Benelli TnT1130, Workshop Manual

Page: 378 / 392

UK
378
MF13
INTERNAL SYNCHRONISM:
The waveform on the display is stabilised with a signal generated
by the yxz microprocessor.
The synchronism may be adjustment in size and position
(TRIGGER). To start such adjustment, move to the window with
the letters INT and press ENTER.
The triangles on the V and T axis will blink.
While blinking, triangles (1) and (2) may be positioned on the
required points by using the scroll arrows.
In particular, triangle (1) on the V axis represents the level and
polarity point in which the connection with the internal
synchronism signal will take place.
If the triangle is above the zero line, the signal will be displayed
starting from its positive phase.
If the triangle is below the zero line, the signal will be displayed
starting from its negative phase (see diagram on next page).
The triangle, on the T axis, represents the starting point of the
synchronism in the display. Use the arrow keys to move it left
or right in order to improve the display of the signal by centring
it in the screem.
MANUAL SYNCHRONISM:
To select the Manual sybchronism, select the window with the
MAN letters.
Press ENTER to start measuring of the signal.
Manual trigger offers new diagnostic possibilities. While internal
or external trigger is as set before, actual signal measurement
starts only when the operator presses ENTER.
The acquired image is saved and then show on the display.
To carry out another measurement, press ENTER again.
The second measurement will be placed on top of the previous,
this way the operator may compare the two tests.
Positiv Synchronism
at +3.3 Volt
Negativ Synchronism
at +3.3 Volt
OPTIONS
CH1
EXIT
v
T
DC
AC
MAN
EXT
Va:-10.0mV
Vb:-10.0mV
Dv:0.0
Dt:5mS A
B
INT
SYNC.
TYPE
2
2
4
4
4
6
6
8
8
10 12 14 16 18 T
vo
2
6
8
10
1
MAN
EXT
INT
SYNC.
TYPE
+
-
2
v
T
DC
AC
MAN
EXT
Va:-10.0mV
Vb:-10.0mV
Dv:0.0
Dt:5mS
A
B
INT
8
6
4
CH1
SYNC.
TYPE
OPTIONS