2.10.2 100 BASE FX TRANSMITTER CHARACTERISTICS
Parameter Sym Min. Typ. Max. Unit
Output Optical Power BOL 62.5/125 µm
NA = 0.275 Fibre EOL
PO
-19
-20
-16.8 -14 dBm avg.
Output Optical Power BOL 50/125 µm
NA = 0.20 Fibre EOL
PO
-22.5
-23.5
-20.3 -14 dBm avg.
Optical Extinction Ratio
10
-10
%
dB
Output Optical Power at Logic "0" State PO -45 dBm avg.
Conditions: TA = 0°C to 70°C
2.11
1 PPS PORT
1 PPS port (fibre)
Main Use GPS accuracy clock reference
Connector BFOC 2.5 –(ST®)
Standard IEC 874-10
Fibre type Multimode 50/125 µm or 62.5/125 µm
Wavelength 850 nm
Minimum reception level -28 dBm
Accuracy
Better than +/- 50 ns for maximum absolute error between
actual GPS time and rising edge of 1 PPS signal.
2.12 FIBRE TELEPROTECTION INTERFACE
Fibre Teleprotection Interface
Main Use Teleprotection communications
Connectors (2) BFOC 2.5 –(ST®)
Standard IEC 874-10
Protocol InterMicom 64
Fibre type Multimode 50/125 µm or 62.5/125 µm or single-mode 9/125 µm
Wavelength 850 nm or 1300 nm (multimode), 1300 nm or 1500 nm (single mode)
Minimum reception level -28 dBm
Accuracy
Better than +/- 50 ns for maximum absolute error between actual GPS time and
rising edge of 1 PPS signal.
Optical budget
850nm MM
1300 nm MM 1300 nm SM 1550 nm SM
Minimum transmit output level (average power) -19.8 dBm -6 dBm -6 dBm -6 dBm
Receiver sensitivity (average power) -25.4 dBm -49 dBm -49 dBm -49 dBm
Optical budget 5.6 dB 43 dB 43 dB 43 dB
Less safety margin (3 dB) 2.6 dB 40 dB 40 dB 40 dB
Typical cable loss 2.6 dB/km 0.8 dB/km 0.4 dB/km 0.3 dB/km
Maximum transmission distance 1 km 50 km 100 km 130 km
P543i/P545i Chapter 27 - Technical Specifications
P54x1i-TM-EN-1 721