1 Quick Start
40 Keysight 34420A Service Guide
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 39.
– 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.
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