Motorola PTP 600 Series ユーザーズマニュアル

 

 

49

6.1.4 

Aggregate Ethernet throughput rate v maximum link loss 

The equipment capability is given in Table 7 and Table 8. These tables give the Ethernet 

throughput rate versus link loss for PTP 600 Series Bridge in all modes. Adaptive modulation 

will ensure that the highest throughput that can be achieved instantaneously will be obtained 

taking account of propagation and interference. The calculation of Equation 1 needs to be 

performed to judge whether a particular link can be installed. When the link has been 

installed, web pages provide 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. 

 

 

256QAM 0.81 dual 

300.2 

-61.0 

+18  

126.0 

64QAM 0.92 dual  

252.9 

-63.9 

+18  

128.8 

64QAM 0.75 dual  

206.7 

-68.6 

+18  

133.6 

16QAM 0.87 dual  

160.8 

-71.8 

+20  

138.8 

16QAM 0.63 dual  

115.6 

-77.0 

+22  

146.0 

16QAM 0.63 single  

57.8 

-80.1 

+22  

149.1 

QPSK 0.87 single  

40.2 

-82.4 

+23  

152.4 

QPSK 0.63 single  

28.9 

-85.9 

+24  

156.9 

BPSK 0.63 single  

14.4 

-88.9 

+25  

160.9 

256QAM 0.81 single  

150.1 

-65.4 

+18  

130.4 

64QAM 0.92 single  

126.4 

-67.6 

+18  

132.6 

64QAM 0.75 single  

103.3 

-73.0 

+18  

138.0 

16QAM 0.87 single  

80.4 

-75.9 

+20  

142.9 

                                                      

8

 Aggregate data rate in 40:40 mode for a 1km link length 

9

 Data rates for PTP 600 Series Bridge Lite product are 50% of the figures shown