User manual

A-8 Appendix A: Path Evaluation Information
Moseley SL9003Q 602-12016 Revision G
F. Line 7. Enter the total receiver transmission line loss (see Table A-3 above).
G. Line 8. Enter the total connector losses. A nominal figure of -0.5 dB is reasonable
(based on 0.125 dB/mated pair).
H. Line 9. Enter all other miscellaneous losses here. Such losses might include power
dividers, duplexers, diplexers, isolators, isocouplers, and the like. Losses are 1.5 dB per
terminal. These only apply for full duplex systems.
Table 8-4 Branching Losses
System Type TX Loss RX Loss Total Loss
Non-Standby Full Duplex Terminal (400 MHz)
1.2 1.2 2.4
Hot Standby Full Duplex Terminal (400 MHz)
1.2 4.2 5.4
Non-Standby Full Duplex Terminal (900 MHz)
1.5 1.5 3.0
Hot Standby Full Duplex Terminal (900 MHz)
1.5 4.5 6.0
I. Line 10. Enter obstruction losses due to knife-edge obstructions, etc.
J. Line 11. Total lines 5 to 10 and enter here. This is the total loss in the proposed
system.
K. Line 12. Enter the total gain from line 4.
L. Line 13. Enter the total loss from line 11.
M. Line 14. Subtract line 13 from line 12. This is the unfaded signal level to be expected at
the receiver. (Convert from dBm to microvolts here for reference).
N. Line 15. Using the information found in Table A-5 below, enter here the minimum signal
required for 1x10E-4 BER.
Table 8-5 Typical Received Signal Strength required for BER of 1x10E-4*
Data Rate
Configuration
High Sensitivity
16 QAM
High Efficiency
64 QAM
2 Chnl, 1024 kbps
-93 dBm -89 dBm
2 Chnl, 1536 kbps
-91.5 dBm -87.5 dBm
4 Chnl, 1536 kbps
-91.5 dBm -87.5 dBm
4 Chnl, 2048 kbps
-90 dBm -86 dBm
* Excludes all branching losses
O. Line 16. Subtract line 15 from line 14 and enter here. This is the amount of fade margin
in the system.
P. Line 17. Enter the Terrain Factor.