6-10
IM DLM5058-03EN
Item
Specifications
Roll mode
The instrument switches to roll mode display when the trigger mode is set to Auto, Auto Level, or
Single for the following time scale ranges. For details on the trigger modes, see “Trigger modes” in
section 6.2, “Triggering Section.”
2.5 M points or less 100 ms/div to 500 s/div
5 M points
200 ms/div to 500 s/div
12.5 M points
500 ms/div to 500 s/div
25 M points
1 s/div to 500 s/div
50 M points
2 s/div to 500 s/div
125 M points
5 s/div to 500 s/div
250 M points
10 s/div to 500 s/div
500 M points
20 s/div to 500 s/div
Waveform Acquisition and Display
Item
Specifications
Acquisition modes
Normal, Envelope, and Averaging are available.
Normal:
Normal sampling without special processing.
Envelope:
From the data sampled at the maximum real-time sample rate, the instrument
acquires the maximum and minimum values for each memory acquisition
interval.
Average:
Averages normally sampled data over multiple acquisitions. Exponential
averaging is performed when the trigger mode is set to Auto, Auto Level, or
Normal, and linear averaging is performed when the trigger mode is set to
Single. The trigger mode is handled as Normal when N Single is specified. The
attenuation constant for exponential averaging and the linear average count can
be set to a value from 2 to 1024 in 2
n
steps. Averaging cannot be used on logic
waveforms. For details on the trigger modes, see “Trigger modes” in section 6.2,
“Triggering Section.”
Sampling mode
Select from three sampling modes: real-time, repetitive, and interpolation. When you use a short
time scale that would cause the sample rate to exceed the real-time sampling maximum sample
rate with the specified record length kept constant, the instrument operates as follows:
For the maximum sample rates, see “Maximum sample rate” in section 6.1, “Signal Input Section.”
RealTime:
Achieves the required time scale by reducing the display record length.
Interpolation:
Performs interpolation sampling. If you decrease the time scale further and the
upper limit of the interpolation sampling rate is exceeded, the instrument reduces
the display record length to achieve the required time scale.
Repetitive:
Performs repetitive sampling. If you decrease the time scale further and the
upper limit of the repetitive sampling rate is exceeded, the instrument reduces
the display record length to achieve the required time scale.
High resolution mode
Improves the analog waveform S/N ratio by combining the high resolution mode and the digital
filter.
Improves the vertical resolution up to 12 bits.
Record length
Standard model: 1.25k Points, 12.5k Points, 125k Points, 1.25M Points, 2.5M Points, 5M Points,
12.5M Points, 25M Points (single only), 50M Points (single only), 125M Points
(odd channel single only)
Models with the
/M1S or /M1
option:
1.25k Points, 12.5k Points, 125k Points, 1.25M Points, 2.5M Points, 5M Points,
12.5M Points, 25M Points, 50M Points (single only), 125M Points (single only),
250M Points (odd channel single only)
Models with the
/M2S or /M2
option:
1.25k Points, 12.5k Points, 125k Points, 1.25M Points, 2.5M Points, 5M Points,
12.5M Points, 25M Points, 50M Points, 125M Points (single only), 250M Points
(single only), 500M Points (odd channel single only)
History
Automatically saves history waveforms (past waveforms that have been acquired using the same
acquisition conditions).
Cannot be used in average mode, repetitive sampling mode, or roll mode. Cannot be used at
record lengths that only allow single trigger mode. The maximum number of acquisitions that can
be held is as follows:
Standard model:
Up to 20000 acquisitions (when the record length is set to
1.25 k points)
Models with the /M1S or /M1 option: Up to 50000 acquisitions (when the record length is set to
1.25 k points)
Models with the /M2S or /M2 option: Up to 100000 acquisitions (when the record length is set to
1.25 k points)
6.5 Features
