VPI SDS use question


I recently made several upgrades to my Scoutmaster and now have an SDS. I've got everything set up and running, but just had a question about the operation of the SDS. When the SDS is on, but the table is off, the voltage is steady at 72. When I turned the table on and set it to 33 RPM, the voltage jumps to 84. Changing to 45 RPM makes the voltage increase to 102. I just wanted to make sure this was normal operation as I'm not familiar with the SDS and the manual (like most VPI manuals) isn't very clear.
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Showing 3 responses by kgturner

Mark:

I'll have to check when I get home, but I think I've seen the SDS display 115 on start up. Then it ramps down to 72 after the start up sequence is complete. If I turn the table on and set it to 33, it ramps up to 84. I only used the SDS briefly this weekend as I had family in from out of town. I'll try to give it a full work out this evening to see if it drops the voltage back down to 72 after getting the platter up to speed.
Mark:

Thanks for your input. When I turn the SDS on, it does start at 115 and then drops to 72 after a few seconds. I printed out the calibration manual and when I got home, I looked at my settings and my SDS was set to 84 for 33.3 and 102 for 45. My software version looks to be 1.1 so I reset the corresponding speeds to their factory default of 72 and 90. I also have a KAB strobe. My 33.3 setting is 59.83 and my 45 setting is 80.80. I'm still gotta fine tune my settings, but things look pretty spot on.