DLA MIL-PRF-1 1572 B-2008 ELECTRON TUBE VIDICON TYPE 7290.pdf
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1、AMSC N/A FSC 5960 MIL-PRF-1/1572B 18 December 2008 SUPERSEDING MIL-E-1/1572A 13 September 1972 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, VIDICON TYPE 7290 The requirements for acquiring the electron tube described herein shall consist of this document and MIL-PRF-1. This specification is approv
2、ed for use by all Depart- ments and Agencies of the Department of Defense. DESCRIPTION: One-inch, for slow scan or delayed readout, magnetic focus and deflection. PIN CONNECTIONS AND DIMENSIONS: See figure 1. ABSOLUTE RATINGS: Parameter: (See note 1) Ef Esj Ec1 Ec2 Ec3 Unit: V V dc V dc V dc V dc Ma
3、ximum: 6.9 25 125 750 1,000 Minimum: 5.7 - 0 - - TEST CONDITIONS: 6.3 15 Adjust (see note 2)300 Adjust (See note 3) ABSOLUTE RATINGS: Parameter: (See note 1) Ehk FI T(Faceplate) tk I (Focus coil) Unit: V dc fc C sec mA dc Maximum: 10,-125 1,000 45 - - Minimum: - - 10 - -TEST CONDITIONS: - - 30 300 4
4、0 TEST PATTERN: See note 4. TEST RASTER: See note 5. TEST COMPONENTS: See note 6. GENERAL: Qualification Not Required. Holding period (t = 336 hours). INCH-POUND Inactive for new design after 5 December 1997 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
5、S-,-,-MIL-PRF-1/1572B 2 TABLE I. Testing and conditions. Limits MIL-STD- 1311 method Requirement or test Conditions Acceptancelevel SymbolMin Max Unit 1331 First article inspection Direct-interelectrode capacitance Target to all - C 3.5 5.5 pF - - - - - - - - - - - - - - Conformance inspection, part
6、 1 Alignment horizontal Alignment vertical Cutoff Center resolution (1) Center resolution (2) Corner resolution Spurious signal Signal electrode voltage Maximum dark current Sensitivity (1) Sensitivity (2) Raster burn Maximum grid 2 current Residual signal See notes 7, 8, and 9 See notes 7, 8, and 9
7、 FI = 0.6 fc See notes 7, 8, and 13 FI = 0.6 fc See notes 4, 7, 8, and 10 See notes 4, 8, 16, 20, and 21 FI = 0.6 fc See notes 4, 7, 8, and 11 FI = 0.6 fc See notes 7, 9, 12, and 23 See notes 7, 8, 14, and 23 FI = 0 fc; Esi = 25 V See notes 7, 8, and 23 FI = 0.6 fc See notes 7, 8, 15, and 23 See not
8、es 7, 8, 16, and 21 Esj = 25 V; FI = 0 fc See notes 7, 8, 17, and 23 Esj = open, Ec1 = 0 V dc 0 V dc; Ec3 = 250 V dc See note 23 See note 19 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 - - Ec1 - - - - Esj DIsj Isj Isj - Ic2 Lag -30 -30 -45 600 600 350 - - - .04 .0005 - 1000
9、 - +30 +30 -100 - - - - 25 .0005 .08 .001 - - 20 mA dc mA dc V dc Lines Lines Lines - V dc A dc A dc A dc - A dc % See notes at end of table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1572B 3 TABLE I. Testing and conditions - Contin
10、ued. Limits MIL-STD- 1311 method Requirement or test Conditions Acceptancelevel Symbol Min Max Unit 1301 1105 - - 1136 Conformance inspection, part 2 Heater current Permanence of marking Life-test provisions Life-test end point: Maximum grid 2 current Container drop (periodic check) Group D See note
11、 18 t = 500 hours See note 22 6.5 - - - - If - - Ic2 - 540 - - 900 - 660 - - - - mA - - A dc - NOTES: 1. The symbols used in this specification, in addition to those in MIL-PRF-1, are defined as follows: Lag = Percentage of initial value of signal-output current remaining after a specified time peri
12、od following removal of illumination. Esj = Target voltage Isk = Signal-output current DIsj = dark current FI = Faceplate illumination T(Faceplate) = Temperature of faceplate I(Focus coil) = Focus coil current IsjT = Target current 2. Ec1 shall be adjusted until the beam current is just sufficient t
13、o discharge the photo-layer as observed by presence of detail in the highlights of the monitor. 3. Grids 3 and 4 are connected together internally. The voltage applied to these two elements shall be referred to as Ec3. Ec3 voltages apply with the use of Cleveland Electronics No. VF-115-4A focusing c
14、oil and Cleveland Electronics yoke MVVL 155-1, or equivalent, producing a field strength of approximately 40 gausses. Ec3 and optical focus shall alternately be adjusted to obtain best focus (sharpest lines). 4. EIA resolution chart, 1956, or equivalent, shall be placed on a transparent slide and sh
15、all be illuminated from the rear of the slide. 5. Standard EIA (RETMA) television scan shall be employed. The scan size shall be .500 x .375 inch. 6. Test components: (a) Deflection yoke: MVVL 155-1 Cleveland Electronics, or equivalent. (b) Focusing coil: VF-115-4A Cleveland Electronics, or equivale
16、nt. (c) Alignment coil: VA-132 Cleveland Electronics, or equivalent. (d) The above components are mounted as shown in figure 2. 7. The tube shall be tested in camera with associated monitors as shown in the block diagram of figure 3. 8. The alignment coil currents of each horizontal and vertical coi
17、l shall be adjusted until the center of the test pattern remains stationary as Ec3 is varied in and out of focus. The alignment coil currents shall be within the specified limits. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1572B 4 TABL
18、E I. Testing and conditions - Continued. 9. The following “back illuminated” test pattern shall be used when performing this test: 10. With Ec3 adjusted for balanced horizontal and vertical resolution, the resolution in the center of the pattern shall exceed the specified limit at 30 frames per seco
19、nd scan rate. 11. With Ec3 adjusted for balanced horizontal and vertical resolution, the resolution in the 4 corners of the pattern shall exceed the specified limit at 30 frames per second scan rate. 12. Using the spurious signal chart as described in note 9, consider the inner circle area as zone 1
20、 and the area within the rectangle excluding the inner circle as zone 2. The maximum size of any blemish, spot, or smudge and maximum allowable in any zone are as follows: Method I Method II Number allowed Measurement in inches using a monitor with 10 x 7 1/2-inch raster Number of raster lines Zone
21、1 Zone 2 Over .0312 Over 2 None None .0312 to .0156 2 to 1 1 3 Under .0156 1 See note A See note A NOTE A: Do not count spots .0156 and under unless concentration causes a smudge. 13. With test conditions as indicated, remove blanking voltage from grid 1 and adjust Ec1 until test pattern just disapp
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