Multichannel Systems MC_Rack Manual - Manual (Page 185)

Troubleshooting
179
6.3 Data is not Written to Hard Disk
You started the recording by pressing the Start button. You see the recorded data in the
MC_Rack displays, but no data is written to the hard disk.
Possible causes:
? The red Record button was not pressed in. MC_Rack was designed like a tape deck. You can start
and stop the recording without writing data to the hard disk, for example, if you want to do some
test recordings, or if you want to wait until the activity of the brain slice has reached the baseline
level. Data files are generated only when the red Record button is activated.
1. Stop the recording.
2. Make sure the red Record button is pressed in and start the recording again.
? The hard disk is full. MC_Rack may stop to respond in this case.
 Make a backup copy of the data files on your hard disk, and delete data on the disk until enough
disk space is available before you restart the recording.
 Empty the Recycle Bin of the Windows operating system on a regular basis.
6.4 Channels Not Visible or Available
Analog channels not visible in Data Display
An analog signal is applied to one of the additional analog inputs. You started the recording
by pressing the Start button, but you do not see the analog raw data stream in the display.
Possible causes:
? The Analog Raw data stream was not selected for the display. The display graphs only the data
streams that were assigned to it.
1. In the tree view pane of the virtual rack, select the Data Display.
2. Click the Data tabbed page and select the Analog Raw data stream.
? The selected channel map does not support the analog channel of interest.
Similar to other virtual instruments in MC_Rack, displays do not recognize active channels by
themselves, but you have to set up a channel map for each display separately. A channel map
defines the layout in which the channels of a display appear, that is, information about the
channel numbers and their positions. There are several standard maps provided in the MC_Rack
program folder, for example the 8 x 8 MEA layout, but you can set up and save your own custom
maps as well. That means, to display for example the additional analog channel A2, you need
to set up a channel map that includes channel A2. Channel A1 is already preconfigured in the
standard "8x8mea.cmp" channel map. For more information on how to set up a channel map,
please see Setting Up a Display Layout in the MC_Rack Features section.
? The y-axis range is not suitable for the displayed data.