DCB SPL Multidrop Manuale utente

8500025

SPL Multidrop

TABLE OF CONTENTS

SECTION 1 - DESCRIPTION.......................................................................2

SECTION 2 - SPECIFICATIONS .................................................................3

SECTION 3 - INSTALLATION.....................................................................5

SECTION 4 - CONTROLS AND INDICATORS...........................................7

SECTION 5 - NETWORK MANAGEMENT PORT....................................13

SECTION 6 - INTERFACE SIGNALS AND CABLING..............................21

SECTION 7 - TROUBLESHOOTING.........................................................27

SECTION 8 - WARRANTY.........................................................................30

Data Comm for Business, Inc.

PO Box 6329

Champaign, IL 61826-6329 August 7, 2002

217-897-6600 Firmware Version: 16.51 / 32.51

www.dcbnet.com

1. DESCRIPTION

The DCB SPL MultiDrop Remote (SPLD) multiplexer is used in

conjunction with the SRX MultiDrop Host. The SPLD is a DCB SPL

hardware platform with optional MultiDrop firmware that allows it to

operate on multidrop analog or digital phone lines.

While similar in appearance to the SPL, the SPLD is a totally different

product designed for a different application and should be treated as

such. Some of the switches perform the same function on both units.

Some do not. Please refer to appropriate section of this manual for

SPLD switch functions.

POWER TRANSMIT

CONDITION RECEIVE

ERROR MULTI-

PLEXING TEST

DATA MULTIPLEXER

DCB

SPL

SPL Drop Multiplexer

2. SPECIFICATIONS

2.1 Product

2.1.1 Data Ports

Port Speeds

Asynchronous only

300, 1200, 1800, 2400, 4800, 9600, 19,200 or 38,400 bps

Data Format

10 bits/character, 1 start, 1 stop, 8 data (including parity)

Interface

RS-232D, implemented in DB-25 female connectors

2.1.2 Composite Port

Speed

Synchronous, to 64 Kbps

Asynchronous at 1200, 2400, 4800, 9600, 19,200 or 38,400 bps

Interface

RS-232D, implemented in DB-25 male connector

2.2 Environmental

Operation: 0 to 65° C, 10 to 85% relative humidity

Storage: -40 to 85° C, 10 to 85% relative humidity

2.3 Physical / Electrical

10¼" W x 9¾" D x 2½" H - 2 thru 6 port units

10¼" W x 9¾" D x 4¼" H - 8 thru 14 port units

120 VAC external power supply

30 watts, .25 amps

2.4 Network Management Port Commands

Help Network

Help Port

Show Port Configuration

Show ID

Show Map

Show Status

Show Network Configuration

Change Port Configuration

Change Delay Timeout

Change ID

Change Network Configuration

Activity Counts

Drop Activity

Zero Activity Counters

Flow Control

Test Tools

Capture Port

Copy Command

Show RS232

Test Message

Remote Test Loop

Monitor Port TX

Monitor Port RX

NMP Parity

Port Reset

Reset Mux

Type

Repeat Last Command

Disconnect NMP

3. INSTALLATION

3.1 Unpacking

The following is included with each SPLD multiplexer

•Multiplexer and external power supply

•Cable for connecting a modem or DSU/CSU

•Manual

•Information regarding warranty, maintenance contracts and

repair

3.2 Location

Place the multiplexer in a clear area where you can reach the front

panel for setup and the rear panel to connect the cables. The

multiplexer has an external power supply that requires a properly

grounded 120 VAC outlet. The total power cord length is about 12 feet.

3.3 Setup

Each SPLD multiplexer must have a unique DROP ADDRESS set into

switches behind the front panel. In addition, each data port must have

the proper speed, parity and flow control settings. This is also done

with switches. See Section 4 for the location and proper setting of

switches.

3.4 Connections

The SPLD is connected to the modem or DSU/CSU using the cable

supplied. Connect the Network port on the multiplexer to the RS-232

interface port on the modem or DSU/CSU. The modem or DSU/CSU

must be set for controlled carrier operation (RTS controlled from

interface). This is absolutely required for the system to operate

properly. See your modem or DSU/CSU manual for information on how

to set the unit this way. For information regarding data port

connections to DTE devices, see Section 6.

3.5 Installation Summary

1. Set the proper Drop Address into the 6-position DIP switch.

2. Configure the ports for correct speed, parity and flow control.

3. Set the modem or DSU/CSU for controlled carrier operation.

4. Connect the multiplexer Network port to the modem or

DSU/CSU using the cable supplied.

5. Connect the modem or DSU/CSU to the phone line.

6. Use the DA command, from Port 1 Setup, to verify the drop is

being polled. See paragraphs 5.2.1 and 5.4.12.

7. Check mapped ports for a login prompt from the host.

4. CONTROLS AND INDICATORS

4.1 Switches

The front panel of the SPLD is held in place with magnets. It can be

easily removed by pulling on the small handles provided. Behind this

panel are one or more circuit boards. Each circuit board has several

banks of switches called DIP switches.

1 2 3 4 5 6 1 2 3 4 5 6 7 81 2 3 4 5 6 7 8

1 2 3 4 5 6 7 81 2 3 4 5 6 7 81 2 3 4 5 6 7 81 2 3 4 5 6 7 8

Network

Port 1

Port 2

Port 11 Port 14

Figure 1

Configuration Switches

Figure 1 illustrates the Network and Port Configuration switches. The

Network switch contains 6 sections numbered 1 thru 6. The Port

switches have 8 sections each.

4.1.1 Network Switch

4.1.1.1 Sync / Async

Position 1 of the Network switch is used to select synchronous or

asynchronous operation. When DOWN the network operates in

SYNCHRONOUS mode receiving clocks from the attached modem

device. When UP the network port operates ASYNCHRONOUS at the

rate set by the CN command (see paragraph 5.4.12).

4.1.1.2 Drop Address

For a multidrop network to work properly, each SPLD multiplexer

must have a unique drop address. The Drop Address is set using

positions 2-6 of the Network switch. Firmware version 16.xx supports

16 drops (0 thru 15). Version 32.xx supports 32 drops.

Network Switch Position

2 3 4 5 6

Drop #

0Down Down Down Down Down

1Down Down Down Down Up

2Down Down Down Up Down

3Down Down Down Up Up

4Down Down Up Down Down

5Down Down Up Down Up

6Down Down Up Up Down

7Down Down Up Up Up

8Down Up Down Down Down

9Down Up Down Down Up

10 Down Up Down Up Down

11 Down Up Down Up Up

12 Down Up Up Down Down

13 Down Up Up Down Up

14 Down Up Up Up Down

15 Down Up Up Up Up

16 Up Down Down Down Down

17 Up Down Down Down Up

18 Up Down Down Up Down

19 Up Down Down Up Up

20 Up Down Up Down Down

21 Up Down Up Down Up

22 Up Down Up Up Down

23 Up Down Up Up Up

24 Up Up Down Down Down

25 Up Up Down Down Up

26 Up Up Down Up Down

27 Up Up Down Up Up

28 Up Up Up Down Down

29 Up Up Up Down Up

30 Up Up Up Up Down

31 Up Up Up Up Up

4.1.2 Port Configuration

Ports are configured using the 8-position DIP switches. See Figure 1.

Position 1 is not used. Position 2 sets port loopback for troubleshooting.

Positions 3 thru 5 set flow control and parity. Positions 6 thru 8 set speed.

4.1.2.1 Port Loopback

Individual ports may be put in loopback using position 2 of the port

configuration switch. When UP, loopback is enabled. Port loopbacks

are used during troubleshooting and will be discussed in more detail in

Section 7. Normally this switch should be left down.

4.1.2.2 Flow Control and Parity

Flow control and parity must be set for each port using positions 3,

4 and 5 of the port DIP switch. This setting must match the

configuration of the attached DTE device and should match the

configuration of the host computer ports. The factory default is

Xon/Xoff Even.

Port Switch Position

345 Option

Down Down Down Xon/Xoff Even Parity

Down Down Up Xon/Xoff Odd Parity

Down Up Down Xon/Xoff Mark Parity

Down Up Up Xon/Xoff Space Parity

Up Down Down Xon/Xoff Transparent

Up Down Up CTS / No Busy

Up Up Down CTS / Busy Low

Up Up Up CTS / Busy High

4.1.2.3 Port Speed

Port speed is set using positions 6, 7 and 8 of the port DIP switch. The

port speed must match the speed of the attached DTE device. The

factory default is 9600.

Port Switch Position

678 Speed

Up Up Down 38400 BPS

Up Up Up 19200 BPS

Down Down Down 9600 BPS

Down Down Up 4800 BPS

Down Up Down 2400 BPS

Down Up Up 1800 BPS

Up Down Down 1200 BPS

Up Down Up 300 BPS

1 2 3 4 5 6 1 2 3 4 5 6 7 81 2 3 4 5 6 7 8

1 2 3 4 5 6 7 81 2 3 4 5 6 7 81 2 3 4 5 6 7 81 2 3 4 5 6 7 8

Reset Switch Port 1 Setup/Normal Switch

Figure 2

Special Switches

4.1.3 Port 1 Setup

Port 1 setup is controlled by a three position toggle switch located on the

bottom circuit board between the Multiplexing and Test indicators (Figure

2). Normally this switch is left in the center position. When this switch

is pushed to the left, port 1 setup is enabled. This allows a terminal

connected to port 1 of the multiplexer to perform the functions of the

Network Management port. See Section 5 for information about Network

Management port functions.

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