參數(shù)資料
型號(hào): HFBR-1402M
英文描述: Components is Designed to Provide cost effective, High performance fiber optic communication links
中文描述: 組件旨在提供低成本,高性能的光纖通訊聯(lián)系
文件頁(yè)數(shù): 4/25頁(yè)
文件大?。?/td> 288K
代理商: HFBR-1402M
12
Figure 3. HFBR-1414/HFBR-2412 Link Design
Limits with 62.5/125 m Cable.
Figure 4. HFBR-14x2/HFBR-24x2 Link Design
Limits with 100/140 m Cable.
Figure 5. HFBR-14x4/HFBR-24x2 Link Design
Limits with 50/125 m Cable.
Figure 6. Propagation Delay through System
with One Meter of Cable.
Figure 7. Typical Distortion of Pseudo Random
Data at 5 Mb/s.
Figure 8. System Propagation Delay Test Circuit and Waveform Timing Definitions.
10LOG(I/Io)
NORMALIZED
TRANSMITTER
CURREN
T
(dB)
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
I F
TRANSMITTER
FORW
ARD
CURRENT
(mA)
60
50
40
30
20
10
6
4
2
0
LINK LENGTH (km)
CABLE ATTENUATION
MAX (-40 C, +85 C)
MIN (-40 C, +85 C)
TYP (+25 C)
dB/km
4
1.5
2.8
OVERDRIVE
WORST CASE
-40 C, +85 C
UNDERDRIVE
TYPICAL +25 C
UNDERDRIVE
10LOG(I/Io)
NORMALIZED
TRANSMITTER
CURREN
T
(dB)
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
I F
TRANSMITTER
FORW
ARD
CURRENT
(mA)
60
50
40
30
20
10
6
4
2
0
LINK LENGTH (km)
CABLE ATTENUATION
MAX (-40 C, +85 C)
MIN (-40 C, +85 C)
TYP (+25 C)
dB/km
5.5
1.0
3.3
OVERDRIVE
WORST CASE
-40 C, +85 C
UNDERDRIVE
TYPICAL +25 C
UNDERDRIVE
13
0
-1
-2
-3
-4
-5
-6
0
0.4
0.8
1.2
1.6
2
10
LOG
(t/to)
NORMALIZED
TRANSMITTER
CURRENT
(dB)
LINK LENGTH (km)
I
F
TRANSMITTER
FORWARD
CURRENT
(mA)
60
50
40
30
20
WORST CASE
-40C, +85C
UNDERDRIVE
CABLE ATTENUATION
dB/km
α MAX (-40C, +85C)
4
α MIN (-40C, +85C)
1
α TYP (-40C, +85C)
2.8
TYPICAL 26C
UNDERDRIVE
75
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
P R – RECEIVER POWER – dBm
t
PLH
OR
t
PHL
PROPOGATION
DELAY
–ns
70
65
60
55
50
45
40
35
30
25
20
tPLH (TYP) @ 25C
tPHL (TYP) @ 25C
55
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
P R – RECEIVER POWER – dBm
t D
NRZ
DISTORTION
ns
50
45
40
35
30
25
20
I
F 10 W
PULSE
GEN
75451
1N4150
10 W
+15 V
R
S
2, 6, 7
RESISTOR VALUE AS NEEDED FOR
SETTING OPTICAL POWER OUTPUT
FROM RECEIVER END OF TEST CABLE
3
TRANSMITTER
P
T -
FROM 1-METER
TEST CABLE
INPUT (I
F)
2
6
7 & 3
+
V
O
15 pF
R
L
+5 V
560
0.1 F
OUTPUT
TIMING
ANALYSIS
EQUIPMENT
eg. SCOPE
HFBR-2412 RECEIVER
INPUT
I
F
P
T
V
O
50%
t
PHL
MAX
5 V
1.5 V
0
t
PHLT
100 ns
t
PHL
MIN
PULSE REPETITION
FREQ = 1 MHz
100 ns
t
PHLT
t
PHL
MAX
t
PHL
MIN
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