1、I INCH-POUND I Parameter: Unit: Maxim um : Minimum: MIL-PRF-111329A Ef eb tk VSWR T(anode) Tuner torque V kv inch-ounce OC _ sec 5.5 5.0 _ 1.5 1 O0 60 - 31 - - 51 - 41 60 - 4,5 21 31 _ 16 July 1999 SUPERSEDING Parameter: Unit: Maxim um : Minimum: PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, MAGNET
2、RON, PULSE TYPE 7521 Ib ib Pi Pi Du tPC P 2.0 1 .O5 7.5 5.0 .O02 1.5 _ mA dc a W kw _ _ _ _ _ -0.5 MIL-E-111 329(SigC) 14 January 1960 DEPENDENT j/(b) See footnotes at the end of table I STORAGE, HANDLING, AND INSTALLATION: Cooling: Convection and conduction. Magnet isolation: - 61 Mounting support:
3、 See figure I. Mounting position: Any. Tuner drive mechanism - 1 31 Preparation for shipment: 31 Output coupling: UG-39lU: See figure I. Input connections: UG-290AU: See figure I. Vibration, shock: - 101 111 Weight: Approximately 1.5 pounds. GENERAL: Qualification - Required AMSC NIA 1 Of7 DISTRIBUT
4、ION STATEMENT A. Approved for public release; distribution is unlimited FSC 5960 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-111329A TABLE I. Testina and inspection Inspection 2ualification erformance viarking iolding period limensions vi
5、oisture-vaporproof barrier pack arton drop Jibration Jibration Shock test Tuner drive torque Tuner drive torque Mechanical fatigue ieater current 3scillation (1) Standing wave ratio Heater cathode warmup time Pulse characteristics Anode current Pulse voltage Power output RF bandwidth Reference numbe
6、r MI L-PRF-1) 3.2 3.6 3.7 4.5 4.9.2 4.9.7 4.9.1 8 4.9.19.1 4.9.1 9.2 _ _ _ 4.9.1 7 4.1 0.8 4.1 6.3 _ 4.1 6.3.2 4.1 6.3.3 4.1 6.3.4 4.1 6.3.5 _ 4.1 6.3.7 Conditions lot required 211 - 221 = 168 hours See figure 1 ackage group 9, container size A, drop test 1 Vo voltages o/ F = 25 Vo voltages 01 F = 5
7、5 S=15 111 T = 25OC (approximate) T = -55OC to +85OC 121 T = 25OC (Approximate) XI Ef = 5.0 V tk = 60 seconds (min) VSWR = 1 .I :I maximum except as otherwise noted. tk = 60 seconds max at Ef = 5.0 V Ef = 5.0 V for test 81 tpc = 0.2 f 0.02 ps; DU = .O01 trv = 0.09 to 0.1 1 ps 21 ZI ib = .90 a FI, F2
8、, F3 FI = 8,900 MHz F2 = 9,150 MHz F3 = 9,400 MHz VSWR = 1.5:1 Minimum power phase FI, F2, F3; Worst phase ib = .85 to 1 .O5 a VSWR = 1.5:l; ,ee footnotes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-111329A TABLE I. Testi
9、nci and inspection - Continued Inspection Pulling factor Pushing factor Tunable frequency Tunable frequency Stability test Temperature coefficient Low temperature operation High temperature operation Anode-cathode capacitance Shelf life stability Intermittent life test Life test end point: RF bandwi
10、dth Pulse voltage Power output Stability Reference number MIL-PRF-1) 4.1 6.5 4.1 6.6 4.1 0.7.3.2 4.1 0.7.3.2 _ 4.9.1 4 4.9.15.1 4.9.1 5.2 _ _ 4.1 1.5 4.1 1.4 Conditions -1, F2, F3 -1, F2, F3 171 - 1 31 1 41 JSGR = 1.5:l minimum -1, F2, F3 bodeT, 51 -1, F3 -3; -65OC ambient k = 60 seconds (max) 175OC
11、 ambient; -3 r = 25oc to I oooc; = 30 days; k = 60 maximum 3sc (1); F2, 3roup D BI JSWR = 1.5:l minimum :ycles through h G in about 30 mins. JSWR = 1.5:l 01 181 - 1 91 Symbol AF AF F F M.P. AFIC M.P. M.P. C M.P. t BW ePY Po M.P. Lir Min Max 20 3.5 9,400 9,400 0.25 .20 0.5 0.5 10 .5 _ 3.Oltpc 4.9 0.5
12、 _ Unit MHz MHz MHz MHz Yo MHzIOC Yo Yo PPF Yo cycles MHz kv W Yo - 11 For the assistance of designers of electronic equipment, the absolute ratings have been divided into two groups as follows: a. Independent. These ratings shall not be exceeded. They are limiting values beyond which the serviceabi
13、lity of any individual tubes may be impaired. b. Dependent. These ratings are interrelated, but it does not necessarily follow that combinations of limits can be attained simultaneously. - 21 The characteristics of the applied pulse must be those which result in proper starting and oscillation. The
14、rate of pulse voltage rise, the percentage of pulse voltage ripple, and the rate of pulse voltage fall are among the more important considerations. The pulse characteristics listed under Oscillation 1, (4.1 6.3.3), are those obtained with modulators used in manufacturing processes and are not necess
15、arily applicable with field type modulators. - 31 Frequency skipping or unstable operation may be encountered at some phase position when the mismatch occurs at the end of a “long“ line (two meters or longer.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
16、m IHS-,-,-TABLE I. Testinci and inspection - Continued Condition (1) (2) (3) - 4/ The maximum tuner torque specified cannot be exceeded without causing permanent damage to the tube. - 5/ The temperature shall be measured at the point indicated on figure I. Temperature coefficient measurements shall
17、be taken at 25 intervals across the indicated temperature range. The normal anode temperature during operation is 2OoC greater than ambient temperature. At no time shall frequency change more than the specified temperature coefficient limit. - 6/ In handling and mounting the magnetron, care must be
18、exercised to prevent demagnetization. Ferromagnetic materials or energized magnets shall not be brought within two inches of the tube. - 7/ The pulse characteristics of Oscillation (1) shall be as follows: No spike or ripple shall exceed f 7 percent of the average peak value of voltage or current. T
19、he current pulse fall time shall not exceed 0.2 ps (max) as measured between O and 85 percent levels. Pulse shall be applied directly to plates of oscilloscope. - 8/ See figure I. Heater-cathode power is applied to the BNC type connector as specified on the outline drawing. The center conductor is t
20、he cathode connector. - 9/ Reasonable care should be used in the storage, installation, and use of the tube to avoid imparting vibration or shock in excess of the values for which it is designed to withstand. - 1 O/ The tube shall be mounted on a test plate and vibrated along each of three (3) mutua
21、lly perpendicular axes at the specified frequency at .O8 inches (2.03 mm) total excursion for 60 seconds. The tube shall meet the requirements of Oscillation 1 after vi bration. - 1 I/ The magnetrons shall be mounted on a test plate and dropped 1 O times on each of three (3) mutually perpendicular a
22、xes parallel to the reference planes shown on figure I. The shock pulse shall have a duration of approximately 11 milliseconds as measured at the quarter amplitude points of the acceleration shock wave. The tube shall meet the requirements of oscillation 1 after this shock. - 12/ The tuner drive mec
23、hanism shall not be “set“ against either mechanical stop - 13/ The tube shall be capable of being mechanically tuned from 8,900 to 9,400 MHz by turning the tuner shaft 1.68 turns f 17 percent with the anode current held constant. - 14/ Stability shall be measured with the VSWR adjusted to that phase
24、 which produces maximum instability. The missing pulses (M.P.) shall be counted during the last three minutes of a test interval not to exceed six minutes, and shall not exceed the limit specified. A missing pulse is defined as one whose energy is less than 70 percent of a normal pulse, within f 1 p
25、ercent frequency range of the Duration - Ef - ib 5 minutes ov O 1 minute 5.0 V O 12 minutes 5.0 V .90 a - 1 5/ normal test frequency. Life test shall be conducted in accordance with the following operational cycle: The above cycle shall be repeated until the accrued time of condition (3) is 300 hour
26、s; the tube shall meet end of life requirements at that time. - 16/ A tuning cycle consists of two complete excursions each in opposite directions through the tuning range of the magnetron. The tube shall meet end of life requirements at completion of this test. - 17/ The anode current shall be vari
27、ed between .85 and 1 .O peak amperes at a rate sufficient to prevent thermal effects 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Testinci and inspection - Continued - 18/ This test shall be performed on four tubes per month when the tu
28、be is in continuous production, but shipments of that months production shall not be held pending completion of this test. So long as three of the four tubes for each of the first three months of a production run pass the test and 75 percent of the cumulative quantity of tubes tested pass the test,
29、tubes shall be considered to conform to this specification. If either of the conditions are not met, shipments shall be halted until three of four tubes of current production conform to the test. - 19/ The tube shall pass all applicable production tests at the end of the specified life, with the con
30、dition that the criteria for acceptance be modified in accordance with the life test end points listed. - 20/ Referenced documents shall be of the issue in effect on the date of invitation of bids. - 21 / The preproduction sample approval requirements in U. S. Army Electronics Command Drawing, SC-A-
31、46600B hereby replace any qualification requirements referable to the product covered herein. However, the requirements of 3.1.2.1, 3.1.2.2, 3.1.3, and 4.4 in Drawing SC-A-46600B shall be considered not applicable to the product covered herein. (Copies of U. S. Army Electronics Command Drawing SC-A-
32、46600B, 19 March 1965, “Preproduction Sample Approval in Lieu of Qualification Requirements in Specifications for Semiconductor Devices and Electron Tubes“ may be obtained from the acquiring activity or as directed by the contracting officer.) - 22/ Product-identification marking shall be in accorda
33、nce with MIL-PRF-I. If any document waiver has been granted, the product- identification marking shall consist of the tube-type designation only. - 23/ Tubes shall be prepared for domestic or overseas shipment, as specified in the contract or order, in accordance with MIL-PRF-75/1. (See B/) NOTICE:
34、When Government drawings, specifications, or other data are used for any purpose other than in connection with a definitely related Government acquisition operation, the United Stated Government may have formulated, furnished, or in any way supplied the said drawings, specifications, or other data i
35、s not to be regarded by implication or otherwise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patent invention that may in any way be related thereto. 5 Provided by IHSNot for ResaleNo reproduction or
36、 networking permitted without license from IHS-,-,-_t fi E SEE- NOTE 8 I -A- C Dimensions -m P- SEE NOTE 5 R- SEE NOTE 6 - U L: z U U U a l E a REFERENCE t PLANE B - SEE NOTE 7 J , _ _ I 61.11 _ I ,650 DIA I - I 16.51 DIA YI NOTES: I. Reference plane “A is defined as a plane along the face of the wa
37、ve guide flange. 2. Reference plane “B is defined as a plane perpendicular to plane “A passing through the center of the holes as shown 3. Reference plane “C is defined as a plane perpendicular to planes “A and “B“ passing through the center of the 4. AN-UG 290NU BNC panel jack. 5. Includes angular
38、as well as lateral deviation. 6. Parts on this centerline may vary from true location by .I 25 inch (3.1 7 mm). 7. To be coupled to an AN-UG-40NU standard choke flange coupling. 8. Measure anode temperature at this point. 9. Pitch diameter to accept #8-32NC 60 GA only minor diameter of thread .I 40
39、inch (3.56 mm) (max). holes as shown. FIGURE I. Outline drawinci of electron tube tvpe 7521. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Custodians: Army - CR Air Force - 11 DLA - CC Review activities: Army - MI Air Force - 99 Preparing activity: DLA - CC (Project 5960-3548) 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
