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CABLE SPECIFICATIONS
Twisted Pair Cable and Connector Specifications
MA-TX
Either shielded twisted-pair (STP) or unshielded twisted-pair (UTP) can be used. .
CATEGORY 5:
Gauge
Attenuation
Maximum Cable Distance*:
Twisted pair connection requires two active pairs configured as straight-through
OR as crossover. The two active pairs in an Ethernet™ network are pins 1 & 2
and pins 3 & 6. Use only dedicated wire pairs (such as blue/white & white/blue,
orange/white & white/orange) for the active pins.
Straight Through
1
Twisted Pair #1
2
3
Twisted Pair #2
6
Fiber Cable
MULTIMODE
Fiber Optic Cable Recommended:
Optional:
Bit error rate:
E-FX-HB-xx00, MA-FST
Fiber-optic Transmitter Power:
Fiber-optic Receiver Sensitivity:
Link Budget
Typical Maximum Cable Distance:*
E-FX-HB-xx00(SC), MA-FSC
Fiber-optic Transmitter Power:
Fiber-optic Receiver Sensitivity:
Link Budget
Typical Maximum Cable Distance:*
SINGLEMODE
Fiber Optic Cable Recommended:
Bit error rate:
MA-FSM
Fiber-optic Transmitter Power:
Fiber-optic Receiver Sensitivity:
Link Budget
Typical Maximum Cable Distance:*
*Actual distance dependent upon physical characteristics of network installation.
Category 5 twisted-pair copper
24 to 22 AWG
22.0 dB /100m @ 100 MHz
100 meters
Crossover
1
1
1
Twisted Pair #1
2
2
2
3
3
3
Twisted Pair #2
6
6
6
62.5 / 125 µm multimode fiber
100 / 140 µm multimode fiber
85 / 125 µm multimode fiber
50 / 125 µm multimode fiber
10
-11
1300 nM
min: -16.0 dBm
max: -9.0 dBm
min: -35.0 dBm
max: -14.0 dBm
19 dB
2 kilometers
1300 nM
min: -16.0 dBm
max: -9.0 dBm
min: -35.0 dBm
max: -14.0 dBm
19 dB
2 kilometers
9 µm singlemode fiber
-11
10
1300 nM
min: -16.0 dBm
max: -9.0 dBm
min: -35.0 dBm
max: -14.0 dBm
19 dB
20 kilometers
Cascade two repeater stacks by
connecting fiber cable from a
connector at the front of the
first hub to a connector at the
front of the second hub.
COL
PWR
GFT
COL
PWR
GFT
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
COL
COL
STAT
PWR
PWR
GFT
GFT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
COL
COL
STAT
PWR
PWR
GFT
GFT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
COL
COL
STAT
PWR
PWR
GFT
GFT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Using the 512-Bit Rule
When configuring Fast Ethernet™ networks, use the 512-bit rule to determine
masimum cable lengths for each half-duplex collision domair.
Class I repeater
140 BT
Class II repeater
92 BT
Class I TX/FX media converter
130 BT
Class II TX/FX media converter
92 BT
DTE (PC, switch, router)
50 BT
1 meter CAT.5 TP cable
1.11 BT
1 meter fiber cable
1 BT
Fast Ethernet switch
50 BT
To calculate a collision domain
round-trip delay in bit-times, find
the longest path between any two
terminal devices in the collision
domain. Calculate the round trip
delay by multiplying the length of
the cable (in meters) by the delay
per meter (in bit-times (BT)), then
take the sum of all cable delays
plus station (DTE), repeater, and
multi-port media converter port
delays. If the result is less than or
equal to 512 bit-times, the path is
good.
to hub, switch or router
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
BB
100BASE-FX
STAT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
STAT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
11
9
10
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
STAT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
11
9
10
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
STAT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
STAT
ACT
100BASE-FX
BB
STAT
ACT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
In a half-duplex network, maximum
cable lengths are determined by the
round trip delay limitations of each Fast
Ethernet
collision domain. (Switches
™
and routers divide the network into
separate Ethernet™ collision domains.)
The 512-Bit Rule determines maximum
distances by calculating the collision
domain round-trip delay in bit-times.
30 meters TP
@ 1.11BT/meter
= 33.3BT
Class I
Hub
= 140BT
Switch
5 meters TP
= 50BT
@ 1.11BT/meter
= 5.55BT
Class II
Hub
= 140BT
Collision Domain
20 meters TP
50.00BT
@ 1.11BT/meter
+22.20BT
= 22.2BT
+140.00BT
+5.55BT
+140.00BT
+33.30BT
DTE=50BT
+50.00BT
___________
= 441.05BT
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