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October 20, 1998

3

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

Содержание VX500

Страница 1: ...91500 Revision B VX500 Fiberoptic Switch Operation Manual...

Страница 2: ...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 fi...

Страница 3: ...el 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 Calcul...

Страница 4: ...91500 Revision B 4 DiCon Fiberoptics VX500 Fiberoptic Switch...

Страница 5: ...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...

Страница 6: ...sual 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...

Страница 7: ...uring a reset operation optical noise may appear on various output channels as the armature rotates Table 1 Interface Pin Assignments Pin Number Signal Name Signal Type Description 1 GND Power Signal...

Страница 8: ...e 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...

Страница 9: ...ET D4 D3 D2 D1 D0 Active Channel 0 x x x x x 0 reset 1 0 0 0 0 0 1 1 0 0 0 0 1 2 1 0 0 0 1 0 3 1 0 0 0 1 1 4 1 0 0 1 0 0 5 1 0 0 1 0 1 6 1 0 0 1 1 0 7 1 0 0 1 1 1 8 1 0 1 0 0 0 9 1 0 1 0 0 1 10 1 0 1...

Страница 10: ...shown 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...

Страница 11: ...nnels The right dia gram applies to units with 17 32 output channels Table 3 Control Codes for Synchronous Duplex 1 N Configurations RESET D4 D3 D2 D1 D0 Common 1 Active Channel Common 2 Active Channe...

Страница 12: ...tive Channel Common 2 Active Channel 0 x x x x x 0 reset 1 reset 1 0 0 0 0 0 1 0 block 1 0 0 0 0 1 2 1 1 0 0 0 1 0 3 2 1 0 0 0 1 1 4 3 1 0 0 1 0 0 5 4 1 0 0 1 0 1 6 5 1 0 0 1 1 0 7 6 1 0 0 1 1 1 8 7 1...

Страница 13: ...units with 9 16 output channels Figure 10 2 N Blocking Channel Order Top View 1 1 1 0 0 1 26 25 1 1 1 0 1 0 27 26 1 1 1 0 1 1 28 27 1 1 1 1 0 0 29 28 1 1 1 1 0 1 30 29 1 1 1 1 1 0 31 30 1 1 1 1 1 1 b...

Страница 14: ...hannel 0 x x x x x 0 reset 1 reset 1 0 0 0 0 0 1 0 block 1 0 0 0 0 1 block 1 1 0 0 0 1 0 2 block 1 0 0 0 1 1 block 2 1 0 0 1 0 0 3 block 1 0 0 1 0 1 block 3 1 0 0 1 1 0 4 block 1 0 0 1 1 1 block 4 1 0...

Страница 15: ...Switch Operation 15 Timing Parameters Figure 11 VX500 Switch Timing Figure 12 VX500 Power Up Timing STROBE BUSY OPTICAL OUTPUT D4 D0 RESET Tstb Th Tsu Tbsy Tsw POWER RESET BUSY STROBE D4 D0 Tpwr ERROR...

Страница 16: ...Switch 8 16 ms 300 ms 428 ms Additionally there are two special cases for calculating switching time First if a STROBE pulse is applied with no change in the latched value of the channel address D4 D...

Страница 17: ...peration is complete and the device is ready to accept new instructions 3 With the RESET line still high the user changes the channel address and applies another STROBE pulse the BUSY line goes high w...

Страница 18: ...for connection to the printer port is shown in Figure 15 The basic control flow for the VX500 is illustrated in Figure 14 For spe cific procedures for sending reset and switch instructions see Switch...

Страница 19: ...esses 3BC 3BD 3BE 10 WAIT 1 wait during power up 970 ms min 20 FOR K 1 TO 8 STEP 1 step through channels 1 through 8 30 INBYTE INP H379 read BUSY signal 40 IF INBYTE AND 128 128 THEN GOTO 30 BUSY HIGH...

Страница 20: ...ection multimode fiber c 20 dB switching timed d Based on BUSY output pulse Actual optical switching time may be faster 300 16 N ms isolation 80 dB durability 10 million cycles repeatabilitye e Sequen...

Страница 21: ...October 20 1998 Device Housing 21 Figure 16 VX500 Chassis Size 1 Housing Figure 17 VX500 Chassis Size 2 Housing...

Страница 22: ...te and permanently damage optical fiber connectors In order to obtain the most stable repeatable optical performance immobilize optical cables using wide pieces of tape or some form of mechanical cush...

Страница 23: ...rque specified by the connector manufacturer Do not over tighten the connector as this can lead to optical loss and con nector damage Check the optical insertion loss If the loss is unacceptable Remov...

Страница 24: ...DiCon Fiberoptics Inc 1331 Eighth Street Berkeley CA 94710 USA World Wide Web www diconfiberoptics com...

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