6-3
IM DLM3054-01EN
Attenuation Constant and Average Count (Avg Count)
Sets the attenuation constant for exponential averaging or the average count for linear averaging.
Selectable range: 2 to 1024
An:
Xn:
N:
nth averaged value
nth measured value
Attenuation constant
(2 to 1024 in 2
n
steps)
Xn:
N:
nth measured value
Number of times to average
(2 to 1024 in 2
n
steps)
Simple average
Exponential average
1
N
N
n=1
N
∑
Xn
An=
{(N – 1)An – 1 + Xn}
An=
Logic waveforms are not averaged.
Number of Waveform Acquisitions (ACQ Count)
When the acquisition mode is set to Normal (Normal) or Envelope (Envelope), you can set the number of
waveform acquisitions. If you select Infinite, the instrument continues waveform acquisition until you stop it
using the RUN/STOP key. The default setting is Infinite. You cannot change the number of acquisitions during
waveform acquisition. If you want to change it, stop acquisition first.
Selectable range: 1 to 65536, or Infinite
The number of waveforms that have been stored to the acquisition memory appears at the upper left of the
screen.
High Resolution Mode (Hi Resolution)
When High Resolution mode is turned on, the number of effective bits per data value is expanded by up to 12
bits through the digital and bandwidth filters (Band Width).
• ON: Enables High Resolution mode
• OFF: Disables High Resolution mode
• When High Resolution mode is turned on, the maximum sample rate of real-time sampling is set to 1.25
GS/s, half the ordinary value.
• High Resolution mode does not apply to logic waveforms.
6 Waveform Acquisition