On the oscilloscope Data Sheet is reported:

High Resolution Mode 12 bits of resolution when ≥10 μs/div at 4 GSa/s and 5 GSa/s (1 GHz models)

or ≥20-μs/div at 2 GSa/s

and on the oscilloscope User's Guide, page 199, is written:

Displayed Sample Rate (sr, per channel, 2 Gsa/s max)...Bits of resolution

500 MSa/s < sr ≤ 2 Gsa/s................................................8

100 MSa/s < sr ≤ 500 MSa/s...........................................9

20 MSa/s < sr ≤ 100 MSa/s.............................................10

5 MSa/s < sr ≤ 20 MSa/s.................................................11

sr ≤ 5 MSa/s....................................................................12

From the Data Sheet I understand that for getting the 12 bits of resolution is enough to to have

a Time Base setting ≥20-μs/div at 2 GSa/s;

but from the User Manual it looks like the 12 bits resolution is available only when the

Sample Rate is ≤ 5 MSa/s.

Obviously there is something that I don't understand and I would like to know how I have to

interpret the above reported specifications.

Ciao and many thanks in advance for any clarification on this matter.

Franco

Web: http://www.flanguasco.org

High Resolution Mode 12 bits of resolution when ≥10 μs/div at 4 GSa/s and 5 GSa/s (1 GHz models)

or ≥20-μs/div at 2 GSa/s

and on the oscilloscope User's Guide, page 199, is written:

Displayed Sample Rate (sr, per channel, 2 Gsa/s max)...Bits of resolution

500 MSa/s < sr ≤ 2 Gsa/s................................................8

100 MSa/s < sr ≤ 500 MSa/s...........................................9

20 MSa/s < sr ≤ 100 MSa/s.............................................10

5 MSa/s < sr ≤ 20 MSa/s.................................................11

sr ≤ 5 MSa/s....................................................................12

From the Data Sheet I understand that for getting the 12 bits of resolution is enough to to have

a Time Base setting ≥20-μs/div at 2 GSa/s;

but from the User Manual it looks like the 12 bits resolution is available only when the

Sample Rate is ≤ 5 MSa/s.

Obviously there is something that I don't understand and I would like to know how I have to

interpret the above reported specifications.

Ciao and many thanks in advance for any clarification on this matter.

Franco

Web: http://www.flanguasco.org

to be migrated, sourceId: 105759