I just got a VPI SDS but I don't think it's operating correctly.
I connected it to my VPI TNT Jr and it worked but pressing the rpm button woudn't do anything nor would the up/down arrows. I messed around with it and was able to change speed by simultaneously pressing rpm & down arrow. I could change the frequency by pressing rpm & up arrow. This would lower the frequency but I can't figure out a way to raise it. I also can't get into setup. The output voltage & frequency match the display.
I assume this is a firmware issue?
Thanks.
Kevin Looker
I connected it to my VPI TNT Jr and it worked but pressing the rpm button woudn't do anything nor would the up/down arrows. I messed around with it and was able to change speed by simultaneously pressing rpm & down arrow. I could change the frequency by pressing rpm & up arrow. This would lower the frequency but I can't figure out a way to raise it. I also can't get into setup. The output voltage & frequency match the display.
I assume this is a firmware issue?
Thanks.
Kevin Looker
I was looking around inside the SDS and noticed what I thought was odd.
There are 2 connections to the front panel: a 16 pin ribbon cable and a 4 pin cable. You can see them here:
Only 3 leads from the 4 pin connector are connected.
Anyone know if this is correct?
Thanks
There are 2 connections to the front panel: a 16 pin ribbon cable and a 4 pin cable. You can see them here:
Only 3 leads from the 4 pin connector are connected.
Anyone know if this is correct?
Thanks
No, it is not. The far left pin in the close up picture is ground, the other 3 are up/down/speed. With the connector the way it is shown, the common ground to the switches is removed and the Speed button is the ground. That is why you have to press both the speed button and one other to get anything. Move the connector one place over to the right and your buttons should work right.
The other connector is for the display.
VPI SDS Schematic
The other connector is for the display.
VPI SDS Schematic
