hi Molly,<br><br>I would advise to use one PC as master (probably the one that also connects to physiological acquisition device), and use a splitter cable to separate two of the digital output (data)lines. Then, connect these lines to one of the inputs of the printer port of the other PCs. <br>
The logic is exactly the same as connecting a response box to the printer port (<a href="http://pfcgroot.nl/e-prime/85-tips-and-tricks/71-button-box-on-printer-port.html">http://pfcgroot.nl/e-prime/85-tips-and-tricks/71-button-box-on-printer-port.html</a>). The master PC can then toggle the two output lines to sync. with the other PCs . <br>
The same technique can be used with a serial port, so that might be a workaround if the printer port is exclusively used for the physio-device. So, the main issue is finding a technician who has some knowledge of printer ports and soldering irons. <br>
If safety is an issue, you might have to use additional hardware to isolate the systems (opto-couplers).<br><br>Best,<br>Paul<br><br><div class="gmail_quote">On 10 December 2012 18:27, Molly Cannon <span dir="ltr"><<a href="mailto:mollykcannon@gmail.com" target="_blank">mollykcannon@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><table style="border-color:rgb(102,102,153);font-family:'Trebuchet MS',Arial,Helvetica;width:1678px;padding-right:5px;padding-left:10px;font-size:10pt" cellpadding="0" cellspacing="0">
<tbody><tr style="background-color:rgb(240,248,255);background-repeat:initial initial"><td colspan="2" style="font-size:x-small;border-color:rgb(102,102,153)"><font size="-1">Hello,<br><br>I have built three tasks in E-Prime. In my experiment there are three different computers, each one will run a different task. Subjects will be able to select which task they want to do (but will end up using at least 2 of the computers). <br>
<br>I will collect physiology data simultaneously. Unfortunately, our system only allows one computer to to communicate with the parallel port. I need some way to either start all the eprime programs at the exact same time or log the data so I can compare between e-prime scripts? <br>
<br>It is critical that it be accurate since I will be interpreting the physiology data with this information. </font><span style="font-size:small">Any advice you can provide me with would be appreciated!</span><span style="font-size:small"> </span><font size="-1"><br>
<br>Thank you, <span class="HOEnZb"><font color="#888888"><br><br>Molly Cannon</font></span></font></td></tr></tbody></table><span class="HOEnZb"><font color="#888888"><div style="font-size:6pt;font-family:'Trebuchet MS',Arial,Helvetica;min-height:1pt">
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