The alarm duration menu setting can only be set to a recording time that is possible with the current recording rate setting.
In addition, when setting the recording rate, it can only be set within the range allowed by the current alarm duration. For example, if the alarm duration
is set to 3 seconds, the recording rate can only be set to 0.02 seconds or 0.03 seconds.
If a slower recording rate is set, the setting will not be accepted until the alarm duration is changed.
Recording time (Time display on menu screen; s: seconds, m: minutes))