The AT line of products is highly integrated for the Advantest V93000 system and fits right underneath the load board, in the cavity of the test head extender. Due to this, the signal path to the DUT is kept extremely short.
The AT4025 is a fully featured, cost effective four channels equivalent time sampling oscilloscope. It can be configured to have an analog bandwidth of 32 or 50 GHz. The memory depth is 256 MSamples. Samples are 16-bit.