Telect BCS II Manuale utente
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BCS II SIMPLEX REPEATER
USER MANUAL
117209-1 A0
ii Telect, Inc. 117209A0
710-3201-0002 BCS II Simplex Repeater User Manual
Document Number 117209A0
Copyright© Telect, Inc., 2001, All Rights Reserved.
Telect® and Connecting the Future® are registered trademarks of Telect, Inc.,
1730 N. Madson St., Liberty Lake, Washington 99019
Technical Support:
By phone: 888-821-4856 or 509-921-6161
Note:
Telect assumes no liability from the application or use of these products. Neither
does Telect convey any license under its patent rights nor the patent rights of oth-
ers. This document and the products described herein are subject to change with-
out notice.
FCC Compliance:
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment
is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy, and if
not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user will
be required to correct the interference at his own expense.
117209-1 A0 iii
Contents
1 Descriptions
BCS II Simplex Repeater .............................................. 1-1
Features .................................................................. 1-1
Specifications ................................................................ 1-1
Electrical................................................................. 1-1
Power...................................................................... 1-1
DS3 Input ............................................................... 1-2
DS3 Output............................................................. 1-2
E3 Input .................................................................. 1-2
E3 Output ............................................................... 1-2
STS-1 Input ............................................................ 1-3
STS-1 Output.......................................................... 1-3
Alarms .................................................................... 1-3
Environmental ........................................................ 1-4
Dimensions............................................................. 1-4
Schematic ............................................................... 1-5
System-Level Application...................................... 1-6
2 Installation
Installation Considerations ............................................ 2-1
Location and Space ................................................ 2-2
Tools and Equipment ............................................. 2-2
Power...................................................................... 2-2
Technical Support .................................................. 2-2
Inspection ...................................................................... 2-2
Installing the Repeater................................................... 2-3
iv Telect, Inc. 117209-1 A0
3 Operation
Monitoring .....................................................................3-1
Loopbacks ......................................................................3-1
Patching .........................................................................3-2
4 Service
Owner Maintenance.......................................................4-1
Replacing the Tracer Lamp LED............................4-1
In Case Of Difficulty .....................................................4-2
Technical Support...................................................4-2
In-Warranty Service.......................................................4-2
Out-Of-Warranty Service ..............................................4-3
Repacking For Shipment ...............................................4-3
117209-1 A0 1-1
1 Descriptions
BCS II SIMPLEX REPEATER
The Broadband Connectivity System II (BCS II) Simplex Repeater (part
# 710-3201-0002) regenerates DS3, E3, and STS-1 signals to allow in-
creased separation of network elements and provides full DSX function-
ality. The module installs in any vertical BCS II chassis or in the Vector
chassis and is always installed in pairs.
Features
• Full signal regeneration to equal level point on each circuit
• Mini-WECO monitor and I/O jacks
• Alarm and tracer lamp LEDs
• Full DSX functionality, including patching, monitoring and loop-
backs
SPECIFICATIONS
Electrical
Monitor Level: 20 dB + 1.5 dB below signal level
Return Loss: <-24 dB at DS3 signal rate
Impedance: 75Ω (+/- 5%)
Power
Battery Input: Aand B redundant, -42 to -58 Vdc
Input Current: 35 mA nominal @ 48V
Internal Fuse: 1/4 amp, not field replaceable
1 Descriptions BCS II Simplex Repeater User Manual
1-2 Telect, Inc. 117209-1 A0
DS3 Input
Data Rate: 44.736 Mb/s + 100 ppm
Data Format: Bipolar with B3ZS coding
Jitter Tolerance: Meets requirements of Telcordia GR-499-CORE, Is-
sue 1, December, 1995
Equalization: Selectable normal or high sensitivity receive equaliza-
tion, based on receive cable length
DS3 Output
Data Rate: Same as input signal, transmit clock is recovered from in-
put signal. Under AOS condition (no valid input): 44.736 Mb/s + 100
ppm
Data Format: Bipolar with B3ZS coding, input bipolar violations are
transparent to output
Pulse Shape: Complies with Telcordia GR-499-CORE, Issue 1, De-
cember, 1995. Pulse plate complies with ANSI T1.404 pulse template
LBO: Selectable DSX Level or DS3 High Output
E3 Input
Data Rate: 34.368 Mb/s + 100 ppm
Data Format: AMI with HDB3 coding
Jitter Tolerance: Meets ITU-T G.832, 1993 requirements
Equalization: Selectable normal or high sensitivity receive equaliza-
tion, based on receive cable length
E3 Output
Data Rate: Same as input signal, transmit clock is recovered from in-
put signal
Data Format: AMI with HDB3 coding
Pulse Shape: Complies with ITU-T G.703
LBO: Fixed transmit level
BCS II Simplex Repeater User Manual 1 Descriptions
117209-1 A0 1-3
STS-1 Input
Data Rate: 51.84 Mb/s + 100 ppm
Data Format: Bipolar with B3ZS coding
Jitter Tolerance: Meets Telcordia GR-499-CORE, Issue 1, December,
1995 requirements
Equalization: Selectable normal or high sensitivity receive equaliza-
tion, based on receive cable length
STS-1 Output
Data Rate: Same as input signal, transmit clock is recovered from in-
put signal
Data Format: Bipolar with B3ZS coding
Pulse Shape: Complies with Telcordia GR-CORE-253
LBO: Selectable DSX Level or STS-1 High Output
Alarms
Relay contacts rated for 2 amps maximum.
ALARM OUTPUTS, LEDs CONDITION
RCV LED GREEN / XMIT
LED GREEN / ALARM CON-
TACTS OPEN
NORMAL: VALID INPUT SIGNAL
RCV LED RED / XMIT LED
AMBER / MAJ ALARM CON-
TACT CLOSED
LOSS OF VALID INPUT SIGNAL /
ALL ONES SIGNAL AUTOMATI-
CALLY TRANSMITTED
XMIT LED RED / MAJ
ALARM CONTACT CLOSED
TRANSMITTER FAILURE
ALL FRONT PANEL LEDS
OFF / PWR FAIL ALARM
CONTACT CLOSED
FAILURE OF INTERNAL POWER
CONVERTER OR LOSS OF
BOTH BATTERY INPUTS
1 Descriptions BCS II Simplex Repeater User Manual
1-4 Telect, Inc. 117209-1 A0
Environmental
Humidity: 95% relative humidity, noncondensing
Temperature: Operational from 0-50°C
Heat Dissipation: 5.7 BTUs/hour
Dimensions
3.90 in.
9.91 cm
6.84 in.
17.37 cm
0.65 in.
1.
65
c
m
BCS II Simplex Repeater User Manual 1 Descriptions
117209-1 A0 1-5
Schematic
1 Descriptions BCS II Simplex Repeater User Manual
1-6 Telect, Inc. 117209-1 A0
System-Level Application
The simplex repeater regenerates DS3, E3, and STS-1 signals to equal
level point over a distance of up to 900 ft (using RG-59/734 cable). Two
repeaters are required to regenerate both the send and receive sig-
nals and complete the cross-connect.
The repeater regenerates the signal that appears on the IX port and trans-
mits it out the I port for a length dependent upon the type of cable used.
See the installation section to set the module jumpers based on cable
length.
The OX and O ports are passive; therefore, a second repeater is required
to regenerate and transmit the signal in the other direction. Each net-
work element can be located up to 900 ft from the far end repeater’s IX
port.
Simplex
Repeater
I
O
IX
OX
RX
TX
Simplex
Repeater
IX
OX
I
O
NE 2
RX
TX
NE 1
Up to 900 ft (using RG-59/734)
Up to 900 ft (using RG-59/734)
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