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TC Communications TC3720, User Manual

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TC Communications TC3720 User Manual Download Page 31

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TC3720

User's Manual

Rev. 1.5

Chapter 6 - Troubleshooting

General

Alarm conditions occur whenever an optical problem or "fault" condition is detected by the TC3720's.

All LEDs are Off

If no LEDs are lit on the unit, check the DC power supply, terminal block connector plug, and/or the power
source.  If the problem persists, contact the Technical Support Department at TC Communications, Inc.

Alarm LED

When an alarm condition is detected, the ALARM LED will flash.  The following fault conditions will cause
the alarm to be triggered:

1.

Power is lost to any unit in the SHR. This will cause adjacent units to go into alarm, indicating a fault in
the SHR.

2.

Fiber optic cable breakage in the SHR will also trigger an alarm condition.

Other LEDs

1.

Any fiber optic cable breakage in the SHR will trigger an alarm condition between any two adjacent
units as well as on the Master. Depending on which fiber port F1 or F2 the breakage occurs, the
corresponding F1/1X or F2/X2 LEDs will also flash.

Optic Cable Types

Conventionally, fiber optic cable with yellow-colored insulation is used for Single Mode applications; gray or
orange-colored insulated cable is for Multimode use.  If Multimode cable is used in a Single Mode application,
the test results could be erroneous and confusing.

Calculating the Fiber Optic Loss Budget

The fiber optic link and/or connectors are frequently the source of various problems.  Check out the
connectors and the integrity of the link first.  Ideally, the link should be calibrated for total loss after the
installation has been completed.  This will accomplish two things: (1) it will verify that the total loss of the
link is within the loss budget of the device and (2) it will provide a benchmark for future testing.  For example,
a system that has been tested as having 6dB total loss when installed and suddenly tests out as having a loss
of 10dB probably has a connector or link problem.

*These numbers are listed for reference only.  We recommend an OTDR reading be used to determine actual link loss.

To calculate the loss budget:

Multimode 850nm

:

3 dB loss per km on 62.5/125µm cable*

Multimode 1310nm

:

2 dB loss per km on 62.5/125µm cable*

Single Mode 1310nm

:

0.5 dB loss per km on 9/125µm cable*

Single Mode 1550nm

:

0.4 dB loss per km on 9/125µm cable*

Summary of Contents for TC3720

Page 1: ...ny specifica tion TC Communications Inc reserves the right to change or modify the contents of this manual at any time without prior notification TC3720 Self Healing Industrial Ethernet Fiber Optic Sw...

Page 2: ...ware Configuration 11 Self Healing Ring SHR ID Setting 11 Hardware SHR ID Settings 11 Examples To Set the SHR ID 11 Bench Test 12 Configuring the Master Unit 12 Configuring the Slave Units 13 Chapter...

Page 3: ...fications 32 Electrical 32 Optical 32 Visual Indicators 32 Alarm 32 Power Sources 32 Temperature 32 Physical Standalone Rackmount Unit 32 Appendix A 33 Return Policy 33 Warranty 33 Appendix B 34 Setti...

Page 4: ...720 offers a sophisticated Self Healing Ring scheme Fault conditions are detected on both Tx and Rx upstream and downstream of each unit and automatically re routed to maintain Ring integrity A Web ba...

Page 5: ...ength 1310nm Single Mode LASER Connector ST FC SC Single Mode 1310nm 75km Model Transmitter FP Laser typical Launch Power 3 to 2dBm 1310nm 9 125 m Receiver PIN Diode typical Sensitivity 36 0 dBm 1310n...

Page 6: ...typical Sensitivity 33 0 dBm 1310nm 1550nm 9 125 m Optic saturation level 3 dBm Loss Budget 1310nm 1550nm Single Mode 9 125 m 29 dB Distance 1310nm 1550nm Single Mode 9 125 m up to 50km distance Wavel...

Page 7: ...Off when connection is good Speed of F1 or F2 is fixed to 100Mb sec when Ethernet Activity at the fiber optic port is detected when no optical link is established Dip Switches Self Healing Ring Up Dis...

Page 8: ...r Slave Not Used Serial DB9 port 9600 8 N 1 9600 Baud 8 data bits no parity 1 stop bit Reset Button Used to reset the unit back to the current hardware settings 1 Unplug the power to the unit 2 Push a...

Page 9: ...in power redundancy feature While only one connection is required to power the unit both connectors can be used simultaneously When power redundancy is utilized both power A B share the load If one p...

Page 10: ...The units are configured through the Management port RJ 45 connector on the rear panel of the switches See Chapter 4 Software Configuration Note If you want to configure the IP address username or pas...

Page 11: ...tion ID 2 Set dip switch 2 to the down position and the rest to the up position ID 3 Set dip switches 1 and 2 to the down position and the rest to the up position ID 4 Set dip switch 3 to down the pos...

Page 12: ...the down position 2 Select the fiber ports to form the SHR set the F1 1X and F2 2X dip switches on the front panel to the up position 3 Enable the MSTR dip switch on the rear panel to the down positio...

Page 13: ...panel to the down position 7 The MSTR SLVE LED on the front panel should be off Repeat steps 1 5 for the remaining slave units After completing the configurations for the Master and Slave units 1 Inte...

Page 14: ...at of your PC refer to Console Port Settings on page 26 To configure the TC3720 simply enter the default IP address of the TC3720 in the Web browser s address box For example if the unit is set to Mas...

Page 15: ...ort SHR ID SHR Master ID Port Settings Copper Ports 1 6 Port State Speed Duplex Ingress Limit Egress Limit Flow Control Fiber Ports F1 and F2 Port State Ingress Limit Egress Limit Flow Control SHR Sta...

Page 16: ...dow as in figure 5 and you can begin the configurations You may change the values names of the Switch Name Location or Contact fields as you like or you can leave as they appear The location field wil...

Page 17: ...e All SHR ports of the switches on the ring should be kept the same SHR ID Any integer All units in a ring must have a unique SHR ID SHR Master ID All units in a ring must be set to the same SHR Maste...

Page 18: ...ngs link on the left side of the page to configure either the RJ 45 Ports 1 through 6 or the Fiber Ports F1 or F2 settings After clicking the Port Settings link you will see the following window shown...

Page 19: ...te limiting for inbound traffic data going into the TC3720 port The default value of the rate limit is None no limit on the inbound traffic The rate limit can be set to 128K 256K 512K 1M 2M 4M 8M 16M...

Page 20: ...20 TC3720 User s Manual Rev 1 5 Software Configuration Continue Figure 9 TC3720 Port Settings Dialog Box Ingress Limit Rate limiting for inbound traffic...

Page 21: ...hen you click on this button you will see all the units in the SHR link working under normal conditions as in figure 10 Note When there is a fiber breakage in the link there will be a star in front of...

Page 22: ...reakage in the SHR link The particular units with broken fiber links will be displayed with a star in front of its SHR ID s To view the details on the fiber breakage click on the Error Report button a...

Page 23: ...how the switch ID related fiber port IP address and Location Field where the fiber breakage occurs two units will be displayed for each broken link The Master will display information on all the units...

Page 24: ...name and or password you can do so by following the steps below 1 Enter the new username and or password and click Apply You will then see a window as in figure 14 on page 25 Click reset to save all t...

Page 25: ...25 TC3720 User s Manual Rev 1 5 Figure 14 TC3720 New Settings Saved Window Figure 15 TC3720 Login with New Settings...

Page 26: ...ype password after the Password prompt Note You will not see the password characters when typed 8 When password has being entered correctly you will see Password Accepted 9 At this point you can conti...

Page 27: ...t ip 192 168 254 123 Set netmask Set Unit s Netmask E g Set netmask 255 255 255 0 Set gateway Set Unit s Gateway IP E g Set gateway 192 168 254 1 Set username Set login username E g Set username john1...

Page 28: ...28 TC3720 User s Manual Rev 1 5 Show Command The show command will show the current IP settings of the TC3720 unit Figure 18 TC3720 s Show Command...

Page 29: ...9 TC3720 User s Manual Rev 1 5 Telnet Settings You can also use Telnet to set the IP configuration username and password Note The Telnet default timeout is two minutes Figure 19 TC3720 s Telnet Settin...

Page 30: ...y changes Contact your network administrator if you are unsure about the settings Improper settings may result in disruption of the existing network Under the TCP IP Properties Select the Specify an I...

Page 31: ...le with yellow colored insulation is used for Single Mode applications gray or orange colored insulated cable is for Multimode use If Multimode cable is used in a Single Mode application the test resu...

Page 32: ...FULL COL LINK ACT each port Optical Signal Status 100M FULL COL LINK ACT each port Alarm Dry Contact Normal Open Power Source Standard 12VDC 500mA Optional 24VDC 48VDC 125VDC or 115 230VAC with an ext...

Page 33: ...irst inspect such goods at the premises of the Buyer or may give written authorization to Buyer to return the goods to TC Communications Inc transportation charges prepaid for examination by TC Commun...

Page 34: ...wn Up Up Up 16 Up Up Up Up Down Up Up 17 Down Up Up Up Down Up Up 18 Up Down Up Up Down Up Up 19 Down Down Up Up Down Up Up 20 Up Up Down Up Down Up Up 21 Down Up Down Up Down Up Up 22 Up Down Down Up...

Page 35: ...Down Down Down Up Down Up 47 Down Down Down Down Up Down Up 48 Up Up Up Up Down Down Up 49 Down Up Up Up Down Down Up 50 Up Down Up Up Down Down Up 51 Down Down Up Up Down Down Up 52 Up Up Down Up Dow...

Page 36: ...Up Up Down Down Up Down 90 Up Down Up Down Down Up Down 91 Down Down Up Down Down Up Down 92 Up Up Down Down Down Up Down SHR ID Setting 3 1 2 3 4 5 6 7 Dipswitch Value 20 1 21 2 22 4 23 8 24 16 25 3...

Page 37: ...n Up Down Down Down 117 Down Up Down Up Down Down Down 118 Up Down Down Up Down Down Down 119 Down Down Down Up Down Down Down 120 Up Up Up Down Down Down Down 121 Down Up Up Down Down Down Down 122 U...

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