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Idiomas disponibles
Idiomas disponibles
Demo:
with:
Test Signal
Specs
Scope Settings
Trigger
Modes
Purposes
a) Firstly calibrate the Oscilloscope to provide a rough view of the signal (possible using Autoset), then set the
parameters as indicated below.
You will notice that the display is not stable.
Then set up a pulse-width trigger as indicated below, and increase the timebase speed in order to allow
detailed analysis of the fault on the digital frame.
L+ measurement
b) Next you can use a slower timebase, for example 5µs/div in order to observe the general composition of the
digital frame.
Depending on the sampling speed used by the instrument, use of the "Min-Max" mode may be indispensable to
obtain a correct representation of the signal.
Without Min-Max
METRIX Oscilloscope Demo Kit
MTX3x5x SPO
OX 6000
& MTX105x SPO
OX 6000-II
no. 10 : Digital frame + Fault
Type
Digital frame presenting a recurring fault
F square ≈ 5 MHz, Vpp ≈ 1.8 V - L+ fault ≈ 7 ns
25 or 50 ns/div then 5 µs/div - MAIN = 500 mV/div. DC coupling
⇑ DC coupling on MAIN, level ≈ 250 mV
Select "Repetitive signal" (Horiz menu)
Use of pulse-width trigger
Use of "Min-Max" mode on digital frame
Pulse trigger < 20 or 40ns
≈ 7ns
SCOPIX
HANDSCOPE
With Min-Max
Chapter II - 29
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