TC Communications TC1630R, RC1630S User Manual

TC1630R/S

RACK MOUNT/STAND ALONE

T1/E1 FIBER OPTIC MODEM

User's Manual

MODEL:

S/N:

DATE:

Although every effort has been made to insure that this manual is current
and accurate as of date of publication, no guarantee is given or implied
that this document is error free or accurate with regard to any specifica­tion. TC Communications, Inc. reserves the right to change or modify
the contents of this manual at any time without prior notification.

TC Communications, Inc. 17881 Cartwright Road - Irvine, CA 92614

Tel: [phone] Fax: [phone] Web Site: www.tccomm.com Email: [e-mail]

Notice!

© COPYRIGHT 1992-2007. ALL RIGHTS RESERVED.

TC1630R/S User's Manual

ON

123

4

567

8

ON

123

4

567

8

ON

123

4

567

8

Factory Default Configuration

This unit has been setup at the factory as follows:

LINE CODE LINE LENGTH

AMI B8ZS HDB3 T1/E1 0 -133 133-266 266-399 399-533 533-655

SW1: Line Code/Line Length switch setting (Only one setting should be marked):

Rev. 2.5

1 2 3 4

RM TLB

LOCLB

1 2 3 4

LEN2

LEN1

LEN0

HDB3

B8ZS

AMI

RM TLB

LOCLB

1 2 3 4

( ) ( )

1 2 3 4

LEN2

LEN1

LEN0

HDB3

B8ZS

AMI

RM TLB

LOCLB

1 2 3 4

1 2 3 4

LEN2

LEN1

LEN0

( )

HDB3

B8ZS

AMI

- 2 -

TC1630R/S User's Manual

Rev. 2.5

Table Of Contents

Factory Default Configuration ................................................................................................................ 2

Chapter 1 - Overview ............................................................................................................................... 4

Description.......................................................................................................................................... 4

Front Panel.......................................................................................................................................... 5

LEDs Functions ............................................................................................................................ 5

DIP Switch Functions .................................................................................................................. 6

Fiber Optic Specifications ................................................................................................................ 6

Transmission Distances (typical) .............................................................................................. 6

Launch Power & Sensitivity ....................................................................................................... 6

Rear Panel........................................................................................................................................... 7

Functional Description ...................................................................................................................... 8

Chapter 2 - Installation ............................................................................................................................ 9

Unpacking the Unit ............................................................................................................................ 9

Equipment Location .......................................................................................................................... 9

Power Supply...................................................................................................................................... 9

T1/E1 Connection .............................................................................................................................. 9

Dry Contact Alarm Switch (optional) .............................................................................................. 9

Installation Procedure....................................................................................................................... 9

TC1630R/S's Configuration ...........................................................................................................10

System Start Up ...............................................................................................................................11

Chapter 3 - Troubleshooting ................................................................................................................. 12

General ..............................................................................................................................................12

All LEDs are Off................................................................................................................................12

Alarm LED .........................................................................................................................................12

Optic Cable Types............................................................................................................................12

Calculating the Fiber Optic Loss Budget .....................................................................................12

Cable Connection Verification .......................................................................................................13

Dry Contact Alarm Relay.................................................................................................................13

Chapter 4 - Bench Tests ........................................................................................................................ 14

General ..............................................................................................................................................14

Test Equipment Requirements ......................................................................................................14

Pre-Installation Tests.......................................................................................................................14

Local Loopback Test ........................................................................................................................14

Optical Loopback Test .....................................................................................................................15

Remote Optic Loopback Test .........................................................................................................15

Chapter 5 - Component Placement ...................................................................................................... 16

Chapter 6 - Specifications ..................................................................................................................... 17

Appendix A.............................................................................................................................................. 18

Setting the E1 Interface Impedance .............................................................................................18

Appendix B.............................................................................................................................................. 19

Electrical Signal Cable Connection...............................................................................................19

Appendix C.............................................................................................................................................. 20

19" Rack with Dual Power Cards ...................................................................................................20

Appendix D.............................................................................................................................................. 22

Return Policy ....................................................................................................................................22

Warranty ............................................................................................................................................22

- 3 -

TC1630R/S User's Manual

TC1630R/S

TERMINATION

OPTIC

OPTIC

OPTIC

OPTIC

Rev. 2.5

Chapter 1 - Overview

Description

The Model TC1630R/S is a T1/E1 Fiber Optic Modem that converts analog T1 or E1 signals to digital fiber
optic signal and vice versa. TC1630R is for 19" rackmount and TC1630S is for standalone unit. Both have
the same functions and features, the only difference is power connectors. For convenience, TC1630R/S and
TC1630 will be used interchangeably throughout this manual.

TC1630 offers advanced features such as digital transmission, jitter removal and a field replaceable Line
Interface Module. Because it is based on modern FPGA (Field Programmable Gate Array) technology, the
IC chip counts are reduced to a minimum, hence offering extremely low power consumption (less than 3
watts) and higher reliability.

Transparent to the framing format, the TC1630R/S’s T1/E1 interface shapes the transmit pulse to support
CCITT G.703, or, for connecting to DSX-1 cross connects, copper line distances are from 0 to 655 feet. The
internal elastic buffer removes jitter from transmit data.

The TC1630R/S has multiple LED indicators to ease installation and troubleshooting. These LEDs indicate
power, operating voltage, alarm status, local and remote T1/E1 signal loss, bipolar violations, all ones warning,
Optic signal sync active and more. Eight DIP switches, accessible from the front panel, control settings for
Line Code, Line Length, Local Loopback and Remote Loopback. The dry contact alarm relay switch
provides remote alarm monitoring capability.

The TC1630R/S is compatible with all types and sizes of fiber optic cable. Fiber optic connectors are ST
(optional FC). T1 or E1 signal can be connected to two pairs feed-thru detachable terminals or a RJ-48C
connector at the rear panel. Input power is 12V DC or 115/230V AC with an external power cube. Alternate
power sources are available as an option (see Chapter 6 - Specifications).

Note: The terms "TC1630R/S" and "TC1630" are used interchangeably in this manual.

TC1630R/S

T
1

/
E
1

CHANNEL

BANK/

CUSTOMER

DEVICE

CSU/DSU

T

1

/

E

1

T

1

/

E

1

Rx

Tx

Rx

Tx

T
1

/
E
1

Figure 1. Typical Point-to-Point T1/E1 Application

- 4 -

LOSRLOS B

A

PWR

VccSYNC

ALM

R

x

T

x

OPTIC

LINE CODE

RxOPT

Front Panel

TC1630R/S User's Manual

Rev. 2.5

TCCOMM.COM
Made in U.S.A.

1 2 3 4

1 2 3 4

TLB

RM

LOCLB

LEN 2

5 6 7 8

LEN 1

T1/E1 FIBER OPTIC MODEM

1
2
3

LEN0

HD B3

B8ZS

LAIS

AMI

1 2 3 4

T1/E1 LINE LEN

266
399

RMT LOC

LOOP BACK TEST

CSU133

533

655

AMI
B8ZS

HDB3

L

Figure 2. TC1630R/S's Front Panel

LEDs Functions

Alarm-

ALM: Alarm indicator. The Alarm LED will light when following conditions occur:

The unit is in a diagnostic mode.
When an invalid line code or line length is set.
Optic signal is lost.
Local T1/E1 signal is lost or all ones signal is received from customer's device.
Remote T1/E1 signal is lost.
When the "Line Distance" setting is set as "1 0 0" (when SW5 is on, and both SW4 and SW3 are
Off).

Power Supply Status-

Power A/B: These LEDs indicate which power source on the rear panel the unit is drawing from. If power redundancy is

utilized, both LEDs will light.

Vcc: +5V Voltage indicator. This LED should light whenever power is connected to the unit. It indicates the

correct operating voltage is being derived from the power source.

Optic Signal Status-

RxOPT: Solidly lit, it indicates optical signal received.

Flashes when the optical signal is lost.

SYNC: Indicates a valid composite signal is being received.

Configuration Setting-

AMI/B8ZS/HDB3: These LEDs indicate the T1/E1 line code setting (SW6, 7, 8).CSU: Channel Service Unit indicator. This

LED will be lit whenever the minimum T1 Line Length is set (see Configuration Table - page 10).

133-655/CSU: These LEDs indicate the T1 Line Length distance setting (SW3, 4, 5).

Local T1/E1 status and warning-

LAIS: When flashing, it indicates "all ones" signal received from user's equipment.
LLOS: When flashing, it indicates the loss of the T1/E1 signal from local user's equipment.
BPV: Bipolar Violation LEDs. These LEDs light when bipolar violations (Line Code violations) are detected. The

severity of the violation is represented by three LEDs. Higher BPV rates cause more LEDs to light.

LOC: Indicates the Local Loopback function is enabled (SW2 is On).

Remote T1/E1 status and warning-

RLOS: When flashing, it indicates the loss of the T1/E1 signal from remote user's equipment. This LED will be Off

when no fiber cable is connected or the fiber cable is bad.

RMT: Indicates the Remote Loopback function is enabled (local SW1 is On).

- 5 -

TC1630R/S User's Manual

ON

123

4

567

8

Rev. 2.5

DIP Switch Functions

Slide switch to the Right (On) position to activate the function.

1 2 3 4

1 2 3 4

RMTLB

LOCL B

LEN2

LEN1

LEN0

HDB3

B 8ZS

A MI

AMI/B8ZS/HDB3: These switches select the Line Code (see Figure 5).
LEN0/LEN1/LEN2: These switches define the DSX-1 cross connect distance. There are 5 partitions to

choose from. In a T1 application, this is the length of twisted pair cable connecting the TC1630R/S to the
user's equipment, which may be a CSU or DSU. The cable lengths can be from 0 to 655 feet (see Figure

5).
Local LBT: This switch initiates the Local Loopback function. The T1/E1 signal is received and decoded,

then looped back to the T1/E1 "out" terminals for diagnostic testing.
Remote LBT: This switch activates remote unit into Remote Loopback function. The composite optic

signal is transmitted to remote unit and decoded, then looped back to local unit.

Fiber Optic Specifications

Transmission Distances (typical)

The TC1630R/S is compatible with all popular sizes and types of fiber. Transmission distances up to 3km*
are typical over Multimode fiber at 850nm and 4km* at 1310nm. Distances to 35km* are typical over Single
Mode fiber at 1310nm.

Launch Power & Sensitivity

Transmitter: LED/ELED; typical Launch Power - -19dBm* (850nm/1310nm MM, @62.5/125µm)

-15dBm* (1310nm Single Mode, @9/125µm)

Receiver: PIN Diode; typical Sensitivity - -35dBm* (850nm/1310nm MM, @62.5/125µm)

-35dBm* (1310nm Single Mode, @9/125µm)

*Launch power, sensitivity and distance are listed for reference only. These numbers may vary. Contact factory for
higher loss budget requirements.

- 6 -

Rear Panel

T1/E1 Signal Input, Output

Normal open

x

TC1630S Rear Panel

24VDC12VDC

125VDC48VDC

NOTE: TC1630 STAND-ALONE
VERSION SHOWN

TC1630R/S User's Manual

Rev. 2.5

IN OUT

PWR A PWR B

7 8

Dry Contact (Alarm)

Rating: 50 VDC @ 500ma ma

+ - + -

Power

Rating: 12VDC @250mA (typical)
24VDC @125mA
48VDC @63mA
125VDC @25mA

(typical)

(typical)

(typical)

+ - + -

T1/E1 Signal Input, Output

Terminal Blocks

1 234 5 6

RJ-48C Female Connector

* Note 1: The T1/E1 signal can be connected to either the terminal block connectors or the RJ-45F

connector as shown above on the rear panel, but not on both at the same time.

* Note 2: The T1/E1 signal is bipolar, independent of the polarity. Polarity on the "IN" & "OUT" terminal

block connector shown above is shown for reference only.

Figure 3. TC1630S Rear Panel

- 7 -

TC1630R/S User's Manual

Replaceable T1/E1

to T1/E1 line

from T1/E1 line

TC1630R/S

External DIP Switches (accessible from front panel)

Line

Code

Rev. 2.5

Functional Description

As shown in figure 4, the TC1630 consists of five basic function blocks: DIP switches, LEDs, T1/E1
interface, T1/E1 signal processor and optic interface.

DIP switches are used to configure the TC1630 according to a customer's application such as line code and
line distances. LEDs are used to display corresponding DIP switches settings, power supply status, optic
signal status, signal warnings, alarm, etc... the T1/E1 interface converts T1/E1 analog signals to digital
signals and provides local and remote loopback function. The signal processor composes T1/E1's timing and
data to a bit stream. The optic interface converts the electrical bit stream to an optic signal and vice versa.

to optic

cable

RxA
TxA

Optic interface

Power

Vcc Alarm Optic

A,B

Remote

Local

Loop

Loop

Test

Test

B8ZS/HDB3

T1/E1 Signal Processor

Local

Loss

Remote

Loss

Sync

LED Indicators on front panel

AMI or

Local
Loop

back

Remote

Loop

back

Line Length

1,2,3

All

Ones

Warning

Bipolar

Violation

Setting

line Interface Module

Elastic Buffer

Line Driver Line Receiver

Line

length

Setting

Figure 4. TC1630R/S Functional Diagram

- 8 -

TC1630R/S User's Manual

Rev. 2.5

Chapter 2 - Installation

Unpacking the Unit

Before unpacking any equipment, inspect all shipping containers for evidence of external damage caused
during transportation. The equipment should also be inspected for damage after it is removed from the
container(s). Claims concerning shipping damage should be made directly to the pertinent shipping agencies.
Any discrepancies should be reported immediately to the Customer Service Department at TC Communi­cations, Inc.

Equipment Location

The TC1630R/S should be located in an area that provides adequate light, work space, and ventilation. Avoid
locating it next to any equipment that may produce electrical interference or strong magnetic fields, such as
elevator shafts or heavy duty power supplies. As with any electronic equipment, keep the unit from excessive
moisture, heat, vibration, and freezing temperatures.

Power Supply

The TC1630S is powered by an external DC power adapter rated 12VDC @250mA. There are two power
jacks at the rear panel for power redundancy. TC1630R is the rackmount version of the TC1630S. It can
be inserted into the card slot when power is on (hot swapable).

T1/E1 Connection

Two pairs of terminal block connectors and/or an RJ-45F connector are provide for the connection of the
T1/E1 wire pairs. When viewing the rear panel, the left pair of terminal block connectors are for T1/E1 signal
going into the TC1630R/S (receive), while the right pair of terminal block connectors are for the transmit
signal coming out of the unit. Note: The T1/E1 signal can be connected to either the terminal block connectors
or the RJ-45F connector, but not on both at the same time, refer to page 7.

Dry Contact Alarm Switch

A terminal block connector at the rear panel provides for the Dry Contact Relay Alarm. Normally in the
CLOSED position, any alarm condition will force the switch to the OPEN position. This relay can be
configured by the user if necessary (see Chapter 3 - Troubleshooting).

Installation Procedure

The TC1630R/S is designed for quick and easy installation. First, configure the modem for your specific
application by setting the Line Code and Line Length DIP switches. Once configured, you can connect the
optical, T1/E1 signal source and power.

Installation Procedure:

1. Select the Line Code (SW6, 7, 8).

2. For T1, select the Line Length (SW3, 4, 5).

3. Connect the T1/E1 signal source, either terminal blocks or RJ-48C connector.

4. Connect the optic cables. Verify single mode or multimode optic cable according to your TC1630

ordered. Using incorrect optic cables will result in a malfunction. Verify optic connections.

5. Connect the power. All the LEDs should flash for approximately three seconds.
After installation is completed, it is an excellent idea to verify the optical cable loss. This reading will both

verify the integrity of the circuit and provide a benchmark for future troubleshooting efforts.

- 9 -

TC1630R/S User's Manual

Rev. 2.5

TC1630R/S's Configuration

1. Select the application's Line Code: SW6, 7 or 8. Slide the appropriate switch to the Down (On) position.
AMI: set SW8 to the Down (On) position.

B8ZS: set SW7 to the Down (On) position.
HDB3: set SW6 to the Down (On) position.

Only one of the above switches should be selected, as any two switches in the Down (On) position will cause
the "Alarm" LED to flash.

2. Select the Line Length setting for T1: SW3, 4, 5 (see Figure 5). Slide the appropriate switches to the
Down position.

Depending on the distance between the TC1630R/S and the T1 cross connect, set the Line Length for the
T1 transmit line driver according to the table below. When connecting to DSX-1 cross-connects for Line
Lengths ranging from 0 to 655 feet, see DIP Switch Functions on page 6. There is no need to set the Line
Length for E1 applications; set SW3, 4, and 5 to the Up (Off) position.

Note: The “Line Length” setting “1 0 0” is invalid. If “Line Length” is set as (1 0 0), then the Alarm
LED will flashes, indicating the setting is invalid.

Legend:
0 = Off 1 = On

DSX-1

ABAM

AMI

CSU

NETWORK

INTERFACE

DSX-1
ABAM

B8ZS

CSU

NETWORK

INTERFACE

HDB3

PCM-30,

G.703

0-133 feet
133-266 feet
266-399 feet
399-533 feet
533-655 feet

0-655 feet

0-133 feet
133-266 feet
266-399 feet
399-533 feet
533-655 feet

0-655 feet

0-655 feet

L I N E C O D E

SW8 SW7 SW6

1
1
1
1
1

1
1

0
0
0
0
0

0
0

0 0 1

0
0
0
0
0

0
0

1
1
1
1
1

1
1

0
0
0
0
0

0
0

0
0
0
0
0

0
0

L I N E L E N G T H

SW5 SW4 SW3

1
0
1
0
1

0
1

1
0
1
0
1

0
1

0 0 0

1
0
0
1
1

1
1

1
0
0
1
1

1
1

0
1
1
1
1

0
0

0
1
1
1
1

0
0

LOCAL & REMOTE

LOOPBACK TESTS

0
0
0
0
0

0
0

0
0
0
0
0

0
0

0 0

0
0
0
0
0

0
0

0
0
0
0
0

0
0

Figure 5. TC1630R/S Configuration Table

- 10 -

TC1630R/S User's Manual

Rev. 2.5

3. Connect the T1 or E1 signal.
T1 signal connection for 100 ohm line: Connect the incoming T1 signal (from your equipment) to the "in"

terminal blocks on the rear panel; they are not polarity sensitive. A valid T1 signal will cause the "LLOS"
LED turn to off. Connect the outgoing T1 signal (received from the optical cable) to the "out" terminal blocks.

E1 signal connection (The E1 interface can be used for either 75 or 120 ohm line - see Appendix A):
75 ohm line: Connect the incoming signal (from your equipment) to the "in" BNC adapter. Connect the

outgoing signal (received from optical cable) to the "out" BNC adapter.
120 ohm line: If twisted-pairs are used, connect the wires in the same way as the T1's wire. If dual coaxial

is used, connect the cores to the "in" terminal blocks for the incoming signal and to the "out" terminal blocks
for the outgoing signal (each cable has two cores & a shield).

4. Verify optical connections:
Make sure the local TC1630's optic "Tx" is connected to the remote TC1630's optic "Rx" (and vice-versa).

5. Connect power to both units.

System Start Up

When power is initially connected, the following conditions should be observed:

1. The "POWER A" and/or "B" LED is lit.

2. The "LLOS" LED is Off, indicating a valid T1 or E1 signal input.

3. The "ALARM" LED should be Off.

Start the T1/E1 signal transmission:

4. The "POWER A" and/or "B" LED stays lit.

5. The "SYNC" LED should be lit, indicating a valid received optic signal.

6. One of the line length LED should be lit. If "133" is selected, "CSU" LED should be lit too.

Note: If the modem is not functioning properly at this point, please refer to Chapter 3 - Troubleshooting.

- 11 -

TC1630R/S User's Manual

Rev. 2.5

Chapter 3 - Troubleshooting

General

Alarm conditions occur whenever an optical problem or "fault" condition is detected by the TC1630.

All LEDs are Off

If no LEDs are lit on the unit, check the DC power supply, terminal block connector plug, change to alternate
power jack on the rear panel, fuses A and/or B indicated on page 17, and/or the power source. If the problem
persists, contact the Technical Support Department at TC Communications, Inc.

Alarm LED

When an alarm condition is detected, the Alarm LED will flash. The following fault conditions will cause
the alarm to be triggered:

1. Optic signal lost from optic "Rx."

2. Optic signal is marginal, which causes invalid data packets to be received; the "SYNC" LED will be "Off."

3. Received "space" or "mark" from local T1/E1 device.

4. An invalid Line Code setting exists.

5. The Line Length setting does not match the Line Code.

6. The local or remote T1/E1 signal is lost; the "LLOS" or "RLOS" LED will be also be flashing.

Note: The "RLOS" LED will be Off when there is no fiber cable connected or the fiber cable is bad.

Optic Cable Types

Conventionally, fiber optic cable with yellow-colored insulation is used for Single Mode applications; gray
or orange-colored insulated cable is for Multimode use. If Multimode cable is used in a Single Mode

application, the test results could be erroneous and confusing.

Calculating the Loss on the Fiber

The fiber optic link and/or connectors are frequently the source of various problems. Check out the
connectors and the integrity of the link first. Ideally, the link should be calibrated for total loss after the
installation has been completed. This will accomplish two things: (1) it will verify that the total loss of the
link is within the loss budget of the device and (2) it will provide a benchmark for future testing. For example,
a system that has been tested as having 6dB total loss when installed and suddenly tests out as having a loss
of 10dB probably has a connector or link problem.

These are the reference values we used to calculate loss on the fiber :

Multimode 850nm : 3 dB loss per km on 62.5/125µm cable*
Multimode 1310nm : 2 dB loss per km on 62.5/125µm cable*
Single Mode 1310nm : 0.5 dB loss per km on 9/125µm cable*
Single Mode 1550nm : 0.25 dB loss per km on 9/125µm cable*

*These numbers are listed for reference only. We recommend an OTDR reading be used to determine actual link loss.

- 12 -

TC1630R/S User's Manual

Rev. 2.5

Cable Connection Verification

Electrical Cables:

1. Make sure all electrical signal connections match the pin assignments (I/O) for the device (check User's

Manual if necessary).

2. Verify signal connections by checking the status LEDs on the front panel of the TC1630R/S. If the

"LLOS" LED is flashing, a transmit signal is not being detected from the local device. If the "RLOS"
LED is flashing, no response signal is being detected from the remote device.

3. Verify that the correct Line Code setting (and Line Length setting for T1) has been configured and that

the appropriate LEDs light to match the setting selected.

4. Conduct a Local Loopback Test to help isolate an electrical interface problem (see Chapter 4 - Bench

Tests).

Optic Cables:

If the "SYNC" LED on the front panel is flashing or Off, this is an indication that the optic signal is not being
correctly received. Usually, unsecured fiber optic connectors or faulty cable are to blame. A good
connection is indicated by the "SYNC" LED on the front panel being solidly lit. This indicates that the
receiving cable is correctly connected to Remote unit's optic "Tx."

Dry Contact Alarm Relay

TC1630 has built-inDry contact relay switch. The status is for the relay switch is "normal open". It is
triggered by following major alarm conditions:

Optic signal lost
Local T1/E1 signal lost
Local user's T1/E1 device is sending "mark" data pattern
Local user's T1/E1 device's signal is causing bipolar violations
Invalid line code setting
Invalid line length setting
The electrical rating for the dry contact relay switch is

50VDC max
500 mA max.
switching power is 10 watts max.

- 13 -

TC1630R/S User's Manual

Local Loopback

IN

Optic Rx

Optic Tx

Rev. 2.5

Chapter 4 - Bench Tests

General

It is highly recommended to conduct bench tests before actual installation. Bench testing allows the user to
become familiar with all the functions and features of the TC1630 in a controlled environment. Knowledge
of the TC1630's functions and features will ease installation and troubleshooting efforts later on.

Test Equipment Requirements

End-user equipment required for testing:

1. Model 5575A T1 Micro BERT (Bit Error Rate Tester) Test Set with Terminal Block Connectors.

2. Two optical cable jumpers (patch cords) with appropriate connectors.

Pre-Installation Tests

1. Make sure the appropriate power supply accompanies the TC1630R/S unit (see page 9).

2. To verify that the unit functions properly, connect power to the unit's "PWR A" or "B" terminal blocks

(be sure to observe correct polarity) without connecting any other cables to the unit.

3. On the front panel, the appropriate green Power "A" or Power "B" LED should be illuminated (depending

on whether you plug into the "A" or "B" terminal on the back of the unit). Both lights should be on if you
utilize power redundancy (power is plugged into both "A" and "B" on the rear panel).

4. The "ALARM" and "LLOS" LEDs should be flashing.

5. The "Vcc" LED should be illuminated. Please note: all other LEDs can be in a random state (flashing,

solidly lit, or off) as only upon proper receipt and transmission of a signal will the TC1630R/S unit set its
LEDs appropriately for normal operation. Proceed to the Local Loopback Test.

Local Loopback Test

The purpose of this test is to verify 1) the signal source recognition and 2) the connection between the
incoming signal and the TC1630R/S's terminal blocks.

1. Make sure your BERT tester is turned on and configured with the same setup as the TC1630R/S (and

your application).

2. Plug in the terminal blocks from the BERT tester to the TC1630R/S’s connectors on the rear panel.

When the input and output are connected correctly, the "LLOS" LED on the TC1630R/S will turn Off.

3. Slide SW2 (LOCAL LBT) to the Down (On) position. The "LOC" LED should flash on the front panel.

4. Make sure the "TERM" or "BRIDGE" LED on the tester is lit, and that the tester is in the "RUN" mode.

The tester should indicate a "SYNC" signal.

5. If any other LEDs illuminate or flash, make sure that all

DIP switches on the TC1630R/S are in the correct

OUT

T1/E1 Line

Interface

Local loopback

position, then reset the BERT tester. You should not see
any bit errors. To verify this, inject an error using the
BERT tester to see if it will be recorded by the tester,
then verify that no additional errors appear after the user
injected error. Proceed to the Optical Loopback Test.

T1/E1
BERT

Tester

- 14 -

TC1630R/S User's Manual

Local Optic Loopback

Optic Local loopback

Remote Optic Loopback

IN

Remote Optic loopback

T1/E1 Line

Rev. 2.5

Optical Loopback Test

At any time you may use a short optic cable to loopback the unit's Optic "Tx" to "Rx." The "SYNC" LED
on the front panel should light (solid) when a good optic signal is received. This test verifies the optic
transmitter's function as well as the receiver's. Upon successful completion of this test, proceed to the
Remote Loopback Test.

T1/E1
BERT

Tester

T1/E1 Line

IN

OUT

Interface

Optic Rx
Optic Tx

Remote Optic Loopback Test

1. Connect a second TC1630R/S unit. As with the first unit, follow the bench test steps on the previous

page. When you have completed the Local Loopback & Optical Loopback tests for the second unit,
proceed to the next step.

2. Remove the optical jumper cable from the local unit's "Rx" and connect it to the second unit's optic "Rx."

Add a second optical jumper cable to connect the local unit's "Rx" to the second unit's "Tx."

3. Verify that both TC1630R/S units have the same Line Code and Line Length settings.

4. On the local TC1630R/S, slide SW1 (Remote Loopback) to the Down (On) position. The "RMT" LED

on the remote TC1630R/S's front panel should flash, as well as the "LLOS" and "ALM" LEDs.

5. Make sure the "TERM" LED on the tester is lit, and that the tester is in the "RUN" mode. The tester

should indicate a "SYNC" signal.

6. If any other LEDs illuminate or flash on the unit, make sure that all DIP switches on both of the TC1630's

are in the correct position, then reset the BERT tester. You should not see any bit errors.

7. At this point, both units tested will have passed all electrical and optical tests and will have been verified

that they are functioning properly. Proceed to the next TC1630 unit to be tested or begin verifying other
equipment and cabling in your application (if you have not already done so).

T1/E1
BERT

Tester

IN

T1/E1 Line

Interface

OUT OUT

Optic Rx
Optic Tx

- 15 -

Optic Rx

Optic Tx

Interface

Chapter 5 - Component Placement

U4

F1

123

4

567

8

O

N

432

1

SW1

INTERFACE MODULE

Dry contact alarm relay

terminal block connectors

T1/E1 RJ-48C

and receiver

DIP switch 2

8

TC1630R/S User's Manual

Rev. 2.5

terminal block connector

T1/E1 Line interface
module

FPGA configuration
EPROM

FPGA

connector

T1/E1 input and output

SW2

FPGA

chip

Power A and B Terminal

block connectors

POWER APOWER B

+

+

--

TERMINAL

BLOCK

CONNECTORS

JP2

F2

Fuses A, B

(not used)

External

DIP switch

TxA RxA

765

LED indicators

Optic transmitter

Figure 6. TC1630R/S's Internal PCB

- 16 -

LED indicators

Chapter 6 - Specifications

Data Rates

T1 (per channel) ........................................................................................... 1.544 Mbps

E1 (per channel) ........................................................................................... 2.048 Mbps

Line Code ....................................................................................... AMI, B8ZS, or HDB3

Optical

Transmitter ...................................................................................................... LED/ELED

Receiver ..........................................................................................................PIN Diode

Wavelength ............................................................................ 850nm/1310nm Multimode

....................................................................................................... 1310nm Single Mode

Fiber Optic Connectors ..................................................................... ST* (FC optional)

Loss Budget ........................................... 15dB Multimode 850nm/1310nm @62.5/125µm

...................................................................................... 20dB** Single Mode @9/125µm

Electrical

Interface .................................................................................................................. T1/E1

T1 Connector (100 ohm) ......................................................................... Terminal Block

E1 Connector (120 ohm) ......................................................................... Terminal Block

E1 Connector (75 ohm) .............................................Terminal Block with BNC Adapter

TC1630R/S User's Manual

Rev. 2.5

System

Bit Error Rate ...................................................................................... 1 in 1010 or better

Visual Indicators .............................................. POWER A, POWER B, ALM, Vcc, SYNC,

.....................................................................AMI, B8ZS, HDB3, 133, 266, 399, 533, 655,

..................................................... LAIS, LLOS, LOC, RLOS, RMT, BPV (3 LEDs), CSU.

Dry Contact Alarm.................................................................... 50VDC, 500ma (10watts)

Power Source

Standard................................................................. 12V DC(9-14VDC) @250ma (typical)

Optional ......................................................115V or 230V AC with external power cube

Optional .......................................... 24VDC (18-36VDC), 48VDC (36-75VDC), or 125VDC

Temperature

Operating ................................................................................................... -10oC to 50oC

Hi-Temp...................................................................................................... -20oC to 70oC

Storage....................................................................................................... -40oC to 90oC

Humidity........................................................................................ 95% non-condensing

Physical

Rack Mountable Card

Height ........................... (17.7 cm) 7.0"

Width ............................ (3.2 cm) 1.25"

Depth .......................... (14.8 cm) 5.75"

Weight ..................... (192 gm) 5.44 oz

Stand Alone Unit

Height ........................... (18.2 cm) 7.2"

Width ..............................(3.5 cm) 1.4"

Depth .......................... (16.6 cm) 6.60"

Weight ..................... (512 gm) 14.5 oz

*ST is a trademark of AT&T

**Contact factory for requirements higher than 20dB.

- 17 -

TC1630R/S User's Manual

Rev. 2.5

Appendix A

The E1 interface impedance on the TC1630R/S is user configurable by changing the jumpers on the interface
module. Please follow the instructions below to set the E1 impedance appropriately.

Setting the E1 Interface Impedance

1. Unscrew the 2 front panel screws and slide the unit out of it's housing.

2. Locate the interface module at board location JP2 (the board plugs vertically into the main board's socket).

3. For 75 ohm impedance, the jumpers on the interface module should be set as follows:

JP2------- removed
JP1,3,4,5,6------- installed

Figure 7. TC1630R/S's E1 (75 ohm) Interface Module Configuration

4. For 120 ohm impedance, the jumpers on the interface module should be set as follows:
JP1------- installed
JP2,3,4,5,6------- removed

5. Slide the unit back into the housing and secure the 2 front panel screws.

Figure 8. TC1630R/S's E1 (120 ohm) Interface Module Configuration

- 18 -

TC1630R/S User's Manual

TC1630

Terminal Block

IN

OUT

(Transmit to Network)

TC1630

Terminal Block

User's Device

IN

OUT

Rev. 2.5

Appendix B

Electrical Signal Cable Connection

The user's device may have a DB15 or RJ45 connector. The following connection diagrams illustrate the
signal flow direction and pin assignments typically used with these connectors.

Note: The polarity of the T1/E1 signal is bipolar, independent of the polarity. Polarity is shown for reference
only.

User's Device

DB15 Connector

Connectors

12345678

9101112131415

(Transmit to Network)

(Transmit to Network)

(Receive from Network)

(Receive from Network)

Note: Pins 7, 8, 12, 14 and 15 are not used on the DB15 connector. Pins 5, 6, 10 and 13 are reserved for Telco use.

Figure 9. DB15 Connection Diagram

RJ45 Connector

1
2
3
4
5
6
7
8

(Transmit to Network)

(Receive from Network)

(Receive from Network)

Connectors

Note: Pins 3 and 6 are not used on the RJ45 connector. Pins 7 and 8 are used for optional shield connections.

Figure 10. RJ45 Connection Diagram

- 19 -

TC1630R/S User's Manual

Secondary power card

Rev. 2.5

Appendix C

19" Rack with Dual Power Cards

The picture shows the 19" rack with dual power supply cards. It consists of two subassemblies; TCRM192­D-48 which is the 19" rack with dual 48VDC to 12VDC power cards and the TCRM192-BKPL, which is
the power back plane. The power card can be ordered for universal AC input or 24VDC input. The output
of each kind of power card is 12VDC, different input voltage has different output power rating. They are
listed as following:

TCRM192-D-48: 19" rack with dual power cards, each has 48VDC(36-75VDC) input, 12VDC output and
150 Watts.

TCRM192-D-24: Same as above but with 24VDC(18-36VDC) input, 12VDC output and 100 Watts output
power.

TCRM192-D-01: 19" rack with dual power cards, each has universal AC input (90VAC to 240VAC, 50Hz
to 60Hz) with 12VDC output. Maximum output power is 65 Watts. The diagram on the next page shows
the equivalent circuits.

The add-on subassembly to the 19" rack is TCRM-bkpl, which is a power strip PCB connected to both power
cards via two pair cable assembly. This power back plane has built-in fuses and power indicators to ease
installation and trouble-shooting.

Primary power card

Power indicators
for power A,B

Fuse A,B
for primary
power card

Fuse A,B
for secondary
power card

Power indicators
for power A,B

48(24)VDC input
for primary
power card

AC power input
for primary
power card

48(24)VDC input
for secondary
power card

AC power input
for secondary
power card

- 20 -

TC1630R/S User's Manual

B-B+A-A++-+_+_-++_+

_

OUTPU

T

ER CARD

TC1630 RACKMOUNT POWER SUPPLY

MAX OUTPUT POWER: 150

W

48 VDC12 VDC12 VDC12 VDC12 VDC12 VD

C

+_+-_+_+-

+

FUSE BFUSE AINPUT

+

_

Rev. 2.5

B+

A-

PWR B

PWR A

A+

GND

POWER BACKPLANE

EDGE CONNECTOR TO

A+A-B+

B- B-

GND

FUSE A

FUSE B

PWR B

PWR A

A+

A-B-B+

OUTPUT

48 VDC

12 VDC

12 VDC

12 VDC

12 VDC

12 VDC

POWER CARD POW

TC1630R CARD (10 X)

- 21 -

INPUT @36-75V

INPUT

OUTPUT @12V + 1% , (5 OUTPUTS)

TC1630R/S User's Manual

Rev. 2.5

Appendix D

Return Policy

To return a product, you must first obtain a Return Material Authorization number from the Customer
Service Department. If the product’s warranty has expired, you will need to provide a purchase order to
authorize the repair. When returning a product for a suspected failure, please provide a description of the
problem and any results of diagnostic tests that have been conducted.

Warranty

Damages by lightning or power surges are not covered under this warranty.

All products manufactured by TC Communications, Inc. come with a five year (beginning 1-1-02)
warranty. TC Communications, Inc. warrants to the Buyer that all goods sold will perform in accordance
with the applicable data sheets, drawings or written specifications. It also warrants that, at the time of sale,
the goods will be free from defects in material or workmanship. This warranty shall apply for a period of
five years from the date of shipment, unless goods have been subject to misuse, neglect, altered or destroyed
serial number labels, accidents (damages caused in whole or in part to accident, lightning, power surge, floods,
fires, earthquakes, natural disasters, or Acts of God.), improper installation or maintenance, or alteration or
repair by anyone other than Seller or its authorized representative.

Buyer should notify TC Communications, Inc. promptly in writing of any claim based upon warranty, and
TC Communications, Inc., at its option, may first inspect such goods at the premises of the Buyer, or may
give written authorization to Buyer to return the goods to TC Communications, Inc., transportation charges
prepaid, for examination by TC Communications, Inc. Buyer shall bear the risk of loss until all goods
authorized to be returned are delivered to TC Communications, Inc. TC Communications, Inc. shall not be
liable for any inspection, packing or labor costs in connection with the return of goods.

In the event that TC Communications, Inc. breaches its obligation of warranty, the sole and exclusive
remedy of the Buyer is limited to replacement, repair or credit of the purchase price, at TC Communications,
Inc.’s option.

To return a product, you must first obtain a Return Material Authorization (RMA) number and RMA form
from the Customer Service Department. If the product’s warranty has expired, you will need to provide a
purchase order to authorize the repair. When returning a product for a suspected failure, please fill out RMA
form provided with a description of the problem(s) and any results of diagnostic tests that have been
conducted. The shipping expense to TC Communications should be prepaid. The product should be properly
packaged and insured. After the product is repaired, TC Communications will ship the product back to the
shipper at TC's cost to U.S. domestic destinations. (Foreign customers are responsible for all shipping costs,
duties and taxes [both ways]. We will reject any packages with airway bill indicating TC communications
is responsible for Duties and Taxes. To avoid Customs Duties and Taxes, please include proper documents
indicating the product(s) are returned for repair/retest).

- 22 -