.3;
Frequency master switch position
"Platform"
Makeup constant rate
"Rate"
First oscillator frequency
ITKAONKAca-Select 10 frequency points on the frequency meter L as specified in Table 5, operate the three frequency switches to the specified positions, take out the local oscillator signal point by point, let the digital frequency be read out, calculate the error of the local oscillator frequency in detail, and all should meet the requirements of 3.8.1.2 and 3.8.1.3;
frequency master switch position
"Platform"
makeup constant rate
"rate"
first oscillator frequency
ITKAONKAca-Select 10 frequency points on the frequency meter L as specified in Table 5, operate the three frequency switches to the specified positions, take out the local oscillator signal point by point, let the digital frequency be read out, calculate the error of the local oscillator frequency in detail, and all should meet the requirements of 3.8.1.2 and 3.8.1.3;
frequency master switch position
"Platform"
makeup constant rate
"rate"
first oscillator frequency
ITKAONKAca-
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