Hi, i recently bought a second hand video waveform generator and I’m having a bit of trouble synching it with my visual cortex.
Ive hooked up the Waveform Generator to sync with the field sync on the Cortex ( the vertical sync) and this keep the low oscillation rate relatively synced, but docent seem to sync the high oscillation rates.
I suspect that the Waveform Generator is running slightly out of sync, there is still slight movement when synced with a low oscillation rate, and this movement is enough to completely un sync it at higher rates.
aka, im getting synced lines that slighty wiggle up and down when the Waveform Generator is running slowly, but it just turns into unsynced noise when its running faster.
Does anyone know any fixes for this problem? maybe theirs some setting I need to change on the back of the Waveform generator. Or might it just be that the second hand waveform generator is a lil busted, and if so is there anyway to fix it?
Thanks so much for the help!!