VT420 Liquid Display User Guide 4 150-0982. ABSOLUTE RATINGS OF ENVIRONMENTNote(1) Temperature and relative humidity range is shown in the figure below.(a) 90% RH Max. (Ta ≦ 40ºC)(b) Wet-bulb temperature should be 39ºC Max. (Ta > 40ºC)(c) No condensation.(2) The maximum operating temperature is based on the test condition that thesurface temperature of display area is less than or equal to 60ºC with LCDmodule alone in a temperature controlled chamber. Thermal managementshould be considered in final product design to prevent the surface tempera-ture of display area from being over 60ºC. The range of operating tempera-ture may degrade in case of improper thermal management in final productdesign.(3) 11 ms, half sine wave, 1 time for ±X, ±Y, ±Z.(4) 10~200 Hz, 10 min, 1 time each X, Y, Z.(5) At testing Vibration and Shock, the fixture in holding the module has to behard and rigid enough so that the module would not be twisted or bent bythe fixture.