Transition Networks C4TEF10XX-10X User's Manual
Contents
1. The fiber optic transmitters on this device meets Class I Laser safety requirements per IEC 825 CDRH standards and complies with 21 CFR1040 10 and 21CFR1040 11 12 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 Cable Specifications Continued T1 E1 Cable Category 3 minimum requirement Connector RJ 48C Electrical network connection Single 4 wire Tip Ring Tip1 Ring1 Mechanical arrangement 8 position miniature modular jack Usage 1 544 Mb s access lines Interface codes 04DU9 any applicable Cable type Long Haul T1 E1 Odb 7 5dp 15db 22db Ed E1 3 0V 120 ohm Ji 0 655 110 ohm DSX 1 0 133 133 266 266 399 399 533 533 655 100 ohm ring R 1 gt 1 tip T 2 2 Transmit 3 3 dry contact A ring R1 4 4 R1 Receive tip T1 5 5 T1 6 6 dry contact B 7 7 Not Used 8 8 to the from the network media converter RS 232 Cable included Connectors 6 pin DIN and DB 9 Gauge 24 to 22 AWG Attenuation 20 dB 1000 ft 10 MHz Differential characteristic impedance 100 ohm 10 10 MHz Maximum cable distance lt 10 ft 3 2 m 56 kb s or higher Signal Ground 3 amp 5 e O 2 Receive Data Transmit Signal 1 O J oo 7 Request Data o Receive signal 2 3 Transmit Data Clear to send 9 G 5 Signal Ground DIN 6 Pin DB 9 techsupport transition com Click the Transition Now link fo2. 24 hours a day US and Canada 1 800 260 1312 International 00 1 952 941 7600 Transition Now Chat live via the Web with Transition Networks Technical Support Log onto www transition com and click the Transition Now link Web Based Seminars Transition Networks provides seminars via live web based training Log onto www transition com and click the Learning Center link E Mail Ask a question anytime by sending an e mail to our technical support staff techsupport transition com Address Transition Networks 6475 City West Parkway Minneapolis MN 55344 U S A telephone 952 941 7600 toll free 800 526 9267 fax 952 941 2322 TRANSITION Declaration of Conformity NETWORKSe Name of Mfg Transition Networks 6475 City West Parkway Minneapolis MN 55344 U S A Model S4TEF10xx 10x Series Media Converters Part Number s SATEF1011 100 S4TEF1013 100 S4TEF1014 100 SATEF1015 100 S4TEF101 6 100 S4TEF1017 100 SATEF1018 100 S4TEF1029 100 S4TEF1029 101 SATEF1029 102 S4TEF1029 103 Regulation EMC Directive 89 336 EEC Purpose To declare that the 4TEF10xx 10x to which this declaration refers is in conformity with the following standards EN 55022 1994 Class A FCC Part 15 Subpart B EN 55024 1998 A1 A13564 2002 21 CFR subpart J EN 61000 3 2 2001 EN 61000 4 2 4 3 4 4 and 4 6 I the undersigned hereby declare that the equipment specified above conforms to the above Directive s and Standard s Lergh Oe Aug
3. S4TEF1015 100 long haul Fiber optic Transmitter Power Fiber optic Receiver Sensitivity Link Budget S4TEF1016 100 extra long haul S4TEF1017 100 long wave length Fiber optic Transmitter Power Fiber optic Receiver Sensitivity Link Budget S4TEF1018 100 Fiber optic Transmitter Power Fiber optic Receiver Sensitivity Link Budget S4TEF1029 100 S4TEF1029 101 Fiber optic Transmitter Power Fiber optic Receiver Sensitivity Link Budget S4TEF1029 102 S4TEF1029 103 Fiber optic Transmitter Power Fiber optic Receiver Sensitivity Link Budget lt 10 9 9 um 62 5 125 um 100 140 85 140 50 125 um 1300 nm multimode min 19 0 dBm max 14 0 dBm min 30 0 dBm max 14 0 dBm 11 0 dB 1300 nm multimode min 19 0 dBm max 14 0 dBm min 30 0 dBm max 14 0 dBm 11 0 dB 1310 nm single mode min 15 0 dBm max 8 0 dBm min 31 0 dBm max 8 0 dBm 16 0 dB 1310 nm single mode min 8 0 dBm max 2 0 dBm min 34 0 dBm max 7 0 dBm 26 0 dB 1310 nm single mode 1550 nm single mode min 5 0 dBm max 0 0 dBm min 34 0 dBm max 7 0 dBm 29 0 dB 1300 nm multimode min 19 0 dBm max 14 0 dBm min 30 0 dBm max 14 0 dBm 11 0 dB 1310 nm TX 1550 nm RX simplex 1550 nm TX 1310 nm RX simplex min 13 0 dBm max 6 0 dBm min 32 0 dBm max 3 0 dBm 19 0 dB 1310 nm TX 1550 nm RX simplex 1550 nm TX 1310 nm RX simplex min 8 0 dBm max 3 0 dBm min 33 0 dBm max 3 0 dBm 25 0 dB
4. SNMP section page 11 for the commands that are supported via the RS 232 connector Enable Loop Back on T1 E1 port 4 Enable Disable Data port mode Local management mode 4 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 Installation Continued Switch Set 2 Serial Options 1 2 3 Serial Connection Speed Line Settings Switches 1 2 and 3 on switch set 2 are used to set the serial connection speed 123 12 3 1200 baud 19200 baud 2400 baud 38400 baud 4800 baud 57600 baud 9600 baud 4 Enable Disable Parity When parity is enabled an additional bit is added to the 8 bit signal to identify whether the signal is sent successfully Use switch 5 to send odd or even signal parity up Disable parity down Enable parity 5 Parity Select up Select odd serial parity down Select even serial parity This switch is inactive if switch 4 is up 115200 baud Disable Parity i il dow Enable Parity Odd Serial Parity Ie Even Serial Parity techsupport transition com Click the Transition Now link for a live Web chat 5 S4TEF1 Oxx 10x Installation Continued Hardware Software Jumper Installation Continued Switch Set 2 Serial Options 6
5. T1 E1 link has a pair of LEDs embedded in the RJ 48 connector that monitor the status of the link LNK LED green On T1 E1 link detected AIS LED amber On AIS Alarm Indication Signal detected Failure of the device connected to the T1 E1 port an eaae _ K AIS LNK AIS LNK AIS LNK As T1 E1 LEDs 4 fiber LEDs Fiber Network LEDs Use the status LEDs next to the fiber port to monitor the media converter and the fiber network connections LKF fiber link On Fiber link connection Flashing Fiber network activity PWR power On Connection to external AC or DC power Operation Continued Remote Management Function The S4TEF10xx 10x can be remotely managed when connected via fiber cable to a local C4TEF10xx 10x slide in module media converter that is installed in a managed Transition Networks PointSystem chassis The SNMP section below lists the commands that can be used to monitor and manage a networked S4TEF10xx 10x media converter at a remote location For more details see the C4TEF10xx 10x user s guide on line at www transition com SNMP See the on line documentation that comes with Transition Networks FocalPoint software for applicable commands and usage Use SNMP at an attached terminal or at a remote location to monitor the media converter by monitoring e Media converter power e Fiber link status e Copper link status for each T1 E1 AIS lin
6. error test e Verify the remote T1 E1 connection at the local converter by starting a remote loop back at the local converter SW mode enter the remote T1 E1 loop back command at the local converter HW mode is not available e Use a bit error test unit to run a bit error test gt X a Local Remote Converter Converter Bit Error Test Equipment Equipment e Contact Tech Support 1 800 260 1312 Int l 00 1 952 941 7600 Verify the remote T1 E1 connection at the remote converter by starting a remote loop back at the remote converter NO SW mode enter the remote T1 E1 loop back command at the remote e Contact Tech Support 1 800 260 1312 Int l 00 1 952 941 7600 converter HW mode is not available f se a bit error test unit to run a bit error test Bit Error Tesi Equipment Verify the local T1 E1 connection at the remote converter by starting a local loop back at the remote converter HW mode set the remote converter to T1 E1 loop back see page 4 SW mode enter the local T1 E1 loop back command at the remote converter e Use a bit error test unit to run a bit error test gt X Local Remote Converter Converter 16 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 techsupport transition com Click the Transition Now link for a live Web chat 17 S4TEF1 0Oxx 10x Contact Us Technical Support Technical support is available
7. not in use 7 not in use ee ee OD KKAL 8 not in use switches 6 7 8 amp 9 are not in use 9 not in use 10 Fiber Loop Back up Disabled fiber loop back down Enabled fiber loop back The loop back setting is used for installation and network debugging procedures When the fiber loop back function is enabled the fiber port loops all T1 E1 signals from the receive ports back to the transmit ports The loop back test scenarios are described in detail on page 17 Disables Loop Back Enables Loop Back 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 The hardware software jumper is inside the media converter housing and is located near the back end of the upper circuit board f e T Hardware The media converter mode is determined by e the switch settings see pages 3 6 Software Mode Software The media converter mode is determined by the most recently saved on board 09 microprocessor settings Hardware Mode To set the jumper 1 Using a small screwdriver remove the four 4 screws that secure the cover and carefully remove the cover from the media converter 2 Locate the hardware software jumper Using small needle nosed pliers or similar device move the jumper to the desired position see above 4 Carefully replace the cover on the media converter and replace the four 4 screws that secure the cover
8. ports T1 E1 ports LNK AIS LNK AIS LNK AIS LNK TX 100Base FX fiber port RS 232 port NOTE An RS 232 cable with a 6 pin DIN connector and a DB 9 connector is included with the S4TEF10xx 10x media converter Installation Continued Configuration Switches The S4TEF10xx 10x media converter has two 2 sets of configuration switches e Set 1 sets the T1 E1 options e Set 2 sets the serial options Switch Set 1 upper T1 E1 Options Switch Set 2 lower Serial Options Use a flat blade screwdriver to set the switches as shown Key H Al up down Switch Set 1 T1 E1 Options 1 2 3 4 Line Settings Switches 1 2 3 and 4 are used to setup the line settings for the T1 E1 ports The selected setting applies to all four 4 T1 E1 channels 1234 1234 ggg BARU DSX 1 100 ohm 0 133 ft 0 40 5 m DST 100 ohm 0 JB LBO HAE BARAA DSX 1 100 ohm 133 266 ft 40 5 81 m DST 100 ohm 7 5 dB LBO HUE AUD DSX 1 100 ohin 266 399 fi 81 122 m DST 100 ohm 15 dB LBO BAA AOE DSX 1 100 ohm 399 533 fE 122 162 m DST 100 ohm 22 5 dB BO AGG ARAA DSX 1 100 ohm 533 655 ft 162 200 m E1 120 ohm J1 110 ahia 0 655 ft 0 200 a 2 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 techsupport transition com Cli
9. 0 1 952 941 7600 YES e Proceed to step 4 4 Is the AIS LED on a T1 E1 port with a copper cable installed illuminated YES e The device connected to the T1 E1 port has failed Correct the device failure e Contact Tech Support 1 800 260 1312 Int l 0O 1 952 941 7600 NO e Proceed to step 5 techsupport transition com Click the Transition Now link for a live Web chat 15 S4TEF1 Oxx 10x Troubleshooting Continued Troubleshooting Continued 5 Is data transfer failing on one of the T1 E1 ports 6 Is data transfer failing on the fiber port YES YES e Verify the local T1 E1 connection at the local converter by starting a local loop back at the local converter HW mode set the local converter to T1 E1 loop back see page 4 SW mode enter the local T1 E1 loop back command at the local converter e Use a bit error test unit to run a bit error test e Verify the local fiber connection by starting a remote fiber loop back HW mode set the remote converter to fiber loop back see page 7 SW mode enter the remote fiber loop back command e Use a bit error test unit to run a bit error test Local Remote Converter Converter a Converter A e Verify the remote fiber connection by starting a local fiber loop back HW mode set the local converter to fiber loop back see page 7 SW mode enter the remote fiber loop back command e Use a bit error test unit to run a bit
10. ans TRANSITION User s Guide S4TEF10xx 10x Stand Alone Media Converter e RS 232 to Fiber e 4 T1 E1 to Fiber The S4TEF10xx 10x media converter can extend signals from an RS 232 data port and up to four 4 T1 E1 network ports over fiber The RS 232 and T1 E1 interfaces are independent of each other and the signals from these ports can be sent over the fiber interface simultaneously The S4TEF10xx 10x is designed to be installed in pairs For example install one S4TEF1011 100 as the local media converter and another S4TEF1011 100 as the remote media converter All S4TEF10xx 10x models have the following copper connectors Connector Type Number Description RS 232 one 1 6 pin DIN serial 3 2 m 10 ft T1 E1 four 4 RJ 48 The various fiber connectors are available on separate models Both duplex and single mode fiber optic converters are available Part Number Duplex Fiber Optic 700Base FX S4TEF1011 100 ST 1300 nm multimode 2 km 1 2 miles S4TEF1013 100 SC 1300 nm multimode 2 km 1 2 miles S4TEF1014 100 SC 1310 nm single mode 20 km 12 4 miles S4TEF1015 100 SC 1310 nm single mode 40 km 24 8 miles S4TEF1016 100 SC 1310 nm single mode 60 km 37 2 miles S4TEF1017 100 SC 1550 nm single mode 80 km 49 7 miles S4TEF1018 100 MT RJ 1300 nm multimode 2 km 1 2 miles S4TEF1029 10x single mode single fiber models are listed on page 2 Typical maximum cable distance Actual dista
11. ck the Transition Now link for a live Web chat 3 S4TEF1 Oxx 10x Installation Continued Switch Set 1 T1 E1 Options 5 6 7 8 Loop Back Settings The loop back setting is used for installation and network debugging procedures Each of the T1 E1 ports can be individually set for loop back mode e Switch 5 controls T1 E1 port 1 e Switch 6 e Switch 7 controls T1 E1 port 3 e Switch 8 controls T1 E1 port 2 controls T1 E1 port 4 When the loop back switch for a particular T1 E1 port is enabled the port loops the signal from the receive port back to the transmit port The loop back test scenarios are described in detail on page 16 5 H Disable Loop Back on T1 E1 port 1 Disable Loop Back on T1 E1 port 2 Enable Loop Back on T1 E1 port Enable Loop Back on T1 E1 port 2 w H A down P Disable Loop Back on T1 E1 port 3 Disable Loop Back on T1 E 1 port down Fl Enable Loop Back on T1 E1 port 3 9 Transmit AIS up Enables the transmit AIS Alarm Indication Signal on loss of the carrier signal This function is un framed and applies to ALL channels both copper and fiber down Disables the transmit AIS function 10 RS 232 Port Mode up Data port mode normal operation Transmits data to a desk top computer or other data collection device down Local auxiliary management mode See the
12. dequate measures Achtung Dieses ist ein Ger t der Funkst rgrenzwertklasse A In Wohnbereichen k nnen bei Betrieb dieses Ger tes Rundfunkst rungen auftreten in diesem Fall ist der Benutzer f r Gegenma nahmen verantwortlich Attention Ceci est un produit de Classe A Dans un environment domestique ce produit risque de cr er des interf rences radio lectriques il appartiendra alors l utilsateur de prende les measures sp cifiques appropri es In accordance with European Union Directive 2002 96 EC of the European Parliament and of the Council of 27 January 2003 Transition Networks will accept post usage returns of this product for proper disposal The contact information for this activity can be found in the Contact Us portion of this E document VCCI Class 1 Compliance This equipment is in the 1st Class category information equipment to be used in commercial and or industrial areas and conforms to the standards set by the Voluntary Control Council For Interference by Data Processing A A Equipment and Electronic Office CORBI B BRRRE GIRERCS TRM NO ERNE Machines aimed at preventing radio tT HHACORAREH EAB LAMSMERESZAREB interference in commercial and or ais g industrial areas When used in a HABAS VCC 1 SHRBSLTED ES residential area or in an adjacent area T GEMREMTORELATRRT 3 24 FUE thereto interference may be caused to Ya PERSKEEREENL BCLABD ET radio and TV receivers etc Read the instructions for cor
13. er cables to the remote S4TEF10xx 10x media converter as described Dry Contact Relay e Connect the male TX cable connector to the female RX port All four T1 E1 ports are equipped with an T1 E1 port e Connect the male RX cable connector to the female TX port RJ 48 dry contact relay The relay closes if 3 _RI 48C connector the power is lost or if any of the individual relay S N gm T1 E1 E1 links are lost The operational rating on pins 3 and 6 are 0 30 VDC 100 mA maximum Connect the fiber cable to the remote media converter as shown Connect the fiber cable to the local media converter as shown oa Install the RS 232 Data Cable included 1 Use the enclosed RS 232 data cable with a male DIN 6 pin connector on one end and a DB 9 connector installed on the other end 2 Connect the DIN 6 pin connector to the RS 232 port on the S4TEF1Oxx 10x media converter 3 Connect the DB 9 connector at the other end of the cable to the RS 232 port on a computer or other device that is used to collect and display data Connect the 6 pin DIN connector to the media converter as shown Connect the DB 9 connector to the computer RS 232 data cable enclosed 8 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 techsupport transition com Click the Transition Now link for a live Web chat 9 S4TEF1 Oxx 10x Operation T1 E1 LEDs Each
14. k e RS 232 status speed bits parity stop e AIS detected on fiber link e All hardware switch settings e Model serial PIC revision HW revision group string connectors Also use SNMP to enter network commands that e Local and remote fiber loop back e Local and remote T1 E1 loop back for each channel e T1 E1 line options DS1 DSX 1 J1 D1 AIS e RS 232 settings speed bits parity stop e 11 E1 monitor modes and loop back modes e Boot load firmware local unit only The local auxiliary factory maintenance interface via the RS 232 connector supports e Switch selection for the RS 232 interface e Access to all local and remote status information e Perform all local and remote commands e Operate at selected baud rates 10 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 techsupport transition com Click the Transition Now link for a live Web chat 11 S4TEF1 Oxx 10x Cable Specifications The physical characteristics must meet or exceed ITU specifications Fiber Cable Bit Error Rate Single mode fiber recommended Multimode fiber recommended Multimode fiber optional S4TEF1011 100 Fiber Optic Transmitter Power Fiber Optic Receiver Sensitivity Link Budget S4TEF1013 100 Fiber Optic Transmitter Power Fiber Optic Receiver Sensitivity Link Budget S4TEF1014 100 Fiber optic Transmitter Power Fiber optic Receiver Sensitivity Link Budget
15. nce is dependent upon the physical characteristics of the network The chassis version of the media Installation 0 2 converter is C4TEF10xx 10x For more Operation oaaao uiuo 10 information see the user s guide on line Cable Specifications 12 at www transition com Technical Specifications 14 Troubleshooting 15 Compliance Information 19 S4TEF1 Oxx 10x Part Number Fiber Optic single fiber single mode 100Base FX S4TEF1029 100 SC 1310 mn TX 1550 nm RX 20 km 12 4 miles S4TEF1029 101 SC 1550 mn TX 1310 nm RX 20 km 12 4 miles S4TEF1029 100 and S4TEF1029 101 are intended to be installed in the same link where one is the local converter and the other is the remote converter S4TEF1029 102 SC 1310 mn TX 1550 nm RX 40 km 24 8 miles S4TEF1029 103 SC 1550 mn TX 1310 nm RX 40 km 24 8 miles SATEF1029 102 and S4TEF1029 103 are intended to be installed in the same link where one is the local converter and the other is the remote converter Typical maximum cable distance Actual distance is dependent upon the physical characteristics of the network TX transmit RX receive Installation Due to proprietary communication over fiber the S4TEF media converter must be installed in pairs Copper and Fiber Ports The figure below illustrates the locations of the fiber port the RS 232 data port and the four 4 T1 E1
16. r a live Web chat 13 S4TEF1 Oxx 10x Technical Specifications For use with Transition Networks Model S4TEF10xx 10x or equivalent Standards G 703 AMI B8Zs HDB3 Data Rate Fiber 100 Mb s Dimensions 3 7 x 4 7 x 1 8 93 mm x 120 mm x 47 mm Weight 1 Ib 0 45 kg approximate Power Consumption 6 0 watts Power Supply 12 VDC 0 8 Amp North Am EU Latin Am Japan 12 VDC 1 25 Amp UK Australia N Z South Africa The external power supply provided with this product is UL listed by the power supplier s manufacturer Environment Tmra O to 50 C 32 to 122 F Storage Temperature 40 to 85 C 40 to 185 F Humidity 5 to 95 non condensing Altitude to 10 000 feet Warranty Lifetime Manufacturer s rated ambient temperature The information contained in this user s guide is subject to change For the most up to date information on the S4TEF10xx 10x media converter see the user s guide on line at www transition com Product is certified by the manufacturer to comply with DHHS Rule 21 CFR Subchapter J applicable at the date of manufacture CAUTION Visible and invisible laser radiation when open Do not stare into beam or view directly with optical instruments CAUTION Use of controls adjustments or the performance of procedures other than those specified herein may result in hazardous radiation exposure Optional Accessories The following items are available from Transition Networks Part N
17. rect handling BERAE o TELURD RHEL THE 18 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 techsupport transition com Click the Transition Now link for a live Web chat 19 Trademark Notice All trademarks and registered trademarks are the property of their respective owners Copyright Restrictions 2005 Transition Networks All rights reserved No part of this work may be reproduced or used in any form or by any means graphic electronic or mechanical without written permission from Transition Networks Printed in the U S A 33307 C
18. to the media converter hardware software jumper Power the Media Converter 1 Connect the barrel connector on the power adapter to the media converter s power port located on the back of the media converter 2 Connect the power adapter plug to AC power Verify that the media converter is powered by observing the illuminated LED power indicator light NOTE For DC power consult the user s guide for the Transition Networks SPS1872 xx DC external power supply techsupport transition com Click the Transition Now link for a live Web chat 7 S4TEF1 Oxx 10x Installation Continued Install the Fiber Cable Installation Continued Install the T1 E1 Cable 1 Locate or build ITU compliant copper cable with straight through RJ 48 connectors installed at both ends See page 13 for the proper cable specifications for your network application 1 Locate or build ITU compliant 100Base FX fiber cable with male two stranded TX to RX connectors installed at both ends 2 Connect the fiber cables to the local S4TEF10xx 10x media converter as 2 Connect the RJ 48 connector at one end of the cable to one of the T1 E1 described ports on the S4TEF10xx 10x media converter e Connect the male TX cable connector to the female TX port 3 Connect the RJ 48 connector at the other end of the cable to the T1 E1 e Connect the male RX cable connector to the female RX port port on the other device 3 Connect the fib
19. umber Description SPS 1872 SA Optional External Power Supply 18 72VDC Stand Alone Output 12 6VDC 1 0A WMBL Optional Wall Mount Bracket 4 0 in 102 mm WMBV Optional Vertical Mount Bracket 5 0 in 127 mm WMBD Optional DIN Rail Mount Bracket 5 0 in 127 mm 14 24 Hour Technical Support 1 800 260 1312 International 00 1 952 941 7600 Troubleshooting If the media converter fails isolate and correct the failure by determining the answers to the following questions and then taking the indicated action 1 Is the PWR LED illuminated NO e Ensure that the power adapter is the proper type of voltage and cycle frequency for the outlet See Power Supply on page 14 e Ensure the power adapter is properly installed in the media converter and in the grounded outlet e Contact Tech Support 1 800 260 1312 Int l 0O0 1 952 941 7600 YES e Proceed to step 2 2 Is the LKF LED illuminated NO e Check the fiber cables for proper connection e Verify that the TX and RX cables on the local media converter are connected to the RX and TX ports respectively on the remote media converter e Contact Tech Support 1 800 260 1312 Int l 00 1 952 941 7600 YES e Proceed to step 3 3 Is the LNK LED on a T1 E1port with a copper cable installed illuminated NO e Check the copper cable connected to that T1 E1 port for proper connection e Contact Tech Support 1 800 260 1312 Int l 0
20. ust 2007 Stephen Anderson Vice President of Engineering Date Compliance Information CISPR22 EN55022 Class A EN55024 CE Mark FCC Regulations This equipment has been tested and found to comply with the limits 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 the instruction manual 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 the user s own expense Canadian Regulations This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus set out on the radio interference regulations of the Canadian Department of Communications Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la Class A prescrites dans le R glement sur le brouillage radio lectrique dict par le minist re des Communications du Canada European Regulations 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 a
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