The HP / Agilent E1697A 155 Mb/s Optical Line Interface generates and analyses ATM cell streams contained within a SONET or SDH framing format. The E1697A is a single-slot VXI module that provides test capability at the physical and ATM cell layers for the E4200/E4210 Broadband Series Test System. The E1697A is capable of operating in both a cell mode and in a SONET/SDH frame mode. This allows the user to not only examine ATM cells mapped into a SONET/SDH frame but also all of the SONET/SDH frame data. Line interface modules not only connect the device or system under test to your Broadband Series Test System, but also provide physical, convergence, and ATM cell testing capabilities. Transmission test functionality includes: Traffic generation Cell error, loss & delay measurements Traffic capture & playback