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3174/3274 I-MUX

4

User Channels — 

32

Speed —  

2.3587 Mbps

Data Format —

3174/3274

Maximum Distance —  

Fiberoptic:  1.9 miles (3 km); Copper:  Coax:  0.9 miles (1.5 km), 
Type 1:  0.7 miles (1.2 km)

Indicators—

MX330A-C: (5) LEDs: Power, F/O TX, F/O RX, (1) DATA on the 
Link side, (1) DATA on the Controller Side

MX330A-D: (7) LEDs: Power, F/O TX, F/O RX, (1) ERR and (1) DATA 
on the Link side; (1) ERR and (1) DATA on the Mux port

Connectors — 

Channel: DPC, female
Composite: Copper, DPC female; Optical, ST

®

Power — 

105 to 250 VAC, 20 W max, 47 to 63 Hz

Size — 

1.7"H x 19"W x 5.7"D (4.4 x 48.3 x 14.4 cm)

Weight —

4.2 lb. (1.9 kg)

1. Specifications

Summary of Contents for 3174/3274 I-Mux Series

Page 1: ...ation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com CUSTOMER SUPPORT INFORMATION FEBRUARY 1993 MX330A C MX330A D 3174 3274 I Mux POWER TX RX TX RX ERR DATA ERR DATA ERR DATA DATA ERR ERR DATA FIBER OPTIC COPPER LINK MUX PORT 3174 3274 I MUX 0 1 2 3 POWER TX RX TX RX DATA DATA DATA DATA DATA FIBER OPTIC COPPER LINK CONTROLLER PORT 3174 3274 I MUX 0 1 2 3 ...

Page 2: ...RKS 1 TRADEMARKS ST is a registered trademark of AT T IBM is a registered trademark of IBM Corporation Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners ...

Page 3: ...perated 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 measures may be required to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This dig...

Page 4: ...tic Connection Configuration 1 Only 11 3 3 Copper Connection 11 3 3 1 Copper Connection for Configuration 1 11 3 3 2 Copper Connection for Configuration 2 11 3 4 Slide Switch Setting 11 3 5 Connecting to a Power Source 12 4 OPERATION 13 5 TROUBLESHOOTING 17 5 1 Configuration 1 17 5 1 1 General Malfunctions 17 5 1 2 Fiberoptic and Copper Connection Between the MX330A C and MX330A D 17 5 1 3 Fiberop...

Page 5: ...330A C 5 LEDs Power F O TX F O RX 1 DATA on the Link side 1 DATA on the Controller Side MX330A D 7 LEDs Power F O TX F O RX 1 ERR and 1 DATA on the Link side 1 ERR and 1 DATA on the Mux port Connectors Channel DPC female Composite Copper DPC female Optical ST Power 105 to 250 VAC 20 W max 47 to 63 Hz Size 1 7 H x 19 W x 5 7 D 4 4 x 48 3 x 14 4 cm Weight 4 2 lb 1 9 kg 1 Specifications ...

Page 6: ...Side Mux MX330A C The Device Side Mux works in conjunction with the Controller Side Mux It receives a single multiplexed output on fiberoptic coax or twisted pair cable and provides one to four demultiplexing to recover up to four IBM 3174 or 3274 multiplexed lines carrying a total of up to 32 terminal signals Figure 2 2 shows the Device Side Mux 2 Introduction POWER TX RX TX RX DATA DATA DATA DAT...

Page 7: ...hen different cable types are used coax 93 ohm or Type 1 2 6 or 9 150 ohm No operator intervention is required during normal operation The LEDs on the front panel provide diagnostic indications for each port 2 3 Applications The Contrller Side Mux MX330A C can be used in two basic configurations The Device Side Mux MX330A D can be used only in conjunction with the MX330A C Configuration 1 In this ...

Page 8: ... MX330A C 3174 Controller or 3274 with RPQ 9901 MX330A D Copper F O 0 7 8 15 16 23 24 31 0 7 8 15 16 23 24 31 0 1 7 0 1 7 8 Port Multiplexer 8 Port Multiplexer Figure 2 3 Configuration 1 Using the MX330A C and MX330A D 7 5 km ...

Page 9: ...le multiplexed output on coax or twisted pair cable This output is received by the IBM 3299 32 which provides 1 to 32 demultiplexing Each port is connected to a device This configuration allows a maximum total distance between controller and device of about 2 8 miles 4 5 km see Figure 2 4 NOTE Maximum distance is subject to controller timeout For maximum distance calculations refer Section 2 4 2 M...

Page 10: ...ropagation 2 When Controller Timeout 3174 50 µsec 3274 56 µsec Data Rate 424 nsec bit Tc Controller Delay Time 3174 3 5µsec 8 bit start sequence 3274 24µsec 24 bit 32 bit data stream T1 MX330A C Delay time 8 bit inbound 8 bit outbound 6 78 µsec T2 MX330A D Delay time 16 bit inbound 8 bit outbound 10 1 µsec T3 Multiplexor Delay time 16 bit inbound 8 bit outbound 10 1 µsec Terminal Delay IBM max 5 5...

Page 11: ...nsec bit Tc Controller Delay Time 3174 3 5µsec 8 bit start sequence 3274 24µsec 24 bit 32 bit data stream T1 MX330A C Delay time 8 bit inbound 16 bit outbound 6 78µsec T2 MX330A D Delay time 19 bit inbound 13 bit outbound 13 56 µsec Terminal Delay IBM max 5 5 µsec Signal Propagation 200 m µsec Applications using cable exceeding the maximum calculated length require changing the controller timeout ...

Page 12: ...ith a naked eye Covers must be kept on any fiberoptic ports that are not used CAUTION For all fiberoptic connections use only the ST connectors supplied with the units The use of other connectors may damage the LEDs NOTE Fiberoptic connector pairs between the units must be connected crosswise TX to RX or RX to TX 3 3 Copper Connection NOTE The maximum drive distance for copper cable is 1 5 km on c...

Page 13: ...propriate power plug to the three power cable wires Connect the brown wire to the live terminal Connect the blue wire to the Neutral terminal Connect the green yellow wire to the Ground terminal Connect the unit to the power source Turn the power switch on the unit s rear panel to ON Make sure the POWER LED lights If the POWER LED does not light go to Chapter 5 ...

Page 14: ...X330A C is shown in Figure 4 1 and the functions of the front panel components are explained in Table 4 1 The front panel of the MX330A D is shown in Figure 4 2 and the functions of the front panel components are explained in Table 4 2 The rear panels of the units are identical as shown in Figure 4 3 The functions of the rear panel components are explained in Table 4 3 4 Operation ...

Page 15: ...annel 3 F O RX LED Green Lights during data reception through the fiberoptic channel 4 F O TX Connector Fiberoptic transmission connector 5 F O RX Connector Fiberoptic reception connector 6 COPPER Connector Female DPC output to MX336A C or IBM 3299 32 7 DATA Indicator Lights during data transmission through the copper channel CONTROLLER PORT 8 Controller Port Female DPC input from 3174 or 3274 wit...

Page 16: ... reception through the fiberoptic channel 4 F O TX Connector Fiberoptic transmission connector 5 F O RX Connector Fiberoptic reception connector 6 COPPER Connector Female DPC output to MX336A C or IBM 3299 32 7 ERR Indicator Lights when there is a parity error in link input data 8 DATA Indicator Lights during data transmission through the copper channel MUX PORT 9 DPC Connector DPC connection to f...

Page 17: ...ER DESCRIPTION FUNCTION 1 Fuse 0 5A SloBlo Overload protection 2 Power Socket Connection to AC power source 3 POWER Switch Turns power on off I ON O OFF 4 COPPER FIBER Selects Fiberoptic or Copper coaxial twisted pair Slide Switch mode The switch is slightly recessed to prevent accidental switching ...

Page 18: ...MX330A C Be sure that at least one terminal connected to each terminal multiplexor is on line and active 5 1 2 FIBEROPTIC AND COPPER CONNECTION BETWEEN THE MX330A C AND MX330A D NOTE The slide switches on both units must be in the same position according to the operating mode F O or COPPER The slide switch is set to F O but the F O TX LED is off Replace the MX330A C unit The F O TX LED is on and t...

Page 19: ...inal connected to each terminal multiplexor is on line and active 5 2 Configuration 2 In this configuration you connect copper cable between the MX330A C and the IBM 3299 32 NOTE If you change the position of a slide switch or disconnect and then reconnect a cable during operation an abnormal indication results Make sure that at least one terminal connected to the IBM 3299 32 is on line and active...

Page 20: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1993 Black Box Corporation All rights reserved ...

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