Philips PM3350A - Page 90

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4 APPLICATIONS
AUTO ZOOM
In this mode it is possible to simulate the operation of a delay time-base function
by displaying a main time-base signal and a delayed time-base signal together
on the screen.
The main time-base signal Is stored in one of the register memories. First select
one of the register memories by pressing the MEMORY and REGISTERS softkeys
(see page 4-44). Now load the signal to be examined into the selected register
memory and display this on the screen. Move the live signal away from the
stored signal by use of the channel position control.
When AUTO ZOOM is activated, the MAIN CURSORS are set on the stored signal
and the LOCATE CURSORS on the live signal. These cursors indicate the part of
the signal that is displayed in more detail and can be shifted across the screen
or the time-base can be expanded up or down by means of the softkeys. When
the distance between the LOCATE CURSORS is less than 3 divisions or more
than 9 divisions, then the time-base is automatically set to a more suitable
setting {if possible). The result is that the live signal shows the adapted situation.
This mode is not active if the signal memory is locked.
4.3 MENUS AND MEASUREMENTS