Downloaded from https://www.everyspec.com MIL-STD-1311D INDEX Method No. Title 1002 ........................................................................ Barometric pressure, reduced 1006 ........................................................................ Salt spray (corrosion) 1011 ........................................................................ Humidity 1016 ........................................................................ Moisture resistance 1026 ........................................................................ Temperature range, operating 1027 ........................................................................
Temperature cycling, nonoperating 1031 ........................................................................ Vibration 1032 ........................................................................ Vibration, mechanical 1036 ........................................................................ Bump (obsolescent) 1041 ........................................................................ Shock 1042 ........................................................................ Shock, specified pulse 1046 ........................................................................ Neutron irradiation 1047 ........................................................................
High- and low-temperature performance (operating) 1101 ........................................................................ Secureness of base, cap, or insert 1105 ........................................................................ Permanence of marking 1111 ........................................................................ Base pin solder depth 1116 ........................................................................ Lead fatigue (subminiature tube) 1119 ........................................................................ Glass-to-lead seal strain (subminiature flat-press base) 1121 ........................................................................
Base strain (miniature tube) 1126 ........................................................................ Glass envelope strain 1131 ........................................................................ Metallic base sleeve quality (acid etching test) 1136 ........................................................................ Rough-handling test end points 1141 ........................................................................ Pressure (implosion) 1143 ........................................................................ Forced cooling 1155 ........................................................................
Coolant-pressure drop versus coolant flow (forced-air or fluid-cooled types) 1201 ........................................................................ Short and discontinuity detection 1202 ........................................................................ Filament burnout 1206 ........................................................................ Particles indicator 1211 ........................................................................ Insulation of electrodes 1216 ........................................................................ Base material insulating quality 1226 ........................................................................
Envelope temperature 1227 ........................................................................ Temperature/Cooling (forced-air or fluid-cooled types) 1231 ........................................................................ Emission current 1236 ........................................................................ Power oscillation and internal insulation 1237 ........................................................................ Oscillation test for converter tubes 1239 ........................................................................ Noise and microphonics, peak or integrated 1246 ........................................................................
Audio frequency noise 1251 ........................................................................ Audio frequency noise and microphonics 1256 ........................................................................ Electrode current 1261 ........................................................................ Electrode voltage 1266 ........................................................................ Grid currents 1267 ........................................................................ Air leaks 1296 ........................................................................ Pulse characteristics 1301 ........................................................................
Heater or filament current 1306 ........................................................................ Transconductance 1311 ........................................................................ Anode resistance 1316 ........................................................................ Amplification factor 1321 ........................................................................ AC amplification 1326 ........................................................................ Conversion transconductance 1331 ........................................................................
Direct-interelectrode capacitance 1336 ........................................................................ Heater-cathode leakage 1341 ........................................................................ Power output 1353 ........................................................................ Operation of rectifiers 1356 ........................................................................ Grid-pulse operation 1366 ........................................................................ Interelement leakage resistance, cold 1367 ........................................................................
Magnet polarity and strength 1369 ........................................................................ Heater or filament warm-up time 1372 ........................................................................ Current division 23