4 modulation 5.5 other specifications – DekTec DTE-3114 IP to 4x QAM User Manual
Page 32
DTE-3114 – Networked Quad QAM Modulator
USER MANUAL
32
5.4 Modulation
Min
Typ
Max
QAM-A
Standard
EN 300 429
DVB-C
Constellations
32/64/128/256-QAM
QAM-B
Standard
ITU-T-J.83 Annex B
USA
Constellations
64/256-QAM
Interleaver modes
All I, J defined in
ITU-T-J.83 1997-04, Table B.2
QAM-C
Standard
ITU-T-J.83 Annex C
Japan
Constellations
32/64/128/256-QAM
Symbol Rate
Range
(6)
4.48
6.9
7.0
MBd
Resolution
1
Bd
MER (equalised)
43
dB
Spectrum flatness (1 channel)
±0.2
dB
Shoulder attenuation
48
dB @ -9dBm output
(6)
This symbol-rate range is supported for all QAM standards, including QAM-B
5.5 Other Specifications
Min
Typ
Max
Power
Auxiliary power supply
20
24
48
V
Power consumption
8
W
Temperature Sensor
Measurement range
-25
-13
+100
+212
°C
°F
Accuracy
±2
°C
Environmental
EMC
CE, FCC
(7)
Hazardous substances
RoHS compliant
Flammability
UL-94 HB
(8)
Ambient temperature
0
+32
+35
+95
°C
°F