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IMC Networks iMcV-E1, Руководство по эксплуатации

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10 

Loopback Testing 

The iMcV-T1/E1/J1-LineTerm includes three Loopback test modes: Copper 
Loopback, Fiber Loopback and Internal Fiber Loopback.   

The following illustrations show the path that a signal takes in each of the 
Loopback test modes. 

 

Each Loopback performs the following: 

•

 

Copies the incoming signal back out to the origin while continuing to transmit 
this signal downstream. 

•

 

Blocks upstream data from transmitting on the looped data line. 

Loopback testing is useful for troubleshooting problems with network connections 
should they occur.  Looping received data back onto the transmit path helps 
determine whether a connection is still valid.  Copper Loopback tests isolate 
problems on the copper run between an iMcV-T1/E1/J1-LineTerm module and the 
connected device, while Fiber Loopback tests can isolate problems on the fiber 
connected to the module. 

The following illustrations show a typical progression of Loopback tests (i.e., 
starting by checking the copper segment at the local side, then the fiber segment 
at the REMOTE side, etc). 

Содержание iMcV-E1

Страница 1: ...iMcV T1 E1 J1 LineTerm Operation Manual ...

Страница 2: ...nger To receive in warranty service the defective product must be received at IMC Networks no later than the end of the warranty period The product must be accompanied by proof of purchase satisfactory to IMC Networks denoting product serial number and purchase date a written description of the defect and a Return Merchandise Authorization RMA number issued by IMC Networks No products will be acce...

Страница 3: ...guration Instructions 1 Requirements 2 Managed Modules 3 Unmanaged Modules 4 DIP Switches 4 Features 6 LED Operation 9 Loopback Testing 10 Pseudorandom Bit Sequence PRBS Testing 11 Installation Troubleshooting 12 Specifications 14 IMC Networks Technical Support 14 Fiber Optic Cleaning Guidelines 15 Electrostatic Discharge Precautions 15 Safety Certifications 17 ...

Страница 4: ...he single strand version the HOST and REMOTE must be ordered with opposite transmit and receive wavelengths for proper operation Installating an iMcV T1 E1 J1 LineTerm The iMcV T1 E1 J1 LineTerm modules can be installed in any iMediaChassis series Each module requires one slot in the chassis To install a module remove the blank brackets covering the slots where the module is to be installed by rem...

Страница 5: ...s available before configuring the module This information includes Line Type T1 or E1 Line Coding used on T1 either AMI or B8ZS Distance of the copper run for DSX1 lines 655 feet MAX Required CSU line Buildout 0db to 22db Receiver BOOST for T1 and E1 applications Fiber transceivers must be for appropriate fiber run i e SM or MM Management location must be at HOST unit ...

Страница 6: ...stallation as the chassis may maintain an old setting from a previous installation for that slot location iView Management Software iView is the IMC Networks management software designed specifically for the IMC Networks iMcV family of modules It features a GUI and gives network managers the ability to monitor and control the manageable IMC Networks products iView is available in several versions ...

Страница 7: ...efault setting as a HOST REMOTE pair via DIP Switches Modules are shipped in the default setting as a HOST HOST S3 2 OFF REMOTE S3 2 ON DIP Switches The iMcV T1 E1 J1 LineTerm DIP Switches are located on S2 and S3 on the PCB The location of the S2 and S3 DIP Switches are displayed in the following diagram ...

Страница 8: ...DSX 1 0 to 133 ft 0 dB CSU default S2 4 OFF S2 5 ON S2 6 ON DSX 1 133 to 266 ft S2 4 ON S2 5 OFF S2 6 ON DSX 1 266 to 399 ft S2 4 OFF S2 5 OFF S2 6 ON DSX 1 399 to 533 ft S2 4 ON S2 5 ON S2 6 OFF DSX 1 533 to 655 ft S2 4 OFF S2 5 ON S2 6 OFF 7 5 dB CSU S2 4 ON S2 5 OFF S2 6 OFF 15 dB CSU S2 4 OFF S2 5 OFF S2 6 OFF 22 5 dB CSU Receive LIU Termination S2 7 ON S2 8 ON Receive Side Termination Disable...

Страница 9: ...es The iMcV T1 E1 J1 LineTerm module includes several features to facilitate maintenance and troubleshooting in any T1 E1 J1 based TDM environment Loopback Modes This feature allows three distinct Loopbacks to be activated either through DIP Switches or iView2 Management Fiber Loopback An analog Loopback at the copper port back to the fiber port It copies the received optical signal back to the op...

Страница 10: ...e administrator can quickly determine where a fiber fault is located from either end of the fiber line The AIS is transmitted as an unframed all ones pattern on the copper port The default loopback DIP Switch is disabled by default This feature can be controlled by SNMP Management software iView2 when the HOST iMcV T1 E1 J1 LineTerm module is installed in a managed chassis Transmit LIU Waveshape a...

Страница 11: ...r line The data rate selections available include the following T1 J1 1 544 Mbps 32 ppm E1 2 048 Mbps 32 ppm By default this feature is set to T1 This feature can be selected only by setting the DIP Switches manually Remote Unit A DIP Switch enables or disables the Remote Unit mode By default this feature is Disabled Remote Unit must be enabled on the REMOTE module This allows all SNMP configurabl...

Страница 12: ...copper port PRBS Glows green when the copper port receives a valid Pseudorandom Bit Sequence PRBS It is OFF when the port is not receiving a PRBS TEST Glows yellow when any Loopback mode is active Fiber Port LEDs ER Glows yellow when a fiber symbol error has been received LOS Glows red when a fiber link is not established and is in a LOS ALARM state RM Glows green on the Remote Unit when set to DS...

Страница 13: ...g on the looped data line Loopback testing is useful for troubleshooting problems with network connections should they occur Looping received data back onto the transmit path helps determine whether a connection is still valid Copper Loopback tests isolate problems on the copper run between an iMcV T1 E1 J1 LineTerm module and the connected device while Fiber Loopback tests can isolate problems on...

Страница 14: ... on Remote iMcV T1 E1 J1 LineTerm Host Remote Pseudorandom Bit Sequence PRBS Testing To test using PRBS configure the iMcV T1 E1 J1 LineTerm modules for No Loopback and then configure the Transmit Copper Data Source to PRBS Configure the local device for Loopback and start the test Verify the PRBS LED is ON indicating no errors are being received Central Office Customer iMcV T1 E1 J1 LineTerm iMcV...

Страница 15: ... is ON at both HOST and REMOTE To test a media converter by itself first verify that the fiber patch cable is appropriate then follow these steps to test 1 Connect the media converter to the RJ 48 device with a copper cable 2 Loop a single strand of fiber from the transmit port to the receive port of the media converter 3 Verify that there is a valid connection for both the RJ 48 and fiber ports o...

Страница 16: ...following table lists the pin configuration for the RJ 48 connector Pin Signal 1 Receive Ring 2 Receive Tip 3 No Connection 4 Transmit Ring 5 Transmit Tip 6 No Connection 7 No Connection 8 No Connection Pin 1 ...

Страница 17: ...on Typical 0 550 Amps 5 V Operating Temperature 32 F to 122 F 0 C to 50 C Storage Temperature 4 F to 158 F 20 C to 70 C Humidity 5 to 95 non condensing 0 to 10 000 ft altitude Dimensions Single Slot iMcV module IMC Networks Technical Support Tel 949 465 3000 or 800 624 1070 in the U S and Canada 32 16 550880 Europe Fax 949 465 3020 E Mail techsupport imcnetworks com Web www imcnetworks com ...

Страница 18: ...when reinstalled they do not introduce any contamination to the optics 4 If you suspect that the optics have been contaminated alternate between blasting with clean dry compressed air and flushing with methanol to remove particles of dirt Electrostatic Discharge Precautions Electrostatic discharge ESD can cause damage to any product add in modules or stand alone units containing electronic compone...

Страница 19: ...ber optic components are extremely susceptible to electrostatic discharge damage Do not handle these components directly unless you are a qualified service technician and use tools and techniques that conform to accepted industry practices ...

Страница 20: ...lar household waste It is the consumer s responsibility to dispose of this and all equipment so marked through designated collection facilities appointed by government or local authorities Following these steps through proper disposal and recycling will help prevent potential negative consequences to the environment and human health For more detailed information about proper disposal please contac...

Страница 21: ...nformation in this document is subject to change without notice IMC Networks assumes no responsibility for any errors that may appear in this document iMcV T1 E1 J1 LineTerm is a trademark of IMC Networks Other brands or product names may be trademarks and are the property of their respective companies Document Number 50 80103 00 A7 August 2012 ...

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