Multichannel Systems MEA1060-Up-BC Manual - Manual (Page 21)

First Tests and Tutorial
21
To start and stop only the channels associated with one amplifier, use the Start / Stop buttons
for individual triggers. Each button controls one trigger and hence all assigned channels. The
orange LED indicates ongoing stimulation. In our example, the configuration shown below
would mean that amplifiers A, B and D are receiving a stimulation signal, while stimulation for
amplifier C is stopped.
Triggers 5 to 8 have no function in this example. You could download a new paradigm for
amplifier D by downloading channels 5 and 6 and Sync Out 3, and then start it with the start
button of Trigger 3. This would not interfere with the ongoing stimulation to the other three
amplifiers, but only if the Independent Channel Download function is activated. If the STG
is in default download mode, any download will stop all ongoing stimulation and empty the
memory of the STG. See chapter “Downloading Stimulus Files” for more information.
Data acquisition with MC_Rack
1. Start MC_Rack.
2. Open the demo rack file MEA1060BC_demo.rck on the installation volume. It is a simple rack
with only a Trigger Detector, one continuous and one triggered Data Display. You will need
a trigger for stimulation and blanking, and for triggering the triggered display.
3. Bring the continuous display to front.
4. Start the recording by clicking Start.
Operating the MEA amplifier with blanking circuit
 Start MEA_Select.
On the left, you see the MEA layout button array. Here, you can select any electrodes for
stimulation or connect them to ground. The default state of all electrodes is selected for
Recording = Not Stim.. This is indicated by the neutral grey background of the electrode buttons.
Accordingly, you will see the standard noise level on all channels in the continuous display in the
MC_Rack program. The triggered display is still empty, because you have not started triggering
the stimulation and the MC_Card yet.
Grounding electrodes
You can connect any electrode to ground. Usually, you will ground defective electrodes.
Now, we are trying out this feature even if it makes no sense with the MEA test model probe.