AThe answer is simple: absolutely nothing!-leave all the decimal-point control pins open (i.e., not connected to anything). If not specifically enabled by the user, all decimal points on DMS Series panel meters are OFF. Decimal points are ON only when the desired decimal-point input pin is externally connected by the user to the meter's power return (pin 3). However, unless otherwise indicated on the meter's individual data sheet, unused decimal point inputs can be connected to the meter's positive power supply input (pin 1). See the applicable product data sheet and DMS Application Note 13 ("Decimal Point Drivers") for more information.