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Black Box IS200A-R2 Скачать руководство пользователя страница 16

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5. Troubleshooting

5.1 Calling Black Box

If you determine that your NTU-1 is malfunctioning, do not attempt to alter or
repair the unit. It contains no user-serviceable parts. Contact Black Box at 724-746-
5500.

Before you do, make a record of the history of the problem. We will be able to
provide more efficient and accurate assistance if you have a complete description,
including:

• the nature and duration of the problem.

• when the problem occurs.

• the components involved in the problem.

• any particular application that, when used, appears to create the problem or

make it worse.

5.2 Shipping and Packaging

If you need to transport or ship your NTU-1:

• Package it carefully. We recommend that you use the original container.

• If you are shipping the NTU-1 for repair, make sure you include everything

that came in the original package. Before you ship, contact Black Box to get a
Return Authorization (RA) number.

CHAPTER 5: Troubleshooting

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Содержание IS200A-R2

Страница 1: ...utside U S call 724 746 5500 FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com DECEMBER 2000 IS200A R2 NTU 1 ...

Страница 2: ...ged to try to correct the interference by one of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult an experienced radio TV technician for help Caution Changes or modifications not expressly approved by the party ...

Страница 3: ...eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación Todo otro servicio deberá ser referido a personal de servicio calificado 9 El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso La colocación ...

Страница 4: ...r una antena externa deberá ser localizada lejos de las lineas de energia 16 El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación 18 Servicio por personal calificado deberá ser provisto cuando A El cable de poder o ...

Страница 5: ...4 NTU 1 TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners ...

Страница 6: ...3 1 Preparing the Site 9 3 2 Wall Mounting 9 3 3 DIP Switch Options 10 3 4 ISDN and Terminal Hookup 12 3 5 Wallmount Transformer 12 3 6 Remote Power 12 3 7 Signal Power 12 3 8 Operation 12 3 9 LEDs 13 4 Connector Pinouts 14 4 1 NTU 1 to ISDN U Interface 14 4 2 NTU 1 to Terminal Endpoint Equipment 14 5 Troubleshooting 15 5 1 Calling Black Box 15 5 2 Shipping and Packaging 15 Appendix Wallmount Temp...

Страница 7: ...ft 5486 m U Interface Coding 2B1Q Operating Temperature 32 to 122 F 0 to 50 C Humidity Up to 95 noncondensing Power Consumption 5 watts maximum Wallmount Transformer Output 34 VAC Size 1 5 H x 6 3 W x 5 1 D 3 8 x 16 x 13 cm Weight 2 5 lb 1 1 kg with transformer ...

Страница 8: ...tting diodes LEDs show unit status The rear panel houses the power jack two jacks for either an S or T interface to the customer premise equipment one U jack for connection to the central office and one 4 position DIP switch for terminating resistor selection Power is supplied by the wall transformer which also provides power to the associated terminal devices via the S T jacks 2 2 What the Packag...

Страница 9: ... inversion interface coding Standard RJ 45 jacks on all interfaces Wall transformer and U interface cable included Automatic remote backup power pickup 2 3 1 ISDN FEATURES Loss of power notification Embedded operations channel 2B D loopback Integral metallic termination circuit sealing current Warm start activation Remote activated quiet mode and insertion loss tests in maintenance modes 2 3 2 COM...

Страница 10: ...he NTU 1 with connectors and cables exiting downward Make sure that the LEDs are visible during operation 3 2 Wall Mounting Using the template found on the last page of this manual mark the wall and insert three number 6 pan head type screws Allow the screw heads to protrude 1 10 After inserting all three screws position the NTU 1 in place by engaging the screw heads and sliding it to the right un...

Страница 11: ...tors in the circuit You can access the switch from the rear panel It is numbered and labeled see Figure 3 2 The NTU 1 is shipped with all positions switched ON S1 positions 2 and 3 are not used 100 ohms IN Up to 1 km Up to 1 km Point to Point Connection Passive Bus Connection 100 ohms IN 100 ohms OUT NTU 1 Terminal Eliminator Terminal Equipment Terminal Equipment NTU 1 NTU 1 100 ohms OUT on unit w...

Страница 12: ... the S T line also have terminating resistors that you must consider As a general rule the units at either end have the resistance in while add on nodes have the resistance out Table 3 1 shows the switch settings Table 3 1 DIP switch functions DIP Switch Transmit Resistor Receive Resistor Position OFF ON S1 1 100 ohms out 100 ohms in S1 4 OFF ON 100 100 ohms out ohms in Default setting NOTES ON Do...

Страница 13: ...d 120 VAC wall socket 3 6 Remote Power The NTU 1 can receive remote backup power over the U interface connector The input must be nominally 48 VDC and 5 watts minimum Both local and backup power is routed to the S T interface connectors to power the associated terminal equipment Pins 7 and 8 on the U interface provide remote power to both S T jacks and the NTU 1 NOTE Remote power must be provided ...

Страница 14: ... Loopback ON indicates that the ISDN switch has sent a 2B D loopback command to the NTU 1 SC Sealing Current ON indicates the presence of the metallic termination test voltage from the ISDN switch ACT Activity ON indicates that a link up between the terminal equipment and ISDN central office via the NTU 1 has been achieved and transmission can take place If a disruption occurs between the U interf...

Страница 15: ...ot used 4 Transmit to Receive from ISDN network 5 Transmit to Receive from ISDN network 6 Not used 7 Remote power source 8 Remote power source 4 2 NTU 1 to Terminal Endpoint Equipment The S T jacks connect the NTU 1 to the terminal equipment Either jack can be an S interface or a T interface Pin functions are shown in Table 4 2 Table 4 2 Pin functions for S T jacks Pin Function 1 Not used 2 Not us...

Страница 16: ...scription including the nature and duration of the problem when the problem occurs the components involved in the problem any particular application that when used appears to create the problem or make it worse 5 2 Shipping and Packaging If you need to transport or ship your NTU 1 Package it carefully We recommend that you use the original container If you are shipping the NTU 1 for repair make su...

Страница 17: ...16 NTU 1 Appendix Wallmount Template Use this template to mount the NTU 1 on the wall ...

Страница 18: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2000 Black Box Corporation All rights reserved ...

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