User Manual

GDS-1000A-U Series User Manual

Selecting the waveform update mode

Background

The display update mode is switched

automatically or manually according to the

horizontal scale.

Main mode

Updates the whole displayed waveform at once.

The main mode is automatically selected when the

horizontal scale (timebase) is fast.

Horizontal scale

≤100ms/div

Trigger

All modes available

Roll mode

Updates and moves the waveform gradually from

the right side of the display to the left. The Roll

mode is automatically selected when the

horizontal scale (timebase) is 50ms or slower.

When in the Roll mode, an indicator appears at the

bottom of the display. When in roll mode the

record length is 2M (1 channel) or 1M (2 channel).

Main mode

Roll mode

Timebase

≥50ms/div (≤1.25MS/s)

Trigger

Auto mode only

Selecting the Roll

mode manually

1. Press the Horizontal menu

key.

2. Press Roll. The horizontal

scale automatically becomes

50ms/div and the

waveform starts scrolling

from the right side of the

display (If the oscilloscope

is already in the Roll mode,

there will be no change).