MIL-PRF-1/689G
TABLE 1. Testing and inspection -Continued.
Requirement or test
Method
Type
Conditions
Symbol
Limits
Limits
Units
MIL-STD-1311
Min
Max
Conformance inspection,
part 3
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All
Group C; Eb2 =
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---
---
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Life-test provisions
2,850 V dc; Eb3 =
6,600 V dc; t = 500 hours
P1
Light = 15 fL
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---
---
Ib3 = 30 µA dc
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P2, P7,
P14
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---
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P1
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Life-test end points
Light = 11 fL
width
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0.75
mm
Line width A
width
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0.85
mm
Line width B
ĆEc
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45
V dc
Modulation
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---
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Heater-cathode
leakage current
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---
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Grid No. 1 leakage
current
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---
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Grid No. 2 leakage
current
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---
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Stray light emission
Ib3 = 37.5 µA dc
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P2, P7,
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0.8
mm
P14
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width
Line width A
0.9
mm
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width
Line width B
ĆEc
55
V dc
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Modulation
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---
---
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Heater-cathode
leakage current
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Grid No. 1 leakage
current
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---
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Grid No. 2 leakage
current
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Stray light emission
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NOTES:
1. This test to be performed at the conclusion of the holding period.
2. The scan from the tube face center to the extinction points of focused raster shall be ± 2.125 inches (53.98 mm).
3. Measure line width B at a distance from the center of the screen equal to 33 percent of the maximum bulb diameter. The
applied astigmatism voltage shall be equal to zero volt.
4. With a raster pattern the size of which is adjusted so that the widest points of the pattern just touch the sides of a square
3.075 inches (78.11 mm) on a side, no point on these pattern sides will lie within a square 2.925 inches (74.30 mm) on
a side, and having the same center as the first square.
5
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