Kenwood TS-990S Operation Manual - Page 172

8 AUDIO SCOPE CHANGING THE AUDIO SCOPE FREQUENCY DISPLAY SPAN The displayed frequency span for the audio scope can be toggled between 3 kHz and 8 kHz. You can configure the frequency display span following the configuration for the filter bandwidth or the frequency to be observed. CHANGING THE LEVEL OF THE OSCILLOSCOPE The amplitude of the waveform will change if the signal level applied to the oscilloscope is changed. Optimizing the amplitude of the waveform into an easy-to-see size will make it easy to observe the waveform. 1 Press [RF/AF] (F2) on the Bandscope screen to open the Audio Scope screen. 2 Press [LEVEL] (F7) to change the signal input level • Each time you press [ATT] (F3), the level cycles through dB > -10 dB > -20 dB > -30 dB > 0 dB. The audio signal level applied to the oscilloscope appears on the upper left side of the grid. The default is "0 dB". • Each long press of [LEVEL] (F7) cycles the signal level in the reversed sequence. 1 Press [RF/AF] (F1) on the Bandscope screen to open the Audio Scope screen. If [RF/AF] (F2) is unavailable in the key guide for function keys, press [MORE] (F1) to alternate the key guide. 2 Press [SPAN] (F4) to select the frequency display span. • Each time you press [SPAN] (F4), the frequency toggles between 3 kHz and 8 kHz. • With the frequency display span of 3 kHz, the frequency step size will be 0.5 kHz and the audio scope will appear with six frequency steps in the horizontal direction. • With the frequency display span of 8 kHz, the frequency step size will be 1 kHz and the audio scope will appear with eight frequency steps in the horizontal direction. • The default is "3 kHz". 8-2 Index Contents