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8.Demonstration
119
bottom left of the screen (see Figure 8-2).
(11) Calculate the amplifier gain with the following formulas.
Gain = Output Signal / Input signal
Gain (db) = 20×log (gain)
Figure 8-2 Waveform of Gain Measurement
Example 3: Capturing a Single Signal
It's quite easy to use Digital Oscilloscope to capture non-periodic signal, such
as a pulse and burr etc. But the common problem is how to set up a trigger if
you have no knowledge of the signal? For example, if the pulse is the logic
signal of a TTL level, the trigger level should be set to 2 volts and the trigger
edge be set as the rising edge trigger. With various functions supported by our
Oscilloscope, user can solve this problem by taking an easy approach. First to
run your test using auto trigger to find out the closest trigger level and trigger
type, this helps user to make few small adjustments to achieve a proper trigger
level and mode. Here is how we achieve this.
The operation steps are as follows:
(1) Set the probe menu attenuation coefficient to 10X and that of the switch in
the probe to 10X (see "How to Set the Probe Attenuation Coefficient" on
P11).
(2) Push CH1 button to select CH1, turn the lower knob to adjust the vertical
scale. Press the HOR button to make it light, turn the lower knob to adjust
the horizontal scale. Set up a proper vertical and horizontal ranges for the
signal to be observed.
(3) Click to call up the menu panel. Click the Acquire softkey on panel to
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