Elekta Neuromag NM21283A, User Manual

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Troubleshooting 4
NM21283A-A 19
Channels can be locked by two methods:
• by clicking the noise bar in the display using the left mouse button
while pressing the
S
HIFT
key simultaneously.
• By using the “active channels” dialog, which can be popped up by
selecting the menu button Parameters > Active channels .
The “active channels” dialog is shown in Figure 4.1. The upper part of the
dialog contains a check box for each channel. The boxes are labeled with
the number part of the channel names. When the check box is set, tuning
is allowed for this particular channel. You can switch individual channels
by clicking the box and then closing the dialog by pressing
OK button.
Figure 4.1