SJ 2352-1983 SF-26 video tube SJ2352-1983 standard download decompression password: www.bzxz.net

Standard of the Ministry of Electronic Industry of the People's Republic of China SF-26 type video tube
This standard applies to SF-26 type video tube (hereinafter referred to as video tube). SJ235283
This tube is a common photoconductive video tube with a tube neck of 26 mm, antimony sulfide target surface, magnetic focusing, magnetic deflection, and a 6.3 volt 1 watt low-power filament. It is particularly suitable for semiconductor chemical industry television and closed-circuit television devices to convert optical images into electrical signals. This standard is a supplement to S1561-80 "General Technical Conditions for Video Tubes". Except for the contents specified in this standard, the rest shall be implemented in accordance with the relevant provisions of the General Technical Conditions for Video Tubes.
1 The external dimensions and electrode wiring of the video tube shall comply with the provisions of Figure 1 (Chapter 2 of SJ1561-80).中28.6±0.2
中26.5-0.5
Tube base size
9-01.27-.0
Figure 1SF-26 appearance and electrode wiring diagram
2The parameter specifications of the video tube should comply with the provisions of the parameter specification table. The Ministry of Electronics Industry of the People's Republic of China issued the signal electrode on August 15, 1983
Second anode
First anode
Modulation electrode
Electrode name
Implemented on December 1, 1983
Maximum value
Minimum value
Parameter name
Filament current
Leakage current between filament and cathode
Signal current
Image center
Resolution
Image four corners
Image center 400 lines modulation
Gray scale
Image geometric distortion
Image signal non-uniformity| |tt||Modulator cut-off voltage
Cathode quality coefficient
Modulation amount
Gamma value
Gas coefficient
Target output capacitance to all other electrodes
Life standard-signal current
Life standard-central resolution
Life standard-temperament
Filament voltage
Modulator voltage
SJ2352-83
Target surface temperature
Anode voltage
Modulator working
Operating voltage
Meet 15 column
Meet 15 column
Line 15 column
Meet 15 columns
Meet 15 columns
Meet 15 columns
Meet 15 columns
Meet 15 columns
Meet 24 columns
Meet 15 columns
Meet 15 columns
Meet 15 columns
Second anode voltage
First anode
Voltage
Second anode
Voltage
250~300
250~300
250~300
250~300
250~300
250~300
250~300
250~300|| tt||250~300
250~300
250~300
250~300
25C~300
250~300
250~300
250~300
250300
Filament to cathode voltage
Parameter specification table
Dark current
Dark current
Signal pole
Combined 13 columns
Conform to 13 columns
Conform to 13 columns
Combined 13 columns
Combined 13 columns
Combined 13 columns
Combined 13 columns
Combined 13 columns
Combined 13 columns
Combined 13 columns
Combined 13 columns| |tt||Combine 13 files
Combine 13 columns
Combine 13 columns
Combine 13 #
Meet 13 columns
Meet 13 columns
Meet 13 columns
Combine 13 columns
Meet 13 columns
Surface illuminance
100001x
Filament to cathode
electrode
Signal electrode
SJ2352--83
Scanning area
(Graphic scale)
9.6×12.8
9.6×12.8
9.6×12.8||t t||9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
9.6×12.8
Meet 15 columns
15 columns
15 columns
15 columns
15 columns||tt ||15th column of the line
15th column of the line
15th floor of the line
Test method
SJ349—73
SJ457-73
SJ1562-80
SJ1562-80
SJ1562—80
SJ1562--80
SJ156280
SJ1562-80
SJ156280
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80
SJ1562-80| |tt||SJ1562--80
SJ1562--80
SJ1562—80
SJ1562-80
SJ1562--80
SJ1562-80
08199T
Acceptance rules
Measurement after 60ms after the target surface stops being irradiated with light
" is the average value
la2=5μA
Measurement after 60ms after the target surface stops being irradiated with light
Preheating conditions
Filament voltage
Note, ① All potentials are relative to the cathode potential. SJ2352-83
② The test of parameters 3 to 8, 11, 15, 17, and 18 in the parameter specification table should be carried out under the same signal current value and the same modulator voltage. The signal current value should be 0.2uA, and the signal working voltage and modulator voltage must be within the rated value range listed in the table. When measuring the photoelectric conversion characteristics of the video tube, the target surface illumination change core diagram should make the signal current between 0.02uA and 0.2uA. 3 The non-coaxiality of the core column and the glass shell of the video tube should not affect the standard coil assembly (such as PJ-25 coil assembly) (SJ 1561--80 Chapter 3).
Assembly
4 The relative position of the coil assembly (correction, deflection, focusing coil) of the video tube and the target surface is recommended to be based on the assembly position of the PJ-25 type coil assembly (SJ1561--80 Chapter 4) See Figure 2. Focusing coil
Magnetic tube
Correction coil
Front screen knock cover
Line deflection line diagram
Electrostatic shieldingWww.bzxZ.net
Figure 2 Schematic diagram of SF-26 and PJ-25 coil assembly assembly 5 Requirements for the tube needle and target ring of the video tube (SJ 1561-80 Chapter 5) 5.1 The pin of the sight tube should be parallel to the axis of the sight tube, and the seal between it and the glass should be firm. Lay the sight tube flat, and apply force to any three pins in sequence. The point of action of the knife is set to be 6±0.2mm away from the bottom of the sight tube core column. The direction of the force is perpendicular to the pin, and the magnitude of the force is 1.5kgf. 5.2 The target ring of the sight tube should be firmly sealed with the glass shell and the glass slide. Apply a gradually increasing torque between the target ring and the glass shell, and the magnitude of the torque is 0.24kgf·m.
Take one step clockwise and one step counterclockwise along the target ring. Test. After the test, measure the gas coefficient of the video tube, which shall comply with the provisions of the parameter specification table of this standard. Requirements for the working surface of the video tube (Chapter 9 of SJ1561-80) 6
The working surface of the video tube is specified to be 9.6×12.8mm2, and the number, size and contrast of defects in the working surface shall meet the following requirements. The defect size is expressed in terms of the number of scanning lines in the 625 TV line system. The measurement is carried out under typical test conditions. Adjust the signal electrode voltage so that the dark current is equal to 0.02uA, and adjust the target surface illumination so that the signal current is 0.15uA.
6.1. The number, size and distribution of defects allowed in the quality partition diagram are as follows: 4. Defects occupying the number of TV lines. SJ2352-83. Not allowed. Defects of this size are allowed except for the state caused by the accumulation of the "*". Defects (or spots) are measured on the waveform oscilloscope. When the contrast is less than 50% of the image background, they are not counted. Defect size. The minimum gap between any two defects of two TV lines must be greater than 4% of the sub-grating height. c. When the number of defects in a certain area exceeds the number specified in the corresponding right in the table, the defects exceeding the size can be counted in the column with a size smaller than the defect.
After the video tube has been in service for 500 hours, two defects (points) are allowed to be added, but only one defect is allowed in the zone II. 6.2 The orientation of the video tube working surface should make the plane passing through the axis of the video tube and the axis of the short tube needle (reference tube needle) parallel to the horizontal scanning line. 7 After the video tube has been tested by connecting and disconnecting the filament voltage for 2000 hours, its working performance should still be stable (SJ1561-80 Chapter 10). The test conditions are stipulated as follows:
filament voltage
maximum, filament-to-cathode voltage
connection time
disconnection time
U, = 6.9V (DC or AC);
Ufk = -125V,
3min.
8 The target surface 1. The operating temperature range during the video tube test is stipulated as 25+5℃ (SJ1561-80 Chapter 11). 9 Vibration strength test of video tube (Chapter 13 of SJ1561-80) After the test, the provisions of Article 8 of SJ1561-80 shall be followed, and the leakage current of filament and cathode, image defects and gas coefficient in the photoelectric parameters shall be measured in accordance with the provisions of this standard.
10 The weight of the unpacked video tube is about 50 grams (Chapter 15 of SJ1561-80). 11 The magnetic field strength of the correction coil of the video tube is 0-4 Gauss (Chapter 16 of SJ1561-80), and the magnetic field strength of the center of the focusing coil is 40 Gauss.
12 Climate test of video tube (Chapter 42 of SJ1561-80) High temperature test conditions are 70 above 2℃;
Low temperature test conditions are -40 above 3℃.
After each climate test, the signal current, resolution, image signal non-uniformity and gas coefficient shall be measured, which shall be in accordance with the provisions of this standard.
13 The photoelectric conversion characteristics of the video tube are shown in Figure 3. 5
Yuan0 panel box degree ~300
KAO S approximate current = 002HA
SJ2352—88
Colored on the fat surface 2854K tungsten filament lamp degree (Ix) Figure 3 Photoelectric conversion characteristics
5060708090100
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