Philips PM3350A - Page 72

4 APPLICATIONS 4 - 39
ZOOM menu
This menu Is used to magnify a part of the signal while the sample resolution
stays unchanged. This is only possible if the instrument is out of the LOCK mode
because a new signal acquisition is necessary with adapted time-base and TRIG
DELay setting. The possible softkey selections are:
- RESTART expands the part of the waveform between the MAIN cursors. This
part can then be examined in more detail.
- REVERSE resets the instrument to the situation immediately before the
RESTART command and then resamples the signal. This function is only
available after use of the RESTART function.
. CENTER replaces the MAIN cursors horizontally to -i-2 div and -2 div of the
screen centre after which the RESTART can be used again.
- AUTOZOOM accesses the menu where the cursors can be shifted both to the
left, away from each other, towards each other or both to the right. When
shifting the cursors an automatic RESTART is made when the time between
the cursors is suitable for another time-base and/or TRIG DEL setting to be
used.
t.3 MENUS AND MEASUREMENTS