4 x 5 Matrix Module for 34970A. The Agilent (now Keysight) 34904A 4 x 8 Matrix Module gives you the most flexible connection path between your device under test and your test equipment, allowing different instruments to be connected to multiple points on your DUT at the same time. Rows or columns may be connected between multiple modules to build 8x8, 4x16 or larger matrices, with up to 96 crosspoints in a single frame. The module is designed for use with the 34970A Data Acquisition/Switch Unit. 4 x 8 Matrix Switch 32 two-wire crosspoints 300V, 1A switching