Velleman PCS100A pcs100 - pcs500 - k8031 - Manual (Page 14)

PCS500 / PCS100 / K8031
14
1GS/s sampling mode (not for PCS100 / K8031)
This 1GS/s sampling rate is in use on 0.2us/div, 0.1us/div, 0.05us/div and
0.02us/div ranges.
Triggering must be ON to get stable waveform images.
This mode is useable only for repetitive signals.
This operation mode is called "Random Interleaved Sampling" (RIS) method,
sometimes also called "Equivalent Time Sampling" (ET) mode or "Random
Repetitive Sampling". In this sampling mode the oscilloscope uses
successive triggering occurrences to gather the data to construct a picture of a
repetitive signal.
Hint for 1GS/s sampling:
A repetitive pulse sequence (CH2) can be displayed if a repetitive triggering
signal (CH1) is available.
CH1 + CH2
CH1 - CH2
XY Plot
INV. CH2
This button appears only in math mode. Toggles between m ath mode and
normal mode. (Not for PCS100 / K8031)
Auto Set
Automatic setup for the Volts/div, Time/div, and Trigger level to produce a
stable waveform of usable size. Trigger will be set on if the wave amplitude
on the screen is more then 0.5 division.
The signal should be repetitive for proper auto set function: Amplitude 5mV to
100V, frequency above 50Hz and duty cycle greater than 10%.