AEMC OX 7102 III, User Manual

Page: 175 / 226

Applications
SCOPIX IX - 175
Applications (cont’d)
6. Manual measurement
of phase
•
Select manual phase measurement via the menu:
Measure Manual phase measurement (see §. Measure Menu).
∗
The 2 cursors (1 and 2) of the manual measurements are displayed on
the reference trace. A " ϕ " cursor in relation to which the phase
is measured is displayed.
∗ The phase measurement (in °) is indicated under the display of the
curve(s).
Example
: (1)Ph = 150.0°
Reminder
•
The 3 measurement cursors are present if at least one trace is present
on the screen.
•
The 3 measurement cursors can be moved directly on the screen
by using the stylus. They can also be moved using the stylus by
selecting 1 (cursor 1) or 2 (cursor 2) in the bargraph in the
status zone.
•
If the unattached cursors option is not activated (see §. Unattached
cursors), the cursors (1 and 2) will remain linked to the trace when moved.
If the option is active, these cursors can be moved as required on the
screen.
In all cases, the symbol "
ϕ " can be moved freely.
7. Display of a TV video
signal
This example illustrates the TV synchronization functions.
- The parameters in the TV menu (Trigger Parameters menu) for
displaying a TV signal only apply to the CH1 input.
- it is recommended to use a 75
Ω
adapter for observing a video signal.
• Use a
Probix
HX0031 adapter to inject on CH1 a composite TV signal with
the following characteristics:
-
625 lines
-
positive modulation
-
vertical grey scale stripes
• In the Trigger Parameters menu, select the tab:
Trig. Menu Parameter TV:
• Set the standard number of lines: 625 lines
-
polarity: +
-
line: 25 (for a video signal)
- front: + (or using the key
opposite).
• Adjust the CH1 coupling:
Vert Menu CH1 Sensitivity/coupling DC
or by pressing the AC/DC GND key.
• Adjust the CH1 sensitivity:
Vert Menu CH1 Sensitivity/coupling 200 Mv/div.
or using the keys
opposite.
• Adjust the scan speed:
using the scrollbar in the time base window: 20 µs/div.
or using the keys
opposite.
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