MR8740、MR8741_user_manual_eng_20191016H.pdf - 第255页

11.1 Recording Settings 243 10 Chapter 1 1 Memory Division Function 11 1 1.1 Recording Settings Procedure To open th e screen : Right-clic k and select [ST A TUS]  [Memory Div] sheet 1 Enable the Memory Divisio n functi…

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• Waveforms can be recorded into individual blocks by dividing memory space into multiple blocks.

• You can record waveforms beginning at any block (Start Block), choose which blocks to display (Display

Block), or display multiple overlaid blocks (Reference Block).

• The maximum number of blocks for memory division depends on the installed memory board and recording

length (up to 1024 divisions).

• Triggered waveform data can be acquired continuously and recorded sequentially in specified blocks (at

the Start Block, for the specified Used Blocks). Dead time while displaying (during which triggers are

ignored) can be minimized.

• Even if the Memory Division function is not used, up to 16 blocks of data (depending on the specified

recording length) can be saved to each block, so that previously recorded data can be selected for display

on the Waveform Screen.

See:"6.8 Seeing Block Waveforms" (p.136)

Operations available from the [Memory Div] sheet

Normal

Memory Division

12345 6

Reference Block

Display Block

The Reference Block can be displayed as an

overlay.

Dead time (not recorded)

Recording length

Blocks

When the number of Used Blocks = 5

Start Block

When saving manually, select whether to save all used blocks,

or just the displayed block. (p.93)

12 34 5

When batch saving, an index

file (SEQ) is created. When

reloading this file, all saved

blocks can be read at once.

Auto Save

Used Blocks

11.1 Recording Settings

243

Chapter 11 Memory Division Function

11.1 Recording Settings

Procedure

To open the screen: Right-click and select [STATUS]  [Memory Div] sheet

Enable the Memory Division function.

Move the flashing cursor to the

[Memory Div] item.

Select [On].

Set the number of divisions.

Move the flashing cursor to the [Division] item.

Set the number of blocks for division.

Default setting: 4

Set the recording length.

(This is linked to the recording length setting on the [Status]

sheet.)

Move the flashing cursor to the [Shot] item.

Set the recording length.

The maximum recording length and number of divisions are determined

automatically according to memory capacity and the number of chan-

nels used.

Setting range: "Appendix 2.4 Maximum record length and number of di-

visions (Memory division function)"(p.A7)

Set the start block.

Move the flashing cursor to the [Start Block] item.

Set the block number at which to start recording.

Default setting: 1

Set the Used Block number.

Move the flashing cursor to the [Use Blocks] item.

Set the number of blocks to use.

Default setting: 1

Off

Memory Division is disabled.(default setting)

Memory Division is enabled.

About Recording

When a fast timebase is selected, display-

ing and saving operation are not available

while measuring.

Selecting the display screen for auto sav-

ing lengthens dead time.

Use Blocks (Purple)

Memory Division, Waveform Calcula-

tion, and Roll Mode cannot be enabled

at the same time.

When the number of divisions is 32, the

Start Block is 5 and the Used Block num-

ber (number of blocks to use) is 20

No. of Divisions

Start Block

To display any block on the waveform screen when finished measuring:

Set the number of blocks to display (p.244).

(This can also be set on the Waveform screen (p.136).)

To display overlaid waveforms:

Set the number of blocks for reference (p.244).

11.2 Display Settings

244

11.2 Display Settings

Procedure

To open the screen: Right-click and select [STATUS]  [Memory Div] sheet

To display any block on the Waveform screen

Set the display blocks

Set after measurement is complete.(This can also be set on the

Waveform screen (p.136).)

Move the flashing cursor to the [Display Block] item.

Set the number of blocks to display on the Waveform screen.

To display multiple blocks as overlaid waveforms

Enable the Reference Block function

Move the flashing cursor to the [Ref Block] item.

Select [On].

(When Reference Blocks are enabled [On])

Select whether to reference every block

To overlay all waveforms, select [All Blks On].

To overlay selected waveforms, move the flashing cursor to the num-

ber column of the reference block and select the block number.

Select

To display every block as its waveform is acquired

Enable tracking waveform display.

Move the flashing cursor to the [Wave Display] item.

Select [On].

Viewing Memory Division waveforms on the Waveform screen

See: "6.8 Seeing Block Waveforms" (p.136)

Off

Reference Blocks are not displayed (default setting)

Reference Blocks overlay Display blocks on the display.

All Blks Off

Set reference to all blocks to Off.

All Blks On

Set reference to all blocks to On.

Ref On-Off

Set On or Off. If [On] is selected, the block frame

of the selected block number is displayed as a

green square.



Select a block.

Off

The waveform of only the last block is displayed after re-

cording up to the number of used blocks. (default setting)

Waveforms are displayed one block at a time as they are

acquired at each trigger event.

Display Block (Green)

Reference Block (Light Green)

Measurement data is recorded at the

colored positions.

When the Display Block is 5 and the Ref-

erence Block is 3

Reference Block No.

Enabling the Trace Waveform display

lengthens dead time.

About Dead Time:

See: "Difference Between Dead Times

During Normal and Memory Division

Recording" (p.246)

Even if the Roll Mode is enabled (other

than Off), it is not usable when the Trace

Waveform display is disabled.

Reference Block Selection

Reference Blocks can also be selected

and deselected in the [Ref Block] item on

the [List] display.

See: "Getting Details on Each Block:"

(p.245)

Trigger time