I am considering the purchase of a Picoscope 4424 and need some information about the time delay between measurements on 2 or 4 channels :
How simultaneous is the sampling on the different channels (for instance at 200KSa/s sampling rate) ?
If you are using one out of A and B and/or one out of C and D the samples should be simultaneously. On the two channel product they are always simultaneously sampled.
They will be out by half a sample period on the highest sampling rate when using 4 channels. The highest sampling rate is 20 MS/s when using 4 channels, this makes the period 50 ns. The samples on channel B and D will be out 25 ns compared to channel A and C. This is true even for the lower sampling rates, at 200 kS/s there will still only be 25 ns difference.
Erik wrote:They will be out by half a sample period on the highest sampling rate when using 4 channels.
Hi, I would like to verify how this is true for Picoscope 3206D - do I expect right that there a defined fixed delay between the channels (1 ns in this case), and the same holds for 5200 series (in 8-bit mode)?
I want to compare channel A with channels B and C which should be simultaneous in phase else I am unable to prove what I set out to do.
Is a 2408B four channel device able to show simulataneousness (if thats a word) of these channels.
Rob
The only devices we sell that do not sample simultaneously on all channels are the PicoScope 3425 (Differential input oscilloscope) and the 4424 in some modes.
Discontinued devices which have sequential or interleaved sampling in some modes are the 3224 and 3424.