FibroLAN S.CON1 Manual

S.CON1
10/100BaseTX-FX Media Converter
User and Installation Guide
Version: 3.6
FibroLAN Ltd
2 Carmel St. P.O. Box 544 Yoqneam-Illit, 20692 ISRAEL
Tel: [phone] Fax: [phone]
[email protected] www.fibrolan.com

S.CON1 Single Channel TX/FX Converter
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FEDERAL COMMUNICATIONS COMMISSION
AND
CANADIAN DEPARTMENT OF COMMUNICATIONS
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if
not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication.
It has been tested and found to comply with the limits for a Class A computing
device in accordance with the specifications in Subpart B of Part 15 of FCC
rules, which are designed to provide reasonable protection against such
interference when the equipment is operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause interference,
in which case the user at his own expense will be required to take whatever
measures may be necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise
emission from digital apparatus set out in the Radio Interference Regulation 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 classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par le ministère des Communications du Canada.
CE Mark
The CE mark symbolizes compliance with the European
Community required technical standards.
The product herewith complies with the requirements of the EMC
Directive 89/336/EEC,
the Low Voltage Directive 73/23/EEC and
the R&TTE Directive 99/5/EC.
The product was tested in a typical configuration.
Levy Malkiely
Manager Quality

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List of contents
Overview page 4
Planning your network with S.CON page 5
Content of the shipping container page 7
Product general description page 7
Key Features page 8
Parts identification page 10
Installation page 11
Power connection page 12
Far End Fault (FEF) feature page 13
FEF and SD (Signal Detect) page 14
F/O cabling page 15
F/O port specifications page 16
UTP cable connection page 16
DIP switches setting page 17
Fault Propagation (FP) page 18
FP and FEF in action page 19
Troubleshooting page 20
Specifications page 21
Warranty Limitation page 22
Thank you for purchasing this S.CON1
quality converter from FibroLAN. We
hope that this guide will help you to
obtain the best results from the device
while minimizing installation time.
If you still need help installing or troubleshooting the S.CON
converter after reading the detailed information in this guide, please
visit our web site, contact your reseller, or call FibroLAN directly.
Note unless where indicated otherwise, in this guide, S.CON1 applies also to
S.CON1/T, SCON1-48, S.CON1/SMR7, S.CON1/SMR, S.CON1/SM,
S.CON1/SML/L2/L3/LX, , S.CON1/SMRF13, S.CON1/SMRF15
S.CON1/SMXF15,and S.CON1/SMXF13

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1 ─Overview
The SCON family products are 10/100Base-TX –FX buffered Media Converters.
They provide network extension over MM fiber (up to 2Km) and up to 150Km over
SM fiber in any network architecture (even with repeaters).
SFS (Single-Fiber-Strand) versions of the S.CON make it a superb choice for
suitable installations saving 50% of the entire cable plant
Managed SNMP models are also available: SCON1M models.
A media-converter may be defined as a device connecting two active network
components point-to-point over a media that is different from the ports of at least one
of these devices.
While Media Converters are considered part of the cable plant, in many cases they
must be remotely managed as any other network device. In particular this is true in
mission-critical, fully managed networks as well as in networks dispersed over large
areas to allow efficient control and maintenance.
While vendors offer such feature for large chassis based systems only, the need for
management is more intense in single channel devices, being deployed away from
the main wiring closets. Out-of-band management assures independence of the
control channel for enhanced system reliability.
An ideal media-converter should be a transparent element in the network, and its
ports may be considered as integral parts of the devices interconnected by it.
The IEE802.3u standard defines network span in terms of distances and bit times.
Conventional 100Base-TX/100Base-FX media-converters are based on repeater
technology, and they form a part of the collision domain created by the
interconnected devices. Therefore, the delay they introduce in the network severely
affects the allowed distances. Furthermore, if two class II repeaters (i.e., 2 hubs) are
already present in the same collision domain, then the use of a conventional
converter is not allowed as the repeater count may - in such case - exceed the limits.
In all other cases, meticulous PDV (Path Delay Value) must be performed prior to
establishing the possible distances for both the fiber optic (F/O) and copper
segments.
The S.CON family series implement a non-repeater, full re-timing design. It creates a
Buffered Media Domain (BMD) over the F/O link, thereby eliminating all the above-
mentioned limitations. The BMD created by two S.CON devices always operates at
maximum performance - 100Mbps/Full Duplex - while interconnected devices may
operate at different rates and modes.
The S.CON1 supports the Far End Fault (FEF) feature.
Far End Fault occurs when the signal detection is logically false from the receive
(incoming path) fiber port. When the S.CON1 detects a F/O Link Loss condition, the
unit will automatically send a Far End Fault signal to the remote device (on it
outgoing path). The remote device should support the same FEF feature and it will
indicate a Link Loss as well. (Refer to section 8 for more details). The S.CON1
supports bi-directional Fault Propagation mechanism (FO>TP and TP>FO). When
the S.CON1 senses a loss of F/O Link, it will automatically cut its TP port link. If the
S.CON1 unit is connected to a Master Unit, which does support Fault Propagation,
the latter will sense the loss of the F/O link and it will deliberately cut its TP port. If the
S.CON1 TP port link fails, the FP will cut the F/O link port (Refer to section 12 for a
detailed description).

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2 ─Planning your network with S.CON1
This chapter will guide you through network planning in order to obtain maximum
benefit - in terms of performance and functionality - from the S.CON converter and
other network devices. For specific instructions regarding the S.CON setup, consult
section 11 – "DIP Switches setting”.
Any networking device may connect to the copper port of the S.CON converters:
switches (of any type), hubs of any type (including 10Base-T!) or workstations (10 or
100Mbps).
While copper segments distances (between the device and the S.CON and between
such device and another device) reach their maximum at 100m/330ft, the F/O
segment (multi-mode fiber) may be extended to 2000m (6500ft) and much more
over single-mode fiber. (Up to150Km). Single Fiber Strand (15-20 Km) models can
be deployed saving 50 % of the cabling plant.
As an S.CON1 device is only slightly more expensive (if at all) than a plain 100Base-
FX transceiver (and certainly less expensive than an integrated 100Base-FX up-link
module in any of the interconnected devices), it is highly recommended to use the
typical configuration below: extra benefits are obtained at little or no additional cost!
Additional benefits are obtained due to the implementation of the BMD (Buffered
Media Domain).
When the F/O link connects two hubs, S.CON1 not only converts media but also
splits the network into two segments, which reduces loads and collisions!
Furthermore, hubs operating at two different speeds (10Base-T and 100Base-TX)
may be interconnected, in which case the S.CON1 now acts as a rate converter as
well.
By using the SNMP managed version, S.CON1M devices, the entire network (see the
drawing in the next page: “Typical Network Configuration”) can be monitored by
means of the SNMP manager station located in the Headquarters building.

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Typical Network Configuration
This network can be monitored and controlled (if the remote attached devices
are S.CON1M units) from any SNMP management station running popular
management platforms (e.g. FibroLAN MetroView, HP OpenView, SNMPc, etc)

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3 ─Contents of the ship container
The contents of the S.CON1 shipping container are as follows:
•One converter S.CON1
•One AC power cord (excluding shipment to certain countries).
•. Powered cords for DC (-48V) models are NOT supplied.
•S.CON2/4/8 are packed in the same manner.
•User and Installation Guide or Quick Guide
4 ─Product general description
The S.CON family products are offered in several pre-configured models as listed in
the table below. Each of S.CON units can be also equipped with an internal DC
Power Supply (PS48) instead of the standard AC P.S.
ETR: Extended Temperature Range (-10°÷+70°C) option is applicable to all S.CON1
models.
S.CON1 Single Channel 10/100Base-TX to 100Base-FX converter, BMD
(Buffered Media Domain), SC connectors, multi-mode - 2km
S.CON1/T
Single Channel 10/100Base-TX to 100Base-FX converter, BMD, ST connectors,
multi-mode - 2km
S.CON1-48
Single Channel 10/100Base-TX to 100Base-FX converter, BMD, ST connectors,
multi-mode - 2km, internal –48VDC PS.
S.CON1/SMR7 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 7km
S.CON1/SMR Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 15km
S.CON1/SM Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 25km
S.CON1/SM/L Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 40km
S.CON1/SM/L/2 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 70km
S.CON1/SM/L/3 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 100km, 1550nmDFB
S.CON1/SM/L/X Single Channel 10/100Base-TX to 100Base-FX converter, BMD, SC connectors,
single-mode - 150km, 1550nmDFB
S.CON1/SMRF13 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, single SC
connector, single-mode - 15km, Single Fiber Strand, 1310nm Tx/1550nm Rx
S.CON1/SMRF15 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, single SC
connector, single-mode - 15km, Single Fiber Strand, 1550nm Tx / 1310nm Rx
S.CON1/SMXF13 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, single SC
connector, single-mode - 80km, Single Fiber Strand, 1310nm Tx/1550nm Rx
S.CON1/SMXF15 Single Channel 10/100Base-TX to 100Base-FX converter, BMD, single SC
connector, single-mode – 80Km, SFS, 1550nm Tx / DFB/1310nm Rx
CTF-RM 19" Rack shelf for installation of up to 3 S.CON1 devices
SCH-WM Wall mount kit for S.CON1 device
PS48 DC (-36 to -72 V) Power supply (instead of AC power supply) for single channel
and other half rack sized devices.
CBPS-DC48 DC Power Supply cable, 3m, PS48
ETR Extended Temperature Range (-10 to +70 Centigrade) for all single channel
products
ETRX Extended Temperature Range (-25 to +70 Centigrade) for all single channel
products

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Key Features
•10Base-T, 100Base-TX and 100Base-FX modes of operation
•Supports FEF feature (Far-End-Fault) and bi-directional Fault Propagation
mechanism (FO>TP and TP>FO)
•Comprehensive Diagnostic LEDs: Indicators for Link, Activity (Tx, Rx), FDX,
100M, SD (signal detect) and Power status.
•Hardware based 10/100, Full/Half, Flow control and Auto-Negotiation
•Wire speed reception and transmission
•MDI-II / MDI-X front panel switch selection on each S.CON unit
•Supports 1K Mac addresses
•Automatic address learning and address aging (aging period is 300s)
•Frame length range: 64 ÷ 1536 bytes. VLAN tag frames are thus
supported and can pass thru the converter
•Desktop, shelf or wall mounts installation.
•ETR: Extended Temperature Range (-10°÷+70°C) option for all S.CON1
models
•ETRX: Extended Temperature Range (-25°÷+70°C) option for all S.CON1
models
•Optional -48VDC Power Supply for all S.CON1 models (PS48)

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General Description
All S.CON models have identical functionality and performance. Therefore, any
description or feature of one model refers to all other types.
The RJ-45 port operates in Auto-Negotiation mode: It may operate in 100Base-TX or
10Base-T and in both FDX and HDX modes, depending on the type of device to
which it is connected.
The TP port is a shielded RJ-45 port, cat.5, and 100m. The port can operate as an
MDI-II or MDI-X port depending on the MDI-II /MDI-X selector
The S.CON1 is equipped with an MDI-II/MDI-X selector on the front panel to allow
connection of either a switch/hub or a station, allowing the use of either a straight or
cross-twisted pair cable.
The F/O port supports 100Base-FX transmission in both FDX and HDX modes.
The conversion process creates a BMD, allowing unprecedented functionality and
performance. The F/O port is setup by default to operate at 100Mbps FDX.
For optimized set-up, each S.CON unit is equipped with an array of 7 positions DIP
switches accessible from the front panel. (MODE SETUP).
The device provides extensive diagnostics and a status display with 7 high visibility
LEDs for each S.CON device.
SCON.1 models Power Supply (including –48 models)
The system is equipped with a powerful power supply (100 - 240V universal input or
–48VDC). A front panel LED indicates the power status.

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5 ─Front Panel parts identification
1. MDI-II / MDI-X selector
2. 10/100Base-TX connector port (shielded RJ45)
3. Diagnostic LEDs –TP port
Link/ Act - twisted pair link present (LED steady lit)
When blinking implies activity (transmit or receive mode)
FDX - full duplex operation
100M - twisted pair is working at 100Mbps (when the LED is off, the speed is 10Mbps)
4. SC fiber optic connector (left/Tx & right/Rx); ST connector (S.CON1/T model)
5. Fiber optic port LED indicators
Link/ Act - twisted pair link present (LED constantly lit)
When blinking implies activity (transmit or receive mode)
SD (signal detect) signal present during receive mode
FDX - full duplex operation
6. MODE SETUP: 7 positions DIP switches
7. PWR - POWER LED indicator LED lit: Main power supply installed and operating

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6 ─Installation procedures
S.CON1 all models (including –48 VDC models).
This device is intended for use with indoors power lines only.
For Desktop use: Affix the supplied plastic “feet” (after peeling off the adhesive
protecting sheet) to the bottom of the devices, with each “foot” approximately 1 cm
from each edge. Place the device horizontally on a hard, clean surface (desk, shelf,
etc.), leaving free space around it for natural ventilation. Avoid placing the device on
other active, heat generating equipment and avoid placing such devices on other
S.CON1 unit.
For wall mount installation
Attach the single channel wall mount kit (SCH – WM part # B161) with two (supplied) screws
to the base of the S.CON1 unit (select any 2 adjacent nuts: 1+2 or 3+4 or1+3 or 2+4) to
achieve the desired mode of mounting. The screws to be fixed on the wall should not
protrude more than 8mm. Append the S.CON1 unit on the wall.
For Shelf installation:
Use the 19” Rack shelf (CTF-RM P/N B012) for installation of up to 3 S.CON1 units.
During the installation of several 19” Rack shelves, it is recommended to leave at
least 1cm ventilation space between two adjacent racks.

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7 ─Power Connection
CAUTION: When connecting a device to an AC(DC) power outlet, always first
connect the cord to the device, and ensure that it is securely fastened. Only
afterward connect the cord to the wall outlet. Make sure to use grounded (3
way) outlets (in case of AC models).
For each country FibroLAN (or FibroLAN’s distributor) provide with the product
an appropriate power supply cord which is safety approved in accordance with
related country’s National Electric Code
S.CON1 all AC models Rear Panel
Connect to AC line socket at the rear of the converter, using the included power cord.
The S.CON1 will accept and automatically switch between any line voltage from 100
to 240 VAC, 50-60 Hz.
There is no ON/OFF switch on the device. When the power is connected to the
device, the device is ON. The POWER LED on the front panel being illuminated will
indicate this.
S.CON1 with 48 VDC Power Supply (PS48)
Proceed as above using a suitable DC supply cable. Verify that the DC-Mains
provide a 10Amp DC circuit breaker. Ensure that the polarity of the cable
complies with the polarity of the DC receptacle on the device as depicted above. If
you use the FibroLAN CBPS-48V cable (B151), insert all-way-in the D-type DC
connector and secure the D-Shell to the DC Inlet of the S.CON1 device using the
two captive screws. Connect the cable 3 leads to the DC Power Outlet, ensuring
that the -48V blue lead is connected to the -48V of the DC Power Outlet, the
red/brown OV lead to the OV of the DC Power Outlet, and the ground lead
(yellow/green) to the ground of the DC Power Outlet. There is no ON/OFF switch
on the device. When the power is connected to the device, the device is ON. The
POWER LED being illuminated will indicate this.
NEVER OPEN THE DEVICE WHEN IT IS CONNECTED TO POWER LINES!

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8 ─100Base-FX Far End Fault (FEF feature)
Usually a “LINK” indication is related to the incoming fiber only: F/O Link ON shows
that the path created by the remote transmitter, local receiver and the fiber
connecting them is operational. However if there is a fault in the other – outgoing -
path (created by the local transmitter, remote receiver and the fiber connecting them)
– the indication for such fault can be seen on the remote device only.
The FEF implemented in the S.CON1 closes this gap: if there is a fault in the
outgoing path and the remote device is FEF compliant, then the F/O LINK LED will
go OFF on both the local and remote devices. In this way we avoid the possibility of
having a FX Link ON indication at one end while, in reality one of the data path is
disrupted.
The drawing below depicts the FEF functionality.
The SD (Signal Detect indicated by the SD LED) will further enhance the FEF
feature.
If any of Receive path elements becomes faulty, Converter B will show a Link Down
condition and will send a FEF signal to Converter A which in turn will indicate a F/O
Link down as well.

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Far End Fault (FEF) and the SD (Signal Detect)
The combination of the FEF feature and the SD LED ( SD =Signal Detect which
implies data signal present during receive mode ) provides a powerful and efficient
troubleshooting tool to easily identify a failed fiber connection within a F/O link.
The below drawing depicts the Signal Detect (SD LED) functionality.
When Fiber 1 is disrupted, this event will cause the SD LED to be OFF at Converter
B, a clear indication that Fiber 1 path is faulty.
On the other hand, SD LED at Converter A is lit which indicates that Fiber 2 is
intact and operational.
Converter B shows both F/O Link/Act and SD LEDs in OFF condition due to Fiber 1
line disrupted.
Converter A has its SD LED lit since the converter has received the FEF signal, thus
Fiber 2 is actually intact.
By means of the FEF and SD LED, we can identify the failing fiber line.

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9 ─F/O Cabling Connection
The S.CON1 is equipped with 1 pair of SC-type connector or single SC connector for
SFS (Single –Fiber – Strand) models.
Do not remove the protective covers on the fiber connectors until you are ready to
connect the fiber optic cables. Power should be connected before attaching the fiber
optic cables. When dealing with fiber optic cables, it is essential to ensure that the Tx
at one end of the link is connected to the Rx at the other end of the link.
Some duplex fiber optic cables are color coded to help monitor the direction of data
transmission. If the fibers are not coded, special attention must be paid to ensure a
proper connection. When deploying a single-fiber-strand link make sure that
wavelength of Rx of your device complies with the wavelength of the Tx of the remote
device. In case of deploying a link comprising of 2 such S.CON1 units it means that
one should be S.CON1/SMRF13 and the other S.CON1/SMRF15.
(or SMXF13/SMXF15 for SFS 80Km link)
CAUTION
Radiation emitted from a fiber optic connector may be
hazardous to human vision. Therefore, the following rules
must be strictly observed
All Single-mode (SM) models are CLASS I LASER PRODUCT
that may endanger your eyes and must be handled with
special care
h
en not in use, keep the fiber optic connector closed using
s
protective cover
Never stare directly into the fiber optic connector of a
powered device or into the end of a fiber connected to it.
Do not look directly into the fiber optic cables or transmitter
Laser Safety
The emissions produced by the end products described in this guide are under Class 1
emission level according to IEC 60825-1 and the FDA 21 CFR 1040.10 and 1040.1. These
products shall not be installed in an optical network handling above Class 1 level.

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F/O port specifications
Option F/O
Port
Transmit
WL
nm
Minimal
Output
Power
dBm
Maximal
Output
Power
dBm
Receive
WL
nm
Typical
Receive
Sensitivity
dBm
Maximal
Input
Power
dBm
MM Duplex
SC,MM 1310 - 20 - 14 1310 -30 -14
SMR7 Duplex SC,
SM 1310 -20 -8 1310 -30 -3
SMR Duplex SC,
SM 1310 -16 -8 1310 -30 -3
SM Duplex SC,
SM 1310 -15 -8 1310 -33 -3
SM/L Duplex SC,
SM 1310 -11 0 1310 -33 -3
SM/L2 Duplex SC,
SM 1310 -3 2 1310 -35 -3
SML3 Duplex SC,
SM 1550DFB -4 0 1550 -36 -3
SM/LX Duplex SC,
SM 1550DFB 0 5 1550 -38 -3
SMRF13
Simplex
SC, SM
SFS
1310 -15 -7 1550 -32 -3
SMRF15
Simplex
SC, SM
SFS
1550 -15 -7 1310 -32 -3
SMXF13
Simplex
SC, SM
SFS
1310 0 5 1550 -37 - 3
SMXF15
Simplex
SC, SM
SFS
1550DFB -5 0 1550 -37 - 3
SM= Single Mode; SFS= Single Fiber Strand
10 ─Twisted Pair cabling connection
The S.CON1 provides one shielded RJ-45 connector to interface to the twisted pair
link. The port operates in Auto –negotiation mode and according to the position of the
MDI-II / MDI-X selector switch located on the front panel.
Use a shielded Cable Type 5 or higher grade, up to 100m (330ft) long.
STP cable carries a higher quality of signal and is less sensitive to environmental
noise. The 10/100BaseTX port (configured as MDI-X) is normally designed to be
connected directly to a workstation, using a standard straight through patch cable. In
order to connect a Hub or a switch, a crossover cable is normally used.
Rules: With the same type of TP ports (MDI-X < > MDI-X, or MDI > < MDI) use a
crossover cable. With different ports (MDI-X < > MDI) use a straight cable
Set up the selector (MDI-II/MDX) located on the front panel according to the available
TP type cable and the setup of the remote connected TP port. Check if the remote TP
port does support Auto-Negotiation and act accordingly.

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11 ─DIP switches setting
Each S.CON1 unit is equipped with an array of 7 DIP switches that facilitate the
proper setting of the TP and F/O ports for optimal operation.
Each port may have different settings.
A wrong setting will not necessarily result in a channel malfunction, but rather in non-
optimal operation (for instance - HDX operation instead of FDX).
The switches are recessed in the front panel to avoid incidental change of position.
Use a flat-head miniature screwdriver (or a similar tool), insert it through the slot, hold
it vertically to the panel against the switch to be set, and change its position up or
down according to the following table.
Note: the S7 switch is effective only in the S.CON1M series.
After each configuration change, move the S6 DIP switch to down position.
When S6 is down (reset operation) the unit will not operate.
After a few seconds, flip the S6 back to UP position.

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12 ─Fault Propagation mechanism.
The main purpose of fault propagation mechanism implemented in media converters
is to allow real-time notification of any link failure to upper hierarchy devices (e.g.
switches/routers with redundant links), consequently activating an alternate path to
communicate with a mission critical site. However, such mechanisms implemented in
other vendors’ products, may suffer from an inherent drawback. These are typical bi-
directional mechanisms: fault propagates both from fiber to TP port and from TP to
the fiber port. When such devices are connected to modern devices implementing
FEF (Far End Fault) it may become a lethal combination: while propagating the fault
as intended, when fault (original link break) is repaired (i.e. original link is restored),
such systems will hang and can be restored only by manual intervention.
The powerful fault-propagation mechanism implemented in the S.CON1 prevents
such deadlock. The fault propagation is bi-directional FO >TP and TP>FO
(enabled/disabled by means of DIP switch 5). When S.CON1 senses loss of its F/O
link, it deliberately cuts its TPO link (FO>TP).
If the TP port link fails, the FP will disable the FO port Link (TP>FO).
DIP Switch S5 enable/disable bi-directional Fault Propagation (FO>TP and
TP>FO).
The FP implemented in S.CON1 allows free operation with all types of FP or FEF
enabled devices.
The mostly common use is (at the central site) FO>>TP propagation: failure of the
fiber link will cut the TP link connected to the router/switch, which in turn will activate
an alternate path to the remote site (in our case: S.CON1) and/or alert the network
manager.
The FP mechanism should be disabled while installing or maintaining the network.
Normally while installing a F/O network, it is common to establish first a F/O link and
only afterwards to connect the network devices to the converters. The Link Test
mode is for diagnostic purposes.
The Link Test in the S.CON1 unit is enabled through the DIP switch S5 (UP position)
disabling the FP mechanism.
In this mode each of the link segments (typically 3: TP, F/O, TP) provides separate
and true indication of its integrity therefore the defective link can be identified and
consequently repaired. (following the FP activity due a link failure). After repairing (or
completing installation), set the DIP switch S5 to down position to resume the Fault
Propagation mechanism.
While in TEST mode, the S.CON1 provides full functionality and run normal data
traffic, except the fault propagation is disabled. In other words, if one or both
converters forming the link are – by mistake or negligence left in this mode, it will not
obstruct the normal data traffic.
When interconnecting some legacy devices, you may experience linking-up
problems. In such case, it is recommended to disable momentarily the Fault
Propagation feature (remain in Test Mode). If however, the FP is needed, make sure
that all the links (F/O and UTP) are operative in the network, and only afterwards re-
enable the FP mechanism.

S.CON1 Single Channel TX/FX Converter
19
13 ─FP and FEF in action
1. When the Converter B senses a F/O Link failure on its Rx line, it transmits a FEF
signal to Converter A and since the FO>TP Fault Propagation is enabled via DIP
switch S5, it will also cut its TP port link. Both F/O and TP Link/Act LEDs are off at
Converter B.
2.The Converter A will receive the FEF signal and cause its FO link indication to be
dropped (F/O Link/Act = off).
3. The Converter A has the FO>TP Fault Propagation enabled and senses that its
F.O port Link is dropped and therefore it will cut its TP port Link.
Converter A will show its TP Link/Act LED off.

S.CON1 Single Channel TX/FX Converter
20
14 ─Troubleshooting
Note: Reset the device (S6) and disable momentarily the FP (S5 Down) prior to performing the
following procedures.
Problem Indication Corrective Action
No power Main power LED
not lit (PWR LED)
Check that the power supply cable is firmly
connected to the main power supply and rack
mount power source.
Check that the AC input power source is between
100 and 240VAC.
Network problems No communication
on network
On the “ MODE SETUP “ dip switches, verify that
the S6 is in the up position (normal position).
Move S6 to the DOWN position and move it back
to the UP position after one second (Reset
operation).
Copper link not
working at all
Link LED not lit Verify if the remote connected TP port does
support Auto-Negotiation mode and set the dip
switches accordingly.
Check that MDI-II/MDI-X switch is in position X “for
a switch or a hub, in position “II” for a station or an
up-link port.
Check that the connection cable is well connected
at both ends. Verify that the correct LEDs are light.
On the front panel DIP switches, move S6 to the
DOWN position, and move it back to the UP
position after one second (reset).
The remote TP
station does not
support Auto-
Negotiation mode
Unpredictable Change the “MODE SETUP “DIP switches
according to the remote TP port speed and
Half/Full Duplex mode. Move the S6 to the DOWN
position and move it back to the UP position after
one second (reset operation).
Fiber link not
working
Link\Act LED not
Lit
Check that the receive fiber is properly connected
to the transmit port of the remote fiber device
AND the transmit port to the receive port of the
remote device.
Check the position of the “MODE SETUP “ S4
Check that the fiber optic power is the required
receive power on the receive fiber connector at the
S.CON1 end.
Check if the SD (Signal Detect) LED is lit and
according to drawing (page 16) you may
determine which fiber line is faulty (if this is the
case).
Improper network
traffic
Runt and late
collision
On the front panel switches, move S6 to DOWN
position and move it back to the UP position after
one second. (Reset operation).
Check ports configurations on the DIP switches.
Verify that both ends of F/O links are set to the
same mode (Half Duplex OR Full Duplex).
Check that both sides of UTP connection are in
same mode (10Mbps Half duplex OR 10Mbps full
duplex, 100Mbps Half duplex OR 100Mbps full
duplex).
If the problem persists after carrying out the above procedure, do the following: replace
the suspected S.CON with another similar working unit, perform the requested setup. If
that has solved the problem, send your S.CON for repair.