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MINIATURE LOCAL MUX-12

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor

.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del

tipo descrito en el instructivo de operación, o como se indique en el
aparato.

12. Precaución debe ser tomada de tal manera que la tierra fisica y la

polarización del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no

sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen
del aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, 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 el contacto ha sido dañado; u

B:

Objectos han caído o líquido ha sido derramado dentro del
aparato; o

C:

El aparato ha sido expuesto a la lluvia; o

D:

El aparato parece no operar normalmente o muestra un cambio en
su desempeño; o

E:

El aparato ha sido tirado o su cubierta ha sido dañada.

Содержание MX873A

Страница 1: ...77 877 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 15...

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: ...o lavabo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser mont...

Страница 4: ...los contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber...

Страница 5: ...4 MINIATURE LOCAL MUX 12 TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners...

Страница 6: ...1 1 Sub Channels 7 1 2 Main Channel 8 1 3 General 8 2 Introduction 10 2 1 General 10 2 2 Functional Description 10 2 3 Applications 11 3 Installation 14 3 1 General 14 3 2 Physical Installation 14 3...

Страница 7: ...20 4 2 Indicators 20 4 3 Operating Procedure 20 4 3 1 Powering On the Unit 20 4 3 2 Operation 21 4 3 3 Powering Off the Unit 21 4 4 Operational Field Strapping Changes 21 5 Diagnostics 22 5 1 Remote...

Страница 8: ...232 CCITT V 24 Connectors 12 RJ 45 female Number of Sub channels 12 Distortion See Table 1 1 User may select six sub channel operation for reduced distortion by internal strapping Table 1 1 Performan...

Страница 9: ...utput Format Balanced bipolar transformer isolated Output Level 6 V ptp on 100 ohms Input Resistance 110 ohms Connectors 1 RJ 45 female 1 3 General Indicators Power Local Sync Loss Remote Sync Loss Ta...

Страница 10: ...ATURE LOCAL MUX 12 Temperature 32 to 122 F 0 to 50 C Humidity Up to 95 noncondensing Power Consumption Input 110 VAC Output 200 mA 9 VDC Size 1 3 H x 4 5 W x 7 4 D 3 4 x 11 4 x 18 7 cm Weight 10 7 oz...

Страница 11: ...Description The Mux 12 has 12 sub channels that are connected by RJ 45 connectors accessible from the top panel The unit can be strapped for 6 or 12 sub channels according to the desired application...

Страница 12: ...rates Sub channel Distortion Distortion bit rate kbps 6 channel mode 12 channel mode 19 2 12 5 25 9 6 6 3 12 5 4 8 3 2 6 3 2 4 1 6 3 2 1 2 0 8 1 6 2 3 Applications The primary application of the Mux 1...

Страница 13: ...Mux 12 units may be installed in a ring type configuration as shown in Figure 2 2 At each site the unconnected channels must be bypassed by shorting TX pin to RX pin of the relevant sub channel s conn...

Страница 14: ...13 MINIATURE LOCAL MUX 12 Figure 2 2 Typical ring installation Host Terminals Terminals Miniature Local Mux 12 Miniature Local Mux 12 Miniature Local Mux 12...

Страница 15: ...o assure normal operation 3 2 Physical Installation The Mux 12 comes completely assembled and is designed to be secured to a bench or wall using screws 3 3 Site Preparation The Mux 12 is installed wit...

Страница 16: ...through the mounting brackets located at both sides of the unit 5 Connect 9 to 12 VDC from a wall mounted AC adapter into the DC jack of the Mux The POWER LED should be lit Other LEDs may be lit as we...

Страница 17: ...of 9 to 12 VDC capable of supplying at least 300 mA A miniature wall mount power supply can be used to provide the required power The power supply is connected to the Mux by a cable ending with a mini...

Страница 18: ...ar to Send Connected to RTS 107 CC 6 Data Set Ready A positive level from the Mux except when either a sync loss occurs or remote loopback is performed 109 CF 4 Receive Line A positive level Signal De...

Страница 19: ...18 MINIATURE LOCAL MUX 12 Figure 3 1 RJ 45 socket female external view 1 8...

Страница 20: ...19 MINIATURE LOCAL MUX 12 Figure 3 2 RJ 45 plug male clip at rear 1 8...

Страница 21: ...e Figure 4 1 Their functions are described in Table 4 1 Table 4 1 Indicator functions Indicator Function Power ON when unit is powered Test ON when remote Mux is performing a loopback Local Sync Loss...

Страница 22: ...ly unattended except when occasional monitoring of LED indicators is required 4 3 3 POWERING OFF THE UNIT To power off the Mux simply remove the power adapter from the AC source 4 4 Operational Field...

Страница 23: ...ngle port Mux s digital circuitry as well as both local and remote analog interfaces the main channel link and the Mux 12 s digital receiver section NOTE When either local or remote loopback test is p...

Страница 24: ...l front panel a Check that power is supplied to the unit indicators are off b Replace unit The fault is probably in the unit s power supply circuits Local SYNC LOSS and or a Check the main channel s c...

Страница 25: ...ch end of the Mux case 2 Each bracket has a pair of flanges that slide into the Mux case slots Figure A 1 Top view of mounting bracket 3 To attach the brackets hold the Mux case facing upward Slide th...

Страница 26: ...25 MINIATURE LOCAL MUX 12 Figure A 2 Before mounting the brackets Figure A 3 After mounting the brackets...

Страница 27: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1998 Black Box Corporation All rights reserved...

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