GW Instek GDS-1000 Series User Manual - Manual (Page 75)

SAVE/RECALL
75
External SD
card
An SD card (2GB or less, FAT or
FAT32 format) can hold practically
unlimited number of waveforms.
Ref A, B The two reference waveforms are used
as the buffer to recall a waveform in
the display. You have to save a
waveform into an 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 data
format One division includes
25 points of horizontal
and vertical data. The
vertical point starts
from the center line.
The horizontal point
starts from the leftmost
waveform.
0
25
–25
25 50 75
The time or amplitude represented by each data
point depends on the vertical and horizontal scale.
For example:
Vertical scale: 10mV/div ( 4mV per point)
Horizontal scale: 100us/div (4us per point)
Waveform file
contents: other
data A waveform file also includes the following
information.
 Memory length
 source channel
 vertical offset
 vertical scale
 coupling mode
 waveform last dot
address
 date and time
 trigger level
 vertical position
 time base
 probe attenuation
 horizontal view
 horizontal scale
 sampling period
 sampling mode