MC1C40 / GPA_INT
The MC1C40 is in principle identical to the MC4C40 with the exception that it contains only 1 C40 DSP. It is responsible for the Gradient Safety Watchdog functionality (stimulation monitoring) for Quantum gradient on the Symphony and Sonata systems.
The stimulation values are calculated on the MC1C40 using the actual gradient values coming from the GPA. If limits are exceeded, the GPA will be disabled.
The GPA INT is connected to the MC1C40 as a piggy back. The only used front connection is X4 which receives the actual current values of the three gradient axes from the GPA.