GW Instek GDS-1000A Series User Manual - Manual (Page 95)

SAVE/RECALL
95
Detail Contains the waveform amplitude and
time of each point (4k/1M/2M)
relative to the trigger point.
Fast Only contains the waveform
amplitude data for each point
(4k/1M/2M).
Waveform type CH1, 2 Input channel signal
Math Math operation result (page59)
Storage location Internal
memory
The oscilloscope’s internal memory,
which can hold 15 waveforms.
External
SD/SDHC
card
An SD/SDHC card (FAT or FAT32
format) can hold practically an
unlimited number of waveforms.
Ref A, B Two reference waveforms are used as
a buffer to recall a waveform in the
display. You have to save a waveform
into internal memory or an SD card,
then copy the waveform into the
reference waveform slot (A or B), and
then recall the reference waveform
into the display.
Waveform
Memory Depth The memory depth is limited to 1 M points when
both channels are activated or 2M points when
only a single channel is activated. The signal must
be triggered /stopped to have access to the full
memory depth. Therefore when a signal is saved
the waveform will be automatically stopped if it is
not manually triggered /stopped first.
There are a number of conditions when all of the
available memory is not utilized due to a limited
number of different sample rates. This can be
caused by an un-triggered signal, or a time/div
setting that is too fast to display all the points on
screen.