For the medium to high pin-count/complexity
ECUs, the measurement engine is VXIbus-based
with a DMM, Measurement Control Module (MCM),
Event Detector, Arbitrary Function Generator
(ARB), Digitizer, Counter, and other optional VXIbased
instrumentation. Optional GPIB instruments
may be configured. As in the low pin-count/complexity
ECU platform, all switching (instrumentation,
power supply and load) resides in the
Switch/Load Unit. The E8780A consists
of one Switch/Load Unit, while the E8785A contains two of these units. These
two systems use the IEEE-1394 FireWire for VXI
I/O and GPIB for all IEEE-488 instruments (power
supplies and additional optional message based
instruments).
