YOKOGAWA ScopeCorder DL850E User Manual

5-3
IM DL850E-01EN
Averaging Mode (Average)
The DL850E/DL850EV acquires waveforms multiple times, averages the same time points relative to the trigger
point, saves them in the acquisition memory, and uses them to display averaged waveforms. Averaging mode is
useful when you want to remove random noise from waveforms.
The averaging method varies depending on the acquisition count.
An = {(N – 1)An – 1 + Xn}
1
N
An:
Xn:
N:
n
th
averaged value
n
th
measured value
Attenuation constant
(2 to 256 in 2
n
steps)
A
N =
N
N
n = 1
Σ Xn
Xn:
N:
n
th
measured value
Average count = acquisition count
When Acquisition Count Is
Set to Infinity
Exponential average
When Acquisition Count Is
Set to a Value between 2
and 65536 (in 2
n
steps)
Linear average
• When waveforms are acquired in averaging mode, they are saved to the acquisition memory as a single
record. This means that the history feature cannot be used.
• You cannot select averaging mode when:
- The display is in roll mode.
- The trigger mode is Single, N Single, or On Start.
- The dual capture feature is being used.
- Data is being recorded to a hard disk.
•
To average waveforms that have been acquired in N Single mode, set the acquisition mode to Normal, and
set the history feature’s display mode to Averaging.
• Logic, CAN monitor module, and LIN monitor module waveforms cannot be averaged.
Acquisition Count (Acquisition Count)
The ranges within which you can set the waveform acquisition count are indicated below. If you select Infinite,
the DL850E/DL850EV continues waveform acquisition until you stop it using the START/STOP key. The default
setting is Infinite. Changes to the number of acquisitions are not applied during waveform acquisition. They are
applied after acquisition stops.
•
When the acquisition mode is set to Normal, Envelope, or BoxAverage
1 to 65536 (in steps of 1) or Infinite
• When the acquisition mode is set to Average.
2 to 65536 (in 2
n
steps) or Infinite
• The number of waveforms that have been stored to the acquisition memory appears in the lower left of the
screen.
• If the
trigger mode is set to Single or On Start, you can set the acquisition count only when the action mode
is on.
• When the destination that data is saved to when an action is performed is set to OFF , the
maximum value that the acquisition count can be set to is 1000.
5 Waveform Acquisition

YOKOGAWA ScopeCorder DL850E Specifications

General

Brand	YOKOGAWA
Model	ScopeCorder DL850E
Category	Laboratory Equipment
Language	English