[. . . ] Maintenance: make sure that the mounting of the extractable modules and the relevant connections are correctly carried out in order to avoid any malfunctioning or damage to the instrument. [. . . ] : alarm type selection: = disabled, = up alarm, = down alarm with = down alarm, disabling at power on, = up alarm with latch, = down alarm with latch. = selection of display colour for alarm, the basic colour of the display is modified according to the alarm (only UDM40): = red, = orange, = green, = the basic colour of the display is not modified when an alarm occurs. DISPLAY: display: flashing indicates that the limit of the displayed range is exceeded with data update up to 20% of its nominal input range; "Err": indicates that the frequency of the signal exceeds the maximum value (50kHz) or exceeds by 20% the values set in the electric scale (Lo. FUNCTIONS: "EEE" or "Err" is displayed when at least one of the inputs A or B or the result of the function is in a "EEE" or "Err" condition. Modules: some specific menus are displayed only if the modules to which they belong are installed. min-MAx: the reset of min and max values is carried out without confirmation prompt. [. . . ] Ambient conditions: only internal use, height up to Protection degree, front: IP67, NEMA4 AC/DC power 2000m. [. . . ]