Null (Relative)(continued)• The null value is stored in the multimeter’s Null Register. There aretwo ways you can specify the null value. First, you can enter aspecific number into the register from the front-panel menu or fromthe remote interface. Any previously stored value is replaced with thenew value. If you are operating the multimeter from the front panel,entering a null value also turns on the null function.The second way to enter the null value is to let the multimeter storethe first reading in the register. After you enable null, the firstreading displayed will be zero (if you have not changed the valuestored in the register). If you entered a number into the register, asdescribed in the paragraph above, the first reading does not overwritethe stored value.• Front-Panel Operation: After enabling null, you can edit the storednull value by pressing Shift > (Menu Recall). Any previouslystored value is replaced with the new value. Turning on the menudoes not disable the null operation; the multimeter will resumetaking measurements when you turn off the menu.2: NULL VALUE (MATH MENU)See also “To Make Null (Relative) Measurements,” on page 38.• Remote Interface Operation: You can use the following commands tomake null measurements. Math must be enabled before you can storea value in the Null Register.CALCulate:FUNCtion NULLCALCulate:STATe {OFF|ON}CALCulate:NULL:OFFSet {<value>|MINimum|MAXimum}The following program segment shows the proper order that youshould execute the commands to enable null and set an offset value.CALC:FUNC NULLCALC:STAT ONCALC:NULL:OFFS -2.0Chapter 3 Features and FunctionsMath Operations66
