1、 MIL-PRF-1/1718A w/AMENDMENT 1 16 April 2008 SUPERSEDING MIL-PRF-1/1718A 25 September 1998 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, GAS SWITCHING TYPE 8922 * This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. Requirements for acquiring the el
2、ectron tube described herein shall consist of this document and MIL-PRF-1. DESCRIPTION: Passive TR-limiter, crystal protector, igniter-less, 2,600 to 3,100 MHz. ABSOLUTE RATINGS: Incident Temperature Parameter: power Du tp Pressurization Operating Non-operating Altitude Unit: kw - s psia C C ft Maxi
3、mum: 50 0.03 36 40 +65 +75 30,000 Minimum: 0 - - - 0 -62 - PHYSICAL CHARACTERISTICS: Dimensions: See figure 1. Mounting: Input and output flanges mate with Mounting position: Any. M3922/61-1. Cooling: Convection. Flanges: See note 1 of figure 1. Finish: See note 2 of figure 1. TEST CONDITIONS: Param
4、eter: Incident power Du tp F Frequency Unit: kw - s MHz F MHz Tolerance: 10% min 0.10 3% 1 2,600 0.1%30 0.001 6.0 F3 2 2,900 0.1%3 3,000 0.1% 4 3,100 0.1%_ GENERAL: First article testing: Required. 1/ Service life guarantee: 2/ 3/ Shelf life: 3/ _ * Replaces type GIB 182858-1 and Varian VT-8-1003. A
5、MSC N/A FSC 5960 INCH-POUND Inactive for new design after 3 September 2003 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1718A w/AMENDMENT 1 2 TABLE I. Testing and inspection. Inspection MIL-STD-1311 Notes Conditions Symbol Limits Unit me
6、thod Min Max Conformance inspection, part 1 Low-level VSWR 4473 4/ - F = F2 through F4 - 1.35 - Insertion loss 4416 - F = F2 through F4 Li - 0.5 dB Flat-leakage power 4452 - pf - 60 mw Spike-leakage energy 4452 - Ws - 0.15 erg Recovery time 4471 - t - 20 s Firing power 4496 - Po/Du - 200 mw Temperat
7、ure cycling (non-operating) 1027 5/ One cycle - - - - Conformance inspection, part 2 Pressurizing 4003 5/ 8/ 40 psia; 1 cycle - - - - Dielectric material strain 4101 7/ - - - - Permanence of marking 1105 - - - - - Conformance inspection, part 3 Life test - 2/ 3/ Group S t 2,000 - hrs Life-test end p
8、oints: - Crystal degradation - 9/ 10/ NF - 2.0 dB Insertion loss 4416 - F = F2 through F4 Li - 0.5 dB Spike-leakage energy 4452 - Ws - 0.3 erg Recovery time 4471 - t - 30 s Firing power 4496 - Po/Du - 600 mw Noise ratio - 6/ Nr - 1.05 - See footnotes at end of table. Provided by IHSNot for ResaleNo
9、reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1718A w/AMENDMENT 1 3 TABLE I. Testing and inspection - Continued. Inspection MIL-STD- 1311 Notes Conditions Symbol Limits Unit method Min Max Conformance inspection, part 3 - Continued Periodic-check tests Pressurizing 4003
10、 5/ 8/ 40 psia; 10 cycles - - - - Shock, specified pulse 1042 11/ Test condition A - - - - Vibration, mechanical 1032 12/ - - - - Temperature cycling life test 1027 5/ 40 psia; 10 cycles - - - - Humidity - 13/ - - - - Performance degradation - 14/ - - - - 1/ First article testing requirements hereby
11、 replace any qualification requirements referable to the product covered herein. The term “First article testing” shall be considered as synonymous with the term “Preproduction sample approval testing.” All tests applicable herein (including all first article tests and conformance inspection, parts
12、1, 2, and 3) shall be performed during first article testing. A failure of any one tube in any of the tests shall be cause for decision of first article sample disapproval. The contractor/manufacturer shall provide test reports and written assurance that: a. The first article sample is representativ
13、e of the product to be submitted under the contract. b. First articles shall be manufactured from new materials and in the facility that produced the sample tubes. A test plan shall be submitted to the contracting officer for approval prior to proceeding with first article testing. The test plan sha
14、ll list all production test and laboratory test facilities to be utilized in first article testing and production phases of the contract. Upon receipt of approval of the test plan, first article testing may proceed. When testing has been completed, three copies of the test report shall be prepared i
15、n accordance with guidance from MIL-HDBK-831, certified by a Government representative and submitted with the test samples to the contracting officer for approval. 2/ Life tests shall not be required after the tubes under test (TUT) have satisfied all requirements of this document for first article
16、approval. However, a service-life guarantee of 2,000 hours minimum shall be required in accordance with the requirements of MIL-PRF-1. Life for purpose of the service-life guarantee shall be defined as the total rf operating time. The sum of the operating and shelf life shall be not less than 21 mon
17、ths. 3/ The tubes tested and acquired in accordance with this tube specification sheet shall be capable of shelf-life for a period of 18 months after date of shipment from the manufacturers plant. Tubes placed in operation during this shelf-life period shall meet all requirements of this tube specif
18、ication sheet. Tubes found to be defective within the shelf-life period shall be replaced by the manufacturer at no cost to the Government or its contractors. 4/ Unless otherwise specified, the acceptance level for all tests listed under conformance inspection, part 1, shall be 1.0 (see 15/). 5/ Aft
19、er the completion of this test, the TUT shall satisfy all requirements of MIL-STD-1311, method 4452 (spike-leakage energy), as specified in conformance inspection, part 1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1718A w/AMENDMENT 1
20、4 TABLE I. Testing and inspection - Continued. 6/ The noise ratio shall be defined as the ratio of the IF attenuation required to reduce the output noise level with the TUT installed to that value when the TUT is removed from the circuit. The noise ratio can be determined from the following equation
21、: Nranti F anti Y=+101 01 12log ( . ) log ( . )Where F = Receiver noise figure in dB. Y = IF attenuation required to reduce the output noise level with the TUT installed in the circuit to that with the TUT removed from the circuit. NOTE: The denominator in the second term is applicable only if no pr
22、e-selector is used. 7/ After the completion of this test, the TUT shall satisfy all requirements of MIL-STD-1311, method 4471 (recovery time), as specified in conformance inspection, part 1. 8/ The specified air pressure shall be applied to the input window of the TUT for a period of 30 minutes, aft
23、er which the pressure shall be reduced to atmospheric pressure. This test shall be performed by immersing the seal and tube flange in water. The maximum allowable leak rate shall be one bubble per 30 seconds. Bubbles due to occluded air shall be disregarded. This test shall be performed for the numb
24、er of cycles specified. 9/ The tube shall be terminated with a type 1N21E crystal mounted in a crystal holder and be provided with a dc ground return of 100 10 ohms. At the beginning of the life test, the crystal noise figure (NF) shall meet the minimum requirements for the type 1N21E crystal under
25、the standard specified conditions. The initial crystal noise figure shall be measured and recorded. The crystal noise figure shall be re-measured periodically during the course of life testing. Life test shall be considered completed when the 1N21E crystal noise figure degradation (NF) from the init
26、ial value has exceeded the specified limit. 10/ One crystal failure will be allowed during the life test. If a crystal failure occurs, a new crystal shall be inserted in the mount and the life test shall continue for a minimum of 200 hours, even if the life test is extended beyond the required 2,000
27、 hours. 11/ The TUT shall be shocked 5 times in the direction shown in figure 1 when actual mounting conditions are simulated. The TUT shall be capable of satisfying all requirements of this document without damage or failure before, during, and after being subjected to the specified shock test. 12/
28、 Vibration. The TUT shall be capable of satisfying all requirements of this document without damage or failure before, during, and after being subjected to the specified vibration test with the amplitude as specified herein. Frequency (Hz) Amplitude (Inches) 5 to 15 0.075 .012 (0.150 total displacem
29、ent) 16 to 25 0.050 .008 (0.100 total displacement) 26 to 33 0.025 .004 (0.050 total displacement) 13/ The TUT shall perform as specified herein without degradation of performances when its operating or non-operating humidity environment has a relative humidity up to 95 percent, including condensati
30、on at any temperature up to 50C (122F). 14/ The TUT shall not exhibit damage or degradation of performance resulting from spurious signals within F1 through F2 and with incident power = 5 kw maximum. 15/ This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table
31、 III. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1718A w/AMENDMENT 1 5 FIGURE 1. Outline drawing of electron tube type 8922.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/171
32、8A w/AMENDMENT 1 6 Dimensions Ltr Inches Millimeters Min Max Min Max First article sample inspection A 22 23 E .235 .265 5.97 6.73 F - 4.000 - 101.60 Conformance inspection, part 1 C .256 .261 6.50 6.63 D 3.469 3.531 88.11 89.69 Conformance inspection, part 2 B 5.297 5.327 134.54 135.31 G 4.745 4.75
33、5 120.52 120.78 NOTES: 1. The waveguide flanges of the TR tube shall be cold rolled steel. The output flange of the limiter may be aluminum. 2. All external and interface surfaces of the TR tube, with the exception of the aluminum parts, shall be corrosion protected using cadmium plate in accordance
34、 with Federal Specification SAE-AMS-QQ-P-416, type II, class 1, or equivalent. Aluminum parts shall have a chemical film finish in accordance with MIL-DTL-5541 or equivalent. All external surfaces with the exception of the mating surfaces of the waveguide flanges shall be wash primed in accordance w
35、ith MIL-C-8507 one coat .0002 inch (0.005 mm) to .0005 inch (0.013 mm) thick with primer in accordance with DOD-P-15328 or equivalent. Paint two coats .001 inch (0.03 mm) thick with gray enamel in accordance with MIL-DTL-15090, type II, class 2 ,or equivalent. Nickel plating the TR in accordance wit
36、h SAE-AMS-QQ-N-290 is an acceptable alternative. 3. The rf input and output shall be marked as indicated. 4. The rf input and output flanges shall mate with M3922/61-1. FIGURE 1. Outline drawing of electron tube type 8922 - Continued. Referenced Documents. In addition to MIL-PRF-1, this specificatio
37、n sheet references the following documents: MIL-DTL-5541, MIL-C-8507, MIL-DTL-15090, DOD-P-15328, MIL-HDBK-831, MIL-STD-1311, and SAE-AMS-QQ-P-416. Amendment notations. The margins of this specification sheet are marked with vertical lines to indicate modifications generated by this amendment. This
38、was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations. Custodian: Preparing acti
39、vity: Army - CR DLA - CC Navy - EC Air Force - 11 (Project 5960-2008-053) DLA - CC Review activities: Army - AR, MI Navy - AS, CG, MC, OS Air Force - 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
