Cambium Networks PTP 820S, Technical Description, Page: 192 / 208

Chapter 7: Specifications Networking Specifications
ACM
Working
Point
Modulation
Latency (usec) with GE Interface
Frame Size 64 128 256 512 1024 1518
4
64 QAM
90 95 106 125 165 203
5
128 QAM
84 89 98 115 149 183
6 256 QAM 92 95 104 119 151 181
7 512 QAM 99 103 111 125 155 184
8
1024 QAM
(strong FEC)
92 95 103 117 145 173
9
1024 QAM
(light FEC)
93 96 104 117 145 171
10 2048 QAM 88 91 99 111 137 162
Latency – 40 MHz Channel Bandwidth
Table 57 Latency for 40MHz Channel Bandwidth
ACM
Working
Point Modulation
Latency (usec) with GE Interface
Frame Size 64 128 256 512 1024 1518
0
QPSK
113 123 144 185 266 346
1 8 PSK 96 103 118 147 205 262
2
16 QAM
81 86 98 120 166 210
3
32 QAM
78 83 92 111 148 184
4
64 QAM
75 79 87 103 135 166
5 128 QAM 71 74 82 96 124 151
6 256 QAM 60 63 71 84 111 137
7 512 QAM 72 75 82 95 120 145
8
1024 QAM
(strong FEC)
73 76 82 94 117 141
9
1024 QAM
(light FEC)
75 78 84 95 118 140
10 2048 QAM 70 72 78 89 111 132
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