PICO PicoScope 3000 A Series

PicoScope 3000A Series Prog rammer's Guide 19
Copyright © 2011-2013 Pico Technology Limited. All rights reserved. ps3000abpg.en r9
2.8
Timebases
The API allows you to select any of 2
32
different timebases. The timebases allow slow
enough sampling in block mode to overlap the streaming sample intervals, so that you
can make a smooth transition between block mode and streaming mode. Calculate the
timebase using the ps3000aGetTimebase call.
PicoScope 3000A 2-Channel USB 2.0 Oscilloscopes
timebase
sample interval formula
sample interval examples
0 to 2
2
timebase
/ 500,000,000
0 => 2 ns
1 => 4 ns
2 => 8 ns
3 to 2
32
–1
(timebase–2) / 62,500,000
3 = 16 ns
...
2
32
–1 => ~ 68.7 s
PicoScope 3000 MSOs
timebase
sample interval formula
sample interval examples
0 to 1
2
timebase
/ 500,000,000
0 => 2 ns
1 => 4 ns
2 to 2
32
–1
(timebase–1) / 125,000,000
2 => 8 ns
...
2
32
–1 => ~ 34.35 s
PicoScope 3000A 4-Channel Oscilloscopes
PicoScope 3207A and 3207B USB 3.0 Oscilloscopes
timebase
sample interval formula
sample interval examples
0 to 2
2
timebase
/ 1,000,000,000
0 => 1 ns
1 => 2 ns
2 => 4 ns
3 to 2
32
–1
(timebase–2) / 125,000,000
3 = 8 ns
...
2
32
–1 => ~ 34.35 s