GW Instek GDS-2000 training manual - Manual (Page 27)

GDS-2000 ADVANCED
27
Long Memory
Background The long memory mode gathers more data for
each acquisition. This mode is useful for observing
details of single-shot signal like spike noise.
Connection CH1
CH1 Scale 5us/div, 100mV/div
(If CH1 is still unstable, increase the trigger level)
1. At default, the memory is in short mode. Press the Run/Stop
key, then use the TIME/DIV knob to zoom the waveform up to
250ns/div. Observe that the waveform edge appears flat. Press
the Run/Stop key again to go back to Run mode.
Run/Stop
POSITION
TIME/DIV
Run/Stop
2. Press the Acquisition key → F5 (Mem Leng) to select long
memory. Then press the Run/Stop key and zoom the waveform
up to 100ns/div. Observe that the hidden glitch appears.
Mem Leng
12500
F 5 Acquire
Run/Stop
POSITION
TIME/DIV
Demonstration completed