Hello,

I'm a user of Agilent DSO81204B with memory option. I would like to

capture as many segments as possible in the segmented acquisition mode.

Is there a method or table to get the maximum available segments

for a given acquisition points and sampling rate?

I checked the number of maximum segments for a given points.

It is likely that sampling rate also relates to the available number of

segments. In case of 10 Gsample/sec and 20,000 points, 2048 segments

were maximum. However, I got 1024 segments for 2 Gsample/sec

and 20,000 points.

Thanks,

Tsutomu Tsuda

I'm a user of Agilent DSO81204B with memory option. I would like to

capture as many segments as possible in the segmented acquisition mode.

Is there a method or table to get the maximum available segments

for a given acquisition points and sampling rate?

I checked the number of maximum segments for a given points.

It is likely that sampling rate also relates to the available number of

segments. In case of 10 Gsample/sec and 20,000 points, 2048 segments

were maximum. However, I got 1024 segments for 2 Gsample/sec

and 20,000 points.

Thanks,

Tsutomu Tsuda

The maximum number of samples per segment is typically the max memory per channel divided by the number of segments rounded up to the next power of 2.

For the DSO80000 Series scopes, the maximum segment size is 1 M for sample rates ≥5GSa/sec. The memory is doubled when in 2 channel mode for sample rates ≥4 GSa/sec. Due to overhead in the acquisition, the maximum samples per segment is reduced when you use a large number of segments >2048 in DSO80000 Series

Max number of segments Standard memory Optional memory

Sample rate 4-chan mode 2-chan mode 4-chan mode 2-chan mode

40 GSa/s NA 128 NA 4096

20 GSa/s 64 128 4096 8192

5-10 GSa/s 64 128 8192 8192

<= 4 GSa/s 128 256 16384 16384

Regards,

Mark