I checked the output of the PC1600v software with a midi monitor when pressing button fifteen and it sends the data described for the bulk dump request, but I cannot get any response from the spectrum synth when I send it to the synth. I’m a little confused though because in the PC1600v edit menu there is a gc parameter which should insert the midi channel, but there is no byte transmitted that matches it. I tried using a sequencer to send F0 00 00 1B 02 09 01 7F F7 and F0 00 00 1B 02 09 01 01 7F F7 (for channel 1) without any response.
