C H A P T E R 4 – A T 5 6 0 0 F U N C T I O N A L D E S C R I P T I O N
AT5600 User Manual 98-119 issue 14 Page 56
4.1.2. Relay Switching Matrix
The purpose of the relay-switching matrix is to connect the selected test source
and measurement circuits to the nodes required in the test.
The matrix is a crucial component in the performance of the AT5600. It is made
up of very advanced, high speed, high voltage reed relays, capable both of
holding off the 7000V test voltages used in Hi Pot tests, and of accurately
switching the very small voltages and currents encountered in other tests.
The switching of the relays is carefully controlled by the processors so that there
is no arcing across the contacts. This means that the life of the relays can be
guaranteed to last for many millions of switching operations.
4.1.3. Processors
The AT Series Testers are based on a two-processor design:
• A standard microprocessor which acts as controller, controls the test
sources, and drives the relay matrix, the keyboard and display, and the
various interfaces.
• A fast-digital signal processor that performs the measurements.
4.1.4. Test Sources
There are six different test sources within the AT5600. The processors select
which one is to be connected to the relay matrix as each test is executed.
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