I have a 320, but do not have a slot-in wireless receiver. I built an adapter for 2 mini jacks to the Dsub at the bottom of the slot. My problem is that the menu choice for selecting "All" channels from the slot is greyed out, so I'm stuck with one channel. Are there some pins I can jump to trigger the menu choice ?
The Pin-out I have reads 1=ground 2=Ch 1(unbalanced) 3=Ch 2(unbalanced).