6. If you load a language other than English, install the plastic overlay on the
front panel to provide labels in that language. Fold the overlay tabs. Push the
overlay over the knobs until the knob hole tabs click over the bottom edges
of the knobs. Insert the overlay tabs into the small slots.
If you are changing from a non English language to English, remove the
front-panel language overlay.
Getting acquainted with the oscilloscope
18 TBS2000B Series Oscilloscopes User Manual