Table of Contents
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Table of Contents
Related Manuals for Dicon VX500
Summary of Contents for Dicon VX500
- Page 1 VX500 Fiberoptic Switch Operation Manual 91500 Revision B...
- Page 2 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.
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Page 3: Table Of Contents
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 .......... - Page 4 DiCon Fiberoptics VX500 Fiberoptic Switch 91500 Revision B...
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Page 5: Product Overview
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. -
Page 6: Connecting To The Interface
Off. No power to the switch. 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. -
Page 7: Switch Operation
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. -
Page 8: Losing Power To The Switch
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 ×... - Page 9 Switch Operation × Figure 4: Simplex 1 N Channel Order (Top View) CHANNEL N CHANNEL N CHANNEL 3 CHANNEL 2 CHANNEL 1 COMMON CHANNEL 3 CHANNEL 2 CHANNEL 1 COMMON × 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.
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Page 10: Synchronous Duplex 1 × N Configurations
N Configurations (Continued) RESET Active Channel × Synchronous Duplex 1 N Configurations The relationship between the optical inputs and outputs in a VX500 synchronous duplex × N switch is shown in Figure 5. × Figure 5: Synchronous Duplex 1 N Switch Configuration ×... -
Page 11: N Non-Blocking Configurations
23-2 24-1 24-2 25-1 25-2 × N Non-Blocking Configurations × The relationship between the optical inputs and outputs of a VX500 2 N non-blocking switch is shown in Figure 7. × Figure 7: 2 N Non-Blocking Switch Configuration block ×... - Page 12 DiCon Fiberoptics VX500 Fiberoptic Switch × Figure 8: 2 N Non-Blocking Channel Order (Top View) CHANNEL N CHANNEL N CHANNEL 2 CHANNEL 1 COMMON 2 COMMON 1 CHANNEL 2 CHANNEL 1 COMMON 2 COMMON 1 × To select the output channel of a 2 N non-blocking switch with up to 32 output channels, set the five channel address inputs (<D4:D0>) and the RESET input as indicated in...
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Page 13: N Blocking Configurations
When the channel address is set to N (the highest input channel), Common 1 is blocked and Common 2 is aligned with Channel N. × N Blocking Configurations × The relationship between the optical inputs and outputs of the VX500 2 N blocking switch is shown in Figure 9. × Figure 9: 2... -
Page 14: Maintaining Channel Position
DiCon Fiberoptics VX500 Fiberoptic Switch × To select the output channel of a 2 N blocking switch with up to 16 output channels, set the five channel address inputs (<D4:D0>) and the RESET input as indicated in Table 5, then strobe the device. -
Page 15: Timing Parameters
Switch Operation Timing Parameters Figure 11: VX500 Switch Timing Tstb STROBE <D4:D0> RESET Tbsy BUSY OPTICAL OUTPUT Figure 12: VX500 Power-Up Timing POWER Tpwr STROBE <D4:D0> RESET BUSY ERROR OPTICAL OUTPUT October 20, 1998... -
Page 16: Calculating Switching Time
Status and optical outputs are unreliable. a. DiCon recommends a low pulse width of 1 µsec to 10 µs. Calculating Switching Time The time period that begins at the falling edge of the STROBE signal and ends upon com- pletion of the switching operation can be divided into three constituent periods. -
Page 17: Switch Control
Switch Control Switch Control × Figure 13 illustrates the following sample control sequence for a 1 N simplex switch. 1. Following power-up, the switch returns to reset position. After the initialization period, the device is ready to receive instructions. 2. The user brings STROBE high, brings RESET high to enable channel selection, and sets the desired channel address. -
Page 18: Controlling The Vx500 Using A Pc Printer Port
The recommended cable configuration 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 Operation” on page 7, “Timing Parameters”... - Page 19 -SLCT IN 19-25 GND The following BASIC program can be used to control the VX500 from a PC printer port. The program switches channel-by-channel from channel 1 through channel 8. If an error is encountered, the program resets the switch. If the error persists, the program exits. The program expects the VX500 to be connected to the printer port as outlined in Figure 15.
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Page 20: Specifications
Sequential repeatability for 100 cycles at constant temperature after warm-up. f. Measured at 1550 nm. Device Housing The VX500 Switch is suitable for mounting on a panel or printed circuit board. Four mount- ing holes are provided. Do not remove the housing cover. Removal of housing cover voids warranty. - Page 21 Device Housing Figure 16: VX500 Chassis Size 1 Housing Figure 17: VX500 Chassis Size 2 Housing October 20, 1998...
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Page 22: Handling Fiberoptic Components And Cables
DiCon Fiberoptics VX500 Fiberoptic Switch Handling Fiberoptic Components and Cables Handling Fiberoptic Cables Your switch may come with fiber pigtail outputs. Treat cables with care to avoid cable dam- age and minimize optical loss. The minimum bend radius for most optical cables is 35mm. -
Page 23: Mating Optical Connectors
Handling Fiberoptic Components and Cables Mating Optical Connectors • Clean both connectors prior to mating. Any small particles trapped during the mating process can permanently damage the connector. • Insert the appropriate connector ferrule into the adapter smoothly. Do not allow the fiber tip to contact any surface. - Page 24 DiCon Fiberoptics, Inc. 1331 Eighth Street Berkeley, CA 94710 USA World Wide Web www.diconfiberoptics.com...