In order to observe simultaneously two signals, it is necessary to apply a voltage on each of the vertical entries. Dual trace oscilloscope has two sets of vertical controls: a group for the channel A or channel 1 (CH1) and a group for the channel B or channel 2 (CH2).
Each group controls one of the screen signals (amplitude, upright, etc.). Are generally equal. Each channel has:
- Vertical entry;
Vertical gain selector switch (D/Div);
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