GB/T 5170.13-1985 Basic parameters verification method for environmental test equipment for electrical and electronic products Mechanical vibration table for vibration (sinusoidal) test GB/T5170.13-1985 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Environmental testing equipment for electric and electronic products
Basic parameters verification methods
Mechanical vibration table for vibration (sinusoidal) testUDC 621.3
.002.6-79
GB 5170.13—85
This standard specifies the verification methods for basic parameters of mechanical vibration table system (hereinafter referred to as vibration table) for vibration test according to GB2423.10 "Basic environmental test procedures for electric and electronic products Test Fc: Vibration (sinusoidal) test method". The vibration table consists of a vibration table body, a control device, and a vibration parameter measurement and display device. 1 Verification items
1.1 Rated parameters
1.1.1 Maximum load
1.1.2 Frequency range
1.1.9 Report amplitude
Maximum displacement amplitude:
b. Maximum acceleration amplitude.
1.2 Acceleration distortion
1.3 Lateral vibration (displacement)
1.4 Displacement amplitude uniformity of table
1.5 Frequency indication error
1.6 Frequency stability
1.7 Displacement amplitude indication error
1.8 Displacement value stability
1.9 Background noise acceleration
Background displacement amplitude
Sweep Frequency rate error
Sweep frequency positioning accuracy
Radiated noise maximum sound level
Continuous working time
2Main instruments for verification
Accelerometer,
Triaxial accelerometer;
National Bureau of Standards 1985-04-07 Issued
1986-01-01 Implementation
GB5170.13—85
C. Sine vibration measuring instrument (hereinafter referred to as vibration measuring instrument, which shall include multi-channel preamplifier, frequency selector, operator and display) d. Frequency meter,
e. Distortion measuring instrument
f. Level recorder,
B: Sound level meter
h. Stopwatch.
3 General provisions
3.1 Calibration load
The calibration load shall be made of metal material and shall be rigid and symmetrical in shape. Its mass, center of mass height and installation eccentricity shall comply with relevant regulations. The flatness of the surface connecting the load and the vibration table shall not exceed 0.1/1000, and the surface finish shall not be lower than Grade 5. The load shall be rigidly connected to the table, and the fixed points shall be evenly distributed and not less than 4.
3.2 Accelerometer
a. The vibration frequency of the accelerometer shall be greater than 10 times the frequency range limit of the vibration table. b. The accelerometer shall be rigidly fixed on the table or the specified fixed point. When measuring displacement, it is allowed to use a magnet seat to fix the accelerometer.
3.3 For multi-axial servo tables, the calibration of basic parameters shall be carried out separately in each axis. 8.4 When verifying the lateral vibration, acceleration waveform distortion and uniformity of the table displacement amplitude, the following displacement amplitudes and frequencies shall be used for testing respectively.
Maximum displacement amplitude, lower limit of frequency range. a
b. The displacement amplitude corresponding to the maximum acceleration amplitude at the upper limit of the frequency range; upper limit of the frequency range. Maximum displacement amplitude, upper limit frequency of the maximum displacement amplitude. c.
d Minimum displacement amplitude, frequency value corresponding to the minimum displacement amplitude and the minimum acceleration amplitude. Note: The maximum displacement amplitude is generally expressed as a decimal of the background displacement amplitude. ② The minimum acceleration amplitude is generally expressed as a decimal of the background noise acceleration. 3.5 The acceleration amplitudes described in this verification method refer to the fundamental acceleration amplitude. It can be calculated from the moving frequency and displacement amplitude according to formula (1):
= 0.004 A f
Where: a — fundamental wave acceleration amplitude, : A — displacement amplitude, mm;
f — frequency, Hz.
4 Verification method
4.1 Verification method of rated parameters of vibration table
Rated parameters of vibration table include:
, maximum load:
b. Frequency range:
center, maximum displacement amplitude,
d. Maximum acceleration amplitude.
4.1.1 Test conditions
The accelerometer is fixed at the center of the worktable or the load center, and its output is connected to the vibration meter. The displacement signal output by the vibration meter integration network is connected to the frequency meter (see Figure 1).
Accelerometer
Actuator
4.1.2 Test method
The vibration table is measured under no-load and full-load conditions. GB5170.13—85
Sub-camera
Note: If there is no requirement in the relevant standards, no no-load comparison is required. Frequency meter
4.1.2.1 The vibration table should be able to work normally when it is vibrated at a fixed frequency with the maximum displacement amplitude at the frequency that reaches the maximum displacement amplitude and the maximum acceleration amplitude.
4.1.2.2 The vibrating table should be able to work normally when it is vibrated at a fixed frequency with the displacement amplitude corresponding to the maximum acceleration amplitude at the upper limit of the frequency range. 4.1.2.3 The vibration table should be able to work normally when it is automatically swept back and forth at a rate of 1 octave/minute within the frequency range and the displacement amplitude corresponding to the upper limit of the frequency range and the maximum acceleration amplitude. 4.2 Method for determining the distortion of acceleration waveform 4.2.1 Test conditions
The accelerometer is fixed at the center of the worktable, and its output is connected to the distortion measuring instrument through the vibration meter (see Figure 2). A low-pass filter should be used, and the harmonic component should be included to no less than 5 times the upper limit of the vibration table frequency range. Camera
Accelerometer-
Reporting table
4.2.2 Test method
Distortion measuring instrument
Wavelet mold
The vibration table is empty or fully loaded. According to the provisions of Article 3.4, select the frequency and displacement amplitude for fixed-frequency vibration and measure the distortion of acceleration waveform. 43 Verification method for lateral movement (displacement) 4.3.1 Test conditions
The three-dimensional accelerometer is fixed at the center of the table and the two adjacent installation points farthest from the center of the worktable, and its output is connected to the vibration meter (see Figure 3).
Three-axis accelerometer
Vibration table
Measurement diameter
4.3.2 Test method
GB 5170.13—86
The vibration table is unloaded or fully loaded. Select the frequency and displacement amplitude as specified in 3.4 for fixed-frequency vibration. In the same measurement, measure the displacement amplitude in three directions at each measuring point. 4.3.3 Lateral vibration (displacement) ratio is calculated according to the following formula T
In the formula; A,
VA?+A?
-Displacement amplitude in the main vibration direction of the same measurement, mm, X100 %
Two lateral displacement amplitudes perpendicular to the main vibration direction in the same measurement, mm. ArA
4.4 Verification method for uniformity of displacement amplitude of table surface 4.4.1 Test conditions
The accelerometer is rigidly connected to the center of the worktable and the four installation points selected from the center. The output of each accelerometer is connected to the input channels of the vibration meter (see Figure 4).
Accelerometer
Vibration measurement equipment
4.4.2 Test method
The vibration table is empty or fully loaded. Select the frequency and displacement amplitude as specified in Article 3.4 for fixed frequency vibration. In the same measurement, measure the displacement amplitude of 5 positions respectively.
4.4.3 The uniformity of the displacement amplitude of the vibration table is calculated as follows: N
Wherein:
JAAmax
The displacement amplitude of the center point of the table in the same measurement, mm100%
The absolute value of the maximum deviation of the displacement amplitude of each installation point of the table relative to the displacement amplitude of the lower center point in the same measurement, mm.
4.5 Verification method of frequency indication error
4.5.1 Test conditions
Same as 4.1.1.
4.5.2 Test method
Within the specified no-load frequency range, select more than 5 frequencies for measurement, record the frequency indication of the vibration table and the frequency meter indication and calculate their errors.
4.6 Verification method of frequency stability
4.6.1 Test conditions
4.6.2 Test method
Report the vibration table as fully loaded. At the frequency where the vibration table reaches the maximum displacement amplitude and the maximum acceleration amplitude or at the L limit frequency of the frequency range, GB6170.13-85
Continuously vibrate at a fixed frequency with the maximum acceleration amplitude for a specified time, and record the minimum value of the frequency meter every 15 minutes. 4.6.3 The frequency stability is calculated according to the following formula:
△/m×100% or Afm
Formula: fo—
given test frequency indication, Hz3
The maximum deviation of the frequency meter indication relative to the given frequency value for each measurement, H2. 4.7 Verification of displacement amplitude indication error
4.7.1 Test conditions
Camera
Acceleration!
Shaking table displacement indication
Shaking table
4.7.2 Test method
Shaking table is unloaded. At the lower limit of the frequency range or the frequency at which the vibration table reaches the maximum displacement amplitude and the maximum acceleration amplitude, select 5 displacement amplitudes in the maximum displacement amplitude range and measure them in sequence, and record the displacement indication of the vibration table and the vibration meter. 4.7.3 The displacement amplitude indication error is calculated as follows: d
Where: aa——displacement indication of the vibration meter in the same measurement, mm; displacement indication of the moving table in the same measurement, mm. 4.8 Displacement amplitude stability
4.8.1 Test conditions
(5)
4.8.2 Test method
Full load of vibration table. At the frequency at which the vibration table reaches the maximum displacement amplitude and the maximum acceleration amplitude or the upper limit frequency of the frequency range, vibrate continuously at a fixed frequency for a specified time with the maximum acceleration amplitude, and record the displacement indication of the vibration meter once every 15 minutes. 4.8.3 The displacement amplitude stability is calculated as follows: AAmax
×100%
Where: A, — given displacement indication, mm, AAmax
The maximum deviation of the displacement indication of the vibration meter relative to the given value in each measurement, m. 4.9 Verification method of background noise acceleration
4.9.1 Test conditions
The accelerometer is fixed at the center of the workbench, and its output is connected to the vibration meter (the upper limit frequency is 5kHz). 4.9.2 Test method
The vibration table is unloaded. The displacement amplitude is adjusted to the minimum, and the frequency is slowly swept within the frequency range, and the maximum effective value of the noise acceleration is recorded. Table.10 Verification method of background displacement amplitude
4.10.1 Test conditions
4.10.2 Test method
GB 5170.13—85
The vibration table is unloaded. Adjust the displacement amplitude to the minimum, sweep the frequency slowly within the frequency range, and record the maximum displacement amplitude. 4.11 Verification of sweep rate error
In the no-load frequency range of the vibration table, sweep the frequency back and forth automatically at a rate of one octave per minute. The displacement amplitude is the displacement amplitude corresponding to the maximum acceleration amplitude on the frequency range 1: limit. Use a stopwatch to measure the time it takes for the vibration table to sweep one octave, and calculate its error
4.12 Verification of sweep positioning displacement amplitude accuracy 4.12.1 Test conditions
The accelerometer is fixed at the center of the workbench, and its output is connected to the vibration meter. The displacement signal output by the vibration meter integration network is connected to the Shenping recorder (see Figure 6).
Vibration meter
Accelerometer~
Vibration table
4.12.2 Test method
Level recorder
In the frequency range of the vibration table without load or full load, the frequency is automatically swept at a rate of one octave per minute. The displacement amplitude is the displacement amplitude corresponding to the maximum acceleration value at the upper frequency limit. The maximum deviation of the amplitude-frequency characteristic curve measured by the level recorder is the displacement amplitude accuracy of the frequency sweep.
4.13 Verification method of maximum sound level of radiated noise The vibration table is unloaded, vibrates at a fixed frequency with the maximum acceleration amplitude at the upper frequency range, and measures and records the maximum sound level with a sound level meter (A-weighted network) within the human height of 1m from the edge of the table. 4.14 Determination method of continuous operation time
a: The vibration table is fully loaded. According to 3.4! b. The vibration table should be able to operate normally at the frequency and amplitude specified in b or c within the specified continuous working time, and be tested according to Articles 4.6 and 4.8. b. The vibration table is fully loaded, and within the frequency range, the displacement amplitude corresponding to the maximum acceleration amplitude on the upper frequency limit is automatically swept at a rate of one octave per minute. Within the specified continuous working time, the vibration table should be able to operate normally. GB5170.13-85
Appendix A
Selection of calibration items
(reference)
When the vibration table is subjected to finalization identification, factory inspection and regular calibration, if there are no other provisions in the relevant standards or the supply and demand parties, the calibration items can be selected according to the table below.
Calibration items
Maximum load
Frequency range||t t||Frequency indication error
Frequency stability
Sweep rate error
Maximum displacement amplitude
Maximum acceleration amplitude
Background displacement amplitude
Background noise acceleration
Displacement amplitude indication error
Displacement amplitude stability
Table displacement amplitude uniformity
Sweep positioning displacement amplitude accuracy
Lateral reporting (displacement)
Acceleration waveform distortion
Maximum sound level of radiated noise
Continuous working time
Type appraisal
Factory delivery Inspection
Periodic Verification
Test Clauses
Note: ① The symbol "℃" indicates items that must be inspected; the symbol "△" indicates sampling inspection or optional inspection (referring to the inspection party or the inspected party who proposes the inspection).
② In view of the fact that some manufacturers only manufacture some devices in the vibration table system, during the finalization and inspection, the items No. 3 and 10 in Table A can be carried out on a single machine respectively.
GB5170.13—85
Appendix B
Basic parameter error requirements
(reference)
|When the vibration table is calibrated regularly, the error requirements of the basic parameters can be referred to Table B. Table B
Calibration Items
Frequency Index Error
Frequency Stability
Sweep Frequency Rate Error
Displacement Amplitude Indication Error
Displacement Amplitude Stability
Table Displacement Amplitude Average
Sweep Frequency Positioning Displacement Amplitude Accuracy
Lateral Vibration (Displacement)
Acceleration Waveform Distortion
Additional Notes:
Error Requirements
5~50Hz±iHzGreater than 50Hz+2%
5 ～50Hz±1Hz per hourMore than 50Hz±2%±10% per hour
±10% per hour
Not more than 25%
Not more than 15%
This standard is proposed by the National Technical Committee for Standardization of Environmental Conditions and Environmental Testing of Electrical and Electronic Products. This standard is drafted by the Working Group on Verification Methods of Basic Parameters of Environmental Testing Equipment. The main drafter of this standard is Yu Zengluo, the Ministry of Electronics Industry in the 1970s. Remarks
When the table area exceeds 1 m,
the error requirements are determined by the supply and demand parties
The error requirements below 10Hz are determined by the supply and demand parties.
Harmonic analysis includes up to 5 times the maximum sound frequency of the vibration table
3 The displacement amplitude stability is calculated as follows: AAmax
×100%
Where: A, — given displacement indication, mm, AAmax
The maximum deviation of the displacement indication of the vibration meter relative to the given value in each measurement, m. 4.9 Verification method of background noise acceleration
4.9.1 Test conditions
The accelerometer is fixed at the center of the workbench, and its output is connected to the vibration meter (the upper limit frequency is 5kHz). 4.9.2 Test method
The vibration table is unloaded. The displacement amplitude is adjusted to the minimum, and the frequency is slowly swept within the frequency range, and the maximum effective value of the noise acceleration is recorded. Table. 10 Verification method of background displacement amplitude
4.10.1 Test conditions
4.10.2 Test method
GB 5170.13—85
The vibration table is unloaded. Adjust the displacement amplitude to the minimum, sweep the frequency slowly within the frequency range, and record the maximum displacement amplitude. 4.11 Verification of sweep rate error
In the no-load frequency range of the vibration table, sweep the frequency back and forth automatically at a rate of one octave per minute. The displacement amplitude is the displacement amplitude corresponding to the maximum acceleration amplitude on the frequency range 1: limit. Use a stopwatch to measure the time it takes for the vibration table to sweep one octave, and calculate its error
4.12 Verification of sweep positioning displacement amplitude accuracy 4.12.1 Test conditions
The accelerometer is fixed at the center of the workbench, and its output is connected to the vibration meter. The displacement signal output by the vibration meter integration network is connected to the Shenping recorder (see Figure 6).
Vibration meter
Accelerometer~
Vibration table
4.12.2 Test method
Level recorder
In the frequency range of the vibration table without load or full load, the frequency is automatically swept at a rate of one octave per minute. The displacement amplitude is the displacement amplitude corresponding to the maximum acceleration value at the upper frequency limit. The maximum deviation of the amplitude-frequency characteristic curve measured by the level recorder is the displacement amplitude accuracy of the frequency sweep.
4.13 Verification method of maximum sound level of radiated noise The vibration table is unloaded, vibrates at a fixed frequency with the maximum acceleration amplitude at the upper frequency range, and measures and records the maximum sound level with a sound level meter (A-weighted network) within the human height of 1m from the edge of the table. 4.14 Determination method of continuous operation time
a: The vibration table is fully loaded. According to 3.4! b. The vibration table should be able to operate normally at the frequency and amplitude specified in b or c within the specified continuous working time, and be tested according to Articles 4.6 and 4.8. b. The vibration table is fully loaded, and within the frequency range, the displacement amplitude corresponding to the maximum acceleration amplitude on the upper frequency limit is automatically swept at a rate of one octave per minute. Within the specified continuous working time, the vibration table should be able to operate normally. GB5170.13-85
Appendix A
Selection of calibration items
(reference)
When the vibration table is subjected to finalization identification, factory inspection and regular calibration, if there are no other provisions in the relevant standards or the supply and demand parties, the calibration items can be selected according to the table below.
Calibration items
Maximum load
Frequency range||t t||Frequency indication error
Frequency stability
Sweep rate error
Maximum displacement amplitude
Maximum acceleration amplitude
Background displacement amplitude
Background noise acceleration
Displacement amplitude indication error
Displacement amplitude stability
Table displacement amplitude uniformity
Sweep positioning displacement amplitude accuracy
Lateral reporting (displacement)
Acceleration waveform distortion
Maximum sound level of radiated noise
Continuous working time
Type appraisal
Factory delivery Inspection
Periodic Verification
Test Clauses
Note: ① The symbol "℃" indicates items that must be inspected; the symbol "△" indicates sampling inspection or optional inspection (referring to the inspection party or the inspected party who proposes the inspection).
② In view of the fact that some manufacturers only manufacture some devices in the vibration table system, during the finalization and inspection, the items No. 3 and 10 in Table A can be carried out on a single machine respectively.
GB5170.13—85
Appendix B
Basic parameter error requirements
(reference)
|When the vibration table is calibrated regularly, the error requirements of the basic parameters can be referred to Table B. Table B
Calibration Items
Frequency Index Error
Frequency Stability
Sweep Frequency Rate Error
Displacement Amplitude Indication Error
Displacement Amplitude Stability
Table Displacement Amplitude Average
Sweep Frequency Positioning Displacement Amplitude Accuracy
Lateral Vibration (Displacement)
Acceleration Waveform Distortion
Additional Notes:
Error Requirements
5~50Hz±iHzGreater than 50Hz+2%
5 ～50Hz±1Hz per hourMore than 50Hz±2%±10% per hour
±10% per hour
Not more than 25%
Not more than 15%
This standard is proposed by the National Technical Committee for Standardization of Environmental Conditions and Environmental Testing of Electrical and Electronic Products. This standard is drafted by the Working Group on Verification Methods of Basic Parameters of Environmental Testing Equipment. The main drafter of this standard is Yu Zengluo, the Ministry of Electronics Industry in the 1970s. Remarks
When the table area exceeds 1 m,
the error requirements are determined by the supply and demand parties
The error requirements below 10Hz are determined by the supply and demand parties.
Harmonic analysis includes up to 5 times the maximum sound frequency of the vibration table
3 The displacement amplitude stability is calculated as follows: AAmax
×100%
Where: A, — given displacement indication, mm, AAmax
The maximum deviation of the displacement indication of the vibration meter relative to the given value in each measurement, m. 4.9 Verification method of background noise acceleration
4.9.1 Test conditions
The accelerometer is fixed at the center of the workbench, and its output is connected to the vibration meter (the upper limit frequency is 5kHz). 4.9.2 Test method
The vibration table is unloaded. The displacement amplitude is adjusted to the minimum, and the frequency is slowly swept within the frequency range, and the maximum effective value of the noise acceleration is recorded. Table. 10 Verification method of background displacement amplitude
4.10.1 Test conditions
4.10.2 Test method
GB 5170.13—85
The vibration table is unloaded. Adjust the displacement amplitude to the minimum, sweep the frequency slowly within the frequency range, and record the maximum displacement amplitude. 4.11 Verification of sweep rate error
In the no-load frequency range of the vibration table, sweep the frequency back and forth automatically at a rate of one octave per minute. The displacement amplitude is the displacement amplitude corresponding to the maximum acceleration amplitude on the frequency range 1: limit. Use a stopwatch to measure the time it takes for the vibration table to sweep one octave, and calculate its error
4.12 Verification of sweep positioning displacement amplitude accuracy 4.12.1 Test conditions
The accelerometer is fixed at the center of the workbench, and its output is connected to the vibration meter. The displacement signal output by the vibration meter integration network is connected to the Shenping recorder (see Figure 6).
Vibration meter
Accelerometer~
Vibration table
4.12.2 Test method
Level recorder
In the frequency range of the vibration table without load or full load, the frequency is automatically swept at a rate of one octave per minute. The displacement amplitude is the displacement amplitude corresponding to the maximum acceleration value at the upper frequency limit. The maximum deviation of the amplitude-frequency characteristic curve measured by the level recorder is the displacement amplitude accuracy of the frequency sweep.
4.13 Verification method of maximum sound level of radiated noise The vibration table is unloaded, vibrates at a fixed frequency with the maximum acceleration amplitude at the upper frequency range, and measures and records the maximum sound level with a sound level meter (A-weighted network) within the human height of 1m from the edge of the table. 4.14 Determination method of continuous operation time
a: The vibration table is fully loaded. According to 3.4! b. The vibration table should be able to operate normally at the frequency and amplitude specified in b or c within the specified continuous working time, and be tested according to Articles 4.6 and 4.8. b. The vibration table is fully loaded, and within the frequency range, the displacement amplitude corresponding to the maximum acceleration amplitude on the upper frequency limit is automatically swept at a rate of one octave per minute. Within the specified continuous working time, the vibration table should be able to operate normally. GB5170.13-85
Appendix A
Selection of calibration items
(reference)
When the vibration table is subjected to finalization identification, factory inspection and regular calibration, if there are no other provisions in the relevant standards or the supply and demand parties, the calibration items can be selected according to the table below.
Calibration items
Maximum load
Frequency range||t t||Frequency indication error
Frequency stability
Sweep rate error
Maximum displacement amplitude
Maximum acceleration amplitude
Background displacement amplitude
Background noise acceleration
Displacement amplitude indication error
Displacement amplitude stability
Table displacement amplitude uniformity
Sweep positioning displacement amplitude accuracy
Lateral reporting (displacement)
Acceleration waveform distortion
Maximum sound level of radiated noise
Continuous working time
Type appraisal
Factory delivery Inspection
Periodic Verification
Test Clauses
Note: ① The symbol "℃" indicates items that must be inspected; the symbol "△" indicates sampling inspection or optional inspection (referring to the inspection party or the inspected party who proposes the inspection).
② In view of the fact that some manufacturers only manufacture some devices in the vibration table system, during the finalization and inspection, the items No. 3 and 10 in Table A can be carried out on a single machine respectively.
GB5170.13—85
Appendix B
Basic parameter error requirements
(reference)
|When the vibration table is calibrated regularly, the error requirements of the basic parameters can be referred to Table B. Table B
Calibration Items
Frequency Index Error
Frequency Stability
Sweep Frequency Rate Error
Displacement Amplitude Indication Error
Displacement Amplitude Stability
Table Displacement Amplitude Average
Sweep Frequency Positioning Displacement Amplitude Accuracy
Lateral Vibration (Displacement)
Acceleration Waveform Distortion
Additional Notes:
Error Requirements
5~50Hz±iHzGreater than 50Hz+2%
5 ～50Hz±1Hz per hourMore than 50Hz±2%±10% per hour
±10% per hour
Not more than 25%
Not more than 15%
This standard is proposed by the National Technical Committee for Standardization of Environmental Conditions and Environmental Testing of Electrical and Electronic Products. This standard is drafted by the Working Group on Verification Methods of Basic Parameters of Environmental Testing Equipment. The main drafter of this standard is Yu Zengluo, the Ministry of Electronics Industry in the 1970s. Remarks
When the table area exceeds 1 m,
the error requirements are determined by the supply and demand parties
The error requirements below 10Hz are determined by the supply and demand parties.
Harmonic analysis includes up to 5 times the maximum sound frequency of the vibration table
13-85
Appendix A
Selection of Verification Items
(Reference)
When the vibration table is subjected to finalization appraisal, factory inspection and regular verification, if there are no other provisions in the relevant standards or between the supply and demand parties, the verification items can be selected according to the following table.
Verification Items
Maximum Load
Frequency Range
Frequency Indication Error
Frequency Stability
Sweep Rate Error
Maximum Displacement Amplitude
Maximum Acceleration Amplitude
Background Displacement Amplitude
Background Noise Acceleration
Displacement Amplitude Indication Error
Displacement Amplitude Stability
Uniformity of Displacement Amplitude on the Table
Sweep Frequency Displacement amplitude accuracy
Transverse motion (displacement)
Acceleration waveform distortion
Maximum sound level of radiated noise
Continuous working time
Type identification
Factory inspection
Periodic calibration
Test clauses
Note: ①The symbol "℃" indicates the items that must be inspected; the symbol "△" indicates the items that are sampled or selected for inspection (either the inspector or the inspected party proposes the items that need to be inspected).
②In view of the fact that some manufacturers only manufacture some devices in the vibration table system, during the type identification and factory inspection, the items No. 3 and 10 in Table A can be carried out on a single machine respectively.
GB5170.13—85
Appendix B
Basic parameter error requirements
(reference)
When the vibration table is regularly calibrated, the error requirements of the basic parameters can be referred to Table B. Table B
Verification Items
Frequency index error
Frequency stability
Sweep frequency rate error
Displacement amplitude indication error
Displacement amplitude stability
Table displacement amplitude average
Sweep frequency positioning displacement amplitude accuracy
Lateral vibration (displacement)
Acceleration waveform distortion
Additional notes:
Error requirements
5~50Hz±iHzGreater than 50Hz+2%
5~50Hz±1Hz per hourGreater than 50Hz±2%±10% per hour
±10% per hour
Not more than #25%
Not more than 15%
This standard is proposed by the National Technical Committee for Standardization of Environmental Conditions and Environmental Testing for Electrical and Electronic Products. This standard was drafted by the Working Group on Verification Methods for Basic Parameters of Environmental Test Equipment. The main drafter of this standard was Yu Zengluo of the Ministry of Electronics Industry in the 1970s. Remarks
When the table area exceeds 1 m,
the error requirements shall be determined by the supplier and the demander.
The error requirements below 10Hz shall be determined by the supplier and the demander.
Harmonic analysis includes up to 5 times the maximum sound frequency of the vibration table.13-85
Appendix A
Selection of Verification Items
(Reference)
When the vibration table is subjected to finalization appraisal, factory inspection and regular verification, if there are no other provisions in the relevant standards or between the supply and demand parties, the verification items can be selected according to the following table.
Verification Items
Maximum Load
Frequency Range
Frequency Indication Error
Frequency Stability
Sweep Rate Error
Maximum Displacement Amplitude
Maximum Acceleration Amplitude
Background Displacement Amplitude
Background Noise Acceleration
Displacement Amplitude Indication Error
Displacement Amplitude Stability
Uniformity of Displacement Amplitude on the Table
Sweep Frequency Displacement amplitude accuracy
Transverse motion (displacement)
Acceleration waveform distortion
Maximum sound level of radiated noise
Continuous working time
Type identification
Factory inspection
Periodic calibration
Test clauses
Note: ①The symbol "℃" indicates the items that must be inspected; the symbol "△" indicates the items that are sampled or selected for inspection (either the inspector or the inspected party proposes the items that need to be inspected).
②In view of the fact that some manufacturers only manufacture some devices in the vibration table system, during the type identification and factory inspection, the items No. 3 and 10 in Table A can be carried out on a single machine respectively.
GB5170.13—85
Appendix B
Basic parameter error requirements
(reference)
When the vibration table is regularly calibrated, the error requirements of the basic parameters can be referred to Table B. Table B
Verification Items
Frequency index error
Frequency stability
Sweep frequency rate errorWww.bzxZ.net
Displacement amplitude indication error
Displacement amplitude stability
Table displacement amplitude average
Sweep frequency positioning displacement amplitude accuracy
Lateral vibration (displacement)
Acceleration waveform distortion
Additional notes:
Error requirements
5~50Hz±iHzGreater than 50Hz+2%
5~50Hz±1Hz per hourGreater than 50Hz±2%±10% per hour
±10% per hour
Not more than #25%
Not more than 15%
This standard is proposed by the National Technical Committee for Standardization of Environmental Conditions and Environmental Testing for Electrical and Electronic Products. This standard was drafted by the Working Group on Verification Methods for Basic Parameters of Environmental Test Equipment. The main drafter of this standard was Yu Zengluo of the Ministry of Electronics Industry in the 1970s. Remarks
When the table area exceeds 1 m,
the error requirements shall be determined by the supplier and the demander.
The error requirements below 10Hz shall be determined by the supplier and the demander.
Harmonic analysis includes up to 5 times the maximum sound frequency of the vibration table.
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