Millisecond Forums

Hi,

For a psychophysiology experiment I have to send certain codes through the com port as triggers for the psychophysiology recording program. We recently switched to Inquisit 4 on our testing computer and now we are experiencing problems when we use the code we previously used in inquisit 3 as triggers.

Previously the codes were like this:

***startvpm**

<port A>
/ numitems = 1
/ port = com1
/ subport = data
/ items = ("01000001")
/ select = sequence
/ erase = false
</port>

***start trial ******

<port B>
/ numitems= 1
/ port = com1
/ subport = data
/ items = ("01000010")
/ select = sequence
/ erase = false
</port>

***end trial ******

<port C>
/ numitems= 1
/ port = com1
/ subport = data
/ items = ("01000011")
/ select = sequence
/ erase = false
</port>

****end vpm******

<port D>
/ numitems= 1
/ port = com1
/ subport = data
/ items =< ("01000100")
/ select = sequence
/ erase = false
</port>

***start CSplus ******

<port E>
/ numitems= 1
/ port = com1
/ subport = data
/ items = ("01000101")
/ select = sequence
/ erase = false
</port>

********end CSplus ***********

<port F>
/ numitems= 1
/ port = com1
/ subport = data
/ items = ("01000110")
/ select = sequence
/ erase = false
</port>


The psychophysiology program stubbornly wants specific binary input for specific output triggers (e.g., "01000001" for A), but this mapping apparently changed somehow from Inquisit 3 to 4. Is there any place where I could find documentation to map the appropriate binary codes to the triggers in Inquisit 4? (for now we will probably stick to using Inquisit 3, but it would be nice to use the features of Inquisit 4 in combination with our psychophysiology recording program)

Thank you!

kind regards,
Gaetan