Appendix H - Link Budget Calculation Worksheet - Extech Instruments MO500 Operation Manual

UNIT 4
UNIT 3

Appendix H - Link Budget Calculation Worksheet

Operating Wavelength
Fiber Type
Passive Cable System Attenuation
Fiber Loss at Operating Wavelength (Distance x Fiber Loss)
Total Cable Distance
Individual Fiber Loss (at operating wavelength)
Total Fiber Loss
Connector Loss (Connector Loss x Connector Pairs)
Individual Connector Loss
Number of Connector Pairs
Total Connector Loss
Splice Loss (Splice Loss x Splices)
Individual Splice Loss
Number of Splices
Total Splice Loss
Other Components
Total System Attenuation
(Fiber Loss + Connector Loss + Splice Loss + Other Components)
Calculate Link Loss Budget
Determine System Gain (Avg. Transmitter Power - Receiver Sensitivity)
Avg. Transmitter Power
Receiver Sensitivity
System Gain
Power Penalties (Operating Margin + Receiver Power Penalties + Repair Margin # Splices at 0.3dB each)
Operating Margin
Receiver Power Penalties
Repair Margin
Total Power Penalty
Determine link Loss Budget (System Gain - Power Penalty)
System Gain
Total Power Penalty
Total Link Loss Budget
Verify Performance
Verify Adequate Power (Total Link Loss Budget - Total System Attenuation)
Total Link Loss Budget
Total System Attenuation
System Performance Margin*
* System Performance Margin must be greater
than 0 dB in order for the system to operate
dB
using the specified electronics.
dB
dB
4-9
APPENDICES
APPENDICES
km
dB/km
dB
dB
dBm
dBm @ 10 BER
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
-9
dB
dB
dB