Waveform setup
R&S
®
RTM3000
51
User Manual 1335.9090.02 ─ 09
The reference point defines which part of the waveform is shown. By default, the refer-
ence point is displayed in the center of the window, and you can move it to the left or
right.
The reference point is the rescaling center of the time scale on the screen. If you mod-
ify the time scale using the [Scale] knob, the reference point remains fixed on the
screen, and the scale is stretched or compressed to both sides of the reference point.
If you spread and pinch two fingers on the touchscreen to change the time scale, then
the reference point is set between the fingers.
Remote command:
Time Scale
Defines the time scale of the horizontal axis for all signals, also known as timebase.
The scaling is indicated in the information bar above the grid.
Remote command:
Horizontal Position
Defines the trigger position, the time distance from the trigger point to the reference
point (trigger offset). The trigger point is the zero point of the diagram. Changing the
horizontal position, you can move the trigger, even outside the screen.
If you want to see a section of the waveform some time before or after the trigger, enter
this time as horizontal position. The requested waveform section is shown around the
reference point. Use positive values to see waveform sections after the trigger - the
waveform and the diagram origin move to the left.
The value is indicated in the information bar above the grid.
Remote command:
5.3
Vertical setup
The controls and parameters of the vertical system adjust the vertical scale and posi-
tion of the waveform, and the waveform display. The probe settings also belong to the
vertical setup.
The channel labels at the bottom of the display show the basic vertical settings: vertical
scale (for example, channel 3 in the figure below: 500 mV/div), coupling (AC), probe
attenuation (10:1), and bandwidth (if limited). Clipping of a waveform is indicated by
orange arrows. The label of the selected channel has a brighter colored line on the top.
Figure 5-1: Channel labels. Channel 3 is selected. Channel 1 waveform is clipped.
Vertical setup