Anritsu 3GPP, Measurement Manual

Page: 165 / 244

TD-LTE Signal Analyzer 6-4 TD-LTE Modulation Measurements
3GPP MG PN: 10580-00234 Rev. Y 6-13
Markers
1. While in the Power vs Resource Block measurement, press the
Marker
main menu key.
The
RB Marker
submenu opens. The
Marker State
button default value is
On
, so the
markers highlight a row of sub-frames and a column of sub-carriers.
2. To immediately find the strongest resource block, press the
Peak Search
key.
3. To choose a specific RB, press the
Marker RB #
submenu key and move it to the desired
RB# using the arrow buttons or rotary knob, or enter the RB number and press
Enter
.
4. To select a sub-frame, press
Marker Sub-frame
and move it to the desired sub-frame
using the arrow buttons, rotary knob, or enter the sub-frame number and press
Enter
.
Constellation
1. Press the
Measurements
main menu key.
2. Press the
Modulation
submenu key.
3. Press the
Constellation
submenu key to activate the Constellation measurement view.
4. Press the
Constellation
key again to display the Constellation menu and enable or
disable the reference constellation points and the data legend (see Figure 6-8 ).
a. Press the
Reference Points
submenu key to turn the reference points on or off.
b. Press the
Data Legend
submenu key to turn the data legend on or off.
5. Press the
Back
submenu key to return to the Modulation menu.
Figure 6-8. Constellation Measurement View
Note
Support for 256-QAM modulation as shown in the data legend above is available
only with Option 886.