Planet EM-GT70X User manual

1000Base-T to 1000Base-SX/LX
TP to fiber
Gigabit Ethernet Media Converter

Trademarks
Copyright PLANET Technology Corp. 2002.
Contents subject to revision without prior notice.
PLANET is a registered trademark of PLANET Technology
Corp. The information in this manual is subject to change
without notice. All other trademarks belong to their respective
owners.
FCC Warning
This equipment has been tested and found to comply with
the regulations 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 this
user’s guide, 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 his
own expense.
CE Mark 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.
Revision
User's manual for PLANET Gigabit Ethernet Converter
Rev 1.0 (Feb. 2002)
Part No: 2010-000006-001

1
1. Overview
Thank you for purchasing PLANET GT-70X family Gigabit
Ethernet Fiber-optic Converter. This converter is used to
convert one type media signal to other type equivalent that
allows two type segments connect easily, efficiently and
inexpensively. This converter can be used as a standalone
unit or as a slide-in module to the 10”/19” media chassis (up
to 15 units) for a multi-mode and single-mode Fiber
combined networks at a central wiring closet. Please contact
with your sales representative for more about the 10”/19”
media chassis.
2. Model List
Your Gigabit Ethernet Converter comes with one of the
following models.

GT-702:1000Base-T to 1000Base-SX (SC)

GT-702S:1000Base-T to1000Base-LX (SC)

GT-705:1000Base-T to 1000Base-SX (LC)
In the following sections, the term “GT-70X” indicates the
product family above, the term “MM” and “SM” represent
Multi-Mode and Single Mode fiber-optic mode.
3. Checklist
Your GT-70X carton should contain the following items:

The Gigabit Ethernet Converter

AC-DC Power Adapter (Output: 5VDC, 1 A max.)

This user’s guide
If any item is missing or damaged, please consult the dealer
from whom you purchased your Gigabit Ethernet Converter.

2
4. Product Outlook
Right View (GT-70X)
One fiber-optic connectors on the left, One TP connectors
on the right and three LED indicators.
Rear View (GT-70X)
One DC jack for DC power input.

3
5. Installing the Converter
Please follow these steps to install the converter:
• Turn off the power of the device/station in a network to
which the GT-70X will be attached
• Ensure that there is no activity in the network
• Attach fiber cable from the GT-70X to the fiber network.
TX, RX must be paired at both ends
• Connect the 5VDC power adapter to the GT-70X and
verify that the Power LED lights up.
• Turn on the power of the device/station, the PWR LEDs
should light when all cables are attached
Note:
 Please refers to section 8 for detailed wiring information
of the GT-70X
GT-70X
1000Base-T
Cat. 5/5e TP
Cable Network
1000Base-SX/LX
Fiber Network
1000Base-SX/ LX
Gigabit Ethernet Converter
 To prevent from optic acceptor malfunction, check the
both wires / transmitter before power on the converter.
6. Duplex Mode Support
The GT-70X is one-channel media conversion between
1000Base-T and 1000Base-SX/LX.
1000Base-T port can work under Auto-negotiation and
fixed 1000Mbps full duplex mode.

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1000Base-SX/LX fiber port only allow to work under fixed
1000Mbps full duplex mode.
Note:
 It doesn’t support Auto-negotiation and can not work with
1000Base-SX/LX interface that can not configure to
fixed 1000Mbps full duplex.
7.LED indication
LED Color DESCRIPTION
Fiber /
ACT Green Lit: when the fiber port run in fix 1000Mbps and packet is traveling.
TP/ ACT Green Lit: when the packet is traveling.
Fiber/
LNK Green Lit: when fiber connection is good.
TP/LNK Green Lit: when TP connection is good.
FDX Green Lit: when the TP port runs in 1000Mbps
Full duplex
PWR Green Lit :when +5VDC power detected
8. Cable Connection Parameter
The wiring details are as below:
Cables:
Standard Fiber Type Cable Specification
1000Base-SX
(850nm) Multi-mode 50/125µm or 62.5/125µm
Multi-mode 50/125µm or 62.5/125µm1000Base-LX
(1300nm) Single-mode 9/125µm

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Wiring Distances:
Standard Fiber Diameter
(micron) Modal Bandwidth
(MHz * km)
Max. Distance
(meters)
1000Base-SX MM 62.5
62.5
50
50
100
200
400
500
220
275
500
550
MM 62.5
50
50
5
4
5
550
1000Base-LX
SM 9 N/A 5000*
*Note: The Single-mode port (1000Baes-LX port) of GT-702S is
complied with LX 5 kilometers and provides additional
margin allowing for a 10 kilometers Gigabit Ethernet link
on single mode fiber
9. GT-70X Technical Specifications
The GT-70X comes with the following standard features:
• Standard : IEEE802.3z, Gigabit Ethernet 1000Base-
SX/LX, IEEE802.3 ab 1000Base-T
• Connectors :

One Twisted pair 1000Base-T UTP

GT-70X:one Fiber-optic, 850nm wavelength, MM

GT-70XS:one Fiber-optic, 1300nm wavelength,
SM/MM
Connector-type different with models
• Data Transfer Rate : 1000Mbps
• Duplex mode support : Full duplex mode
• LED indicators : PWR, FDX, Fiber/LNK/ACT,TP/LNK/ACT
• Power Requirement : 5V ,1A
• Ambient Temperature : 0°to 50°C (operating)
• Humidity : 5% to 90%
• Dimension : 26 x 70 x 97mm (HxWxD)

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• Cable :

UTP: 4 pair category 5/5e

MM: 50/125
µ
m or 62.5/125
µ
m optic fiber

SM: 9/125
µ
m optic fiber
• Wiring : Please refer to Section 8
Connecting to the Gigabit Ethernet products, please refer to
the device’s Technical Manual.
10. Power information
The power jack of GT-70X is with 2.5mm in the central post
and required +5VDC power input. It will conform to the
bundled AC-DC adapter and Planet’s Media Chassis.
Should you have the problem to make the power connection,
please contact your local sales representative.
Please keep the AC-DC adapter as spare parts when your
GT-70X is installed to a Media Chassis.
Part No:2010-000006-001 ISO9002