Well, thanks a lot for precious comments about Fluke 289.
I read the application note by Fluke about the datalogging on this meter. They say, clearly, it's not a scope and uses a different approach to get less data for long sessions of capturing data.
There is
the interval data logging, you can set from 1s up to 1h31 minutes, and the meter will take a measurement at that rate; but there is the concept of
event. When the measured signal changes above a selectable valueu, it takes the measument and takes note If stabilized or not. What is "stabilized": from manual, on
AutoHold explanation, if the signal
changes (threshould is selectable in percentage on Setup) and keeps its value
stable for at least 1s. Events may occur at any time.
The meter can save 10000 interval_data and up to 15000 interval + events.
The session can take up to 94 days!!!
Also there is the response time: 100ms - so, signals shorter than this may not be captured. I've tested and is true. Even 50ms events are detected, but amplitude can be less than real one.
There is another funcion to monitor spourious sinals, but online (you keeping your eye on data) :
Peak monitoring, with response of 250us or 4000 Hz sinal !
I have tested this too. Really amazing feature!
It's a great logging meter, not an oscilloscope, for industrial applications and long sessions of data capturing.
My comments that follows keep their significante, but It is actually a great equipment and very valuable for detecting transient and problemat signals.
It is not s scope and the its power is adjust time capturing according the session lenght. If you will take a session of 24h of monitoring some circuit, don't put an interval of 1s, there's no sense on doing this. Don't mind, the events will trace any annomally between the normal time acquisition.
As many said here, for a 2013 multimeter, it was a king
... nowadays, I don't believe so. But Fluke should keep one eye on concurrence and their fast evolution.
Having a certificate equipment, as chinese aren't at all, is expensive; make good manuals, in many idioms, calibrating and taking care on production lines are too expensive, but if Fluke wants to keep their place on market, I believe it would be a good approach to revitalize their line of meters, incorporate the bluetooth or even better for this kind of equipment: internet capabilities.