Updated Electronics for DC SURGE testing.
The AT5600 has a improved redesigned SURGE Generator to detect winding weakness, and help you guarantee quality.
The SURGE test measures the characteristic oscillation between your item under test, and the discharge capacitors in the AT.
As the AT5600 uses newer improved capacitors the measurement, only in some cases, can be slightly different to the AT3600.
In the rare event that you do see a large difference between AT36+ AT56, we have implemented the following.
SURGE Load compensation
The AT5600 has been enhanced with an optional Load Compensation on the SURGE test. (it’s also available for LL Leakage inductance)
Like Load Compensation common on many other LCR meters, this allows you to program a nominal value into the test program of a known good part.
During Load compensation you are prompted to fit this part, and the AT5600 measures it.
On subsequent tests, the AT5600 then scales the results in line with this known part.
Effects of Wide Limits on Sample rate
To improve measurement, the AT5600 has variable sample rates that are used on Surge.
These are 25, 50, 100 ,200, 400, 750 kHz and 1, 3, 6, 12 MHz. They are selected automatically depending on your measurment limits.
Very small mVs SURGE results use the fastest sampling rate, which give better resolution and repeatability.
Larger results (i.e. oscillation over a longer period) will use a slower rate to make sure that all the characteristic decay waveform is captured.
User should be aware, that if your chosen limits are much larger than your expected result, (e.g. using a 100 mVs limit on a part where you expect 10 mVs) then this will result in a non-optimal sample rate being used, and in turn a less accurate result.
Full explanation is in AT5600 User manual 7.30 SURG - Surge Stress Test