Using the A/B Cursors

This section describes how to read values from the measured waveform using the A/B cursors. You can also use the cursors to specify a range for saving data or performing numerical calculations.

Reading values from the waveforms

This section describes how to read measured values, times, and time differences between cursors using the A/B cursors.

When using the scaling function, post-scaling values are displayed.

 

1 Under [Display], set the display to [Wave+Value].

2 Set the display item to [Cursor].

3 Select [ON] under the A/B cursor settings.

The A/B cursors will be displayed on the screen.

When the Cursor icon is displayed, pressing the any one of the SCROLL/CURSOR keys will automatically change the setting to [ON] even with the A/B cursors set to [OFF].

4 Select the A/B cursor type.

Vertical

Vertical axis cursors

  • Times at the A/B cursors*1

  • Measured values at the intersections of the A/B cursors and the waveform

  • Time lag between the B and A cursors (B-A)*1

  • Difference in measured values at the B and A cursors (B-A)

Horizontal

Horizontal axis cursors

  • Measured values at the A and B cursors

  • Difference in measured values at the B and A cursors (B-A)

  1. *1

    The instrument expresses minute, a unit of time, included in cursor reading values in terms of the letter “m” instead of “min”.

5 Select the information to display.

A, B

A cursor measured value, B cursor measured value

A, B−A

A cursor measured value, difference in measured values at the B and A cursors (B-A)

B, B−A

B cursor measured value, difference in measured values at the B and A cursors (B-A)

A, Comment

A cursor measured value, channel comments

B, Comment

B cursor measured value, channel comments

B−A, Comment

Difference in measured values at the B and A cursors (B-A), channel comments

6 Select the A/B cursor to move.

Cursor A ☑

Moves only the A cursor.

Cursor B

Moves only the B cursor.

Sync

Moves the A and B cursors at the same time.

7 Change the channel to display using the button on the top right of the screen (example: [1/2]).

8 Press the SELECT key to display the Cursor icon.

Each time you press the SELECT key, the display will switch between the Cursor icon (A/B cursor movement) and the Scroll icon (waveform movement).

For more information about the Cursor icon, see “1.13 Observing Waveforms” in the Instruction Manual.

9 Press the SCROLL/CURSOR keys to move the A/B cursors.

Key operation

Moves the cursor left a large amount
(10 data points at a time).

SELECT +

Moves the cursor five frames to the left.

Moves the cursor right a large amount
(10 data points at a time).

SELECT +

Moves the cursor five frames to the right.

Moves the cursor left a small amount
(1 data point at a time).

SELECT +

Moves one screen to the left on the waveform (one horizontal frame for the displayed waveform).

Moves the cursor right a small amount
(1 data point at a time).

SELECT +

Moves one screen to the right on the waveform (one horizontal frame for the displayed waveform).

10 Check measured values at the A/B cursors.

  1. (1)

    The values the A/B cursors read from waveforms will be displayed.

  2. (2)

    Under the table, the frequency calculated from the A/B cursors will be displayed. The frequency is the inverse of the time of period the A/B cursors read.

A, B

Frequency derived from the period between the trigger point and the A cursor, frequency derived from the period between the trigger point and the B cursor

A, B−A

Frequency derived from the period between the trigger point and the A cursor, frequency derived from the period between the A cursor and the B cursor

B, B−A

Frequency calculated from the period between the trigger point and the B cursor, frequency derived from the period between the A cursor and the B cursor

A, Comment

Frequency derived from the period between the trigger point and the A cursor

B, Comment

Frequency derived from the period between the trigger point and the B cursor

B−A, Comment

Frequency derived from the period between the A cursor and the B cursor

 

You can use numerical calculations to calculate values such as the maximum value, minimum value, and average value for measured waveforms.

“6.1 Performing Numerical Calculations” in the Instruction Manual.