Motorola APEX1000 Installation And Operation Manual page 302

Parameter
Annex B DC II 256 QAM
Annex A DVB
Annex C
QAM carriers per output
Output level adjustment range
Output level step size
Output impedance
Output return loss
QAM constellations
QAM FEC encoding modes
MER equalized
1 kHz to 10 kHz
10 kHz to 50 kHz
50 kHz to 3 MHz
Appendix A • Specifications
APEX1000 All-Purpose Edge QAM Software Version 2.4.x • Installation and Operation Manual
573408-001-a
Specification
5.360537 Msym/sec
0.8 to 6.98 Msym/sec
0.8 to 5.31 Msym/sec
Six outputs, each RF output contains up to eight adjacent QAM
channels.
Channels
1
2
4
6
8
0.5 dB
75 Ohms
•
>14 dB within an active output channel block anywhere within
57 MHz to 750 MHz
•
>13 dB within an active output channel block anywhere within
750 MHz to 870 MHz
•
>12 dB within an active output channel, from 870 MHz to 1002
MHz
•
>12 dB in every inactive channel from 54 MHz to 870 MHz
•
>10 dB in every inactive channel from 870 MHz to 1002 MHz
64 QAM or 256 QAM
ITU T J.83 Annex A, B
Both Annex A and B are supported; Annex A is supported with
the following constraints):
•
81 – 1003 MHz frequency range
•
8 MHz channel width (fixed)
•
6.952 Msps symbol rate (fixed)
> 43 dB
< –35 dBc
< –54 dBc
< –56 dBc
RF Level Range [nominal]
(dBmV/Channel)
52 – 63 [60]
48 – 59 [56]
44 – 55 [52]
42 – 53 [50]
41 – 52 [49]
B
284