10
1 MBd Link
(High Performance HFBR-15X2/25X2, Standard HFBR-15X4/25X4)
System Performance Under recommended operating conditions unless otherwise specified.
Parameter Symbol Min. Typ. Max. Units Conditions
Data Rate
MBd BER ≤ 10-9, PRBS:27-1
Ref.
High
dc
1
Performance
1 MBd
Link Distance
(Standard Cable)
39
47
m
m
IFdc = 60 mA
IFdc = 60 mA, 25°C
Fig. 14
Notes 1,
3, 4
Fig. 15
Notes 1,
3, 4
70
78
Link Distance
(Improved Cable)
45
56
m
m
IFdc = 60 mA
IFdc = 60 mA, 25°C
Propagation
Delay
tPLH
tPHL
180 250
100 140
ns
ns
RL = 560 Ω, CL = 30 pF Fig. 16, 18
I = 0.5 metre
PR = -24 dBm
Notes 2, 4
Pulse Width
Distortion tPLH-tPHL
tD
80
ns
PR = -24 dBm
RL = 560 Ω, CL = 30 pF
Fig. 16, 17
Note 4
Parameter
Data Rate
Symbol Min. Typ. Max. Units
Conditions
Ref.
Standard
1 MBd
dc
1
MBd BER ≤ 10-9, PRBS:27-1
Link Distance
(Standard Cable)
8
17
m
m
IFdc = 60 mA
IFdc = 60 mA, 25°C
Fig. 12
Notes 1,
3, 4
Fig. 13
Notes 1,
3, 4
43
48
Link Distance
(Improved Cable)
10
19
m
m
IFdc = 60 mA
IFdc = 60 mA, 25°C
Propagation
Delay
tPLH
tPHL
180 250
100 140
ns
ns
RL = 560 Ω, CL = 30 pF Fig. 16, 18
I = 0.5 metre
PR = -20 dBm
Notes 2, 4
Pulse Width
Distortion tPLH-tPHL
tD
80
ns
PR = -20 dBm
RL = 560 Ω, CL = 30 pF
Fig. 16, 17
Note 4
Notes:
1. For I
> 80 mA, the duty factor must be such as to keep I
≤ 80 mA. In addition, for I
> 80 mA, the following rules for
FPK
FPK
Fdc
pulse width apply:
I
≤ 160 mA: Pulse width ≤ 1 ms
FPK
I
> 160 mA: Pulse width ≤ 1 µS, period ≥ 20 µS.
FPK
2. The propagation delay for one meter of cable is typically 5 ns.
3. Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.
4. Pulsed LED operation at I > 80 mA will cause increased link t propagation delay time. This extended t time contributes
PLH
FPK
PLH
to increased pulse width distortion of the receiver output signal.
HP [ HEWLETT-PACKARD ]
