m-pod for Parallel Port offers 13 bits of output.
The parallel port, also known as LPT port, has largely disappeared from all Windows-based laptops and nearly all desktop PCs. We offer compatibility with this venerable port because a number of EEG recording systems use a trigger port that is pin-compatible with a PC parallel port.
Although m-pod for Parallel Port delivers 13 bits of output, many recording devices accept only 8 bits. Check your documentation or ask the manufacturer.
When Connected to Riponda or an RB-x40 Response Pad
Bit Number
For
Bit 0 (Least Significant Bit)
Key press 1
Bit 1
Key press 2
Bit 2
Key press 3
Bit 3
Key press 4
Bit 4
Key press 5
Bit 5
Key press 6
Bit 6
Key press 7
Bit 7
Key press 8 OR light sensor
Bit 8
USB bit 0
Bit 9
USB bit 1
Bit 10
USB bit 2
Bit 11
USB bit 3
Bit 12
USB bit 4
Note:
When used with a Lumina 3G controller, the same info applies, with the difference that key presses 5 through 8 correspond to keys 1 through 4 on “Response Pad 2”.
When Connected to StimTracker
Bit Number
For
Notes
Bit 0 (Least Significant Bit)
Light sensor 4
Quad model only
Bit 1
Light sensor 3
Quad model only
Bit 2
Light sensor 2
Bit 3
Voice key / mic
Quad model only
Bit 4
Any participant key press
Bit 5
Audio – left
Bit 6
Audio – right
Bit 7
Light sensor 1
Bit 8
USB bit 0
Bit 9
USB bit 1
Bit 10
USB bit 2
Bit 11
USB bit 3
Bit 12
USB bit 4
m-pod contains a powerful microprocessor that can reassign any input signal to any output line, and without any significant delay. It can also assign multiple signals to the same output line.
The tables above describe the factory default. If your experiment or lab setup requires different output, Cedrus provides a free utility for configuring your m-pod. After you use it, your configuration is saved to flash memory so that it’s remembered even after you power off m-pod.
See this forum post for a description of the physical pin assignments.
Last Revision: Aug 10, 2023
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