SJ 20266-1993 TEK1411 video signal generator TSG12 convergence pattern signal generator unit verification procedures SJ20266-1993 Standard download decompression password: www.bzxz.net

Military Standard of Electronic Industry of the People's Republic of China FL0150
SJ20266--93
TEK1411 Video Signal Generator
TSG12 Convergence Pattern Signal Generator Unit
Verification Regulation
Yerification Regulation of Convergence Pattern Signal Generator Module TSG 12in Video Signal Generator Type TEK 14111993-02---09 Issued
China Electronics Industry Corporation
1993-05-01 Implementation
Military Standard of Electronic Industry of the People's Republic of China TEK1411 Video Signal Generator
TSG 12 Convergence Pattern Signal Generator Unit Verification Regulation
Verification Regulation of Convergence Pattern Signal Generator Module TsG12in Video Signal Generator Type TEK 14111 Scope
1.1 Subject Content
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This verification procedure specifies the verification conditions, verification items, verification methods, verification result processing and verification cycle of the TEK1411 video signal generator TSG12 convergence pattern signal generator unit.
1.2 Scope of Application
This verification procedure is applicable to the verification of the TEK1411 video signal generator TSG12 convergence pattern signal generator unit. 2 References
This chapter has no clauses:
3 Definitions
This chapter has no clauses,
1993-0501 implementation
China Electronics Industry Corporation 1993-02-19 Issue 1
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4 General requirements
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4.1 Purpose and principle of the instrument under test
TSG12 convergence pattern signal generator unit of TEK1411 video signal generator The whole circuit consists of horizontal center timing circuit, remote control size circuit, vertical center timing circuit, logic circuit, de-excitation circuit, filter circuit, output amplifier circuit TSG12 provides dots, vertical lines, horizontal lines, checkerboard patterns. Convergence pattern signals can be used to measure the scanning linearity, aspect ratio (width-to-height ratio), geometric distortion and other performances of image monitors or cameras.
4.2 Technical requirements
4.2.1 Line and point pulse amplitude
525±25mV.
4.2.2 Line and point pulse rise and fall time 115±15ns.
4.2.3 Vertical line pulse width
225±40ns.
4.2.4 Point pulse width
225±40ns.
4.2.5 Tunneling DC level
OV=50mV.
4.2.6 Synchronization amplitude
300±3mV.
4.2.7 Synchronization rise time
250±50ns.
4.3 Verification conditions
4.3.1 Environmental conditions
a. Ambient temperature: 20±2℃
b. Relative humidity: 45%~75%:
c. Atmospheric pressure: 8
86~106kPa:
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d. Power supply: 220V±2%, 50Hz±1%; e. Surrounding environment: no direct sunlight, no mechanical vibration and electromagnetic field interference that may affect normal operation.
4.3.2 Calibration equipment
4.3.2.1 TV waveform monitorbZxz.net
“A—B\ mode. Common mode rejection ratio: 66dB\A--B mode. Frequency response: ±0.5% (50kHz5MHz) Reference model: TEK148I (ModW5F) waveform monitor 4.3.2.2 Video amplitude calibration device
Amplitude measurement range: 0~999.9mV (peak); amplitude measurement accuracy: 0.05%:
Reference model: TEKVAC video amplitude calibration device. 4.3.2.3 Oscilloscope
Time interval measurement accuracy: 1%:
Vertical recording sensitivity: 2mV/div
Reference model: TEK2445, 2465A oscilloscope. 4 .3.2.4 Auxiliary equipment
750 through-type load;
750 load.
Detailed requirements
5.1 Verification items and verification methods
5.1.1 Appearance and normal working inspection
5.1.1.1 The inspected instrument shall be accompanied by the product technical manual and necessary accessories. If it is not the first verification, the previous verification certificate shall be attached.
5.1.1.2 The appearance of the inspected instrument shall have no obvious mechanical damage that affects its normal working, and the key jump step shall be flexible and reliable.
5.1.1.3 Before verification, the instrument shall be preheated for 30 minutes. During the verification process, unless otherwise specified, the instrument shall be preheated for 30 minutes. 12 Convergence pattern signal generator unit should press the \CONVERENCE button and release all other buttons. 5.1.2 Verification of line (vertical line, horizontal line) and point pulse amplitude 5.1.2.1 Connect the device according to Figure 1.
Visual input
Waveform monitor
Visual amplitude calibration device
Connect the TSG12 convergence pattern signal output J of 1411 to the A input terminal of the waveform monitor, and connect the other loop-through input terminal of channel A to a 750 load. Connect the output terminal of the video amplitude calibration device to the B input terminal of the waveform monitor. 5.1.2.2 Set the input control switch of the waveform monitor to the \A-B position of the DC coupling mode, and respond (RESP ONSE) control switch to FLAT position. DCRESTORER switch to FAST, BACKPORCH, and scan speed to 10us/div. Video amplitude calibration device PRESET/MANUAL switch to -MANLAL 5.1.2.3 Press CONVERGENCE button and VERTLINES button to make TSG12 output vertical line pulse signal. Set the video amplitude calibration device's dial switch to 525mV.
5.1.2.4 Set the waveform monitor's voltage full scale switch to 0.2V/div. Finely adjust the dial switch to make the bottom line of the vertical line pulse of the bias signal displayed on the waveform monitor and the top of the vertical line pulse of the reference signal on the same horizontal line. At this time, the dial switch reading of the video amplitude calibration device is the actual value of the vertical line pulse amplitude. Record the data in Table A1 of Appendix A (Supplementary Part)
5.1.2.5 Verify the horizontal line pulse amplitude and the point pulse amplitude value by the same method, and record the data in Table A1.
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5.1.3 Verification of the rise and fall time of the horizontal and point pulses 5.1.3.1 Connect the instrument according to Figure 2.
o Input
Oscilloscope
5.1.3.2 Make TSG12 convergence pattern signal output J, and connect it to the input end of the oscilloscope through a 750 through-type load. Press the vertical line (VERTLINES) button of TSG12 to make TSG12 output the vertical line signal. Use the time cursor △T of the oscilloscope to measure the rise time and fall time of the vertical line signal waveform respectively. Use the same method to measure the rise and fall time of the horizontal line and point pulse signal waveforms. Record the data in Table A2. 5.1.4 Verification of vertical line pulse width
5.1.4.1 Connect the instrument according to Figure 2. Make TSG12 convergence pattern signal output J: connect to the oscilloscope input terminal through a 750 through-type load. 5.1.4.2 Press the TSG 12 vertical line (VERTL1NES) button to make TSG 12 output vertical line pulse signal. Use the oscilloscope's time cursor △1 to measure the pulse width of the vertical line signal. Record the data in Table A3. 5.1.5 Verification of dot pulse width
5.1.5.1 Connect the instrument according to Figure 2. Make TSG12 convergence pattern signal output J: connect to the oscilloscope input terminal through a 759 through-type load. 5.1.5.2 Press the dot (DOTS) button,Make TSC 12 output dot pulse signal, and use the time cursor of the oscilloscope to measure the pulse width of the dot signal. Record the data in Table A4.
5.1.6 Verification of blanking DC level
5.1.6.1 Connect the instrument according to Figure 2. Connect the convergence pattern signal output terminal J of TSG12 to the input terminal of the oscilloscope through a 750 through-type load. 5
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5.1.6.2 Press the vertical line (VERTLINES) button, the horizontal line (HORIZON-AL LINES) button and the dot (DOTS) button to make TSG 12 output the convergence pattern signal.
5.1.6.3 Set the vertical sensitivity switch of the oscilloscope to 5mV/div, and the horizontal scanning time base to 10us/tiv.
5.1.6.4 Set the oscilloscope input coupling mode switch to the "ground" position. Adjust the oscilloscope so that the △V amplitude cursor line coincides with the scanning line (ground potential), then set the input coupling mode switch to the "DC" coupling position, and adjust the △√ other cursor line to the blanking level position of the displayed waveform. The A display value at this time is the blanking level value of the measured signal. Record the data in Table A5.
5.1.7 Verification of synchronization amplitude
5.1.7.1 Connect the instrument according to Figure 1. Connect the TSG 12 convergence pattern signal output terminal J3 to the A input terminal of the waveform monitor, and the other loop-through input of the A channel should be terminated with a 750 load. Connect the output terminal of the video amplitude calibration device to the B input of the waveform monitor.
5.1.7.2 According to 5.1.2.2~5.1.2.4 Measure the synchronous amplitude value by the method of the following. Record the measured data in Table A6.
5.1.8 Verification of synchronous rise time
5.1.8.1 Connect the instrument according to Figure 2. Connect the output terminal J: of the TSG 12 convergence pattern signal to the input terminal of the oscilloscope through a 75n through-type load. 5.1.8.2 Press the vertical line (VERTLINES) button. Use the oscilloscope time cursor AT to measure the rise time of the leading edge (10% to 90%) of the synchronous waveform. Record the data in Table A7.
5.2 Verification result processing and verification cycle
5. 2. 1 TEK 1411. video signal generator TSG 12 that has passed the verification Converging pattern signal generator unit, issue a verification certificate: if unqualified, issue a verification result notice and indicate the date of unqualified items.
5.2.2 The verification period is one year. It can be sent for inspection at any time if necessary. 6
Straight practice
Horizontal line
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Appendix A
Verification record table format
(Supplement)
Verification of line and point pulse amplitude
Nominal value
Actual value
Verification of line and point pulse rise and fall timeNominal value
Vertical line pulse width
Actual value
Verification of vertical line pulse width
Nominal value||tt| |Actual value
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Point pulse width
Blanking DC level
Step amplitude
Step rise time
Additional instructions:
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Verification of point pulse width
Nominal value
Verification of blanking level
Nominal tracking
Verification of synchronization amplitude
Nominal value
Verification of synchronization rise time
Standard value
Actual value
Actual value
Actual value
This standard is proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. This standard is drafted by Dalian Television Factory.
The main drafter of this standard: Yang Shuichuan.
Project code: 075-1~47.
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