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INSTALLING THE TRFOT-3

 

Page 3-2

Table 3-1 provides a quick reference for the switch settings for Station, 
Lobe Concentrator/Trunk Coupling Unit (TCU), Ring In (RI), and 
Ring Out (RO) applications. A description of each switch is also listed 
below.

 

Switch A

 

This switch selects Station/RI or Lobe/RO applications for the 
TRFOT-3’s copper connector. Select ON to attach the TRFOT-3’s 
copper connector to a Station adapter or Ring In port. Select OFF to 
connect the copper connector to a concentrator lobe port or Ring Out 
port.

 

Switch B

 

This switch selects RI/RO or Station/Lobe applications for the 
TRFOT-3. Select ON for RI/RO applications. Select OFF for Station/
Lobe applications.

 

Switch C

 

This switch enables/disables the phantom drive for RI/RO applications 
with other Cabletron products. Select ON to disable the phantom 
drive. Select OFF to enable the phantom drive.

 

Switch D

 

This switch selects modes on the TRFOT-3’s fiber optic connector. 
Select ON to attach the TRFOT-3’s fiber optic connector to a Cabletron 
fiber RI/RO port, for example the TRRMIM-A/2A/4A. Select OFF to 
attach the fiber optic connector to an IEEE 802.5J compatible RI/RO 

Table 3-1. Switch Settings

 

Switch

Station

Lobe 

(TCU)

Ring In

Ring Out 

 

A

On

Off

On

Off

B

Off

Off

On

On

C

Off

Off

On - Disables phantom drive.
Off - Enables phantom drive (for 

use with Cabletron propri-
etary devices only).

D

Off

Off

On - Cabletron proprietary devices.
Off - 802.5J compatible device.

Summary of Contents for TRFOT-3

Page 1: ...TRFOT 3 TOKEN RING SINGLE MODE FIBER OPTIC TRANSCEIVER LOBE CABLE CONVERTER USER S GUIDE CABLETRON SYSTEMS P O Box 5005 Rochester NH 03867 0505 The Complete Networking Solution ...

Page 2: ...QUENTIAL DAMAGES WHATSOEVER INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF KNOWN OR SHOULD HAVE KNOWN THE POSSIBILITY OF SUCH DAMAGES Copyright October 1993 by Cabletron Systems Inc P O Box 5005 Rochester NH 03867 0505 All Rights Reserved Printed in the United States of America Orde...

Page 3: ...perator s manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause interference in which case the user will be required to correct the interference at his own expense WARNING Changes or modifications made to this device which are not expressly approved by the party responsible for compliance could void the user s authority t...

Page 4: ...MENTS SPECIFICATIONS 2 1 FIBER OPTIC CABLE SPECIFICATIONS 2 1 2 2 COPPER CABLE SPECIFICATIONS 2 2 2 3 OPERATING SPECIFICATIONS 2 3 CHAPTER 3 INSTALLING THE TRFOT 3 3 1 UNPACKING THE TRFOT 3 3 1 3 2 SETTING THE CONFIGURATION SWITCHES 3 1 3 3 ATTACHING THE TOKEN RING CABLE TO A CONCENTRATOR 3 3 3 4 ATTACHING FIBER OPTIC CABLES 3 3 3 5 CONNECTING POWER 3 5 3 6 MOUNTING THE TRFOT 3 3 6 3 7 USING LANVI...

Page 5: ...es cabling requirements network guidelines and operating specifications for the TRFOT 3 Chapter 3 Installing the TRFOT 3 contains instructions for mounting the TRFOT 3 and attaching the cables to your network It also describes the front panel LANVIEW LEDs 1 2 TRFOT 3 OVERVIEW The TRFOT 3 Token Ring Single Mode Fiber Optic Transceiver converts single mode fiber lobes to copper and or copper lobes t...

Page 6: ...her end of a fiber link Ring Speed Compatibility The TRFOT 3 supports both 4 and 16 mb sec ring speeds and senses the ring speed automatically 1 4 RECOMMENDED READING We recommend the following publications for more information on implementing a token ring network Local Area Networks Token Ring Access Method IEEE Standard 802 5 LAN Troubleshooting Handbook Mark Miller 1989 M T Publishing Inc 1 5 G...

Page 7: ...ble is within an acceptable level of 10 0 dB or less for any given fiber optic cable segment Fiber Optic Budget and Propagation Delay Fiber optic budget is the combination of the optical loss due to the fiber optic cable in line splices and fiber optic connectors Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device When determining the max...

Page 8: ... allowable length for copper cable is 10 feet Connector Pinouts Table 2 2 provides a cross reference of copper cable connector pinouts Media Filters To connect an Unshielded Twisted Pair UTP segment from a token ring concentrator to the TRFOT 3 you need to install a Type 3 media filter such as the Cabletron Systems TRMF 2 Use the TRMF 2 at the concentrator end of the connection as shown in Figure ...

Page 9: ... these specifications at any time without notice POWER REQUIREMENTS Input Voltage 9 12 VDC Input Current 700 ma Maximum FIBER OPTIC TRANSMIT RECEIVE SPECIFICATIONS Transmit Power 15 1 dBm Receive Sensitivity 32 dBm Maximum Receive Power 6 99 dBm SAFETY AND ENVIRONMENTAL APPROVALS This device meets FCC Class A UL and VDE requirement for emissions PHYSICAL Dimensions 2 875 H x 5 250 W x 875 D inches...

Page 10: ...tective plastic bag 3 Visually inspect the TRFOT 3 If there are any signs of damage contact Cabletron Systems Technical Support immediately 3 2 SETTING THE CONFIGURATION SWITCHES Figure 3 1 shows the location of the TRFOT 3 s four configuration switches Cabletron sets the switches for Station applications If you need to change the switches for other applications follow steps 1 3 Figure 3 1 TRFOT 3...

Page 11: ...r RI RO applications Select OFF for Station Lobe applications Switch C This switch enables disables the phantom drive for RI RO applications with other Cabletron products Select ON to disable the phantom drive Select OFF to enable the phantom drive Switch D This switch selects modes on the TRFOT 3 s fiber optic connector Select ON to attach the TRFOT 3 s fiber optic connector to a Cabletron fiber ...

Page 12: ...aching a UTP Segment to the TRFOT 3 3 4 ATTACHING FIBER OPTIC CABLES Note The fiber optic cables must be crossed over i e TX on one end to RX on the other end when connected To facilitate hookup label the fiber optic strands 1 and 2 To connect a fiber optic link segment to a TRFOT 3 1 Remove the protective plastic covers from the fiber optic ports on the applicable port on the module and from the ...

Page 13: ...Check that the FO Link LED is lit If the LED is not lit perform each of the following steps until it is Note Perform the following steps only if the device attached to the TRFOT 3 is a Cabletron device for example the TRFMIM 32 36 38 If you attach a non Cabletron device to the TRFOT 3 the FO Link LED may not light even though a good link may exist a Check that the power is turned on for the device...

Page 14: ...n external power supply Plug the power supply connector into the Power Input port on the TRFOT 3 then plug the power supply into a standard wall outlet Figure 3 4 Attaching the Power Supply TX RX 802 5 TOKEN RING COPPER TO SINGLE MODE FIBER OPTIC TRANSCEIVER WITH LANVIEW P W R C U F O LNK POWER REQUIRED 9 12V 700mAMAX DATACAPABILITY 4 16Mb sAUTO SENSING U L SA THIS DEVICE COMPLIES WITH PART15 OFTH...

Page 15: ... cables to the wall using the adhesive backed cable mounts and tie wraps as shown in Figure 3 5 Figure 3 5 Mounting the TRFOT 3 Cable Mounts and Tie Wraps TX RX 802 5 TOKEN RING COPPER TO SINGLE MODE FIBER OPTIC TRANSCEIVER WITH LANVIEW P W R C U F O LNK POWER REQUIRED 9 12V 700mAMAX DATACAPABILITY 4 16Mb sAUTO SENSING U L SA THIS DEVICE COMPLIES WITH PART15 OFTHE FCC RULES OPERATION IS SUBJECTTOT...

Page 16: ...connecting the TRFOT 3 to the device Verify that it is installed correctly see Section 3 3 4 Reset the TRFOT 3 by cycling power 5 Reboot the PC containing the station adapter card and reload the adapter card software Table 3 2 LANVIEW LEDS LED LED Color Definition PWR Green Off TRFOT 3 is receiving power TRFOT 3 is not receiving power CU Green Flashing Green Red Phantom detected valid copper link ...

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