218
Digital Signal Analysis
For quantized I/Q values, the peak value is output in discrete form
only since no averaging is performed in the calculation. The rms
modulation error can be calculated within the limit values specified
in the following table. The limit values are obtained for quantized
I/Q values:
Order
MER
RMS
MER
PK
MER
PK
MER
dB
of QAM
min
min
min
max
4
0.5 %
1.563 %
98.44 %
46 dB
16
0.5 %
1.398 %
43.32 %
46 dB
32
0.7 %
1.976 %
29.33 %
43 dB
64
0.5 %
1.364 %
20.46 %
46 dB
128
0.7 %
1.952 %
13.66 %
43 dB
256
0.5 %
1.356 %
9.471 %
46 dB
The term “Modulation Error Ratio” and the prescribed method of
calculation were declared an international standard by the DVB
Measurement Group.
Summary of Contents for AMM-806
Page 86: ...79 TVCB PC Installation ...
Page 93: ...86 SMI Installation Torque Patterns 1 Start Here 2 3 4 5 6 1 Start Here 2 3 4 4 PORT 8 PORT ...
Page 125: ...118 Fiber Optics Fiber Loss vs Path Length Single Mode 1550 nm ...
Page 156: ...149 Cable TV Channel Format NTSC NTSC Composite Video Waveform ...
Page 157: ...150 US Frequency Spectrum ...
Page 158: ...151 FCC Aeronautical Band Frequencies Used for Communication and Navigation ...
Page 175: ...168 Common CATV Symbols ...
Page 176: ...169 Common CATV Symbols ...
Page 177: ...170 Digital L Band Distribution Symbols ...
Page 178: ...171 Digital L Band Distribution Symbols ...
Page 183: ...176 Typical Cable Attenuation Chart in dB 100 Feet 68 F 20 C ...
Page 187: ...180 Echo Rating Graph ...
Page 188: ...181 Signal to Interference Limits Non Coherent Carriers ...
Page 190: ...183 Heterodyne Modulator Analog ...
Page 191: ...184 Heterodyne Processor Analog ...
Page 213: ...206 Multiplexers ...
Page 285: ...Rev 8 0 ...