Figure 11: Digital Filter Aberrations - Tektronix IsoVu TIVM Series User Manual

Operating information
16
Another source of aberrations is introduced when the signal is below the cutoff
frequency of the digital filter (5.0 Hz). The following figure shows a close-up
view of the front edge of a 0.1 Hz 800 mV
also created by the digital filter.
Figure 11: Digital filter aberrations (about 2.5% of V
The following figure shows the aberrations after the offset correction has been
disabled. When the offset correction is disabled, the system no longer corrects for
long-term drift due to temperature change and fiber movement.
square wave. These aberrations are
p-p
)
p-p
TIVM Series Measurement System User Manual