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Chapter 4 115
Making Measurements
Making the Waveform (Time Domain) Measurement
❏ Auto - The data packing value most appropriate for current
instrument settings is selected automatically.
❏
Short (16 bit) - Select this to pack data every 16 bits.
❏
Medium (24 bit) - Select this to pack data every 24 bits.
❏
Long (32 bit) - Select this to pack data every 32 bits.
—
ADC Dither - Allows you to toggle the ADC dither function between
On and Off. The default setting is Off. If set to On, the ADC dither
refers to the introduction of noise to the digitized steps of the
analog-to-digital converter, and results in better amplitude
linearity and resolution in low level signals. However, it also
results in reduced dynamic range by approximately 3 dB.
—
Decimation - Allows you to toggle the decimation function between
On and Off, and to set the decimation value. Decimation allows
longer acquisition times for a given bandwidth by eliminating
data points. Long time captures can be limited by the instrument
data acquisition memory. Decimation numbers 1 to 4 describe the
factor by which the number of points are reduced. The default
setting is 1, which results in no data point reduction.