"Does Eprime take the signal from USB from the MP160?"
The *physiology* signals *from* the BIOPAC MP160 go to the AcqKnowledge software, not E-Prime. And the MP160 actually communicates to the AcqKnowledge software via ethernet. Instead of using up a network port or adding a card, users may use a USB to ethernet adapter. Thus, the MP160 may *indirectly* connect to AcqKnowledge via USB, but AcqKnowledge still sees it only as a network device, not USB.
E-Prime in turn may send *digital* signals *to* an STP100C through a 25-pin connector, and from there to the MP160 and then to AcqKnowledge. Typically you would use a ParallelPort (LPT) device in E-Prime; alternatively, you could use a USB-TTL Module which provides parallel-port-like output to the STP100C, but gets handled as a serial (COM) port by E-Prime.
Finally, it looks like you could send *digital* signals to E-Prime through the same device that handles digital output from E-Prime.
"what signal are you trying to send?
In this case, the lab simply wants to use E-Prime to trigger the start of data acquisition. More commonly, labs may want to send event markers.
"and why would you want to keep Biopac and Eprime on the same machine?"
Possibly due to limitations of money or space, or as a matter of convenience, or assuming that that is the ordinary way to do things based on experience or lack of experience. That's all I can think of, I did not ask.
-- David McFarlane
________________________________________
From: e-p...@googlegroups.com <e-p...@googlegroups.com> on behalf of Jacky Kuo <ouky...@gmail.com>
Sent: Friday, October 15, 2021 6:44 PM
To: E-Prime
Subject: Re: E-Prime & BIOPAC on same computer