15
40 kBd Link
System Performance Under recommended operating conditions unless otherwise specified.
Parameter
Data Rate
Symbol Min. Typ. Max. Units
Conditions
BER ≤ 10-9, PRBS: 27 - 1
Ref.
dc
40
kBd
Link Distance
(Standard Cable)
13
94
41
138
m
m
IFdc = 2 mA
IFdc = 60 mA
Fig. 21
Note 1
Link Distance
(Improved Cable)
15
111
45
154
m
m
IFdc = 2 mA
IFdc = 60 mA
Fig. 22
Note 1
Propagation
Delay
tPLH
tPHL
4
2.5
µs
µs
RL = 3.3 kΩ, CL = 30 pF Fig. 22, 25
PR = -25 dBm, 1 m fiber
Note 2
Pulse Width
tD
7
µs
-39 ≤ PR≤ - 14 dBm
Fig. 23, 24
Distortion tPLH-tPHL
RL = 3.3 kΩ, CL = 30 pF
Notes:
1. Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.
2. The propagation delay for one metre of cable is typically 5 ns.
Figure 20. Typical 40 kBd Interface Circuit.
120
100
80
120
100
80
60
60
40
40
20
20
10
10
6
4
6
4
HFBR-15X3/25X3
HFBR-15X3/25X3
2
1
0°C–70°C
25°C
0°C–70°C
25°C
2
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100 110
– CABLE LENGTH – METRES
– CABLE LENGTH – METRES
Figure 21. Guaranteed System Performance with
Standard Cable.
Figure 22. Guaranteed System Performance with Improved
Cable.
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
