• Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)
  • Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)
  • Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)

Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)

Application: Communication
Type: Single-mode Fiber
Connection Structure: Sc or St Connecting Port
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US$ 71.8/Piece 1 Piece(Min.Order)
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Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM) pictures & photos
Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)
US $67.8-71.8 / Piece
Min. Order: 1 Piece
Gold Member Since 2011

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  • Overview
  • Product Description
  • Connections
  • Specifications
  • Order Information
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Overview

Basic Info.

Model NO.
ATC-277SM
Material Shape
Rectangle
Certification
RoHS, CE
Brand
Atc
Sheath Material
Iron
Weight
0.6kg
Size
100mmx86mmx26 mm
Optical Fiber Interface
Sc or St
Transmission Distance
20 Km
Wavelength
1310 Nm
Coupled Power Budget
12.1 dB
Fiber Optic Ring
Full Duplex
Point to Point Transmission
Half-Duplex and Full-Duplex
Working Temperature
-20°c to 70°c
Transport Package
Paper Box
Specification
Quality grade: CE&ROHS
Trademark
ATC
Origin
China
HS Code
8543709990
Production Capacity
50, 000PCS/Year

Packaging & Delivery

Package Size
34.00cm * 28.00cm * 22.00cm
Package Gross Weight
10.000kg
Lead Time
5 days (1 - 50 Pieces)
To be negotiated ( > 50 Pieces)

Product Description

 

Product Description

Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)
The MODEL 277SM was designed to provide the most versatile connection possible between any asynchronous serial equipment using Fiber Optic cable. It allows any two pieces of asynchronous serial equipment to communicate full or half-duplex over two fibers at typical distances up to 20KM. The converter can also be set up in "Repeater" mode to create a multi-drop master/slave configuration, allowing one serial device to talk to multiple slave devices around a fiber ring.

RS-232 data signals at up to 115.2Kbps and RS-422, or RS-485 data signals at up to 250Kbps are supported. Different standards can be mixed and matched to allow RS-232 devices to connect to your RS-422 or RS-485 system. This means the MODEL 277SM can replace converters and isolators when connecting remote devices, while providing the EMI/RFI and transient immunity of optical fiber.

The MODEL 277SM supports both the Transmit and Receive data lines, and provides full hardware control of the RS-422

/485 driver with automatic Send Data Control circuit.

Timeouts are auto detect between 0.10 and 2.2 ms. All serial connections are provided on the DB-9 male connector or 6-bit terminal, while the single-mode fiber is connected via two SC/ST/FC connectors. The unit is powered by 9-24 VDC at 250 mA max.

 

  

Connections

 

RS-232 Connections

Connection of the MODEL 277SM is simple and straight forward. The DB9 male serial connector is used for connect to RS-232 interface. The RS-232 signals are defined as a DTE device (input on Pin 2 and output on Pin 3)

 
Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)

 

RS-422 & RS-485 Connections
6-Bit Terminal RS-422 RS-485
PIN1 T+ 485+
PIN2 T- 485-
PIN3 R+ NC
PIN4 R- NC
PIN5 VIN VIN
PIN6 GND GND

 

Fiber Optic Connections

The MODEL277SM uses a separate LED emitter and photo-detector operating at 1310nm wavelength Connections

to the emitter and detector are on SC/ST/FC type connectors. One fiber is required for each connection between a transmitter and receiver. In a point-to-point configuration, two fibers are required between the two modems, one for data in each direction. A multi-drop ring configuration requires one fiber between TX and RX around the loop.

The most important consideration in planning the fiber optic link is the "power budget" of the fiber modem. This value represents the amount of loss in dB that can be present in the link between the two modems before the units fail to perform properly. This value includes line attenuation as well as connector loss. For the MODEL277SM the typical connector-to-connector power budget is 13 dB. Because 9/125um Single Mode Fiber cable typically has a line attenuation of 0.6 dB per Km at 1310 nm, the 13 dB power budget translates into 20 KM.. 

 

Specifications


Transmission Line: Dual Single-mode optical cable
Point to Point Transmission: Asynchronous, half or full-duplex
Interfaces: RS-232, RS-422, or RS-485
Data Rates:

RS-232 0 to 115.2KBPS
RS-422/485 0 to 250KBPS
Distance : RS-485/RS-422 0-1.2Km
Fiber Typical Range: Up to 20Km on Single mode glass fiber
Coupled Power Budget: 15.0 dB
Optic Wavelength: 1310 nm
Fiber Connector: 

SC(ATC-277SM-SC)
ST(ATC-277SM-ST)
FC(ATC-277SM-FC)
Connectors: 

DB-9 male for RS-232

6-Bit terminal for 

RS-422/485 connection,
Power Supply: Requires 9 - 24V VDC @ 250 mA max.
Operation temperature:-40ºC-70ºC
EMI and Safety: CE,FCC Class A
Dimensions: 96 Lx 66W x 26H(mm)
Weight: 0.40Kg 

 

Order Information

 
P/N: Fiber Type Wavelength
(nm)
Fiber Length(Km)
(nm) Fiber Length(Km) 1310 20
ATC-277SM-SC SC 1310 20
ATC-277SM-ST ST 1310 20



 

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Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)
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From payment to delivery, we protect your trading.
Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM) pictures & photos
Single-Mode Optical Fiber Modem with RS-232/422/485 Converter (ATC-277SM)
US $67.8-71.8 / Piece
Min. Order: 1 Piece
Gold Member Since 2011

Suppliers with verified business licenses

Trading Company
Number of Employees
11
Year of Establishment
2003-11-28