User`s guide

Chapter 14 System Function Setting RIGOL
DS1000Z User’s Guide
14-11
Auto Options
As mentioned before, you can press AUTO at the front panel to enable the
waveform autosetting function. The oscilloscope will adjust the vertical scale,
horizontal scale and trigger mode automatically according to the input signal to
acquire the optimum waveform display effect. This oscilloscope allows users to set
the relative parameters of the waveform auto setting function.
Press Utility  Auto Options to enter the Auto setting menu and you can set the
following parameters.
 Press Lock to lock AUTO, namely this key is disabled.
Note: You can only unlock the key using remote command (:SYSTem:AUToscale
1). For the remote command, refer to the
DS1000Z Programming Guide .
 Press Pk.Pk to turn on or off the peak-peak priority function. When it is turned
on, the instrument displays the peak-peak value using the optimum scale. This
function is especially useful when you are observing the varying part of the
signal with offset.
 Press CH to select the channel for the AUTO operation. You can select “OPENed”
(channels currently turned on. If no channel is currently turned on, the AUTO
operation will be performed on all the channels automatically) or “ALL”. The
default is “ALL”.
 Press Menu Hold to turn on or off the menu hold function. When it is turned on,
the menu as shown in
Figure 6-2 will not be displayed after the AUTO operation,
namely the current menu remains unchanged.
 Press Overlay to turn on or off the overlay display function. When it is turned
on and signals are connected to multiple channels, the channels will be
displayed on the screen in overlay mode and each channel occupies 8 grids of
vertical range. At this point, it is easier to get stable trigger as the amplitude
resolution is low. When the function is turned off, the channels will be displayed
on the screen separately and each channel occupies 2 grids of vertical range; at
this point, the trigger might not be stable for the amplitude resolution is high.
 Press Coupling to turn on or off the coupling hold function. When it is turned on,
the coupling setting of the channel in which signal is detected will be held. That
is, if the channel is set to DC coupling, the DC coupling will be held after signal is
detected in the channel; if the channel is set to AC coupling, the AC coupling will
be held after signal is detected in the channel; if the channel is set to GND, DC