YOKOGAWA DL6000 Series User Manual

2-15
IM DLM6054-01EN
Features
3
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Index
App
2.5 Acquisition Conditions
        section 7.1 for the procedure
When the DL6000/DLM6000 stores the sampled data in the acquisition memory, it processes the data
using the selected method, and then the processed data can be used to display a waveform (does not
apply to logic signals). The three methods that can be selected are listed below.
Normal Mode
In this mode, sampled data is stored directly to the acquisition memory and no special data
processing takes place.
Envelope Mode
The DL6000/DLM6000 determines the maximum and minimum values among the data sampled at
2.5 GS/s (5 GS/s when Interleave mode is on)
1
at a time interval that is twice the sampling period (the
inverse of the sample rate) of Normal mode and displays the values as pairs when it displays the
waveform.
This mode is ef
fective when you want to avoid aliasing, because the sample rate is essentially kept
high regardless of the time axis setting. It is also effective when you want to detect glitches (narrow
pulse signals) or when you want to display the envelope of a modulated signal. This mode can be
used when the sample rate is 1.25 GS/s or less.
2
Envelope mode
Normal mode
1
This sample rate applies to the DL6054, DL6104, DLM6054, and DLM6104. On the DL6154, the
sample rate is 5 GS/s (10 GS/s when Interleave mode is on).
2
The sample rate at which the acquisition mode changes to Envelope mode varies depending on
whether high resolution mode is on or off.
DL6054, DL6104, DLM6054, and DLM6104 DL6154
High resolution
mode
Off 1.25 GS/s or less 2.5 GS/s or less
On 625 MS/s or less 1.25 GS/s or less
Average Mode
In Average mode, the DL6000/DLM6000 acquires waveforms multiple times, averages the same
time points relative to the trigger point, and displays averaged waveforms. Average mode is useful
when you want to remove random noise from waveforms.
The averaging method varies depending on the trigger mode.
• Auto,
Auto Level, or Normal mode: Exponential averaging
• Single mode (using the SINGLE key): Linear averaging
• N Single Mode: The DL6000/DLM6000 acquires the number o
f waveforms specified in the
MODE menu (N) and displays the linear average of the history waveforms (All
Half Tone).
An = {(N – 1)An – 1 + Xn}
1
N
Exponential Average
(When the trigger mode is set to Auto,
Auto Level, or Normal)
AN =
N
Simple Average
(Using the SINGLE key)
N
n = 1
Σ Xn
An
Xn
N
: n
th
averaged value
: n
th
measured value
: Attenuation constant
(2 to 1024 in 2
n
steps)
Xn
N
: n
th
measured value
: Number of times to average
(2 to 1024 in 2
n
steps)

YOKOGAWA DL6000 Series Specifications

General

Brand	YOKOGAWA
Model	DL6000 Series
Category	Test Equipment
Language	English