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2-7
IM DL850-03EN
Main Features
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App
Index
2.3 Waveform Acquisition
Based on the data that has been stored in the acquisition memory, the DL850/DL850V performs
various operations, such as displaying waveforms on the screen, computing, measuring cursors, and
automatically measuring waveform parameters.
You can set the number of data points to store in the acquisition memory (the record length), enable or
disable the sample data averaging feature, and so on.
Record Length
Record length
refers to the number of data points that are stored to the acquisition memory for each
channel.
Display record length
refers to the data points from the data stored in the acquisition memory
that are displayed on the screen. Normally, the acquisition-memory record length and display record
length are the same, but the time axis setting may cause them to differ. When you change the time
axis setting, the sample rate and record length also change.
On the standard model of the DL850/DL850V, you can set the record length to a value between 1
kpoint and 250 Mpoint. Depending on the model, you can set the record length to a value of up to 2
Gpoint.
Acquisition Mode
Specify how the DL850/DL850V processes the sampled data, stores it in the acquisition memory, and
uses it to display waveforms. There are four acquisition modes: Normal, Envelope, Averaging, and
BoxAverage.
Hard Disk Recording
When measurement starts, you can record data to an external hard disk that supports eSATA (external
Serial ATA; /HD0 option) or to an internal hard disk (/HD1 option).
*
The recorded data is saved to files
automatically. You can load the saved data using the DL850/DL850V and convert it to a format that
you can analyze on a PC (ASCII or floating point).
* Models with the /HD0 option are equipped with eSATA connectors. You need to purchase a hard disk that
supports eSATA separately.
Input signal
Normal measurement
Hard disk recording
Loading of
waveform data
Acquisition
memory
Saving and loading of waveform data
External hard disk that supports eSATA
(/HD0 option)
or
an internal hard disk
(/HD1 option)