Front-Panel Operation 2
Keysight 34420A User’s Guide 55
To Set the Integration Time
Integration time is specified in Number of Power Line Cycles (NPLC). You can set 
the NPLC to 0.02, 0.2, 1, 2, 10, 20, 100, or 200.
– You can set the integration time to one of three fixed values by choosing the 
number of digits displayed, see page 54.
– You can set the integration time in the MEASure menu using the INTEGRATE 
command.
– The Integration Time is directly related to the maximum number of digits the 
meter will display.
– You can always show fewer digits than the maximum allowed (the minimum 
number of digits shown is 4½).
NPLC
Filter Off 
Max Digits Shown
Filter On 
Max Digits Shown
0.02 4½ 5½
0.2 5½ 6½
16½ 7½
26½ 7½
10 6½ 7½
20 7½ 7½
100 7½ 7½
200 7½ 7½
Integration Time is local to the selected function. This means that you can select 
the integration time for each function independently. The meter remembers 
integration time when you switch between functions.