Timing displays5/10/2023 ![]() My goal is simply to minimize the variability of the time between the onset sync, detected by E-Prime, and the onset of the visual display seen by the subject. As a said at the outset, I'm not expecting perfection, or even anything close to the accuracy of a single CRT monitor. Note that I am aware of various issues (eg., input lag, rise time) that can compromise timing accuracy of LCD displays. (I do know that video resolution and quality might differ). If a splitter would be better, Also, I don't know whether the type of splitter would make any difference in this regard. However, I do not know whether using a splitter will actually improve timing consistency or solve any issues related to vertical blank synchronization. Using method #1, the E-Prime 2.0.10.184 or later Experiment Advisor will warn that "Mirroring can cause timing issues since vertical blank synchronization is not accurate between multiple displays." (see KB 5014 - FEATURE: Experiment Advisor Module - Display adapter set to clone mode). Connect a Display Port Y-splitter to the computer's VGA port, and connect one LCD monitor (via Display Port-to-HDMI or -to-VGA converter) to each side of the splitter.Connect a VGA Y-splitter to the computer's VGA port, and connect one LCD monitor to each side of the splitter or.Connect one LCD to the Display Port and the other to the VGA port, and set the display card to clone mode.Using this computer and display card, there are 3 simple ways (afaik) to accomplish what I want and display the same thing on two monitors: Our E-Prime computer has a video card ( AMD RADEON HD 7470) with one Display Port and one VGA port. Of course this is a very common situation for such labs (using EEG, fMRI, EDR, etc). ![]() We want experimenters to be able to see what the subject sees, while they monitor physiological recording, so we want the E-Prime video mirrored on LCD displays in the two rooms. My question has to do ONLY with the E-Prime PC. The other room has the subject's video display and button box. Each will be monitored by experimenters in that room. One room has two PCs, one recording physiological measurements, connected (via the parallel port) to a second PC running E-Prime. I don't expect perfection, but would like feedback to help choose how to setup a new lab using E-Prime using physiological equipment in two rooms.
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