View
255
Download
3
Category
Tags:
Preview:
Citation preview
Oscilloscope
Sweep generator
t
TIME/DIVSweep
Trigger Fault
Trigger Fault
Trigger
Sawtooth
Trigger generation
Trigger
Sawtooth
Positive trigger level
Trigger
Sawtooth
Negative trigger level
Trigger
Sawtooth
Part of the signal: less than one period
Hold-on time
Trigger
Sawtooth
Part of the signal: more than one period
Dual Trace oscilloscope
• Use a single-beam (one electron gun) .• Time-multiplex the inputs.
– Chop mode or Alternate mode.• Chopped mode: during the same sweep
period, alternate between the two input signals. (better for slow sweep, i.e. high period)
• Alternate mode: one sweep period for each signal. ( better for fast sweep, i.e. low period)
X-Y mode
X
Y
Vy =A sin(𝝎 t)Vx =A sin (𝝎 t+θ)
Recommended