TC Communications TC1504 User Manual

TC1504

RS-422/RS-449 SYNC

FIBER OPTIC MODEM

(Rev. A0.1)

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 specifica-

tion. 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.

TC1504 User's Manual

Rev. 1.5 (A0.1)

Table Of Contents

Description ......................................................................................................................... 3

Operational Theory ........................................................................................................... 3

Electrical Specifications & Virtual Connection ............................................................... 3

Power Requirements ........................................................................................................ 3

LEDs, DIP Switches & Connectors .................................................................................. 4

Optical Specifications ....................................................................................................... 4

Physical Characteristics ................................................................................................... 4

Temperature ...................................................................................................................... 4

Transmit Data & Transmit Clock Wave Forms ................................................................ 5

Installation & Troubleshooting ......................................................................................... 5

Warranty & Return Policy ................................................................................................. 6

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Rev. 1.5 (A0.1)

Description

The TC1504 Fiber Optic Modem links data communication equipment requiring an RS-422A interface. It
supports synchronous data speeds (with an external clock) up to 2.048 Mbps and is equipped with a male
DB-37 connector. A four-position DIP Switch provides for Local & Remote Loopback functions, Slave
Clock operation and DCE/DTE device selection. There are six LED indicators that reflect operational status
such as Terminal Clock (TT), Transmit data (SD), Receive clock (RT), Receive data (RD) and DC power
supply.

The TC1504 is available in either Multimode or Single Mode versions. The Single Mode version supports
transmission distances up to 30km over Single Mode (1310nm) fiber optic cable. Fiber optic connectors can
be either ST or (FC optional) type.

Operational Theory

The TC1504 latches onto the RS-422/RS-449 data by the received clock signal (from user's equipment) to
produce an encoded optic signal (with an embedded clock). The composite optic signal is then transmitted
by the optic transmitter through the optic cable to a remote TC1504's optic receiver. The received optic signal
is processed and decoded to separate data and clock from the composite optic signal and then transmitted
out to a remote device.

Electrical Specifications & Virtual Connection

Interface: RS-422/RS-449
Data Rate: Synchronous DC to 2.048 Mbps
Connector: DB37 Male (DCE/DTE switchable)

Power Requirements

A. The TC1504 is designed to draw very low power from an external power adapter.

The input DC voltage is from 9V to 12V and current is 220mA to 300mA for the
850nm and 1310nm versions.

B. Should an external power adapter require replacement, use one with the following

specifications: 12VDC @800mA with a terminal block connector. You may order
it from TC Communications.

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LEDs, DIP Switches & Connectors

TC1504 User's Manual

Rev. 1.5 (A0.1)

Optical Specifications (at data rate 1.544Mbps)

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

-16dBm* (1310nm Single Mode, @9/125µm)

Receiver: PIN Diode; typical Sensitivity: -34dBm* (850nm/1310nm Multimode, @62.5/125µm)

-36dBm* (1310nm Single Mode, @9/125µm)

Loss Budget: 850nm/1310nm MM, @62.5/125µm: 15dB

1310nm Single Mode, @9/125µm: 20dB

Distance: 850nm Multimode, @62.5/125µm: up to 3km distance*

1310nm Multimode, @62.5/125µm: up to 4km distance*
1310nm Single Mode, @9/125µm: up to 30km distance*

Wavelength: 850nm Multimode

1310nm Multimode
1310nm Single Mode

Connector: ST

FC

*Launch power, sensitivity and distance are listed for reference only. These numbers may vary.

Physical Characteristics

Height: 0.79" (2.0 cm)
Width: 4.1" (10.4 cm)
Depth: 2.96" (7.5 cm)
Weight: 5.5 oz. (121 gm)

Temperature

Operating: -10 to 50 degree C Hi-Temp(optional): -20 to 70 degree C
Storage: -40 to 90 degree C Humidity: 95% non-condensing

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TC1504 User's Manual

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Transmit Data & Transmit Clock Wave forms

Installation & Troubleshooting

A. Identify your equipment as DCE or DTE. TC1504's DTE/DCE DIP Switch has to be set to the opposite

of your equipment. For example, if you connect the TC1504 to a DTE device, set the DCE/DTE DIP
Switch (SW4) to the DCE (up) position.

B. Always connect one TC1504 and conduct a Local Optic Loopback test first. To perform the test:

1. Use a short optic cable to loop from optic "Tx" back to optic "Rx."

2. Connect the TC1504 to the user's equipment.

3. Check if the "Sync" LED is lit.

4. If the "Sync" LED is off, try sliding the DCE/DTE switch down or verify the fiber cable and

connections, then re-examine the "Sync" LED.

5. The TC1504 requires a "clock" input signal (pins 17 & 35 when set as DCE) to latch onto incoming
data; without a valid clock signal, no valid optic signal will be generated.

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TC1504 User's Manual

Rev. 1.5 (A0.1)

Warranty & Return Policy

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).

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