Magni MM-410, Operator'S Manual, Page: 99 / 182

Viewing Waveforms, Vectors, and Pictures
7-27
Figure 7-27. Picture Guard Locations
Picture Reference While External Reference is On
The picture is normally referenced to itself when displayed, even if the MM-410/AVM-510A is set to
REFERENCE (EXT). This prevents the picture from shifting up and down, left and right, if the timing
of the external sync is different from the displayed signal.
When the MM-410/AVM-510A is internally referenced (Ext Ref LED off), the locking source for the
waveform, vector, or picture is the signal itself.
When the MM-410/AVM-510A is externally referenced (Ext Ref LED on), the waveforms and
vectors are locked on to the signal coming in from the Ext Ref connector at the rear panel.
If you want to look at the picture and have it referenced to itself (so all the colors are correct) or if you
want to see the picture locked to the external reference (where changes in the hue and in the horizontal
and vertical position tells you something about the relative timing), you can view the picture either
way. The picture reference can follow the Ext Ref LED, or it can remain locked to internal.
To change the picture to external sync:
1. Press the
Config
button.
2. Select PICT. REF and then press the
Enter
button.
3. Press the
Enter
button to change between INT (the picture will always be reference to itself) and
REF [the picture reference is determined by the state of REFERENCE (EXT)]. Select REF.
4. Press Clr Mnu to exit.
The reference for the picture now follows the main reference, whether its internal or external. The
menu line just below this reference is the same one you change when you press the
Blue
(2nd) button
and then the 2 Field button.
NOTE: When a vector is displayed with a picture, the vector reference is the same as the
picture reference, regardless of the setting of REFERENCE (EXT). The Ext Ref LED
lights when EXT REF is selected.