Transition Networks SRS2F3111-100 User manual

User’s Guide
SRS2F31xx-100
Stand-Alone Media Converter
RS-232 to Fiber
Transition Networks SRS2F31xx-100 series
media converters connect copper RS-232
cable to fiber-optic cable at asynchronous
data rates up to 115 kB/s.
The CRS2F31xx-100 is designed to be installed in pairs where one is the local
media converter and the other is the remote.
Installation . . . . . . . . . . . . . . . . . .2
Operation . . . . . . . . . . . . . . . . . . .6
Cable Specifications . . . . . . . . . . .7
Technical Specifications . . . . . . . .8
Troubleshooting . . . . . . . . . . . . . .9
Contact Us . . . . . . . . . . . . . . . . .11
Compliance Information . . . . . . .12
Part Number Port One - Copper Port Two - Fiber-Optic
SRS2F3111-100 RS-232
15 m (50 ft)*
ST, 1300 nm multimode
2 km (1.2 miles)*
SRS2F3113-100 RS-232
15 m (50 ft)*
SC, 1300 nm multimode
2 km (1.2 miles)*
SRS2F3114-100 RS-232
15 m (50 ft)*
SC, 1310 nm single mode
20 km (12.4 miles)*
SRS2F3115-100 RS-232
15 m (50 ft)*
SC, 1310 nm single mode
40 km (24.8 miles)*
* Typical maximum cable distance. Actual distance is dependent upon the
physical characteristics of the network installation.
The chassis version of the media converter is CRS2F31xx-100. For more
information, see the CRS2F31xx-100 user’s guide on-line at:
www.transition.com.

2Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
SRS2F31xx-100
Installation
CAUTION: Wear a grounding device and observe electrostatic discharge
precautions when setting the switches and when setting the jumper. Failure to
observe this caution could result in damage to, and subsequent failure of, the
media converter.
Set the DTE/DCE Switch
The DTE/DCE switch is located on the side of the media converter. How the
DTE/DCE switch is set depends on the type of device connected to the media
converter:
•DTE (Data Terminal Equipment).
•DCE (Data Communication Equipment).
... and the type of RS-232 cable:
•Straight-through configuration cable.
•Null-modem configuration cable.
Using Straight-Through RS-232 Cable
DTE Configuration
SRS2F31xx-100
switch set to DTE
SRS2F31xx-100
switch set to DCE
DTE device
DCE device
straight-through
RS-232 cable
straight-through
RS-232 cable
Set the switch to DTE
configuration if the media
converter is connected to a
DCE device via a straight-
through RS-232 cable.
Set the switch to DCE
configuration if the media
converter is connected to a
DTE device via a straight-
through RS-232 cable.
DCE Configuration
[email protected] -- Click the “Transition Now” link for a live Web chat. 3
Set the Loop-Back Switch
The loop-back switch is located on the front panel of the media converter and
is used to debug network faults. (See page 10 in the “Troubleshooting”
section.)
To set the switch, use a small flat-blade
screwdriver or a similar device.
Norm Set the switch to “Norm” for
normal operation.
Loop Set the switch to “Loop” to
enable both fiber and copper
loop-back.
Normal
Operation:
Norm
Loop
Fiber and Coppe
r
Loop-Back:
Norm
Loop
Installation -- Continued
Using Null-Modem RS-232 Cable
DCE Configuration
SRS2F31xx-100
switch set to DCE
SRS2F31xx-100
switch set to DTE
DTE device
DCE device
null-modem
RS-232 cable
null-modem
RS-232 cable
Set the switch to DCE
configuration if the media
converter is connected to a
DCE device via a null-modem
RS-232 cable.
Set the switch to DTE
configuration if the media
converter is connected to a
DTE device via a null-modem
RS-232 cable.
DTE Configuration

4Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
SRS2F31xx-100
Install the Fiber Cable
1. Locate or build fiber cable with male, two-stranded TX to RX connectors
installed at both ends.
2. Connect the fiber cables to the first SRS2F31xx-100 media converter as
described:
• Connect the male TX cable connector to the female TX port.
• Connect the male RX cable connector to the female RX port.
3. Connect the fiber cables to the other SRS2F31xx-100 media converter as
described:
• Connect the male TX cable connector to the female RX port.
• Connect the male RX cable connector to the female TX port.
Connect the fiber cable
to the first media converter
as shown.
Connect the fiber cable
to the second media
converter, as shown
RX
TX
RX
TX
Installation -- Continued
Set the Hardware/Software Jumper
The jumper is located on the circuit board inside the media converter
housing.
Hardware The media converter mode is determined by
the switch settings (see pages 2-3).
Software The media converter mode is determined by
the most-recently saved, on-board
microprocessor settings.
To set the jumper:
1. Using a small screwdriver, remove the four (4) screws that secure the
cover and carefully remove the cover from the media converter.
2. Locate the two-position jumper on the circuit board.
3. Using small needle-nosed pliers or similar device, move the jumper to
the desired position. (See the above drawing.)
4. Carefully replace the cover on the media converter and replace the four
(4) screws that secure the cover to the media converter.
software
mode hardwar
e
mode
H
S
H
S
J2 J2
[email protected] -- Click the “Transition Now” link for a live Web chat. 5
Installation -- Continued
Install the Copper Cable
NOTE: Shielded RS-232 cables are required for EMC compliance.
1. Locate or build RS-232 cables with a female connector for the media
converter end and the correct gender connector for the DTE/DCE device
at the other end. And with either straight-through or null-modem cable
configuration.
2. Connect the female RS-232 connector at one end of cable to the male
RS-232 port on the first SRS2F21-100 media converter.
3. Connect the RS-232 connector at the other end of the cable to the RS-232
port on the DTE/DCE device.
9
8
7
6
6
7
8
9
1
5
4
3
2
5
1
2
3
4
Null-modem configuration cable
with handshaking signaling
(Re
q
uirements for different e
q
ui
p
ment ma
y
var
y
.)
Straight-through configuration cable
with handshaking signals
9
8
7
6
9
8
7
6
1
5
4
3
2
1
5
4
3
2
(o
p
tional confi
g
uration: no connect on
p
in 9.)
Power the Media Converter
AC
1. Install the power adapter cord to the back of the media converter.
2. Connect the power adapter plug to AC power.
3. Verify that the media converter is powered by observing the illuminated
LED power indicator light.
DC
Consult the user’s guide for the Transition Networks SPS1872-xx DC external
power supply for powering the media converter.

6Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
SRS2F31xx-100
Fiber
Fiber
RS-232
RS-232
RX
TX
PWR
RX
FL
LOOPNORM
Operation
After installation, the media converter should function without operator
intervention. Use the status LEDs to monitor the media converter operation in the
network.
PWR On The media converter is connected to external power.
FL On A link has been established with the fiber connector.
Flashing The media converter is in loop-back mode.
RX Flashing The RS-232 connector is receiving data.
SNMP
Use SNMP at an attached terminal or at a remote location to monitor the
media converter by monitoring:
• Local/remote fiber link status
• Local/remote Hardware/software mode
• Local/remote loop-back
Also, use SNMP to enter network commands for::
• local/remote loop-back
See the on-line documentation that comes with Transition Networks
FocalPoint™ software for applicable commands and usage at
www.transition.com
Remote Management
The CRS2F31xx-100 (the chassis version of the media converter) can remotely
manage the SRS2F31xx-100. For example, a local CRS2F3111-100 converter
(that is installed in a managed Transition Networks PointSystem™ chassis) is
connected, via fiber, to a remote SRS2F3111-100 converter.
The SNMP section (below) lists the commands that can be used to monitor and
manage both the local and remote media converter.
NOTE: In a managed network, both the local and remote media converters
must be set to “software” mode (see page 4).
[email protected] -- Click the “Transition Now” link for a live Web chat. 7
Cable Specifications
Fiber Cable
Bit Error Rate: <10-9
Single mode fiber (recommended): 9 µm
Multimode fiber (recommended): 62.5/125 µm
Multimode fiber (optional): 100/140, 85/140, 50/125 µm
SRS2F3111-100 1300 nm multimode
Fiber Optic Transmitter Power: min: -19.0 dBm max: -14.0 dBm
Fiber Optic Receiver Sensitivity: min: -30.0 dBm max: -14.0 dBm
Link Budget: 11.0 dB
SRS2F3113-100 1300 nm multimode
Fiber Optic Transmitter Power: min: -19.0 dBm max: -14.0 dBm
Fiber Optic Receiver Sensitivity: min: -30.0 dBm max: -14.0 dBm
Link Budget: 11.0 dB
SRS2F3114-100 1310 nm single mode
Fiber-optic Transmitter Power: min: -15.0 dBm max: -8.0 dBm
Fiber-optic Receiver Sensitivity: min: -31.0 dBm max: -8.0 dBm
Link Budget: 16.0 dB
SRS2F3115-100 1310 nm single mode
Fiber-optic Transmitter Power: min: -8.0 dBm max: -2.0 dBm
Fiber-optic Receiver Sensitivity: min: -34.0 dBm max: -7.0 dBm
Link Budget: 26.0 dB
The fiber optic transmitters on this device meet Class I Laser safety
requirements per IEC-825/CDRH standards and comply with 21
CFR1040.10 and 21CFR1040.11.
RS-232 Copper Cable
Gauge: 24 to 22 AWG
Maximum Data Rate (asynchronous) 115 kB/s
Maximum Cable Distance: 15 m (50 ft.)
RS-232 Signals:
6
7
8
9
1
2
3
4
5
Data SetReadyData CarrierDetect
Request to Send
Clearto Send
NotUsed
Receive Data
TransmitData
Data Terminal Ready
Signal Ground
Protective Ground

8Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
SRS2F31xx-100
Technical Specifications
For use with Transition Networks Model SRS2F31xx-100 or equivalent
Data Rate 115 Kb/s (asynchronous)
Dimensions 3.25" x 4.7" x 1.0" (83mm x 119mm x 25mm)
Weight 10 oz. (283 g) (approximately)
Power Consumption 5 Watts
Power Supply 12VDC, 0.8 Amp (North. Am., EU, Japan, South Am.)
12VDC, 1.25 Amp (UK, Australia, N.Z., South Africa)
MTBF 54,399 hours (MIL217F2 V5.0) (MIL-HDBD-217F)
130,681 hours (Bellcore7 V5.0)
Environment Tmra*: 0 to 50°C (32° to 122° F )
Storage Temp: -15° to 65°C (5° to 149°F)
Humidity: 5 to 95%, non condensing
Altitude: 0 to 10,000 feet
Warranty Lifetime
*Manufacturer’s rated ambient temperature.
The information in this user’s guide is subject to change. For the most up-to-date
information on the CRS2F31xx-100 media converter, view the user’s guide on-
line at: www.transition.com
Product is certified by the manufacturer to comply with DHHS Rule 21/CFR,
Subchapter J applicable at the date of manufacture.
CAUTION: Visible and invisible laser radiation when open. Do not stare into
the beam or view directly with optical instruments.
CAUTION: Use of controls, adjustments or the performance of procedures other
than those specified herein may result in hazardous radiation exposure.
Optional Accessories (sold separately)
Part Number Description
SPS-1872-SA Optional External Power Supply; 18-72VDC Stand-Alone--
Output: 12.6VDC, 1.0 A
SPS-1872-PS Optional External Power Supply; 18-72VDC Piggy-back;
Output: 12.6VDC, 1.0 A
E-MCR-04 12-Slot Media Converter Rack (includes universal internal power
supply) 17 x 15 x 5 in. (432 x 381 x 127 mm)
WMBL Optional Wall Mount Brackets
Length: 4.0 in. (102 mm), Fits converter length: 4.7 in. (119 mm)
WMBV Optional Vertical Mount Bracket; Length: 5.0 in. (127 mm)
WMBD Optional DIN Rail Mount Bracket; Length: 5.0 in. (127 mm)
WMBD-F Optional DIN Rail Mount Bracket (flat); Length: 3.3in. (84 mm)
[email protected] -- Click the “Transition Now” link for a live Web chat. 9
Troubleshooting
If the media converter fails, isolate and correct the failure by determining the
answers to the following questions and then taking the indicated action:
1. Is the PWR (Power) LED illuminated?
NO
• Is the power adapter the proper type of voltage and cycle frequency
for the AC outlet? (See “Technical Specifications” on page 8.)
• Is the power adapter properly installed in the media converter and in
the outlet?
• Does the grounded AC outlet provide power?
• Contact Tech Support: 1-800-260-1312, Int’l: 00-1-952-941-7600.
YES
• Proceed to step 2.
2. Is the RX (copper) LED flashing?
NO
• Disconnect and reconnect the RS-232 copper cable to restart the
initialization process.
• Restart the attached device on the other end of the RS-232 cable to
restart the initialization process.
• Contact Tech Support: 1-800-260-1312, Int’l: 00-1-952-941-7600.
YES
• Proceed to step 3.
3. Is the FL (fiber) LED illuminated?
NO
• Check the fiber cables for proper connection.
• Verify that the TX and RX cables on the media converter are
connected to the RX and TX ports, respectively, on the other media
converter.
• Contact Tech Support: 1-800-260-1312, Int’l: 00-1-952-941-7600.
YES
• Proceed to step 4.
4. Is the FL (fiber) LED flashing?
YES
• The media converter is in loop-back mode. To disable the loop-back
function in “Hardware” mode, set the loop-back switch to the
"Norm" position. In “Software” mode, at the SNMP interface, select
“disable loop-back” option.
• Contact Tech Support: 1-800-260-1312, Int’l: 00-1-952-941-7600.
NO
• Proceed to step 5.

10 Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
SRS2F31xx-100
5. Is Data Transfer Failing?
YES
• Verify the local copper connection by starting a local copper loop-back
(hardware mode: set the loop-back switch on the local media converter to
“loop”, software mode: enter the local copper loop-back command) and then
use a bit error test unit to run a bit error test.
• Verify the local fiber connection by starting a remote fiber loop-back (hardware
mode: set the loop-back switch on the remote media converter to “loop”,
software mode: enter the remote fiber loop-back command) and then use a bit
error test unit to run a bit error test.
• Verify the remote copper connection by starting a remote copper loop-back
(hardware mode: set the loop-back switch on the remote media converter to
“loop”, software mode: enter the remote copper loop-back command) and
then use a bit error test unit on the remote end to run a bit error test.
• Verify remote fiber connection by starting a local copper loop-back (hardware
mode: setting the loop-back switch on the local media converter to “loop”,
software mode: enter the local fiber loop-back command) and then use a bit
error test unit on the remote end to run a bit error test.
NO
• Contact Technical Support: US/Canada: 1-800-260-1312, International: 00-1-
952-941-7600.
Remote ConverterLocal Converter
Remote
Device
B it E rror Te s t
Equipment
w/SNMP Management
copper Fiber copper
Remote ConverterLocal Converter
Remote
Device
B it E rror Te s t
Equipment
w/SNMP Management
copper Fiber copper
Remote ConverterLocal Converter
Loca l
Device
B it E rror Te s t
Equipment
w/SNMP Management
copper Fiber copper
Remote ConverterLocal Converter
Loca l
Device
w/SNMP Management
copper Fiber copper
B it E rror Te s t
Equipment
[email protected] -- Click the “Transition Now” link for a live Web chat. 11
Contact Us
Technical Support
Technical support is available 24 hours a day.
US and Canada: 1-800-260-1312
International: 00-1-952-941-7600
Transition Now
Chat live via the Web with Transition Networks Technical Support.
Log onto www.transition.com and click the Transition Now link.
Web-Based Seminars
Transition Networks provides seminars via live web-based training.
Log onto www.transition.com and click the Learning Center link.
E-Mail
Ask a question anytime by sending an e-mail to our technical support staff.
[email protected]
Address
Transition Networks
6475 City West Parkway
Minneapolis, MN 55344, U.S.A.
telephone: [phone]
toll free: 800-526-9267
fax: [phone]
Declaration of Conformity
Name of Mfg: Transition Networks
6475 City West Parkway, Minneapolis MN 55344 U.S.A.
Model: SRS2F31xx-100 Series Media Converter
Part Number: SRS2F3111-100, SRS2F3113-100, SRS2F3114-100,
SRS2F3115-100
Regulation: EMC Directive 89/336/EEC
Purpose: To declare that the SRS2F31xx-100 to which this declaration refers is in
conformity with the following standards.
CISPR 22: 1993; EN 55022:1998 Class A; FCC Part 15 Subpart B; EN 55024: 1998;
21 CFR subpart J
I, the undersigned, hereby declare that the equipment specified above conforms to the above
Directive(s) and Standard(s).
Sept, 2007_____
Stephen Anderson, Vice-President of Engineering Date

Compliance Information
CISPR22/EN55022 Class A + EN55024
CE Mark
FCC Regulations
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the user will be required to correct the
interference at the user's own expense.
Canadian Regulations
This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus
set out on the radio interference regulations of the Canadian Department of Communications.
Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la Class A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des Communications du Canada.
European Regulations
Warning
This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
Achtung !
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb
dieses Gerätes Rundfunkstörungen auftreten. In diesem Fäll ist der Benutzer für
Gegenmaßnahmen verantwortlich.
Attention !
Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de
créer des interférences radioélectriques, il appartiendra alors à l'utilsateur de prende les
measures spécifiques appropriées.
Trademark Notice
All trademarks and registered trademarks are the property of their respective owners.
Copyright Restrictions
© 2003-2005 Transition Networks.
All rights reserved. No part of this work may be reproduced or used in any form or by any
means - graphic, electronic, or mechanical - without written permission from Transition
Networks.
Printed in the U.S.A. 33279.F