Rohde & Schwarz RTM20 Series, Руководство пользователя, Страница: 42 / 499

Acquisition and Waveform Setup
R&S
®
RTM20xx
27 User Manual 1317.4726.02 ─ 01
Interpolation
Selects the interpolation method if the real time sample mode needs interpolation.
"Sin (x)/x" Two adjacent ADC sample points are connected by a sin(x)/x curve,
and also the adjoining sample points are considered by this curve. The
interpolated points are located on the resulting curve. This interpolation
method is the default method. It is very precise and shows the best
signal curve.
"Linear" Two adjacent ADC sample points are connected by a straight line, the
interpolated points are located on the line. You see a polygonal wave-
form similar to the real signal, and also the ADC sample points as ver-
texes.
"Sample &
Hold"
The ADC sample points are displayed like a histogram. For each sam-
ple interval, the voltage is taken from the sample point and considered
as constant, and the intervals are connected with vertical lines. Thus,
you see the discrete values of the ADC.
Remote command:
​
ACQuire:
​
INTerpolate
​
on page 285
2.3.3 Vertical Settings
To adjust the vertical settings, you use the keys and rotary knobs in the VERTICAL func-
tional block of the front panel and the channel-specific softkey menu.
2.3.3.1 VERTICAL Controls
REF functions are described in
​
chapter 5, "Reference Waveforms" , on page 74. MATH
functions are described in
​
chapter 7, "Mathematics" , on page 98.
CH N .............................................................................................................................28
SIGNAL OFF .................................................................................................................28
POSITION / OFFSET ....................................................................................................28
Reference for Waveform Setup