NB-IoT NPRACH Measurement
R&S
®
CMW-KM300/-KS300
340
User Manual 1178.5689.02 ─ 06
●
Frequency error: offset between the measured carrier frequency and the nominal
RF frequency of the measured radio channel
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Timing error: Difference between the actual timing and the expected timing. The
timing error measurement requires an "external" trigger signal to derive the expec-
ted timing.
Suitable trigger signals are, for example, the NPRACH trigger signal provided by
the signaling application or an external trigger fed in via the rear panel.
The unit T
s
stands for the basic time unit, see
Chapter 4.2.6, "NB-IoT Preamble
●
TX power: received power, RMS averaged over all samples within the preamble
duration
●
Peak power: peak power of all samples within the preamble duration
For additional information, refer to
Chapter 4.3.2.9, "Common View Elements"
For query of the table contents via remote control, see
surement" Results (Single Values)"
4.3.2.7
Selecting and Modifying Views
Press the "Display" softkey to show hotkeys for view configuration. They change the
appearance and contents of the active view. The following hotkeys are available at the
bottom of the GUI:
Hotkey
Description
"Select View ..."
Switch to a certain detailed view or overview.
Alternatively, select a diagram in the overview and press [ENTER] or the
rotary knob.
"Select Trace ..."
Select the trace types to be displayed in the view.
"X Scale... / Y Scale..."
Modify the ranges of the X-axis and the Y-axis.
Additional options are available in the "Measurement Control" section of the configura-
tion dialog.
4.3.2.8
Using Markers
Press the "Marker" softkey to show hotkeys for marker configuration. They activate
markers and modify their position. The following hotkeys are available at the bottom of
the GUI:
GUI Reference
深圳德标仪器
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