8163A/B, 8164A/B, 8166A/B User’s Guide 321Installation and Maintenance 11Operating and Storage EnvironmentThe following summarizes the operating environment ranges. In order forthe 8163A/B Lightwave Multimeter System, 8164A/B LightwaveMeasurement System, and the 8166A/B Lightwave Multichannel Systemto meet specifications, the operating environment must be within theselimits.TemperatureThe instrument should be protected from temperature extremes andchanges in temperature that may cause condensation within it.The storage and operating temperature for the Lightwave MeasurementSystem are given in the table below.Table 20 Specified Temperature RangesHumidityThe operating humidity for the 8164A/B Lightwave Measurement Systemis < 80% from 10°C to +35°C.The operating humidity for the 8163A/B Lightwave Multimeter System andthe 8166A/B Lightwave Multichannel System is up to 95% from 0°C to45°C.WARNING The 8163A/B Lightwave Multimeter System, 8164A/B LightwaveMeasurement System, and the 8166A/B Lightwave Multichannel Systemare not designed for outdoor use. To prevent potential fire or shockhazard, do not expose the instrument to rain or other excessive moisture.Mainframe Operating Range Storage Range8163A/B 0° C to +45° C -40°C to +70°C8164A/B +10° C to +35° C -40°C to +70°C8166A/B 0° C to +45° C -40°C to +70°C
