CABLE SPECIFICATIONS
Twisted Pair Cable and Connector Specifications
MA-TX
Category 5 twisted-pair copper
Either shielded twisted-pair (STP) or unshielded twisted-pair (UTP) can be used. .
CATEGORY 5:
Gauge
24 to 22 AWG
Attenuation
22.0 dB /100m @ 100 MHz
Maximum Cable Distance*:
100 meters
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.
Fiber Cable
MULTIMODE
Fiber Optic Cable Recommended:
62.5 / 125 µm multimode fiber
Optional:
100 / 140 µm multimode fiber
85 / 125 µm multimode fiber
50 / 125 µm multimode fiber
Bit error rate:
≤
10
-11
E-FX-HB-xx00, MA-FST
1300 nM
Fiber-optic Transmitter Power:
min: -16.0 dBm
max: -9.0 dBm
Fiber-optic Receiver Sensitivity:
min: -35.0 dBm
max: -14.0 dBm
Link Budget
19 dB
Typical Maximum Cable Distance:*
2 kilometers
E-FX-HB-xx00(SC), MA-FSC
1300 nM
Fiber-optic Transmitter Power:
min: -16.0 dBm
max: -9.0 dBm
Fiber-optic Receiver Sensitivity:
min: -35.0 dBm
max: -14.0 dBm
Link Budget
19 dB
Typical Maximum Cable Distance:*
2 kilometers
SINGLEMODE
Fiber Optic Cable Recommended:
9 µm singlemode fiber
Bit error rate:
≤
10
-11
MA-FSM
1300 nM
Fiber-optic Transmitter Power:
min: -16.0 dBm
max: -9.0 dBm
Fiber-optic Receiver Sensitivity:
min: -35.0 dBm
max: -14.0 dBm
Link Budget
19 dB
Typical Maximum Cable Distance:*
20 kilometers
*Actual distance dependent upon physical characteristics of network installation.
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.
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.
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
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
1
3
2
STAT
PWR
4
5
7
6
8
9
11
10
12
13
15
14
16
COL
ACT
100BASE-FX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACT
STAT
GFT
BB
Collision Domain
Class II
Hub
30 meters TP
@ 1.11BT/meter
= 33.3BT
5 meters TP
@ 1.11BT/meter
= 5.55BT
= 140BT
Class I
Hub
= 140BT
20 meters TP
@ 1.11BT/meter
= 22.2BT
DTE=50BT
50.00BT
+22.20BT
+140.00BT
+5.55BT
+140.00BT
+33.30BT
+50.00BT
___________
= 441.05BT
Switch
= 50BT
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
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.
Crossover
1
2
3
6
Straight Through
Twisted Pair #1
Twisted Pair #1
Twisted Pair #2
Twisted Pair #2
1
2
3
6
1
2
3
6
1
2
3
6
