Operator`s manual

Viewing Waveforms, Vectors, and Pictures
7-18
Figure 7-19. PAL Vector Display
Figure 7-20. PAL Vector with +V Switch
Locking the Vector to External Sync
Vector displays can be locked to an internal or external reference. To lock a vector display to the
external sync source, press the Blue button and then press the Field Sel (Ext Ref) button. Repeat
this sequence to go back to the internal reference. When the MM-410/AVM-510A is externally
referenced, the word EXT appears at the top center of the display.
You can also change to the external reference using the menu path of: Config, REFERENCE and then
selecting INT/EXT or using the path of: Config, PICT. REF, and then selecting INT/REF.