Set a control bit associated with the selected pulse. This bit controls the TTL-compatible C-BIT output on the front panel of the corresponding output channel. It can be used to control some external devices.
If the control bit is set, the title of this menu item changes to RESET CONTROL BIT. The horizontal part of the affected pulse will be displayed in grey.
Setting one or more control bits is another way of generating a trigger pulse, especially useful in Matrix mode with even/odd frame inversion (to trigger the scope on either frame, not both).
You may set the control bit in a selection of pulses at once.