1、o _- EIA 235-C 67 M 3234600 0063488 B M / II . - -*. - ? - II -*- c-9 NOVEMBER, 1967 EIA STANDARD on COLOR CODES FOR MICROWAVE DEVICES WITH WIRE LEADS i ncl u d i ng TRAVELING WAVE TUBES KLYSTRONS CROSSED FIELD DEVICES Electromagnet Leads ELECTRONIC INDUSTRIES ASSOCIATION (Revision of RS-235-B) STAN
2、DARD RS-235-C Formulated by JEDEC Elecfron Tube Council II . II I EIA 235-C 67 3234600 O063489 T ? I NOTICE These standards, adopted and issued by the Electronic Industries Association were formulated by the Electron Tube Council of the Joint Electron Device Engineering Councils, EIA engineering sta
3、ndards are designed to serve the public interest through eliminating mis- understandings between manufacturers and purchasers, facilitating interchangeability and improve- ment of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particula
4、r need. Existence of such standards shall not in any respect preclude any member or non-member of EIA from manufacturing or selling products not conforming to such standards. Recommended standards adopted by EIA are without any regard to whether or not their adop tion may in any way involve patents
5、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 parties adopting the recommended standards. Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Eye Street, N. W., Washing
6、ton, D. C. 20006 0 Electronic Industries Association 1967 AU rights reserved Price $.60 Printed in 1J.S.A. EIA 235-C b? 3234600 0063490 b 5 RS-2354 Page 1 COLOR CODES FOR MICROWAVE DEVICES WITH WIRE LEADS (From EIA Standard RS-235-B and Standards Proposal No. 949 formulated under the cognizance of J
7、EDEC Committee JT-13 on Microwave Devices.) SCOPE The following codes are recommended as standards to be employed with traveling wave tubes, klystron tubes or crossed field devices. that are equipped with flying leads. It is intended that the in- sulation of the leads be colored and that these leads
8、 be an integral part of the tubes as supplied by the manufacturer. Spaghetti or other nonpermanent means of identifying lead colors should not be used. Inasmuch as a color code is valuable only if the colors are easily identifiable, it is suggested that EIA Standard GEN-101-A Color Coding for Numeri
9、cal Values be employed with the color limits as established by Supplement 1 to EIA GEN-101-A, Standard Color Chips. COLOR CODE FOR TRAVELING WAVE TUBE WIRED LEADS Tracer Color TWT Element -_ Body Color Black Brown Yellow Red Orange Orange Orange Orange Green Blue Grey White Green Blue Grey White Non
10、e None None None None Green Blue Grey None None None None Black Black Black Black Grounds, grounded elements Heaters or filament off ground Cathode, also heater-cathode lead if common Collector Helix 1 Helix 2 Helix 3 Helix 4 Grid 1 Grid 2 Grid 3 Grid 4 Grid 5 Grid 6 Grid 7 Grid 8 Since different gr
11、ids and possible combination of grids may be employed to control current no attempt is made to separate the “anode” or “control grid” from the others. The grids and helices are numbered 1, 2, 3, . . . , according to their relative position from the cathode, the lowest number being closest to the cat
12、hode. Numbers for grids or helices not available externally are omitted. Where two helices are equidistant from the cathode, the lower voltage helix will be assigned the lower number. _. EIA 235-C b7 m 3234600 00b349L m RS-2354 Page 2 COLOR CODE FOR KLYSTRON WIRED LEADS Body Color Tracer Tube Elemen
13、t Black Brown Yellow Red Orange Orange Orange Orange Orange Orange Green3 Blue Grey White Green Blue Grey White None None None None None Green Blue Grey Black White None None None None Black Black Black Black Body, or other grounded elements Heater Cathode, also heater-cathode lead if common Collect
14、or (if isolated) Reflector, phase modulation element or electrostatic focusing element #i ” #2 ” #3 ” #4 ” #5 99 $9 99 39 95 3, 3, 9, 99 3, ” #6 Grid 1 Grid 2 Grid 3 Grid 4 Grid 5 Grid 6 Grid 7 Grid 8 For thosc tubes with internally connected heater-cathode elements, but with individual external lea
15、ds, the body color will identify the major element, with tracer identification of the internally connected element. For example heater, internally connected to the cathode, brown with yellow tracer, etc. Sincc various elements may be used principally for modulation purposes or for beam focusing, as
16、differentiated from those employed principally for beam current control, the orange body is used to identify those elements which fali into this general class. Elements ;ire numbered according to their relative position from the cathode, the lowest number being closest to the cathode. Where two ele-
17、 ments are equidistant from the cathode, the lower voltage element will be assigned the lower number. As different elements and/or combinations of elements may be used for control of beam current, beam noise, etc, no attempt is made to separate “anode”, “Control grid”, “Modulating anode”, etc, from
18、other such elements. Each is to be numbered according to relative position from the cathode, the lowest number being closest to the cathode. Where two elements are equidistant from the cathode, the lower voltage clement will be assigned the lower number. 3 COLOR CODE FOR CROSSED FIELD DEVICES Color
19、Black Brown Yellow Red Orange Green Blue White Grey Magnetron VTM * B WO4M-type) * Body or other grounded elements Heaters or filament off ground Cathode, or common heater-cathode Anode Anode Delay Line - - Sole - Injector Grid - - Accelerator - Cold cathode - Turn-off electrode (crossed field ampli
20、fiers) VTM = voltage tunable magnetron BWO = backward wave oscillator _- .-_ EIA 235-C 67 3234600 0063V92 T RS-235-C Page 3 COLOR CODE FOR ELECTROMAGNET LEADS When an electromagnet is supplied as an integral part of a microwave tube package: Tracer Element Body Color Black Orange Electromagnet Red Orange Electromagnet White Orange Electromagnet etc. Orange Electromagnet
