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16

CLASSWORK PLUS LINE MULTIPLIER

NOTE

All of the Line Multiplier’s unused branches  must have their DIP
switches set to that of a Virtual Branch (student station numbers that do
not exist in the system).

If your system consists of 16 student stations (8 student stations
connected to Branch #1 and 8 student stations connected to Branch #2),
then the DIP switches on Branch #3 and Branch #4 should be set to
17/18 and 19/20 consecutively.

Table 3-2 shows how to set the Student Number.

Table 3-2. Setting the Student Number.

Student No.

Switch Number
1

2

3

4

5

6

7

8

0

0

0

0

0

0

0

0

0

1

1

0

0

0

0

0

0

0

2

0

1

0

0

0

0

0

0

3

1

1

0

0

0

0

0

0

4

0

0

1

0

0

0

0

0

5

1

0

1

0

0

0

0

0

6

0

1

1

0

0

0

0

0

7

1

1

1

0

0

0

0

0

8

0

0

0

1

0

0

0

0

9

1

0

0

1

0

0

0

0

10

0

1

0

1

0

0

0

0

11

1

1

0

1

0

0

0

0

12

0

0

1

1

0

0

0

0

13

1

0

1

1

0

0

0

0

14

0

1

1

1

0

0

0

0

15

1

1

1

1

0

0

0

0

16

0

0

0

0

1

0

0

0

17

1

0

0

0

1

0

0

0

18

0

1

0

0

1

0

0

0

19

1

1

0

0

1

0

0

0

20

0

0

1

0

1

0

0

0

21

1

0

1

0

1

0

0

0

22

0

1

1

0

1

0

0

0

23

1

1

1

0

1

0

0

0

Summary of Contents for ClassWork Plus

Page 1: ...l 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 black...

Page 2: ...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 measur...

Page 3: ...El 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 e...

Page 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...

Page 5: ...4 CLASSWORK PLUS LINE MULTIPLIER TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners...

Page 6: ...cludes 8 3 Installation 9 3 1 Before Installing the Line Multiplier 9 3 2 Connecting the System 9 3 3 Connecting the Line Multiplier 11 3 4 Connecting Branch 1 12 3 5 Connecting Branch 2 12 3 6 Connec...

Page 7: ...to 100 kHz Vertical Up to 100 Output Video Gain Output R G B video signals 200 MHz 1 6 Vpp Sync TTL General Bandwidth 200 MHz Internal Jumpers Cancel keyboard Mouse driver Connectors Input 2 DB25 fema...

Page 8: ...s classroom with 30 students connected to one Line Multiplier In this example six Student Interface Units SIUs are connected directly to the Teacher Interface Unit TIU Student Number 6 is then connect...

Page 9: ...ur package should include the following items ClassWork Plus Line Multiplier 1 6 6 ft 2 m System cable 1 Power supply 110 VAC for AC817A 220 VAC for AC817AE 4 DB25 terminators This users manual If any...

Page 10: ...onnecting the System Figures 3 1 and 3 2 show the front and rear panels of the ClassWork Plus Line Multiplier Figure 3 3 shows a diagram of the ClassWork Plus system Refer to these diagrams when conne...

Page 11: ...k Plus Line Multiplier system Line Multiplier Instructor CPU 6 CPU 5 CPU 4 CPU 3 CPU 2 CPU 1 CPU 7 CPU 8 CPU 9 CPU 10 CPU 11 CPU 12 CPU 13 CPU 14 CPU 15 CPU 16 CPU 17 CPU 18 CPU 19 CPU 20 CPU 21 CPU 2...

Page 12: ...ier to the ClassWork Plus system Connect the DB25 male connector from the System cable see Figure 3 4 to the System In port of the Line Multiplier Figure 3 4 System cable Figure 3 5 System In port con...

Page 13: ...in Branch 1 Figure 3 6 System In port connection 3 5 Connecting Branch 2 The System cable from Student Interface Unit SIU 13 is used to connect Branch 2 to the Line Multiplier see Figure 3 7 To conne...

Page 14: ...19 in Branch 3 Figure 3 8 System In port connection 3 7 Connecting Branch 4 The System cable from Student Interface Unit SIU 25 is used to connect Branch 4 to the Line Multiplier see Figure 3 9 To con...

Page 15: ...lier Figure 3 10 Terminator 3 9 Connecting the Power Supply Insert the power supply plug into the 9 VAC power port on the rear of the ClassWork Plus Line Multiplier and plug the cord into a wall socke...

Page 16: ...rk Plus classroom with 30 students connected to one Line Multiplier Table 3 1 indicates how to set the Line Multiplier DIP switches in the example shown in Figure 3 12 Table 3 1 Setting the DIP switch...

Page 17: ...7 18 and 19 20 consecutively Table 3 2 shows how to set the Student Number Table 3 2 Setting the Student Number Student No Switch Number 1 2 3 4 5 6 7 8 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 2 0 1 0 0 0...

Page 18: ...0 0 0 0 1 0 0 33 1 0 0 0 0 1 0 0 34 0 1 0 0 0 1 0 0 35 1 1 0 0 0 1 0 0 36 0 0 1 0 0 1 0 0 37 1 0 1 0 0 1 0 0 38 0 1 1 0 0 1 0 0 39 1 1 1 0 0 1 0 0 40 0 0 0 1 0 1 0 0 41 1 0 0 1 0 1 0 0 42 0 1 0 1 0 1...

Page 19: ...Table 3 2 continued Setting the Student Number Student No Switch Number 1 2 3 4 5 6 7 8 57 1 0 0 1 1 1 0 0 58 0 1 0 1 1 1 0 0 59 1 1 0 1 1 1 0 0 60 0 0 1 1 1 1 0 0 61 1 0 1 1 1 1 0 0 62 0 1 1 1 1 1 0...

Page 20: ...e rear of the ClassWork Plus Line Multiplier LED Indicators The ClassWork Plus Line Multiplier s front panel contains three LED indicators for each branch Figure 4 1 shows a diagram of the front panel...

Page 21: ...nctioning branch is not functioning properly properly Function Status Indicates that a ClassWork Indicates that no function is being performed ClassWork function is on one of the CPUs in being perform...

Page 22: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2001 Black Box Corporation All rights reserved...

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