228 Chapter 21
ISDB-T Measurement Application
N6155A, ISDB-T/TSB Measurement Application
Out of Band Filtering On or Off
Data Equalization On or Off
Description Specifications Supplemental Information
Modulation Analysis
Measurements
I/Q Measured Polar Graph Constellation (subcarriers 0 to
5616 configurable for 8K FFT)
MER (dB), EVM (%),Mag Error
(%), Phase Error (deg) RMS, Peak
results (Peak Position)
Freq Error (Hz)
Start and Stop subcarriers can be
manually configured
I/Q Error (Quad View) MER vs Subcarriers
Constellation: Layer A/B/C,
Segment (0-12 for ISDB-T) or All
Segments
MER (dB), EVM (%), Amp Error
(%), Phase Error(deg) RMS, Peak
results
Quadrature Error (deg)
Amplitude Imbalance (dB)
In this View, you can measure:
MER vs Subcarriers
MER by Segment
MER by Layer
Constellation by Segment
Constellation by Layer
Channel Frequency Response Amplitude vs Subcarriers
Phase vs Subcarriers
Group Delay vs Subcarriers
Channel Impulse Response
Spectrum Flatness Amax-Ac (Limit: +0.5)
Amin-Ac (Limit: -0.5)
Amax: max amplitude value
Amin: min amplitude value
Ac: center frequency amp value
Description Specifications Supplemental Information