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CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX (outside 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: [email protected]

SEPTEMBER 2002

MT618A-ST-R2
MT619A-ST-R2

T3 Fiber Optic Line Driver

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Содержание MT618A-ST-R2

Страница 1: ...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 co...

Страница 2: ...is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever m...

Страница 3: ...l aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en...

Страница 4: ...r una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado deb...

Страница 5: ...NE DRIVER TRADEMARKS USED IN THIS MANUAL ST is a registered trademark of American Telephone and Telegraph Company Any other trademarks mentioned in this manual are acknowledged to be the property of t...

Страница 6: ...nd Prerequisites 14 3 2 What the Package Includes 14 3 3 Installation 14 3 3 1 Setting the Internal Jumpers 15 3 3 2 Connecting the Interfaces 19 3 3 3 Connecting the Power 20 4 Operation 21 4 1 Front...

Страница 7: ...escription Values Factory Setting JP2 Controls the AIS On AIS is On transmission to the transmitted electrical or optical Off AIS is interface when a minor not transmitted alarm is detected SELECTING...

Страница 8: ...rst to the modem then to the mains supply Operation starts when the power is applied to the rear panel power connector Operation 1 Check that the TEST switch is set to the NORM position 2 Verify LED s...

Страница 9: ...cal loopback LLB activated via front panel slide switch Remote loopback RLB activated via front panel slide switch AIS Signaling Frequency of 25 ppm is sent to the electrical interface at the local un...

Страница 10: ...input is below G 703 ELECTRICAL AIS T3 electrical interface received All 1s string OPTICAL ERR Bit error rate of the signal received from the optical interface is 10 6 or worse OPTICAL AIS Fiberoptic...

Страница 11: ...uit electrical interface on BNC connectors with 75 impedance to recover data and clock from the signal Diagnostic and alarm features include LED status indicators V 54 loopback activated from the fron...

Страница 12: ...ted information Protection from sparks and lightning Secure link in hazardous or hostile environment Table 2 1 Fiberoptic interface options Wave Fiber Type Transmitter Typical Receiver Maximum length...

Страница 13: ...t panel features LEDs that display T3 electrical and fiberoptic interface status The front panel also includes a POWER LED and a TEST slide switch for local and remote loopback activation For details...

Страница 14: ...nal and amplified to the required level 2 3 2 DATA CLOCK RECOVERY To recover data and clock from the signal a Phase Locked Loop PLL circuit is used The line driver provides internal selection for the...

Страница 15: ...rear of the unit for interface cable connections The ambient operating temperature of the line driver should be 32 to 113 F 0 to 45 C at a relative humidity of up to 90 noncondensing 3 2 What the Pack...

Страница 16: ...able length The fiberoptic interface board provides connection to the fiberoptic cable The fiberoptic board does not contain any jumpers or switches Opening the case To reach the line driver s interna...

Страница 17: ...the internal components Before moving jumpers touch the line driver s frame To open the line driver s case unscrew the two rear panel screws and slide out the line driver s printed circuit board Sett...

Страница 18: ...17 CHAPTER 3 Installation and Setup Figure 3 1 Main board layout T3 Interface Board...

Страница 19: ...detected Setting the T3 interface board jumpers The line driver s T3 interface board features jumpers JP1 JP3 that are used for selecting the T3 cable length See Figure 3 2 and Table 3 2 Figure 3 2 T3...

Страница 20: ...he main board to the case 3 3 2 CONNECTING THE INTERFACES Figure 3 3 shows the line driver s rear panel Figure 3 3 Rear panel Connecting the T3 interface The line driver s T3 interface is terminated i...

Страница 21: ...n extension cord power cable make sure it is grounded as well Any interruption of the protective grounding conductor inside or outside the instrument or disconnecting of the protective earth terminal...

Страница 22: ...le 4 1 Indicator functions Name Type Function 1 Power Green LED On Line driver is powered up 2 Loc Yellow LED On A local loopback is active 3 REM Yellow LED On A remote loopback is active A Test Slide...

Страница 23: ...The POWER LED turns On and remains lit as long as the line driver is connected to the mains 4 2 2 NORMAL OPERATING INSTRUCTIONS 1 Check that the TEST switch is set to the NORM position 2 Verify LED st...

Страница 24: ...r rate at the fiberoptic interface is 10 6 or worse Minor alarms occur when an Alarm Indication Signal AIS is received at the T3 electrical or fiberoptic interfaces The dry contact port operates as No...

Страница 25: ...back slide the TEST switch to the LOC position The LOC indicator turns On and remains lit as long as the local loopback is active 5 2 2 REMOTE LOOPBACK RLB Remote loopback tests the performance of the...

Страница 26: ...tive Measures in the order given in the table until the problem is corrected If the problem is still not resolved call Technical Support as described in Section 5 4 Table 5 1 Troubleshooting chart Tro...

Страница 27: ...trical levels JP2 is set incorrectly Check the JP2 settings see Table 3 1 ELECTRICAL AIS Attached equipment Check the equipment attached to indicator is On transmits All 1s the T3 electrical interface...

Страница 28: ...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 du...

Страница 29: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2002 Black Box Corporation All rights reserved...

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