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Support   m-pod    m-pod for Biopac STP100C

Summary

m-pod for Biopac STP100C plugs to the 37-pin Digital I/O Port connector on the STP100C module via an included blue ribbon cable. This document describes the signals that m-podmakes available to STP100C.

Please note that the STP100C also has a DB25 connector but it is not compatible with the DB25 connector on the MP35 and MP36. Connecting “m-pod for Biopac MP36” to the STP100C will not work.

Setting Up AcqKnowledge

Setting up AcqKnowledge to work with m-pod is straightforward. The screen snapshots below were taken using AcqKnowledge 4.2.

1.

Click on the MP150 menu and choose Set Up Channels….

2.

The “Input channels setup” dialog appears. Click on the Digital tab.

3.

For channels D8 to D15, enable all checkboxes for each of the Acquire, Plot, and Value columns.

4.

Optionally, you can also rename the labels.

Close the “Input channels setup” dialog and click on “Start”.

Default Output Signals

The channel number in the table is as seen in the AcqKnowledge software. Ground is on DB37 connector pins 19 and 21.

When Connected to a Riponda or RB-x40 Response Pad

Trigger Value

For

D8

USB bit 0

Key press 1

OR

D9

USB bit 1

Key press 2

OR

D10

USB bit 2

Key press 3

OR

D11

USB bit 3

Key press 4

OR

D12

USB bit 4

Key press 5

OR

D13

USB bit 5

Key press 6

OR

D14

USB bit 6

Key press 7

OR

D15

USB bit 7

Key press 8

Light sensor

OR

OR

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

Trigger Value

For

Notes

D8

USB bit 0

Light sensor 4

Quad model only

OR

D9

USB bit 1

Light sensor 3

Quad model only

OR

D10

USB bit 2

Light sensor 2

OR

D11

USB bit 3

Voice key / mic

Quad model only

OR

D12

USB bit 4

Any participant key press

OR

D13

USB bit 5

Audio – left

OR

D14

USB bit 6

Audio – right

OR

D15

USB bit 7

Light sensor 1

OR

Customizing The Output Signals

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.

Screenshot of dialog that allows editing of m-pod signal mapping in Xidon.

Last Revision: June 27, 2018

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