Rohde & Schwarz RTM20 Series, User Manual, Page: 38 / 499

Acquisition and Waveform Setup
R&S
®
RTM20xx
23 User Manual 1317.4726.02 ─ 01
POSITION .....................................................................................................................23
SCALE ..........................................................................................................................23
POSITION
The rotary knob changes the trigger offset. This is the horizontal position of the trigger
point in relation to the reference point - the zero point of the grid. Thus, you can set the
trigger point even outside the diagram and analyze the signal some time before or after
the trigger.
The reference point is set with SETUP >"Time Reference".
Turn clockwise to move the trigger point to the right. At zero-crossing, the knob shortly
snaps in and the setting is kept constant to simplify the zero-setting. The current trigger
position is shown in the top information bar, denoted by "T". Press the knob to reset the
trigger offset to 0.
Note: If a zoom or FFT window is displayed, the knob can adjust other values depending
on the selection of the SCALE rotary knob.
See also:
​
"Time Reference" on page 235
Remote command:
​
TIMebase:
​
POSition
​
on page 284
SCALE
The rotary knob adjusts the time scale of the horizontal axis for all signals, also known
as time base. The current scale value is shown in the top information bar, denoted by
"TB". Turn clockwise to stretch the waveforms - the scale value time/div decreases.
If a Zoom or FFT window is displayed, press the knob to switch between the settings,
then turn to adjust the selected value.
Remote command:
​
TIMebase:
​
SCALe
​
on page 283
2.3.2 Acquisition Menu
The ACQUISITION key in the HORIZONTAL functional block opens the "Acquisition"
menu, where you select the acquisition mode. Acquisition modes control the data pro-
cessing - how the waveform is built from the captured ADC samples. The current acqui-
sition mode is shown in the top information bar, the second value from right.
The settings are placed on two menu pages.
Reference for Waveform Setup