Allied Telesis AT-FS238 Series User manual

Datasheet | Switches
AT-FS238
2port single strand fiber media
converter,10/100TX (RJ-45) to 100FX (SC),
(1310nm TX/1550nm RX) or (1550nm
TX/1310nm RX) with distances up to 40km
Overview
The AT-FS238 media converter is a 10/100Mbps
copper to single-mode fiber media converter
which can send and receive on single strand
fiber (1310nm TX/1550nm RX) or (1550nm
TX/1310nm RX).These units are designed to be
used in pairs in a network topology to provide
point-to-point access.The AT-FS238 converts
10/100TX (RJ-45) to 100FX (SC) and will
transmit up to 40km on high quality fiber optic
cable. Both ports feature full and half-duplex
operation.The AT-FS238 is easy to install and
does not require software configuration or
management. Additionally, it can be used almost
anywhere due to its small physical size, choice of
external power supplies and options to be rack-
mounted.
Auto MDI/MDI-X
The AT
-FS238 media converter features
automatic MDI/MDI-X.The 10/100TX (RJ-45)
port automatically determines the configuration
of the porton the device to which it is
connected and then configures itself
appropriately.This feature allows you to use
either crossover cables or straight-through cable
when connecting a device to the copper port.
Smart MissingLinkTM (SML)
The MissingLinkTM feature allows the ports on
the media converter to pass the ‘Link’ status of
their connections to each other. When the
media converter detects a problem with one of
the ports, such as the loss of connection to a
node, it shuts down the connection to the other
port, thus notifying the node that the
connection has been lost.The AT-FS238 also
features Smart MissingLink (SML). This feature
monitorsnetworkconnections and provides
notification if a network segment fails. This
allows network managers to quickly identify the
source and location of a failed segment and
minimize downtime.
Key Features
•LEDs for unit and port status
•Auto MDI/MDI-X
•Mode selection button that toggles between
Link Test, MissingLink, and Smart MissingLink
•DIP switches for port configuration
•Supports half and full-duplex operation
•Data packet forwarding and filtering at full
wirespeed (10Mbps to 100Mbps, 100Mbps to
100Mbps, and 10Mbps to 10Mbps)
•Store and forward switching mode
•Automatic address learning and aging
•IEEE 802.3u compliant auto-negotiation
•External AC/DC power adapter (North
America, Continental Europe or United
Kingdom)
•Rack-mountable using optional AT-MCR12,
AT-TRAY4 or AT-TRAY1 chassis
Allied T
elesis www.alliedtelesis.com
AT-FS238
2Port Fast Ethernet Single Strand Speed/Media Converting Switch

Status Indicators
System LEDs
Power Indicates power is applied to the
converter
Per fiber port:
Link Indicates a valid receive link exists
Duplex Indicates full or half-duplex operation
Collision Indicates collision during packet
Per copper port:
Link Indicates a valid receive link exists
Speed Indicates either 10Mbps or 100Mbps
operation
Auto Indicates port is set for auto-
negotiation
FD/Collision Indicates collision during packet
transmission on the port
Indicates full or half-duplex operation
Operational Characterisitcs
Per fiber port:
Duplex Selects either full or half-duplex
operation
Per copper port:
Auto Selects auto-negotiation mode or
manual setting
Duplex Forces port to full or half-duplex
operation
(Auto-setting = manual only)
Speed Forces port to 10Mbps or 100Mbps
operation
(Auto-setting = manual only)
Operational Mode
MissingLink (ML)
Smart MissingLink (SML)
Link Test
Packet buffer 28k per port
MAC address table 8k addresses
Forwarding/filtering rate 148,880pps for 100Mbps
14,880pps for 10Mbps
Latency 14.3µsec
(64 byte packet, 100Mbps
full-duplex)
Power Characteristics
Input supply voltage 12vDC or 12-50vDC
Rated currents .5A max.
Power consumption 24W max.
Physical Characteristics
Dimensions 10.5cm x 9.5cm x 2.5cm
(4.12" x 3.75" x 1")
Weight 294g (10.4 oz)
Fiber Optic Port Specifications
Fiber Optic Transmitter
Fiber Optic Receiver
Fiber Optic Datalink
Fiber Optic Loss Specification (Benchmark)
Environmental Specifications
Operating temp. 0°C to 40°C (32°F to 104°F)
Storage temp. -20°Cto 70°C (-13°F to 158°F)
Relative humidity 5% to 90% non-condensing
(operating)
Relative humidity 5% to 95% non-condensing
(storage)
Operating and Up to 3,048m (10,000 feet)
storage altitude
Electrical/Mechanical Approvals
CE IEEE 802.3, IEEE 802.3u
Safety UL60950 (cULus), EN60950,
EN60825 (TUV)
Emission FCC Part 15 Class B, EN55022 Class B
Immunity EN55024
AT-FS238 |2Port Fast Ethernet Single Strand Speed/Media Converting Switch
USA Headquarters |19800 North Creek Parkway |Suite 200 |Bothell |WA 98011 |USA |T: [phone] |F: [phone]
European Headquarters |Via Motta 24 |6830 Chiasso |Switzerland |T: +41 91 69769.00 |F: +41 91 69769.11
Asia-Pacific Headquarters |11 T
ai Seng Link |Singapore |534182 |T: [phone] |F: [phone]
www.alliedtelesis.com
©2007 Allied T
elesis Inc. All rights reserved. Information in this document is subject to change without notice. All company names, logos, and product designs that are trademarks or registered trademarks are the property of their respective owners. 617-00520 Rev E
Ordering Information
AT-FS238A/1-10
2port single strand fiber media converter, 10/100TX
(RJ-45) to 100FX (SC) (1310nm TX/1550nm RX) with
12vDC power supply and distances up to 15km
AT-FS238A/2-10
2port single strand fiber media converter, 10/100TX
(RJ-45) to 100FX (SC) (1310nm TX/1550nm RX) with
12vDC power supply and distances up to 40km
AT
-FS238B/1-10
2port single strand fiber media converter, 10/100TX
(RJ-45) to 100FX (SC) (1550nm TX/1310nm RX) with
12vDC power supply and distances up to 15km
AT-FS238B/2-10
2portsingle strand fiber media converter, 10/100TX
(RJ-45) to 100FX (SC) (1550nm TX/1310nm RX) with
12vDC power supply and distances up to 40km
Associated Products
AT-PWR237-11
12vDC power supply with screw terminals
Model Fiber Type1
Fiber Optic
Diameter
(Microns)
Optical
Wavelength
Launch Power (dBm)2
Min. Avg.2Max.
AT-FS238a/1 SMF (SC) 9/125 1310nm -15.0 -11.0 -8.0
AT-FS238a/2 SMF (SC) 9/125 1310nm -8.0 -5.0 -2.0
AT-FS238b/1 SMF (SC) 9/125 1550nm -15.0 -11.0 -8.0
AT-FS238b/2 SMF (SC) 9/125 1550nm -8.0 -5.0 -2.0
1 SMF = Single-mode fiber
2 Launch power is
measured at one meter
from the transmitter
3 Launch power (Avg.) is
power coupled into a
single-mode fiber
Model Fiber Type1
Fiber Optic
Diameter
(Microns)
Optical
Wavelength
Receiver Sensitivity (dBm)
Max. Avg. Saturation
AT-FS238a/1 SMF (SC) 9/125 1550nm -30.0 n/a -7.5
AT-FS238a/2 SMF (SC) 9/125 1550nm -33.0 n/a -2.0
AT-FS238b/1 SMF (SC) 9/125 1310nm -30.0 n/a -7.5
AT-FS238b/2 SMF (SC) 9/125 1310nm -33.0 n/a -2.0
1 SMF = Single-mode fiber
Model Fiber Type1
Minimum
Power/Link
Budget
Minimum
Operating
Distance2
Minimum
Operating
Distance3
AT-FS238a/1 9/125 SMF 6.0dB 0 15km (9.4mi)
AT-FS238a/2 9/125 SMF 16.0dB 0 40km (9.4mi)
AT-FS238b/1 9/125 SMF 6.0dB 0 15km (9.4mi)
AT-FS238b/2 9/125 SMF 16.0dB 0 40km (9.4mi)
1 SMF = Single-mode fiber
2 The recommended mimimum range is
stated in all cases where the maximum
transmitter output power exceeds the
receiver’ssaturation level. This is to
prevent blinding or burning out of the
optical receiver on the far-end mode.
3. Distance is calculated based on ideal
situations without anyother loss factor
Fiber Type1
Fiber Optic
Diameter
(Microns)
Optical
Wavelength
Typical
Loss
Factor
Bandwidth
SMF (SC) 9/125 1310nm 0.4dBm n/a