Promax OD-603 Manual page 77

Then the wave is displayed in the screen, shown as Figure 72.
Figure 72. Autoscale Horizontal-Vertical multi-period waveforms.
NOTE:
Entering into Autoscale function and the symbol
the top left of the screen every 0.5 second.
In the mode of Autoscale, the oscilloscope can self-estimate "Trigger Type"
and "Mode" (Edge, Video). At this point, the trigger menu is not available.
At the mode of XY and STOP status, pressing Autoscale to enter into
Autoscale, DSO switches to YT mode and AUTO triggering.
At the mode of Autoscale, DSO is always set as DC coupling with AUTO
triggering. In this case, making Triggering or Coupling settings have no
effect.
At the mode of Autoscale, if adjust the vertical position, voltage division,
trigger level or time scale of CH1 or CH2, the oscilloscope will turn off
Autoscale function. To back to Autoscale, press Autoscale.
Turn off the submenu at the Autoscale menu, the Autoscale is off and turn
on the submenu still enters into the function.
When video triggering, the horizontal time scale is 50us. If one channel is
showing edge signal, the other channel is showing video one, the time
scale refers to 50us as video one as standard.
While the Autoscale is working, settings below will be made forcibly:
The DSO will switch from non-main time base to main time base status.
The DSO will switch to Peak detection mode if it is in Average mode.
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,A will be flickering on
June 2016