Omnitron Systems Technology GX-T User Manual

iConverter

Chassis

Backplane

GX/T Module

Internal

10/100/1000

switch chip

Fiber

1000 port

UTP

10/100/1000 port

NMM Module

NMM
front /
back
select

NMM UTP

10 port

4Tx Module

Internal
10/100

switch chip

4-port 10/100 UTP

Switch

“A” Link

“B” Link

A Port

B Port

A Port

B Port

A Port

B Port

Slot 1 (odd) Slot 2 (even) Slot 3 (odd)

®

GX/T User Manual

Port 1 (P1)

Port 2 (P2)

iConverter

Fiber

Type

MM 220m / 550m

GX/T Dual Fiber Modules

Distance

1

8522-0 8524-0 8526-0

Connector Type

SC MT-RJ LC

SM 12 km 8523-1 8525-1 8527-1
SM 34 km 8523-2 - 8527-2
SM 80 km 8523-3 - 8527-3

iConverter

Fiber /

Connector

Type

GX/T Single-Fiber Modules

Distance

Tx: 1310nm,
Rx: 1550nm

Tx: 1550nm,
Rx: 1310nm

SM / SC 20 km 8530-1 8531-1
SM / SC 40 km 8530-2 8531-2

For wide temperature (-40 to 60º C), add a "W" to the end
of the mode l numbe r. Co nsult fac to ry for extended
temperature (-40 to 75º C) models.

OVERVIEW

The iConverter GX/T provides 10/100/1000BASE-T UTP
to 1000BASE-X Fiber conversion as well as rate
conversion between 10BASE-T, 100BASE-TX,
1000BASE-T and 1000BASE-SX/LX. Models are available
for multimode (MM) and single-mode (SM) dual fiber,
and single-mode single-fiber (SF).

The GX/T UTP port supports Half-Duplex and Full­Duplex modes and features an automatic crossover
mode for easy attachment to hubs, switches and
workstations.

The GX/T can be used as a standard two-port UTP to fiber
converter. It can also use its two additional 10/100
backplane ports to connect to adjacent modules and
accommodate flexible network configurations. The
iConverter 19-Module, 5-Module or 2-Module Chassis have
backplanes that facilitate connectivity between adjacent
modules.

The GX/T can be used in a managed or unmanaged
application. When managed, it must be installed in a
chassis with an iConverter Network Management Module
(NMM), GX/TM o r 10/100M.

ADVANCED FEA TURES

The GX/T features Port VLAN and T ag VLAN, which allow
complete control of traffic flow between the front-plane
UTP port, the fiber port and the chassis backplane ports.
The GX/T also features Port Access Control, which
facilitates enabling and disabling of individual ports. It
also supports reporting of MIB statistics.

Page 2 Page 3

NOTE: Using the advanced features listed above
requires the use of the Network Management Module
(NMM) and the NetOutlook

™

Management Software

(or third-party SNMP management software) or Telnet.
For more information on using and configuring these

advanced features, please refer to the NetOutlook
Management Software user manual.

PORT STRUCTURE

Using a 4-port switch design, the GX/T features two
front-plane ports (1000Mbps fiber Port 1 and a
10/100/1000 UTP Port 2) and two 10/100 Ethernet
backplane ports (A and B) that can connect to adjacent
modules within the same chassis.

When the GX/T backplane A and B ports are enabled
(using “BPAEN” and “BPBEN” DIP-Switches), they
connect via the chassis backplane to the slots on the
left and right sides of the GX/T module. When another
switch-based module with backplane port connections
(such as a second GX/T or an NMM) is installed in an
adjacent slot, it can be connected via the backplane to
the GX/T to facilitate a multi-module configuration.

GX/T Application Example:

Fig. 1 depicts a chassis with three modules plugged into
three adjacent backplane slots (beginning with an odd
numbered slot). The adjacent slots are connected via the
backplane using the A and B 10/100 links. In this example,
the GX/T in the center slot connects to the slot on its left
using the A link and the slot on its right using the B link.

Fig. 1 In-Band Managed GX/T Application

In this example, the module on the left is a Network
Management Module (NMM), connecting via its A backplane
port to the GX/T , facilitating In-Band management (via the
fiber uplink). The module on the right is a 4-port 10/100
switch module, connecting via its B link port to the GX/T,
facilitating a 1-Port GX/T and a 4-Port 10/100 Ethernet
switch with a fiber uplink configuration. This 3-module
configuration provides an effective 10/100/1000 UTP to
4-Port 10/100 managed switch with a gigabit fiber uplink
configuration.

This example shows how the GX/T can be used either
as a traditional managed or unmanaged media
converter, or to create flexible and effective network
switch configurations.

For more information about individual chassis A and B
backplane links, please refer to the specific chassis
user manual.

Page 4

LINK MODES

In order to accommodate different user needs, the GX/T
supports five different linking modes (see Fig. 2).

In Link Segment (LS), a port transmits a Link signal
independently of any received Link at any other port.
For example, the UTP transmits a Link regardless of
the fiber receiving a Link [Fig. 2(a) & (b)].

In Link Propagate (LP), a port transmits a Link signal
only when receiving a Link at its other port. For example,
the UTP transmits a Link only when receiving a Link at
the fiber port [Fig. 2(c)].

In Remote Fault Detection + Link Segment (RFD+LS),
the fiber port transmits a Link signal only when receiving
a Link at the fiber port. As a result, fiber faults (no Link
received at the fiber) are looped-back and can be
reported to the network core [Fig. 2(d)].

In Remote Fault Detection + Link Propagate (RFD+LP),
the UTP port transmits a Link signal only when receiving
a Link at the fiber port. The fiber port transmits a Link
signal only when receiving Link signals at both the fiber
port and the UTP port. As a result, fiber faults (no Link
received at the fiber) are propagated forward and looped
back for fault reporting at both the network core and the
customer location [Fig. 2(e)].

NOTE: Connecting two converters with both set to
RFD mode is not supported and will cause a “deadly
embrace” lockup.

Page 5 Page 6 Page 7 Page 8

LS

UTP

(a)

Switch 1 Converter A Converter B Switch 2

LS

Fiber

Fiber

LS

UTP

LS

(b)

Switch 1 Converter A Converter B Switch 2

LP

LP

(c)

Switch 1 Converter A Converter B Switch 2

LP

RFD+LS

(d)

Switch 1 Converter A Converter B Switch 2

LP

RFD+LP

(e)

Switch 1 Converter A Converter B Switch 2

SFD

SFD

(f)

Switch 1 Converter A Converter B Switch 2

LED Lit LED Blinking LED Off
LED Status depends on connected device

Fig. 2 GX/T Link Modes

In Symmetrical Fault Detection (SFD), the UTP port
transmits a Link signal only when receiving a Link at
the fiber port. The fiber port transmits a Link signal
only when receiving a Link signal at both the fiber port
and the UTP port. As a result, fiber faults (no Link
received at the fiber) are looped back and can be
reported to the network core. In addition, connecting
two back-to-back converters which are both set to
SFD facilitates dual-loop-back, where fiber faults are
reported to both ends of the network. A blinking fiber
link LED on a converter indicates a fault of the transmit
fiber or UTP cables of that converter [Fig. 3(f)].

NOTE: Converters in SFD mode must be deployed in pairs.

Fiber set to Auto-Negotiation Mode

When the Fiber is set to Auto-Negotiation Mode, the
device receiving the fault acts as if it is in RFD mode.
Link Segment, Link Propagate and Symmetrical Fault
Detection modes operate in the same manner (refer to
Fig. 2(d), (e) and (f).

NOTE: “Remote Fault Detection” (RFD) is not a valid
mode when the fiber is set to Auto-Negotiation. The
user should select LS, LP or SFD instead.

DIP-SWITCH SETTINGS
Front Panel DIP-Switch Settings

LP

=

Link Segment

Straight-Through

LS

=

Off
Off

=

Fig. 3 Front Panel DIP-Switches

Link Propagate

RFD

=

Remote Fault Detect
Symmetrical Fault Detect

SFD

=
=

Crossover

Link Segment/Link Propagate “LS/LP” DIP-Switch

This DIP-Switch controls the Link Propagate or Link
Segment modes. When the DIP-Switch is in the “LS”
position (factory setting), Link Segment mode is enabled.
In the “LP” position, Link Propagate mode is enabled.

Remote Fault Detection “RFD” DIP-Switch

When in the “RFD” position, the Remote Fault Detection
mode is enabled. Set the board-mounted Port 1
DIP-Switch to Manual Mode “MAN” for this feature.

NOTE: Connecting two converters with both set to
RFD mode is not supported and will cause a “deadly
embrace” lockup.

Symmetrical Fault Detection “SFD” DIP-Switch

When this DIP-Switch is in the “SFD” position, the
Symmetrical Fault Detection mode is enabled. When in
the “Off” position (factory setting), the Symmetrical
Fault Detection mode is disabled.

NOTE: Converters in SFD mode must be deployed in pairs.

RJ-45 Manual Crossover “= / X” DIP-Switch

When the board-mounted Manual Crossover Enable
DIP-Switch is set to “MANX,” the front panel RJ-45
Manual Crossover Switch is enabled. When connecting
the UTP to a hub or switch, set the front panel switch to
Straight-Through “=” (factory setting). When connecting
to a workstation, set it to Crossover “X.” Only use this
setting with 10T or 100Tx mode.

BOARD MOUNTED DIP-SWITCHES

ON

=

Backplane “A” Enabled

BPAEN

=

Backplane “B” Enabled

BPBEN

=

P1 Manual FO

MAN
MAN = P2 Manual UTP

= P2 Half Duplex

HD

UTP 10Mbps

10

=

10-100

=

UTP 10/100Mbps

MANX

=

Manual Crossover

P1 Auto Negotiate
P2 Auto Negotiate

UTP 100Mbps

UTP 1000Mbps

Auto Crossover

Off

Off

=

AN

=

AN

=P2 Full Duplex

FD

100

=
=

1000

=

AX

Fig. 4 Board Mounted DIP-Switches

Backplane A Enable DIP-Switch (BPAEN)

When the “BPAEN” DIP-Switch is in the “ON” position (right),
the iConverter GX/T module A backplane Ethernet port is
enabled. This port allows connectivity to an adjacent module.
When the “BPAEN” DIP-Switch is in the “Of f” position (left,
factory setting), the A port is isolated from the backplane.

Backplane B Enable “BPBEN” DIP-Switch

When the Backplane B Enable “BPBEN” DIP-Switch is
in the “ON” position (right), the iConverter GX/T module
B backplane Ethernet port is enabled. This port allows
connectivity to an adjacent module. When the “BPBEN”
DIP-Switch is in the “Off” position (left, factory setting),
the B port is isolated from the backplane.

Fiber Auto/Manual P1 “AN/MAN” DIP-Switch

Setting this DIP-Switch to P1 Auto-Negotiate “AN”
(factory setting) enables the Fiber Port to determine
duplex mode automatically. If the connected device
cannot provide the proper signal to indicate its own
mode of operation, this DIP-Switch should be set to P1
Manual “MAN.” This feature allows connections with
devices that do not auto-negotiate properly.

NOTE: When the fiber port is in Manual Mode,
sometimes a link-up will not occur with other devices.
Both devices must be set to the same mode (either
Manual or Auto-Negotiate) for the link-up to occur.

UTP Auto/Manual P2 “AN/MAN” DIP-Switch

Setting the P2 Auto/Manual Negotiate DIP-Switch to
Auto-Negotiate “AN” (factory setting) enables the
UTP port to determine the speed and duplex mode
automatically. If the connected device cannot provide
the proper signal to indicate its own mode of operation,
this DIP-Switch should be set to P2 Manual “MAN.”
This feature allows connections with devices that do
not auto-negotiate properly.

NOTE: Attaching an auto-negotiating UTP port to a non
auto-negotiating (manual/forced/hard-coded) UTP port
may result in an unpredictable port setting with excessive
collisions and poor link performance. When operating in
manual mode, both mating ports MUST be set manually to
the same speed and duplex mode.

Gigabit devices typically function only in Auto-Negotiate
Mode. 1000 Manual Mode is not a valid mode and will
result in an undefined response. Use Manual mode only
when selecting the 10 or 100 mode.

UTP Full/Half-Duplex P2 “FD/HD” DIP-Switch

When the UTP P2 Auto/Manual DIP-Switch (described
above) is in the P2 Manual “MAN” position, the UTP P2
Full/Half Duplex “FD/HD” DIP-Switch selects the duplex
mode for the UTP port. When set to Full-Duplex “FD”
(factory setting), the UTP port operates in Full-Duplex
mode. When P2 is set to Half-Duplex “HD,” the UTP
port operates in Half-Duplex mode.

UTP 10/100 P2 “10/100” DIP-Switch

When the UTP P2 Auto/Manual DIP-Switch is in the
Auto-Negotiate “AN” position and the “10-100/1000”
DIP-Switch (described below) is set to “10-100,” the
“10/100” DIP-Switch determines the highest speed of
the UTP P2 port in the following manner:

When the “10/100” DIP-Switch is set to the “100” position,
P2 operates at 100Mbps or less, depending on the speed
of the connected device.

When the “10/100” DIP-Switch is set to the “10” position,
P2 operates only at 10Mbps.

When the UTP P2 Auto/Manual DIP-Switch is in the Manual
“MAN” position and the UTP “10-100/1000”
DIP-Switch (described below) is set to “10-100,” the
“10/100” DIP-Switch determines the speed of the UTP P2
port. When set to “100” (factory setting), the UTP port will
operate at 100Mbps. When set to “10,” the UTP port will
operate at 10Mbps.

UTP 10-100/1000 P2 “10-100/1000” DIP-Switch

When the P2 “AN/MAN” DIP-Switch is set to the
Auto-Negotiate “AN” position, the “10-100/1000”
DIP-Switch operates in the following manner:

When set to “1000,” P2 operates at 1000Mbps or less,
depending on the speed of the connected device.
When set to the “10-100” position, the speed is selected
by the UTP “10/100” DIP-Switch.

When the P2 “AN/MAN” DIP-Switch is set to Manual
“MAN” mode, the “10-100/1000” DIP-Switch must be
set to the “10-100” position and the speed is selected
by the “10/100” DIP-Switch.

NOTE: Setting the “10-100/1000” DIP-Switch to the
“1000” position when in Manual mode is not permitted
(per the IEEE 802.3 standard) and will result in
unpredictable port behavior.

Auto/Manual Crossover Enable P2 “AX/MANX”
DIP-Switch

When the Manual/Auto Crossover Enable DIP-Switch
is set to Auto Crossover “AX” (factory default), the
front panel crossover switch is disabled and the RJ-45
crossover is selected automatically. When it is set to
Manual Crossover “MANX,” the front panel RJ-45
Manual Crossover DIP-Switch is enabled to allow a
manual setting in either Crossover or Straight-Through
connection.

Page 9

LED INDICATORS

LED Color Description
Pwr: Y ellow On--Power / Blink--test
Fiber FDX: Green On--Full-Duplex detected
Lk/Act Green On--Link / Blink--activity
AN: Green On--UTP Auto-Neg. enabled
10: Green On--10 Mbps link / Blink-activity
100: Green On--100 Mbps link / Blink-activity
1000: Green On--1000 Mbps link / Blink-activity
UTP FDX: Green On--Full-Duplex detected

Mounting and Cable Attachment

iConverter modules are hot-swappable and can be

installed into any chassis in the

iConverter family.

1. Carefully slide the iConverter module into the
installation slot, aligning the module with the
installation guides. NOTE: Ensure that the module is

firmly seated against the backplane.

2. Secure the module by securing the panel fastener
screw (attached to module) to the chassis front.

3. Attach the UTP port via a category 5 cable to a
1000BASE -T, 100BASE-TX or 10BASE-T Ethernet
device.

4. Attach the fiber port via an appropriate multimode
or single-mode fiber cable to a 1000BASE-X Ethernet
device. The

iConverter transmit (Tx) must attach to

the receive side on other device; the receive (Rx)
must attach to the transmit.

5. When using single-fiber (SF) media converter models,
the Tx wavelength on one end has to match the Rx
wavelength on the other. Note that based on this
guideline, the SF media converter models must be used
in pairs, such as the 8530-1 matched with the 8531-1.

Page 10 Page 11

Model Typ e GX/T

10BAS E-T, 100BASE -TX,

Protocols

1000BASE-T,

1000BASE-SX/LX

UTP
Connectors

Fiber
Connectors

SC, MT-RJ, LC , S ingle -Fi b er

RJ-45

SC

BP Enable, X-Over, LS/LP,

Controls

RFD, SFD, UTP Auto/Man,

10/100/1000, UTP FDX/HDX,

F/O Auto/Man

LED Displays
Dimensions

Weight
Compliance
Power

Requirement

Po we r, FO link, UTP l i nk , A uto ,

FDX/HDX, 10/100/1000

W:0.85" x D:4.5" x H:2.8"

8 oz.

UL, CE, FCC Class A

1.4A @ 3.3VDC (typical)

Standard: 0 to 50º C

Temperature

Wide: -40 to 60º C
Storage: -40 to 80º C

Humidity
Altitude
MTBF (hrs)

5 to 95% (non-condensing)

-100 m to 4000m
830,000

The operating description in this Instruction Manual is for use by
qualified personnel only. T o avoid electrical shock, do not perform any
servicing of this unit other than that contained in the operating
instructions, unless you are qualified and certified to do so by
Omnitron Systems T echnology , Inc.

Warranty

Warning

This product is warranted to the original purchaser against defects
in material and workmanship for a period of TWO YEARS from the
date of shipment. A LIFETIME warranty may be obtained by the
original purchaser by REGISTERING this product with Omnitron
within 90 days from the date of shipment. TO REGISTER,
COMPLETE AND MAIL OR FAX THE ENCLOSED
REGISTRATION FORM. Or you may register your product on the
Internet at www.omnitron-systems.com. During the warranty period,
Omnitron will, at its option, repair or replace a product which is
proven to be defective.

For warranty service, the product must be sent to an Omnitron designated
facility, at Buyer’s expense. Omnitron will pay the shipping charge to
return the product to Buyer’s designated US address using Omnitron’s
standard shipping method.

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper
or inadequate use and/or maintenance of the equipment by Buyer, Buyer­supplied equipment, Buyer-supplied interfacing, unauthorized
modifications or tampering with equipment (including removal of
equipment cover by personnel not specifically authorized and certified
by Omnitron), or misuse, or operating outside the environmental
specification of the product (including but not limited to voltage, ambient
temperature, radiation, unusual dust, etc.), or improper site preparation
or maintenance.

No other warranty is expressed or implied. Omnitron specifically
disclaims the implied warranties of merchantability and fitness for any
particular purpose.

Page 15

Page 12

Exclusive Remedies

The remedies provided herein are the Buyer’s sole and exclusive
remedies. Omnitron shall not be liable for any direct, indirect, special,
incidental, or consequential damages, whether based on contract, tort,
or any legal theory.

TECHNICAL SUPPORT :

For help with this product, contact our T echnical Support:
Phone: [phone]
Fax: [phone]
Address: Omnitron Systems Technology, Inc.

140 Technology Dr., #500

Irvine, CA 92618 USA
E-mail: [e-mail]
URL: www.omnitron-systems.com

Form: 040-08520-001E 9 /07

Page 16