1、EIA 256-A 65 m 3234680 OQb3ib m -, JANUARY, 1965 EIA STANDARD on DEFLECTING YOKES FOR CATHODE RAY TUBES ELECTRONIC INDUSTRIES ASSOCIATION STANDARD RS-256-A y- . Formulated by JEDEC Electron Tube Council II II EIA 256-A 65 = 3234600 DO63587 T NOTICE These standards, adopted and issued by the Electron
2、ic Industries Association, were formulated by the Electron Tube Council of the Joint Electron Device Engineering Councils. EIA engineering standards are designed to serve the public interest through eliminating mis- understandings between manufacturers and purchasers, facilitating interchangeability
3、 and improve- ment of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such standards shall not in any respect preclude any member or non-member of EIA from manufacturing or selling producta not conforming to
4、 such standards. Recommended standards adopted by EIA are without any regard to whether or not their adop- tion may in any way involve patents on articles, materials, or processes. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to pa
5、rties adopting the recommended standards. Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 11 West 42nd Street, New York 36, N. Y. 8 Electronic Industries Association 1965 AI1 rights reserved Price $.90 - Printed in U.S.A. EIA 256-A 65 3234b00 0063588 L E RS-256-A Page 1 I DEFLE
6、CTING YOKES FOR CATHODE RAY TUBES (From EIA Standards RS-256 and Standards PToposals 773 and 812 foTmulated under the cognizance of JEDEC Committee JT-6 on Cathode Ray Tubes) O TABLE OF CONTENTS Page 2 3 70-Degree Neck-Shadow Deflecting Yoke (JEDEC No. 118) 70-Degree Deflecting Yoke (JEDEC No. 120)
7、90-Degree Neck-Shadow Deflecting Yoke (JEDEC No. 119) 4 90-Degree Deflecting Yoke (JEDEC No. 121) 110-Degree Neck-Shadow Deflecting Yoke (JEDEC No. 135) 110-Degree Deflecting Yoke (JEDEC No. 139) 5 6 7 a 114-Degree Deflecting Yoke (JEDEC No. 143) 8 92-Degree Deflecting Yoke (JEDEC No. 144) 9 a EIA 2
8、56-A 65 = 3234600 00b3589 3 RS-256-A Page 2 70-DEGREE NECK-SHADOW DEFLECTING YOKE JEDEC No. 118 1. PURPOSE To define the limit for deflected beam clearance in 70“ cathode-ray picture tubes by means of a standard deflecting yoke. 2. MECHANICAL The dimensions of the yoke are specified on the accompany
9、ing diagram. The inside surface of the yoke shall be insulated. Horizontal Coil Inductance. . 11 2 20% millihenries Vertical Coil Resistance . 45 t 20% ohms 3. ELECTRICAL 4. PERFORMANCE A standard yoke must have the same neck-shadow characteristics within -L 1% as the primary stand- ard yoke maintai
10、ned by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated at 5 ya beam current and 16 kv anode voltage with the scanning axes of the yoke aligned with the corresponding
11、 axes of the screen. Beam-centering and ion-trap adjustments shall be made so that the neckishadow is symmetrical. The focusing coil, if needed, shall be placed on the tube so that the center of its air gap is located 3.26“ behind the reference line. The diagonal of the raster shall be measured and
12、shall be within rr: 1% of the dimensions obtained with the primary standard yoke. 64.5“ / I I I / I I 5.0 DIA,MAX. rO.375 MAX. I REF: LINE PE 2.6 MAX. L INSIDE CONTOUR CONFORMS TO INSIDE CONTOUR OF JEDEC REFERENCE LINE GAUGE GI10 WITHIN ZONE “A“ ALL DlhENSIONS IN INCHES :R RS-256-A EIA 256-A 65 3234
13、600 0063590 T E Page 3 70-DEGREE DEFLECTING YOKE JEDEC No. 120 1. PURPOSE To establish a standard yoke for 70“ cathode-ray picture tubes which would be used to measure such performance characteristics as pin cushion, deflection def ocusing, and light output, and would also define the limit for defle
14、cted beam clearance in accordance with Standard Yoke JEDEC No. 118. 2. MECHANICAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. 3. ELECTRICAL Horizontal Coil Inductance. . 11 f 20% millihenries Vertical Coil Resistance . 45 f
15、 20% ohms 4. PERFORMANCE A standard yoke must have the same linearity, pin cushion, and focusing characteristics as the pri- mary standard maintained by EIA. In addition to the above requirement, the yoke under test must have the same neck-shadow charac- teristics within f 1% as the primary standard
16、 yoke maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated at 5 pa beam current and 16 kv anode voltage with the scanning axes of the yoke aligned with the
17、corresponding axes of the screen. Beam-center- ing and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The focusing coil, if needed, shall be placed on the tube so that the center of its air gap is located 3.25“ behind the reference line. The diagonal of the raster shall b
18、e measured and shall be within f 1% of the dimen- sions obtained with the primary standard yoke. 64.5O r0.375 MAX. ALL DIMENSIONS IN INCHES . _ EIA 256-A b5 3234b00 00b3591 L m WS-256-A Page 4 90-DEGREE NECK-SHADOW DEFLECTING YOKE JEDEC No. 119 1. PURFSE To define the limit for deflected beam cleara
19、nce in 90“ cathode-ray picture tubes by means of a standard deflecting yoke. 2. MECHAMCAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. 3. ELECTRICAL Horizontal Coil Inductance. . 11 k 20% millihenries Vertical Coil Resistanc
20、e . 45 t 20% ohms 4. PERFORMANCE A standard yoke must have the same neck-shadow characteristics within f 1% as the primary stand- ard yoke maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard,
21、 the picture tube shall be operated at 5 pa beam current and 16 kv anode voltage with the scanning axes of the yoke aligned with the corresponding axes of the screen. Beam-centering and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The focusing coil, if needed, shall be
22、placed on the tube so that the center of its air gap is located 3.25“ behind the reference .ne. The diagonal of the raster shall be measured and shall be within =r: 1% of the dimensions obtained with the primary standard yoke. 1.500 DIA. 1iIIN.-l INSIDE CONTOUR CONFORMS TO INSIDE CONTOUR OF JEDEC RE
23、FERENCE LINE GAUGE GI16 WITHIN ZONE ha“. ALL DIMENSIONS IN INCHES EIA 256-A 65 3234600 0063592 3 RS-256-A Page 5 90-DEGREE DEFLECTING YOKE JEDEC No. 12P 1. PURPOSE To establish a standard yoke for 90“ cathode-ray picture tubes which would be used to measure such perf ormance characteristics as pin c
24、ushion, deflection defocusing, and light output, and would also define the limit for deflected beam clearance in accordance with Standard Yoke JEDEC No. 119. 2. MECHANICAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. 3. ELEC
25、TRICAL Horizontal Coil Inductance. . 11 =k 20% millihenries Vertical Coil Resistance . 45 % 20% ohms 4. PERFORMANCE A standard yoke must have the same linearity, pin cushion, and focusing characteristics as the pri- mary standard yoke maintained by EIA. In addition to the above requirement, the yoke
26、 under test must have the same neck-shadow charac- teristics mithin k 1% as the primary standard yoke maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated a
27、t 5 pa beam current and 16 kv anode voltage with the scanning axes of the yoke aligned with the corresponding axes of the screen. Beam-center- ing and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The focusing coil, if needed, shall be placed on the tube so that the cent
28、er of its air gap is located 3.25“ behind the reference line. The diagonal of the raster shall be measured and shall be within & 1% of the dimen- sions obtained with the primary standard yoke. 5.25 DIA. MAX. I I L- 3.244 DIA. I 1.500 DIA. YIN.-L-+d I / LINSIDE CONTOUR CONFORMS TO INSIDE CONTOUR OF J
29、EDEC REFERENCE LINE GAUQE O116 WITHIN ZONE “A“ ALL DIMENSIONS IN INCHES _- Y EIA 25b-A b5 3234600 00b3593 5 RS-256-A Page 6 P 10-DEGREE NECK-SHADOW DEFLECTING YOKE JEDEC No. 135 1. PURPOSE To define the limit for deflected beam clearance in 110“ cathode-ray picture tubes by means of a standard defle
30、cting yoke. 2. MECIIANICAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. Horizontal Coil Inductance. . 11 f 20% millihenries Vertical Coil Resistance . 45 f 20% ohms 3. ELECTRICAL 4. PERFORMANCE A standard yoke must have the
31、same neck-shadow characteristics within +- 1% as the primary stand- ard yoke maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated at 5 pa beam current and 1
32、6 kv anode voltage with the scanning axes of the yoke aligned with the corresponding axes of the screen. Beam-centering and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The diagonal of the raster shall be measured and shall be within -t- 1% of the dimensions obtained wi
33、th the primary standard yoke. /-l- 1.168 DIA. MIN. ALL IN DIMENSIONS INCHES INSIDE CONTOUR CONFORMS TO INSIDE CONTOUR OF JEDEC REFERENCE LINE GAUGE GI26 WITH- IN ZONE r. WITHIN ZONE “ THE “X“ VALUE MAY NOT EXCEED THE VALUE DETERMINED FROM THE GENERATING EQUATION OF JEDEC REFER- ENCE LINE GAUGE 0 126
34、 (Y= 0.5EX2 t 0.576). RS-256-A EIA- 256-A 65 3234600 0063574 7 Page 7 110-DEGREE DEFLECTING YOJU JEDEC No. 139 1. PURPOSE To establish a standard yoke for 110“ cathode-ray picture tubes which would be used to measure such performance characteristics as pin cushion, deflection defocusing, and light o
35、utput, and would also define the limit for deflected beam clearance in accordance with Standard Yoke JEDEC No. 135. 2. MECHANICAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. 3. ELECTRICAL Horizontal Coil Inductance. . 11 +-
36、 20% millihenries Vertical Coil Resistance . 45 + 2076 ohms 4. PERFORMANCE A standard yoke must have the same linearity, pin cushion, and focusing characteristics as the pri- mary standard yoke maintained by EIA. In addition to the above requirement, the yoke under test must have the same neck-shado
37、w charac- teristics within f 1% as the primary standard yoke maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated at 5 pa beam current and 16 kv anode volta
38、ge with the scanning axes of the yoke aligned with the corresponding axes of the screen. Beam-center- ing and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The focusing coil, if needed, shall be placed on the tube so that the center of its air gap is located 3.25“ behind
39、 the reference line. The diagonal of the raster shall be measured and shall be within f 1% of the dimen- sions obtained with the primary standard yoke. 1.168 DIA. MIN. ALL DIMENSIONS / IN INCHES ,- OF JEDEC REFERENCE LINE GAUGEG126 WITH- IN ZONE “A: WITHIN ZONE “ THE “X“ VALUE MAY NOT EXCEED THEVALU
40、E DETERMINED FROM THE GENERATINe EQUATION OF JSDEC REFERENCE LINE GAUGE GI26 (Y=O.58X t0.576). PER CI26 EIA 25b-A b5 3234600 00b3595 9 = RS-256-A Page 8 114-DEGREE DEFLECTING YOKE JEDEC No. 343 1. PURPOSE To establish a standard yoke for 114“ cathode-ray picture tubes that would define the limit for
41、 deflected beam clearance, and that would be used to measure such performance characteristics as pin cushion, deflection defocusing, and light output. 2. MECHAMCAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. Horizontal Coil
42、 Inductance. . 11 I 20% millihenries Vertical Coil Resistance . 45 t 20% ohms 3. ELECTRICAL 41. PERFORMANCE A standard yoke must have the same linearity, pin cushion, and focusing characteristics as the pri- mary standard yoke maintained by EIA. In addition to the above requirement, the yoke under t
43、est must have the same neck-shadow charac- teristics within f 1% as the primary standard yoke maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated at 5 pa b
44、eam current and 16 Itv anode voltage with the scanning axes of the yoke aligned with the corresponding axes of the screen. Beam-center- ing and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The diagonal of the raster shall be measured and shall be within f 1% of the dime
45、nsions obtained with the pri- mary standard yoke. 5.25 DIA. MAX. I b-4.25 DIA. -_ INSIDE CONTOUR CONFORMS TO INSIDE CONTOUR IN ZONE “4: WITHIN ZONE “E“ THE “X“ VALUE MAY NOT EXCEED THEVALUE DETERMINED FROM THE GENERATINQ EQUATION OF JGDEC REFERENCE OF JEDEC REFERENCE LINE GAUGE.0126 WITH- LINE GAUGE
46、 126 (Y =o.sex2+0.576). - - EIA 256-A 65 3234600 O063596 O 92-DEGREE DEFLECTING YOKE JEDEC No. 144 1. PURPOSE To establish a standard yoke for 92“ cathode-ray picture tubes which would be used to measure such performance characteristics as pin cushion, deflection defocusing, and light output, and wo
47、uld also define the limit for deflected beam clearance. 2. MECHAMCAL The dimensions of the yoke are specified on the accompanying diagram. The inside surface of the yoke shall be insulated. 3. ELECTRICAL Horizontal Coil Inductance. . Vertical Coil Resistance. . 11 2 20% millihenries 45 +- 20% ohms 4
48、. PERFORMANCE A standard yoke must have the same linearity, pin cushion, and focusing characteristics as the pri- mary standard yoke maintained by EIA. In addition to the above requirement, the yoke under test must have the same neck-shadow charac- teristics within f 1% as the primary standard yoke
49、maintained by EIA, when both are used on picture tubes that have been selected and set aside by JT-6. In comparing the yoke under test with the primary standard, the picture tube shall be operated at 5 pa beam current and 16 kv anode voltage with the scanning axes of the yoke aligned with the corresponding axes of the screen. Beam-center- ing and ion-trap adjustments shall be made so that the neck shadow is symmetrical. The focusing coil, if needed, shall be placed on the tube so that the center of its air gap is located 3.25“ behind the reference lin
