GW Instek GDS-1000A Series User Manual - Manual (Page 71)

CONFIGURATION
71
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 250ms 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 ≥250ms/div (≤250KS/s)
Trigger Auto mode only
Selecting the Roll
mode manually 1. Press the Horizontal menu
key.
MENU
2. Press Roll. The horizontal
scale automatically becomes
250ms/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).