Syncing E-Prime Scripts on Multiple Computers

[Paul Groot]

hi Molly,

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.
The logic is exactly the same as connecting a response box to the printer
port (
http://pfcgroot.nl/e-prime/85-tips-and-tricks/71-button-box-on-printer-port.html).
The master PC can then toggle the two output lines to sync. with the other
PCs .
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.
If safety is an issue, you might have to use additional hardware to isolate
the systems (opto-couplers).

Best,
Paul

On 10 December 2012 18:27, Molly Cannon <mollykcannon at gmail.com> wrote:

> Hello,
>
> 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).
>
> 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?
>
> It is critical that it be accurate since I will be interpreting the
> physiology data with this information. Any advice you can provide me with
> would be appreciated!
>
> Thank you,
>
> Molly Cannon
>
>
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