Convenience Features
SCOPE
Sweep Mode
Two sweep modes are available for the scope function as described below.
MANUAL Mode
Touch [ SWEEP ] on the LCD to sweep across the band one time, and display band conditions.
Continuous Sweeping Mode
Touch and hold [ SWEEP ] on the LCD to begin the continuous sweep operation. The spectrum scope will start
sweeping the band segment continuously. While rotating the main dial, you can continuously monitor the band
condition.
To stop sweeping, touch [ SWEEP ] on the LCD again.
FT- 991 Operating Manual
Page 43