MR8740、MR8741_user_manual_eng_20191016H.pdf - 第94页
3.6 Starting and Stopping Measurement 82 Measurement methods a re normal measurement (start recordin g when measurement starts) and trigg er measurement (start recording when tr igger criteria are satisfied). In this man…
3.6 Starting and Stopping Measurement
81
3
Chapter 3 Measurement Procedure
This section explains how to initiate and terminate a measurement.
Click [START] to start measuring.
Click [STOP] to stop recording at the end of the specified recording length.
Click [STOP] again so stop recording immediately.
The operation conditions for [START] and [STOP] can be changed.
See: "Chapter 14 System Environment Settings" (p.309)
Note When [STOP] is clicked, the following indication may appear on the screen.
3.6 Starting and Stopping Measurement
Starting Measurement
Procedure
To open the screen: Right-click and select [DISP] Waveform screen
• When a measurement is started, waveform data that were displayed on the
screen are cleared. However, when the measurement conditions are the same,
the waveform data for up to 16 past measurements is retained as history.
• Measurement can also be started by inputting a signal at the external control
terminal.
See:"Chapter 16 External Control (MR8741 Only)" (p.335)
To prevent inadvertent measurement start
To reduce the risk of accidentally starting a measurement through an
operation error, operation conditions can be set for [START].
See: "Start Action" (p.311)
To automatically save data during measurement
See: "4.2.2 Automatically Saving Waveforms" (p.88)
Stopping Measurement
The measurement will stop at the point where the mouse is
clicked.
The stopping procedure is canceled and measurement
continues.
3.6 Starting and Stopping Measurement
82
Measurement methods are normal measurement (start recording when measurement starts) and trigger
measurement (start recording when trigger criteria are satisfied). In this manual, "Measurement start"
means the instant when you click
[START], and "Recording start" means the instant when recording begins
on the waveform screen.
• Select the Trigger mode to record upon either single or repeating trigger
events.(p.191)
• Enable pre-triggering if you want to capture data measured prior to trigger
events.(p.204)
When the trigger mode is set to [Repeat] or [Auto] (Memory function only), the
number of trigger events is shown in the top part of the screen (Storage Counter).
See: "Explanation of Screen Contents" (p.20)
Measurement and Internal Operations
Start Measurement
[START]
End of Measurement
Recording
Starts
Recording
Stops
[Now Storing]
[Storing Finished]
[ ]: Status Bar Display
Recording
Normal
Measurement
Without triggering
Terminates when recording length has been recorded.
End of Measurement
[Trigger Wait]
Recording
Starts
T
Recording
Stops
[Now Storing]
Recording starts when a trigger event occurs and continues for the specified recording
length.
Start Measurement
[START]
[Storing Finished]
Recording
Trigger
Measurement
Trigger mode: [Single]
Pre-triggering not enabled
Single triggering
Recording starts when a trigger event occurs, continues for the specified recording length,
and returns to the Trigger Wait state.
Stop Measurement
[STOP]
[Trigger Wait]
Recording
Starts
T
Recording
Stops
[Now Storing]
Start Measurement
[START]
Recording
[Trigger Wait]
T
Recording
Starts
Repeated triggering
Trigger mode: [Repeat]
Pre-triggering not enabled
[Pre-Trigger Wait]
End of Measurement
[Trigger Wait]
Start Measurement
[START]
T
Recording
Stops
[Now Storing]
After starting measurement and internally acquiring data for the specified
pre-trigger period, the Trigger Wait state is activated.
Recording
Starts
The specified pre-trigger wait period is recorded before each trigger event
The data before a trigger event (for the pre-trigger period) is recorded.
Recording
[Storing Finished]
T
Post-trigger waveform
Waveform dur-
ing specified pre-
trigger period
Repeated triggering and recording of phenomena before each event
Trigger mode: [Repeat]
Pre-triggering enabled
Operation is
repeated
from pre-trig-
gering stage.
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4
Chapter 4 Saving/Loading Data & Managing Files
Data can be saved and loaded and files can be managed.
Before saving data, configure the save settings on the [File Save] sheet.
Load data and manage files from the File screen.
Saving/Loading Data
& Managing Files Chapter 4
Opening the [File Save] sheet
You can switch setting
screens by clicking a tab.
Click [SYSTEM] in the right-click
menu.
Saving Data (p.87)
Save Method
• Auto save
• Manual save by clicking [SAVE]
(Selection save, Quick save)
Operations available from the [File Save] sheet
Save Types
(Auto Save)
• Waveform data
(Manual save by clicking [SAVE])
• Settings data
• Waveform data
• Display screens
• Waveform screen
• Numerical calculation results
(p.221)
• Waveform evaluation area