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LOCAL MUX-6

TRADEMARKS

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Summary of Contents for Local Mux-6

Page 1: ...E 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 inf...

Page 2: ...mmercial 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 measures may be neces...

Page 3: ...to 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 las ins...

Page 4: ...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 debe...

Page 5: ...6 LOCAL MUX 6 TRADEMARKS All applied for and registered trademarks are the property of their respective owners...

Page 6: ...lation 14 3 1 Site Preparation 14 3 2 Setup 14 3 3 Installation in 19 Racks 15 3 3 1 General 15 3 3 2 Installation of Unit 15 3 4 Electrical Installation 16 3 4 1 AC Power 16 3 4 2 Sub Channels 16 3 4...

Page 7: ...umber of Sub channels Up to twelve by attaching a channel doubler to each of the connectors Mode of Operation Full duplex 1 2 Main Channel Electrical Interface Transmission Line 4 wire unconditioned t...

Page 8: ...dicator Red On when synchronization is lost at local unit Remote Sync Loss Indicator Red On when synchronization is lost at remote unit LLB Switch When pressed unit is performing local loopback RLB Sw...

Page 9: ...full duplex data end to end When the unit is set for twelve channels each sub channel can be used for either data or control signal transmission according to the specific application For example six...

Page 10: ...t configurations where distances of up to several kilometers are involved A typical application is demonstrated in Figure 2 1 where a cluster of terminals is connected to a host computer through a sin...

Page 11: ...sters of terminals distributed in several locations Local Mux 6 units may be installed in a ring type configuration refer to Figure 2 2 At each site the unconnected channels must be bypassed by shorti...

Page 12: ...ber of on Each per Node Nodes Sites Sub Channel 19 2 kbps 25 00 2 9 6 kbps 12 50 3 4 8 kbps 6 250 4 2 4 kbps 3 125 8 1 2 kbps 1 5625 16 Figure 2 2 Typical Ring Installation 4 TERM 4 TERM 4 TERM T R 9...

Page 13: ...the circuit board For up to 6 channels with no control applications place the strap between the center pin and the one marked 6 For any other applications place the strap between the center pin and t...

Page 14: ...wo short brackets The brackets are fastened by means of screws to the side walls for the case as shown in Figure 3 2 The brackets are attached to the two side walls of the unit 1 To prepare the unit f...

Page 15: ...1A is required for 230V operation and a 0 2A fuse is required for 115V operation 3 4 2 SUB CHANNELS Six D type 25 pin female connectors on the rear panel enable connection to the unit Detailed informa...

Page 16: ...CHASSIS GND RX A RX B for connecting transmit and receive wires and the cable shield if available TX connectors at the local unit must be connected to RX connectors at the opposite unit Figure 3 3 Rea...

Page 17: ...Send A positive level to the Local Mux 6 when data transmission is desired 106 CB 5 13 Clear to Send A positive level from the Local Mux 6 if data transmission is possible 107 CC 6 21 Data Set Ready...

Page 18: ...18 25 23 1 2 3 4 5 6 8 15 17 20 24 7 1 2 3 4 5 6 8 15 17 20 24 7 Local Mux 6 Sub Channel Connector Channel Doubler Port A Port B Not used Signal Ground Not used Protective Ground Transmitted Data TD...

Page 19: ...or Channel Doubler Special Cable 1 Protective Ground Transmitted Data TD Received Data RD Request to Send RTS Clear to Send CTS Data Set Ready DSR Received Line Signal Detector Signal Ground Secondary...

Page 20: ...turning off the power Information on strapping A unit system test procedure for use by the operator and technician Installation procedures given in Chapter 3 must be completed and checked before oper...

Page 21: ...ote unit is performing a test 3 Local Sync Loss Red LED lights when synchronization is lost at the local unit 4 Remote Sync Loss Red LED lights when synchronization is lost at the remote unit Table 4...

Page 22: ...nstrument must be made inoperative and secured against any unintended operation Turning On the Power Apply AC power by connecting the AC power cord to an acceptable AC source If the power indicator li...

Page 23: ...og and digital receiver sections are checked The yellow TEST indicator on the remote unit should also be lit if the units are properly connected Remote Loopback Remote loopback loops back data from th...

Page 24: ...eck the fuse inside the AC receptacle on the rear panel and replace it with a new one c Replace unit The fault is probably in the unit s power supply circuits Red LOCAL SYNC LOSS is ON a Perform LLB Y...

Page 25: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1997 Black Box Corporation All rights reserved...

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