CABLE SPECIFICATIONS
Fiber Cable
Bit error rate:
≤
10-9
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
C/T1E1-CF-01
850 nM
Fiber Optic Transmitter Power:
min: -14.0 dBm
max: -12.0 dBm
Fiber Optic Receiver Sensitivity:
min: -25.0 dBm
max: -12.0 dBm
Typical Maximum Cable Distance*:
2 kilometers
C/T1E1-CF-01(SC)
850 nM
Fiber-optic Transmitter Power:
min: -14.0 dBm
max: -12.0 dBm
Fiber-optic Receiver Sensitivity:
min: -25.0 dBm
max: -12.0 dBm
Typical Maximum Cable Distance*:
2 kilometers
SINGLEMODE
Fiber Optic Cable Recommended:
9 µm singlemode fiber
C/T1E1-CF-01(SM)
1300 nM
Fiber-optic Transmitter Power:
min: -21.0 dBm
max: -14.0 dBm
Fiber-optic Receiver Sensitivity:
min: -25.0 dBm
max: -14.0 dBm
Typical Maximum Cable Distance*:
8 kilometers
C/T1E1-CF-01(LH)
1300 nM
Fiber-optic Transmitter Power:
min: -15.0 dBm
max: -5.0 dBm
Fiber-optic Receiver Sensitivity:
min: -25.0 dBm
max: -14.0 dBm
Typical Maximum Cable Distance*:
15 kilometers
*Actual distance dependent upon physical characteristics of network installation.
Twisted-Pair Copper Cable
Twisted pair connection requires two active pairs. The two active pairs in a T1/E1
network are pins 1 & 2 and pins 4 & 5. Use only dedicated wire pairs (such as
blue/white & white/blue) for the active pins.
Category 3 or better twisted-pair copper wire is required. Either shielded twisted-
pair (STP) or unshielded twisted-pair (UTP) can be used.
T1:
Gauge
24 to 22 AWG
Attenuation
2.6 dB/100 meters @ 1.0 MHz
Differential Characteristic Impedance
100
Ω
±10%
E1:
Gauge
24 to 22 AWG
Attenuation
2.6 dB/100 meters @ 1.0 MHz
Differential Characteristic Impedance
120
Ω
±10%
Coax Copper Cable
E1:
Gauge
24 to 22 AWG
Attenuation
2 dB/100 meters @ 1.0 MHz
Differential Characteristic Impedance
75
Ω
±10%
å
Dry-Contact Relay
RJ-45 dry-contact relay opens if power, signal detect/copper or signal
detect/fiber are lost.
Operational rating on pins 3 and 6: 0-30VDC maximum 1A
Switch-Selectable Configurations
T1 COPPER RJ-45
Configured as either "long haul" or “short haul” on 100 ohm cable, with
a variety of selectable distance settings.
E1 COPPER RJ-45
Configured as either "long haul" or “short haul” on 120 ohm cable.
E1 COPPER COAX
Configured as either "long haul" or “short haul” on 75 ohm cable.
STRAIGHT-THROUGH/CROSSOVER RJ-45
Allows straight-through cable to be used where crossover-configuration
cable is required.
Switch-Selectable Functions
LOOPBACK TEST FUNCTION
A loopback switch facilitates installation and network debug procedures.
The path for the C/T1E1-CF-01 loopback is shown:
TRANSMIT ALL ONES FUNCTION
A selectable Transmit All Ones switch on the fiber interface and on the
twisted-pair interface allows for insertion of an “all ones” pattern on that
Fiber
TP
TP
RJ-45
Relay
3
6
