Default 2V on output when setting SVMI mode after power up

[jmball]

I've noticed that when the device (Rev F) is first powered on, setting the channel mode to SVMI puts 2V across the channel output. It looks like this is happening because the default DAC setting is 26600 (~2V),

m1k-fw/src/main.c

Line 18 in a23df49

uint16_t def_data[5] = {26600, 0, 0, 0x30, 0x40};

. Having 2V appear on the output without requesting it is problematic because it can potentially damage some test devices. I think it would be safer just to have the default DAC setting be 0. Is there a reason why 26600 was chosen rather than 0 that I'm missing?

I've already raised this issue in the libsmu repo (analogdevicesinc/libsmu#186 with more detail), but since it seems to be a firmware issue I thought it was worth raising again here.