Metrix DOX 2 Series, Руководство пользователя

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10 Kit Demo for METRIX Oscilloscopes
Demo: with:
DOX2025 DOX2040 DOX2100 DOX2xxx
Test Signal no. 4: Data+CS train
Nature 2 signals representing a digital frame (data) and a CS (chip select)
Specs Vpp

3.4V-F

40kHz (data)-F

1.5kHz (CS)
Oscilloscope Settings 100µs/div.-MAIN = 1 V/div.-AUX = 1 V/div.
Trigger on BNC AUX = CH2
Modes Triggered mode preferable
Objectives
Triggering on pulses
a) Adjust the oscilloscope to display simply the 2 signals (time base, sensitivities and triggering source on the
BNC AUX = CH2).
Attention, with this type of signal, "Autoset" operation may be aleatory.
b) We are now going to demonstrate the utility of the pulse width triggers.
The example chosen will serve to synchronize to the chip select signal of the data frame.
We are going to trigger by turns on the width of the high level, then of the low level, of the "positive" pulse. In
the first case, triggering will be on the negative-going edge of the chip select and in the second case it will be
on the positive-going edge.