Dicon VX500 Bedienungsanleitung

91500 Revision B

VX500

Fiberoptic Switch

Operation Manual

91500 Revision B

2 DiCon Fiberoptics VX500 Fiberoptic Switch

No part of this manual may be reproduced, in any form or by any means, electronic or

mechanical, including photocopying, without the express written permission of DiCon

Fiberoptics.

We have reason to believe that a number of the company and product names appearing

herein constitute trademarks or have been designated as such by their respective holders.

No attempt has been made to designate these words as trademarks or as registered trade-

marks. The inclusion, or exclusion of a word or term is not intended to affect, or express a

judgment on, the validity or legal status of the word or term as a trademark, or other propri-

etary term.

The information provided within this manual has been carefully reviewed for technical accu-

racy. DiCon Fiberoptics reserves the right to correct technical or typographical errors at any

time, without prior notice. In no event shall DiCon Fiberoptics be liable for errors contained

herein, or for incidental or consequential damages arising out of or related to, this docu-

ment or the information contained in it.

Warranty

DiCon Fiberoptics warrants this product to be free from defects in both workmanship and

performance for a period of one year from the time of original shipment. During the war-

ranty period, DiCon Fiberoptics will, at its option, repair or replace any material found to be

defective.

The foregoing warranty extends to all cases, except where the product has been damaged

through misuse, mishandling, inadequate maintenance, owner modification, failure to fol-

low the installation and operating instructions provided by DiCon Fiberoptics, flood, fire or

other events outside our reasonable control.

EXCEPT AS SPECIFIED HEREIN, DICON FIBEROPTICS MAKES NO OTHER WAR-

RANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE.DICONFIBEROPTICSSHALLNOT BELIABLEFORDAMAGESRESULTING

FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSE-

QUENTIAL DAMAGES. This limitation of the liability of DiCon Fiberoptics will apply regard-

less of the form of action whether based on contract, tort, or any other legal theory.

All Returns

Contact DiCon Fiberoptics before returning any product.

DiCon will provide a Return

Material Authorization (RMA) number and shipping instructions. No product will be

accepted for return without an RMA number clearly marked on the outside of the shipping

material.

Any unit that is returned under warranty, but for which evidence of misuse or mishandling is

found, will be subject to testing and processing fees, in addition to any repair costs.

DiCon Fiberoptics will cover anyfreight costs for returning warranty returned material to the

customer. The customer is responsible for covering any freight costs for sending materials

to DiCon Fiberoptics. The customer is responsible for all freight costs for returned materials

found to be out of warranty.

Use the original packing materials when returning material to DiCon Fiberoptics. If the orig-

inal packing materials are unavailable, the customer is responsible for ensuring adequate

packing materials are used to prevent damage during shipping.

October 20, 1998

Contents

Product Overview ....................................................................................................... 5

Optical Switch Module ............................................................................................... 5

VX500 Interface Board .............................................................................................. 5

Connecting to the Interface ................................................................................. 6

Reading the Status LED ............................................................................................ 6

Thermal Considerations ............................................................................................. 6

Switch Operation ........................................................................................................ 7

Starting the Switch ..................................................................................................... 7

Resetting the Switch .................................................................................................. 7

Losing Power to the Switch ....................................................................................... 8

Selecting an Output Channel ..................................................................................... 8

Simplex 1 × N Configurations .............................................................................. 8

Synchronous Duplex 1 × N Configurations ....................................................... 10

2×N Non-Blocking Configurations ................................................................... 11

2×N Blocking Configurations ........................................................................... 13

Maintaining Channel Position .................................................................................. 14

Timing Parameters .................................................................................................. 15

Calculating Switching Time ...................................................................................... 16

Switch Control ........................................................................................................... 17

Controlling the VX500 Using a PC Printer Port ....................................................... 18

Specifications ............................................................................................................. 20

Device Housing ......................................................................................................... 20

Handling Fiberoptic Components and Cables ................................................. 22

Handling Fiberoptic Cables ...................................................................................... 22

Storing Optical Connectors ...................................................................................... 22

Cleaning Optical Connectors ................................................................................... 22

Mating Optical Connectors ...................................................................................... 23

91500 Revision B

4 DiCon Fiberoptics VX500 Fiberoptic Switch

October 20, 1998

Product Overview 5

Product Overview

DiCon’s VX500 Fiberoptic Switch is a multi-channel fiberoptic switch designed for integra-

tion within products that require 1×N or 2×N optical switch routing. The design of the

VX500 is based on patented technology which enables precise fiber-to-fiber positioning of

either singlemode or multimode fibers.

Optical Switch Module

The VX500 optical switch module is an opto-mechanical switch that allows selection of an

individual fiber channel by means of a high-resolution stepper motor. The stepper motor

moves one or two common fibers into direct alignment with one or two of several output

fibers using DiCon’s patented moving fiber technology.

The VX500 is optically passive, operating independently of data rate, data format, and opti-

cal signal direction. Some of the terms used to describe the internal components of VX500

optical switch module are illustrated in Figure 1.

Figure 1: The Internal Components of the VX500

VX500 Interface Board

The VX500 switch module contains an electronic interface board that converts TTL input

signals to the switch's optical channel position. The important components of the interface

are labeled in Figure 2.

The twelve-pin interface connector has six data inputs (RESET and <D4:D0>) and a

STROBE input as well as two status outputs. The BUSY output indicates whether the

device is busy performing an operation or ready to receive new switching instructions. The

ERROR output indicates when an error has occurred.

The board requires a constant +12 VDC supply both during switching and switch hold.

Common

Moving Fiber Output/Input

Fixed Fibers

Optical

Proximity

Sensor

Moving

Armature

Optically Off

Channel 0

Channel 1

Channel 2

Channel N

Channel 3

91500 Revision B

6 DiCon Fiberoptics VX500 Fiberoptic Switch

Connecting to the Interface

The electrical connector on the DiCon VX500 Switch is a male twelve-pin 0.100-inch right-

angle square-pin friction-lock header (Molex part number 22-12-2124). To mate to this con-

nector, use a corresponding female receptacle housing (Molex part number 22-01-3127 or

equivalent) and contacts (Molex part number 08-56-0110 or equivalent). The mating con-

nector can be obtained from Molex (Tel: (708)969-4550) or from DiCon Fiberoptics, Inc.

The maximum length of the control cable is two meters. Use shielded cable for lengths

greater than one meter.

Figure 2: The VX500 Interface Board (Top View)

Reading the Status LED

The status LED provides a constant visual indication of the state of the switch. The four

possible states are defined in the following table.

Thermal Considerations

The VX500 generates about 3 watts of heat continuously. The switch may not perform cor-

rectly if it is allowed to overheat (50°C max.). Under some circumstances, a vented air flow

may be necessary in order to keep the housing temperature within range.

Interface Board

LED Status Indicator

Twelve-Pin Electrical Connector

Switch Housing

Fiber Pigtails

Pin 1

Appearance State

Green Ready. The switch is operating properly and ready to receive switching instructions.

Yellow Busy. The device is performing a switch operation.

Red Error. A user error or device malfunction has occurred.

None Off. No power to the switch.

Warning

The switch may not perform correctly if it is allowed to overheat (50°C max.). Under some

circumstances, a vented air flow may be necessary in order to keep the housing temperature

within range.

October 20, 1998

Switch Operation 7

Switch Operation

The twelve-pin interface is used for supply power, channel selection, and status checking.

The following table defines the signals associated with each pin.

Starting the Switch

To start the switch, apply power (+12 VDC ±5%, 300mA max.) to the POWER line. A stable

voltage with less than 10mV RMS ripple is recommended.

The switch requires a 970-ms initialization period upon power up while the switch armature

returns to reset position. Do not apply TTL input to the data lines (D0, D1, D2, D3, D4,

STROBE, and RESET) during initialization. Switch control may lock up if data is applied

during initialization. If the switch locks up, cycle the supply power and restart the switch.

During the 970-ms initialization period, the BUSY and ERROR outputs as well as the opti-

cal outputs are invalid.

Resetting the Switch

When the VX500 is in the reset position (also called the park position, channel zero, or opti-

cal off), there is no optical connection to any output channel. Set the switch to the reset

position to prevent optical data from passing through the switch, or to reset the stepper

motor. During a reset operation, optical noise may appear on various output channels as

the armature rotates.

Table 1: Interface Pin Assignments

Number Signal

Name Signal

Type Description

1 GND Power Signal ground.

2 GND Power Power ground.

3 D0 Input The D0 input is the LSB of the channel address.

4 D1 Input The D1 input is bit 1 of the channel address.

5 D2 Input The D2 input is bit 2 of the channel address.

6 D3 Input The D3 input is bit 3 of the channel address.

7 D4 Input The D4 input is the MSB of the channel address.

8 STROBE Input The STROBE input is a falling-edge-trigger clock signal.

9 BUSY Output The BUSY output is high when the switch is busy, and low

when the switch is ready.

10 ERROR Output The ERROR output is low during normal operation. A high

ERROR output indicates that the requested channelis out of

range (user error) or that a stepper motoror proximity switch

error has occurred (device malfunction).

11 RESET Input Set RESET to low to return the switch to the reset position,

and to high to choose a different output channel.

12 POWER Power Power supply input (+12VDC ±5%, 300mA max.)

Warning

Applying TTL-level signals to the data lines before or during switch initialization may lock up

switch control. Do not apply TTL-level signals to the data lines until power has been applied to the

POWER input for 970ms.

91500 Revision B

8 DiCon Fiberoptics VX500 Fiberoptic Switch

One way to reset the switch is to cycle the supply power to the switch. The switch returns

to the reset position following the initial application of power to the POWER pin (see “Start-

ing the Switch” on page 7).

To return the switch to the reset position without interrupting the supply power, set the

RESET input to low and apply a STROBE pulse. The RESET input is latched by the falling

edge of the STROBE signal, respecting hold, setup, and pulse width constraints (see

Table 6). The BUSY output remains high until the reset operation is complete and the

device is ready to receive additional instructions.

Losing Power to the Switch

If the supply power is interrupted the switch

does not

latch in its current position. Instead,

it loses direct fiber-to-fiber alignment, breaking the optical connection. When supply power

is restored the switch automatically restarts, returning to the reset position.

Selecting an Output Channel

To choose a specific channel, set the RESET input to high, set the channel address inputs

(<D4:D0>) to the appropriate value (see Tables 2, 3, 4, and 5), and apply a STROBE pulse.

The inputs are latched by the falling edge of the STROBE signal, respecting hold, setup,

and pulse width constraints (see Table 6). The BUSY output will go high until the STROBE

pulse has ended, the switch operation is complete, and the device is ready to receive addi-

tional instructions. Note that the BUSY signal will remain high until the end of the STROBE

pulse, even if the switch operation is complete and the optical connection is stable.

If the latched value of the channel address (<D4:D0>) is the same as the previous latched

value, the BUSY signal will go high for 60–80ms even though there is no switch movement.

If the latched value of the channel address (<D4:D0>) indicates an out-of-range position,

the BUSY and ERROR signals will go high for 60–80ms.

The following sections list the switch channel number associated with each data-input set-

ting for simplex 1×N, synchronous duplex 1×N, 2×N blocking, and 2×N non-blocking

switches, respectively.

Simplex 1×N Configurations

The relationship between the optical inputs and outputs in a VX500 simplex 1 × N switch is

shown in Figure 3.

Figure 3: Simplex 1

N Switch Configuration

The arrangement of the fiber pigtails on a VX500 1×N switch is shown in Figure 4. The left

diagram applies to switch units with up to 16 output channels. The right diagram applies to

units with 17–32 output channels.

October 20, 1998

Switch Operation 9

Figure 4: Simplex 1

N Channel Order (Top View)

To select the output channel of a simplex 1×N switch with up to 32 output channels, set the

five channel address inputs (<D4:D0>) and the RESET input as indicated in Table 2, then

strobe the device.

Table 2: Control Codes For Simplex 1

N Configurations

RESET D4 D3 D2 D1 D0 Active Channel

0xxxxx0reset

1000001

1000012

1000103

1000114

1001005

1001016

1001107

1001118

1010009

10100110

10101011

10101112

10110013

10110114

10111015

10111116

11000017

11000118

11001019

11001120

11010021

11010122

11011023

11011124

11100025

11100126

COMMON

CHANNEL 1

CHANNEL 2

CHANNEL 3

CHANNEL N

COMMON

CHANNEL 1

CHANNEL 2

CHANNEL 3

CHANNEL N

91500 Revision B

10 DiCon Fiberoptics VX500 Fiberoptic Switch

Synchronous Duplex 1×N Configurations

The relationship between the optical inputs and outputs in a VX500 synchronous duplex

1×N switch is shown in Figure 5.

Figure 5: Synchronous Duplex 1

N Switch Configuration

The arrangement of the fiber pigtails on a VX500 synchronous duplex 1×N switch isshown

in Figure 6. The left diagram applies to switch units with up to 16 output channels (1×8).

The right diagram applies to units with 18–32 output channels (1×9 to 1×16).

Figure 6: Synchronous Duplex 1

N Channel Order (Top View)

11101027

11101128

11110029

11110130

11111031

11111132

Table 2: Control Codes For Simplex 1

N Configurations (Continued)

RESET D4 D3 D2 D1 D0 Active Channel

1-1

2-1

N-2

1-2

2-2

N-1

COMMON 1

COMMON 2

CHANNEL 1-1

CHANNEL 1-2

CHANNEL N-2

COMMON 1

COMMON 2

CHANNEL 1-1

CHANNEL 1-2

CHANNEL N-2

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