I’m not sure if I’m seeing a problem with my Teletype or if it is just something I’ve inadvertently misconfigured, but it seems like the output of TR 3 in my Teletype is somehow distorted. The teletype is from the new batch with support for direct powering of a grid, and is running Teletype 3.0 firmware.
I first noticed an issue when I plugged in my grid to the teletype, and TR 3 would seem to trigger the connected module (Peaks) more frequently than it was programmed to do so. Disconnecting the grid would return to normal.
I couldn’t see any difference between the scripts triggering other outputs, but thought it might be a noise issue related to using the grid. I tried a y-cable to power the grid from a separate source, but this didn’t fix the issue with TR 3.
To investigate further, I tried connecting TR 3 to different sound modules. TR 1 going into the trigger input of a B.I.A. drum module gave a fairly normal kick sound, whereas TR 3 gave a much more distorted sound (without changing any other settings on the module).
TR 1 triggering B.I.A.
TR 3 triggering B.I.A.
B.I.A. is a weird module, but I figure it should sound the same for two different trigger sources, so long as they are both the same themselves.
So I figured the trigger source itself must be different on TR 3. To investigate further, I sent TR 1 and TR 3 directly into my MOTU Ultralite and grabbed some comparison shots of TR 1 and TR 3 with a software oscilloscope. TR 1 is on the top, TR 3 is on the bottom - looks like there is some kind of problem with TR 3, but I’ve no idea what it is, or if it’s something I can tune.
For the purpose of the shot, the TR.TIME for both TR 1 and TR 3 is set to 10ms. I also tried with longer settings (100ms) and there is a similar looking pattern (hard to get it all on the screen tho).
So this kind of makes sense as to why the Peaks drum voice I was triggering was generating extra hits, although why this only was occurring when the grid was plugged in I’m not sure. Looking at the oscilloscope with and without the grid I couldn’t really see much difference.
As far as I can tell, all the settings for all the triggers are the same - same polarity, and (when not testing) same time. I tested the other triggers, they gave the same output at TR 1. I also swapped input channels into the MOTU, just to check that it wasn’t an issue with the MOTU, but saw the same distorted pattern for TR 3 on the other input channel.
Has anyone else experienced something this? I’m happy to investigate further or try different settings or eliminate potential contributing factors. I’m super happy with Teletype and figure this is just some kind of minor glitch (and hopefully not something that I’ve done badly wrong during installing it!)
The teletype is installed in a 84 HP skiff with an Ansible and a Just Friends attached via I2C. The other modules in the skiff are a Pam’s New Work Out and a v1 Rene. Power is from a 4MS Row Power 40.