Next Steps
The previous pages will have guided you though the basic operation of the AT5600
The provided fixture and program were designed to give you a feel of the speed and simplicity of test, once a program has been written and tested and a fixture obtained to simplify and speed up connection.
Open and Short Circuit compensation
Measurement accuracy can be further improved by using the optional compensation on the AT5600.
This will effectively remove any measurement effect due the the fixture or wiring used to connect to the transformer to the AT5600.
Programs can be run without compensation, but in some cases (for example transformers with very low winding resistance, typically < 0.5 ohm) it will allow you to get maximum accuracy.
Empty bobbins have been provided with the sample transformers to allow you to experiment with this.
Short circuit compensation is performed using the bobbin marked “S/C” - this effectively fits a short in place of each winding
Open circuit compensation is performed using the bobbin marked “O/C” - this has no connections, but does ensure that the source and measure pair on each node are connected, and allows the contact resistance of connection to be removed from measurements.
Compensation only needs to be performed once before each batch run
If using the AT Editor, you can apply compensation by first downloading the program as normal, then selecting Tester>Compensate Fixture.
See user manual 14.5.11 and 13.5 for more details
If using the AT Server, it can be applied by selecting the COMPENSATE button on the AT5600 screen, after program load.
See user manual 8.1.6.4 and 13.5 for more details.
Testing Other Transformers
If you have requested them, you can also use the Universal Fixture (91-186) and connection lead set (78-030) to test other transformers.
Using the connection lead set can sometimes be slower than a bespoke fixture, and hence not always suited for fast volume production testing.
However it will allow you to experiment with other transformer types during R+D, before you need to commit to a bespoke fixture.
A YouTube showing the AT Editor being used to author a test program can be seen here
See user manual Chapter 14 for full details.
Please contact us if you have any questions on this demo, or use of the AT5600 to guarantee the quality of your magnetics production.
Many thanks for your time.