PTP SOLUTIONS GUIDE
6
pTp 400 Series Bridges –
Aggregate Ethernet Throughput Rates
The equipment capability of the PTP 400 Series system is given in Tables 1 and 2. These tables provide the
Ethernet throughput rate versus link loss for the 5.4 GHz versions of the PTP 400 Series and the PTP 400
Series Lite bridges in both high-throughput and low-latency modes. The link loss is the total attenuation of
the wireless signal between the two point-to-point radios. Adaptive modulation ensures that the highest
throughput that can be achieved instantaneously will be obtained taking propagation and interference
into account. When the link has been installed, the Status Page on the management interface provides
information about the link loss currently measured by the equipment – both instantaneously and averaged.
The averaged value will require maximum seasonal fading to be added, and then the radio reliability of the
link can be computed.
Table 1:
5.4 GHz pTp 400 Series Bridges
Table :
5.4 GHz pTp 400 Series Lite Bridges
1 These data rates are reduced when AES or ARQ is enabled.
2 AMOD link margin of 1.5 dB applied.
5.4 GHz
Max
Path
Budget
(dB)
2
Aggregate Ethernet Throughput Rate (Mbps)
1
Hi
= High Throughput Mode
Lo
= Low Latency Mode
0-5km
0-40km
0-100km
0-200km
Hi
Lo
Hi
Lo
Hi
Lo
Hi
Lo
64QAM
7
/
8
21.3
19.8
19.7
17.3
17.6
14.3
14.9
11.0
139.8
64QAM
3
/
4
18.2
17.0
16.9
14.9
15.1
12.2
12.8
9.4
142.5
64QAM
2
/
3
16.2
15.1
15.0
13.2
13.4
10.9
11.3
8.4
144.3
16QAM
3
/
4
12.1
11.3
11.3
9.9
10.1
8.2
8.5
6.3
150.9
16QAM
1
/
2
8.1
7.6
7.5
6.6
6.7
5.4
5.7
4.2
153.5
QPSK
2
/
3
5.4
5.0
5.0
4.4
4.5
3.6
3.8
2.8
160.3
QPSK
1
/
2
4.1
3.8
3.8
3.3
3.4
2.7
2.8
2.1
162.8
BPSK
1
/
2
1.8
1.7
1.7
1.5
1.5
1.2
1.3
0.9
168.6
5.4 GHz
Max
Path
Budget
(dB)
2
Aggregate Ethernet Throughput Rate (Mbps)
1
Hi
= High Throughput Mode
Lo
= Low Latency Mode
0-5km
0-40km
0-100km
0-200km
Hi
Lo
Hi
Lo
Hi
Lo
Hi
Lo
64QAM
7
/
8
42.5
39.7
39.5
34.7
35.2
28.5
29.8
22.0
139.8
64QAM
3
/
4
36.4
34.0
33.8
29.7
30.2
24.5
25.5
18.9
142.5
64QAM
2
/
3
32.4
30.2
30.1
26.4
26.8
21.8
22.7
16.8
144.3
16QAM
3
/
4
24.3
22.7
22.6
19.8
20.1
16.3
17.0
12.6
150.9
16QAM
1
/
2
16.2
15.1
15.0
13.2
13.4
10.9
11.3
8.4
153.5
QPSK
2
/
3
10.8
10.1
10.0
8.81
8.93
7.25
7.56
5.6
160.3
QPSK
1
/
2
8.1
7.55
7.52
6.61
6.7
5.44
5.67
4.2
162.8
BPSK
1
/
2
3.6
3.36
3.34
2.94
2.98
2.42
2.52
1.87
168.6
