Averaging To Improve Accuracy - IET Labs, Inc. RLC Digibridge 1693 User And Service Manual

1693 RLC Digibridge

3.6.3 Averaging to Improve Accuracy

The accuracy of measuring each DUT can be en-
hanced automatically by the Digibridge if you pro-
gram it to make several measurements and average
them before reporting the final result (See Figure
3-31). Thus, errors due to electrical noise and other
effects that are just as likely to make the measurement
too high as too low are largely canceled. (This is true
regardless of the display selection, VALUE, BIN NO.,
etc.) Of course, the time required to complete a mea-
surement with averaging set to 10 (for example) is 10
times as long as the time for a single measurement.
Averaging can be set to any integer up to 255. To select
8 for example, select ENTER with the [FUNCTION]
key, then press [8][=][SHIFT][AVERAGE]
Figure 3-31: Approximate RLC Accuracy vs Test Frequency
54
Similarly, to inhibit averaging, select ENTER func-
tion and press [1][=][SHIFT][AVERAGE]. This is
the default situation (no averaging).
Displays of averaged measurements depend on the
measure mode.
If the measure mode is TRIGGERED, the display is
repeatedly updated to be the running average, until
the programmed number of measurements have been
made; then the final average remains displayed until
the next START command.
If the measure mode is CONTINUOUS, averaging
proceeds without any change of display until the pro-
grammed number of measurements have been made;
then the final average is displayed and remains until
replaced by another final average.
Operation