Transcript
ADCP-61-201 • Issue 8 • July 2000
T-TERM® T1 Termination System® User Manual®
13575-A
T-TERM T1 Mounting Shelf Content
Page
INTRODUCTION .......................................................................... 2 1
1.1
Fuse and Alarm Card ............................................................ 6
1.2
Jack Access Card ............................................................... 6
2
APPLICATION ....................................................................... 7
3
SPECIFICATIONS..................................................................... 9
4
1116618 Rev A
PRODUCT DESCRIPTION ............................................................... 3
3.1
Jack Access Card ............................................................... 9
3.2
Fuse and Alarm Card ............................................................10
3.3
Shelf .......................................................................11
INSTALLATION ......................................................................11 4.1
Mounting Brackets ..............................................................11
4.2
Shelf Installation ...............................................................11
4.3
Shelf Connections ..............................................................12
4.4
Card Installation ...............................................................14
4.5
Power and Ground Connections .....................................................14
5
OPERATING INFORMATION..............................................................15
6
MAINTENANCE ......................................................................15
7
CUSTOMER INFORMATION AND ASSISTANCE .................................................16
Page 1 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
INTRODUCTION This manual provides specifications, circuit and mechanical descriptions, and application, installation, and operating information for the T-TERM T1 Termination System, catalog no. 76020013.
Revision History ISSUE
DATE
Issue 1
02/1991
Issue 2
08/1991
Issue 3
04/1993
Issue 4
06/1995
Issue 5
06/1996
Issue 6
05/1997
Issue 7
03/2000
Issue 8
07/2000
REASON FOR CHANGE
Trademark Information ADC is a registered trademark of ADC Telecommunications, Inc. T-TERM is a registered trademark of ADC Telecommunications, Inc.
Admonishments Important safety admonishments are used throughout this manual to warn of possible hazards to persons or equipment. An admonishment identifies a possible hazard and then explains what may happen if the hazard is not avoided. The admonishments — in the form of Dangers, Warnings, and Cautions — must be followed at all times. These warnings are flagged by use of the triangular alert icon (seen below), and are listed in descending order of severity of injury or damage and likelihood of occurrence. Danger: Danger is used to indicate the presence of a hazard that will cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Warning: Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Caution: Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or property damage if the hazard is not avoided.
Page 2 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
1
PRODUCT DESCRIPTION The T-TERM T1 Termination System is a centralized CO digital service system that terminates up to five T1 spans per shelf and provides jack access to the spans. Five 231 type Office Repeaters and equalizer networks can be mounted in the system. The shelf distributes fused power to the various modules. Major and minor fuse alarm outputs are included. Figure 1 is a simplified diagram of the basic T1 Digital Service System. The system consists of the following components: 1. One mounting shelf, catalog no. 76020013. One shelf provides five span terminations. The shelf occupies seven vertical inches of rack space, and can be installed in a 19-inch or a 23-inch rack. All card slots are dedicated. All intra-shelf connections are factory wired. See Figures 2 and 3. 2. One Fuse and Alarm Card, catalog no. 76150011. This card provides –48 Vdc, +130 Vdc and –130 Vdc fusing, major and minor fuse alarm LED indicators, and major and minor fuse alarm outputs for the shelf. See Figure 4. 3. Up to five Jack Access Cards, catalog no. 76100002. One card is required for each termination circuit. Each Jack Access Card provides eight jacks for access to transmit and receive span-line pairs, plus spare jacks. See Figure 5. 4. Up to five 231 type Office Repeater Cards, (not supplied). One card is required for each termination. The system shelf mounts in a 19-inch or 23-inch rack and requires seven vertical inches of rack space. All connections to the shelf are to wire-wrap terminals except the power and ground connections which are made to screw-type terminal blocks. All intra-shelf connections are factory wired. A printed circuit backplane provides connections between circuit cards. The shelf holds one Fuse and Alarm Card, up to five 231 type Office Repeater Cards, and up to five Jack Access Cards. Termination of one span requires one Repeater card and one Jack card. The left-most shelf slot, (J1), is reserved for the Fuse and Alarm Card. The remaining slots are filled with a pair of cards for each span termination: a Jack Access Card (J2, J4, J6, J8, and J10) followed by an office repeater card (J3, J5, J7, J9, and J11).
Page 3 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
FUSE AND ALARM CARD
ALARMS OUT REPEATER FUSE ALARM IN
POWER SUPPLY OR BATTERY
PWR
LINE SIDE
OFFICE SIDE PWR
MDF T1 RCV
PWR EQ
RPTR
TO DSX
FROM DSX
T1 XMT
DC CNTL
DC CNTL
JACK ACCESS
REPEATER SLOT
JACK ACCESS SLOT
8232-A
Figure 1. Simplified System Diagram
J1
J2
J3
J4
FUSE & ALARM
CKT 1
JAU
RPTR
J5
CKT 2
JAU
RPTR
J6
J7
J8
CKT 3
JAU
RPTR
J9
J10
CKT 4
JAU
RPTR
J11
CKT 5
JAU
RPTR
8230-A
Figure 2. Shelf Front View
Page 4 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
J11
J10
J26
J25
J9
J8
J24
J23
J7
J6
J22
J5
J21
J20
J4
J3
J2
J19
J18
J1
8231-B
–130 Vdc
–48 Vdc
FRM GND
CKT GND
+130 Vdc
Figure 3. Shelf Rear View
MINOR ALARM LED
761000 JACK ACCESS
MAJOR ALARM LED
OFF
REMOTE TEST LED
RT
REMOTE TEST LOOPBACK SWITCH
LB
LOOPBACK LED
–48 Vdc 5A FUSE
7 6 1 5 0 0
SPARE 1
SPARE 2
ALM & FUSE
–130 Vdc 1A FUSE
+130 Vdc 1A FUSE 8233-B
Figure 4. Fuse and Alarm Card Front View
R C V
DROP DROP IN OUT
RPTR RPTR OUT IN
LINE MON
ACCESS JACKS X M T
LINE MON
8234-C
Figure 5. Jack Access Card Front View
Page 5 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
The items listed below can be ordered from their manufacturers to complete the T1 system. One repeater card and one equalizer are required for each termination circuit. If the repeater has built-in equalization, you must use an equalizer by-pass plug in place of an external equalizer. The Fault Locate Filter is optional. 1. 231 type Office Repeater Card(s). 2. AT&T ED3C585-30 Equalizer(s), or similar type as required by the distance to the DSX. Connections to the system are made to wire-wrap terminals (DSX and Line connections) and a terminal block (power and ground connections) at the rear of the shelf. Set-up consists of the following steps: 1. Mounting the shelf in the rack. 2. Making wiring connections to the shelf backplane. 3. Selecting –48 Vdc or –l30 Vdc power for DC loopback control. 4. Installing the selected filters and/or equalizers. 5. Installing the cards in the shelf. Repeater set-up requirements are described in the BSP or practice for the office repeater.
1.1 Fuse and Alarm Card The Fuse and Alarm Card provides the system with both major and minor alarm outputs. The alarm contacts have both normally open and normally closed paths and are electrically isolated. The major alarm is activated when the shelf fuse opens. The minor alarm is activated when any repeater fuse opens. LEDs illuminate for fast visual identification of minor (yellow) and major (red) alarms. The alarms can be connected to an office alarm system. Three GMTtype fuses on the card protect the –48 Vdc, –130 Vdc, and +130 Vdc lines from overload. Refer to Figure 4.
1.2 Jack Access Card The Jack Access Card provides break and test, as well as monitor jack access to the transmit (XMT) and receive (RCV) T1 pairs. It also provides an equalizer mounting for the repeater end point. The equalizer ensures that the repeater output arrives at the DSX cross-connect point with the level and wave shape required for a T1 signal. The Jack Access Card has eight front panel jacks. See Figure 5: 1. The receive span-line pair (Side 2) has a Break and Test jack toward the Line side (RPTR OUT), a Break and Test jack toward the DSX side (DROP IN), and a Monitor jack (LINE MON). 2. The transmit span-line pair (Side 1) has a Break and Test jack toward the Line side (RPTR IN), a Break and Test jack toward the DSX side (DROP OUT), and a Monitor jack (LINE MON). 3. The two Spare jacks can be wired for additional customer functions.
Page 6 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
A recessed three-position switch on the front panel selects the Loopback (LB), Remote Test (RT), or the No-signal (OFF) function. Loopback control power is user-selectable to –48 Vdc, or –130 Vdc, by a jumper plug on the PC board (See Figure 6). Remote test control power provides the opposite polarity of loopback control power and the same voltage. LEDs provide a visual indication when either the loopback or remote test function is enabled. The no-signal position is electrically open.
J8
EQUALIZER
4 3 2 1
–130V –48V
J7
8244-A
Figure 6. Filter/Equalizer Installation
An external equalizer (AT&T ED3C585-30 or similar type) must be installed on the card to compensate for office cabling from the DSX to the associated repeater if the repeater does not have built-in equalization. If the repeater has built-in equalization, use an Equalizer By-Pass Plug in place of an external equalizer.
2
APPLICATION The T-TERM T1 Termination System provides termination and facility maintenance features. The system provides CO access required to provide T1, 1.544 Mbps Digital Service. Refer to Figure l. Figure 7 shows an example of how the T-TERM system may be used in a customer premise. An assortment of T1 CSUs are compatible.
Page 7 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
CUSTOMER PREMISE
TO CUSTOMER EQUIPMENT
T1
77990 CSU
77961 CSU
T1
T1
77965 CSU
T1 CSU
T1
T1 CSU
T1
TO CUSTOMER EQUIPMENT
T1 DS3
TO NETWORK
T-TERM SHELF SYSTEM
M13
8235-B
Figure 7. Application: Customer Premises
Applications involving fiber networks can use the T1 Digital Service System in a Remote Central Office configuration. The unit is co-mounted with a #76400 SLICK SWITCH T1 Facility Terminal or existing subscriber line carrier equipment in a Controlled Environment Vault (CEV), or Type 80 cabinet. Figure 8 shows an example of this system.
CONTROLLED ENVIRONMENT VAULT T1 TO SERVING OFFICE
DS3
76400 SLICK SWITCH T1 FACILITY TERMINAL
M13
TO SLC 96
CUSTOMER PREMISE T1
T-TERM SHELF SYSTEM
T1
77961/ 77965 CSU
T1
T1
Figure 8. Application: Remote CO
Page 8 © 1999, ADC Telecommunications, Inc.
TO CUSTOMER EQUIPMENT
8236-B
ADCP-61-201 • Issue 8 • July 2000
3
SPECIFICATIONS
3.1 Jack Access Card (see Figure 9) PARAMETER
SPECIFICATION
Electrical Specification
Power Voltages
–42 Vdc to –56 Vdc –120 Vdc to –135 Vdc
Current Consumption
Less than 130mA @ –56 Vdc Less than 30mA @ –l35 Vdc
Jacks Transmit T1
Break and Test Line side Break and Test DSX side Monitor on DSX side
Receive T1
Break and Test Line side Break and Test DSX side Monitor on Line side
Spare
2 independent jacks Connection available at edge connector
Control Power Source: Strap Option
–48 Vdc, –130 Vdc
Current: Source Limit
PCT thermistor
Sink Limit
23mA to 29mA
Control
Three-position switch
Center
Open
LB
T negative, R positive
RT
T positive, R negative
Indicators
2 LEDs, labeled LB and RT. Normally off. Illuminate when switch is in corresponding position.
Protection
Meets requirements of TR-EOP-000001
Mechanical Specification
Weight
1 lb 3.5 oz (0.6 kg)
Operating Environment
32° F to 131° F (0° C to 55° C), up to 95% Relative Humidity (non-condensing)
Dimensions
5.6 in. (14.22 cm) × 1.5 in. (3.81 cm) × 10.02 in. (25.45 cm)
Page 9 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
761000 JACK ACCESS RT
OFF
LB
SPARE 1
SPARE 2
DROP DROP IN OUT
R C V
RPTR RPTR OUT IN
LINE MON
X M T
LINE MON
FRONT
SIDE
8237-C
Figure 9. Jack Access Card
3.2 Fuse and Alarm Card (see Figure 10) PARAMETER
SPECIFICATION
Electrical Specification
Power Voltage Current Consumption Interface Fuses
–44 Vdc to –56 Vdc –105 Vdc to –135 Vdc +105 Vdc to +135 Vdc 50mA @ –48 Vdc 25mA @ –130 Vdc 16mA @ +130 Vdc Toward the repeater by application of voltages that are current limited at their source by 1000 ohms. Output interface is isolated by dry, unprotected form C relay contacts. Top: –48 Vdc, 5A Middle: –130 Vdc, 1A Bottom: +130 Vdc, 1A
Inputs +ALM
+105 Vdc to +135 Vdc through 1000 ohms
–ALM
–105 Vdc to –135 Vdc, or –44 Vdc to –56 Vdc, through 1000 ohms
Outputs Visual
Signal
Yellow LED (MINOR), illuminates when +ALM and/or –ALM signal is received. Red LED (MAJOR), illuminates when –130 Vdc, +130 Vdc, or –48 Vdc fuse opens. +ALM or -ALM signal operates one or both of the MINOR alarm relays. COM/NO path closes, COM/NC path opens. Fuse failure operates one or both of the MAJOR alarm relays. COM/NO path closes, COM/NC path opens.
Mechanical Specification
Weight
8 oz. (0.24 kg)
Operating Environment
32° F to 122° F (0° C to 50° C), up to 95% Relative Humidity (+10 to +38° C) non-condensing 5.6 in. (14.22 cm) × 0.25 in. (6.36 cm) × 10.2 in. (25.90 cm)
Dimensions (H × W × D)
Page 10 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
–48 Vdc 1A FUSE 7 6 1 5 0 0
ALM & FUSE
–130 Vdc 1A FUSE
–130 Vdc 1A FUSE
FRONT
SIDE
8238-C
Figure 10. Fuse and Alarm Card
3.3 Shelf (see Figures 2 and 3) PARAMETER
SPECIFICATION
Mechanical Specification
4
Weight
11 lb., 9 oz. (5.2 kg)
Operating Environment
32° F to 122° F (0 to +55° C), up to 95% RH (non-condensing)
Dimensions (H × W × D)
6.75 in. (17.14 cm) × 17.25 in. (43.81 cm) × 12.13 in. (30.81 cm)
INSTALLATION Warning: To prevent electrical shock, never install a T-TERM T1 Termination System in a wet location or during a lightning storm. When installing or modifying telephone lines, disconnect lines at the network interface before working with un-insulated lines or terminals.
4.1 Mounting Brackets The mounting brackets are attached to the shelf before shipping. They are mounted for shelf installation in a 19-inch rack. For installation in a 23-inch rack, remove the screws and washers used to mount the brackets, turn the brackets so that the long side extends out from the side of the shelf, and re-install the screws and washers. See Figure 11.
4.2 Shelf Installation Note: If the T-TERM shelf is to be installed where the backplane will not be accessible, complete section 4.3 before completing section 4.2. Mount the shelf in the rack with the four mounting screws and the four plastic washers (supplied). See Figure 12. The washer goes between the head of the screw and the shelf bracket.
Page 11 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
19-INCH RACK MOUNTING
23-INCH RACK MOUNTING
8239-A
Figure 11. Mounting Bracket Arrangements
8240-A
Figure 12. Shelf Mounting
4.3 Shelf Connections Note: All wiring external to the product(s) should follow the provisions of the current edition of the National Electrical Code. Except for power and ground connections, all wiring to the system is made to wire-wrap terminals at the rear of the shelf. Power and ground connections are made to a terminal block. Shield connections are made to wire-wrap pins J18 through J26 (see Figure 3). Before wiring, remove the plastic cover that protects the pins on the rear of the unit. Re-install the cover when the wiring is complete. Alarm connections are made to connector J1. Wire-wrap terminal designations for the connectors are shown in Figure 13. DSX connections (Jack Access Card slots) are made to the even numbered connectors (J2, J4, J6, J8, and J10). Wire-wrap terminal designations for the connectors are shown in Figure 14. Line connections (Repeater slots) are made to wire-wrap pins directly on the odd numbered connectors (J3, J5, J7, J9 and 11). See Figure 15. All connectors can be wired at this time, even though some span terminations may not be used immediately. The shelf terminals to the spare jacks on the Jack Access Cards can be used for other functions.
Page 12 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
44
VISUAL MAJOR AUDIBLE VISUAL
43
CONTROL 44
COM 30
29 N.C.
N.O. 28 COM 26
27 N.C.
N.O. 24
23 N.C.
–130 32 DSX IN R1 28
DSX OUT T 22
N.O. 20
R 16 R 14
COM 14 N.O. 12
2
1
2
8241-A
Figure 13. J1, Alarm Connections Fuse and Alarm Card
RCV LINE
XMT LINE
21 R DSX OUT
–48 18
15 N.C. AUDIBLE
27 T1 DSX IN
GND
COM 22
MINOR
43 R CONTROL
15 T SPARE JACK #2 13 T SPARE JACK #1
1
8242-A
Figure 14. J2, J4, J6, J8, J10, DSX Connections Jack Access Card
T1 26 R1 27
1
T 34 R 35
14 –48
19 GND
50
25
8243-A
Figure 15. J3, J5, J7, J9, J11, Line Connections, Repeater Card
Page 13 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
4.4 Card Installation 4.4.1
Fuse and Alarm Card
Check the values of the fuses on the Fuse and Alarm card. The fuse near the top of the card should be 5 Amp. The two remaining fuses should be 1 Amp. If fuse values are not correct, replace with the correct type and rating. Refer to section 6 for part numbers of fuse kits. Install the Fuse and Alarm card in slot J1 at the far left shelf position (as viewed from front of shelf). Align the card vertically in the slot guides, slide the card in, then press firmly to seat the rear edge connector. See Figure 2 for the slot designations. 4.4.2
Jack Access Card
Position the jumper plug on each Jack Access Card for the desired DC Loop Control voltage (See Figure 6). One position selects –130 Vdc; the other position selects –48 Vdc. If the control loop resistance exceeds 950 ohms, select the –130 Vdc current. The Jack Access Card is shipped with the jumper plug in the –48 Vdc position. Install an AT&T ED3C585-30 Equalizer (or similar type) on each Jack Access Card. The equalizer plugs into connector J8 on the card. If the repeater has built-in equalization, you must use Equalizer By-Pass Plug #76005001 in place of an equalizer on J8 (See Figure 6). Install the Jack Access Cards in shelf slots J2, J4, J6, J8, and J10. If fewer than five Jack Access Card-office repeater pairs are to be installed, installation of the card pairs need not be in consecutive shelf slot pairs; for example, slots J4 and J5 (one slot pair) may be left empty, with the remaining slots occupied. Refer to Figure 2 for slot designations. 4.4.3
Repeater Cards
Refer to the appropriate practice from the manufacturer of the office repeater cards to prepare the office repeaters for installation. Then, install the office repeater cards in the remaining slots (J3, J5, J7, J9, and J11) adjacent to associated Jack Access cards. Refer to Figure 2 for slot designations.
Note: Before installing an AT&T 231A Repeater card, check that the card is configured as per AT&T Document SD3C370-01.
4.5 Power and Ground Connections Make –130 Vdc, +130 Vdc, and –48 Vdc power connections to the shelf terminal block at the rear of the shelf as shown in Figure 16.
Danger: To avoid risk of personal injury, remove the bay fuses to turn off power to the power cables before making any connections.
Page 14 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
Connect the battery return to the CKT GND terminal. If a separate frame ground is used, connect the frame ground to the FRM GND terminal. If a separate frame ground is not used, jumper the FRM GND terminal to the CKT GND terminal. After all connections have been made, re-install the bay fuses. Check the alarm LED indicators. All alarm indicators should be off. –130 Vdc +130 Vdc
–48 Vdc
8245-B
FRM GND
CKT GND
Figure 16. Power Terminal Block
5
OPERATING INFORMATION After the initial set-up and installation, no further actions are necessary for adjustment, alignment, or routine maintenance. However, the system is designed to ease the task of facility and system maintenance. Refer to Section 2 (Applications) for information regarding use for particular applications.
6
MAINTENANCE Maintenance of the system consists of fuse and/or card replacement to correct failures. Caution: For continued protection against risk of fire, replace only with same type and ratings of fuse. Fusing failures are indicated by dry form C alarm contacts and LEDs on the Fuse and Alarm Card. A minor (yellow) alarm indicates a fuse failure on one or more of the office repeater cards. A major alarm (red) indicates a fuse failure on the Alarm and Fuse Card, which affects all of the lines. T1 line failures will be taken care of by standard CO Tl maintenance procedures.
Fuse Kits: Package of 10 fuses (1A): F-1 Package of 10 fuses (5A): F-5
Page 15 © 1999, ADC Telecommunications, Inc.
ADCP-61-201 • Issue 8 • July 2000
7
CUSTOMER INFORMATION AND ASSISTANCE For customers wanting information on ADC products or help in using them, ADC offers the services listed below. To obtain any of these services by telephone, first dial the central ADC telephone number, then dial the extension provided below. The central number for calls originating in the U.S.A. or Canada is 1-800-366-3891. For calls originating outside the U.S.A. or Canada, dial country code “1” then dial 952-946-3000. Sales Assistance Extension 3000
• Quotation Proposals • Ordering and Delivery • General Product Information
Systems Integration Extension 3000
• • • • • • •
Complete Solutions (from Concept to Installation) Network Design and Integration Testing System Turn-Up and Testing Network Monitoring (Upstream or Downstream) Power Monitoring and Remote Surveillance Service/Maintenance Agreements Systems Operation
BCG Technical Assistance Center Extension 3475 E-Mail:
[email protected]
• • • • • •
Technical Information System/Network Configuration Product Specification and Application Training (Product-Specific) Installation and Operation Assistance Troubleshooting and Repair
Product Return Department Extension 3748 E-Mail:
[email protected]
• ADC Return Authorization number and instructions must be obtained before returning products.
Product information may also be obtained using the ADC web site at www.adc.com or by writing ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period. This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension 3475 (in U.S.A. or Canada) or 952-946-3000 (outside U.S.A. and Canada), or by writing to ADC Telecommunications, Inc., Attn: Technical Assistance Center, Mail Station #71, P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
© 2000, ADC Telecommunications, Inc. All Rights Reserved Printed in U.S.A.
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