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SB
User Manual
40 pgs279.77 Kb0

HP SB User Manual

SB SERIES
FIBEROPTIC SWITCH
User’s Manual
Contents
Safety Information, Instructions, and Symbols.......................................................................1
Safety Information...........................................................................................................1
Classification .......................................................................................................1
Line Power Requirements ...................................................................................1
Fuse Type............................................................................................................1
Safety Instructions...........................................................................................................2
Before Initializing and Operating the Unit............................................................2
Operating the Unit ...............................................................................................2
Safety Symbols...............................................................................................................4
Compliance.....................................................................................................................5
CE Compliance....................................................................................................5
General Information and Specifications..................................................................................6
General Information ........................................................................................................6
Single-Common (SB-C) Switch Configuration .....................................................6
Dual-Common (SB-D) Switch Configuration........................................................7
Single Step Dual Common (SB-E) Switch Configuration.....................................7
Dual-Common Blocking (SB-F) Switch Configuration..........................................8
Key Features.......................................................................................................8
Applications.........................................................................................................8
Standard Accessories ..........................................................................................8
Optional Accessories...........................................................................................8
Specifications..................................................................................................................9
Getting Started........................................................................................................................11
Before Initializing and Operating the Unit ......................................................................11
Initial I nspecti on.............................................................................................................11
Operating Environment.................................................................................................11
Temperature......................................................................................................12
Humidity.............................................................................................................12
Ventilation..........................................................................................................12
Storing and Shipping.....................................................................................................12
Claims and Repackaging...................................................................................12
Returning Shipments to JDS Uniphase.............................................................12
Cleaning Connectors.....................................................................................................13
Installing the Switch.......................................................................................................14
Operating and Maintenance Instructions..............................................................................15
Front Panel....................................................................................................................15
Operating Keys..................................................................................................15
Status LEDs.......................................................................................................15
Rear Panel....................................................................................................................16
External Swit ch Module Connections............................................................................16
External Switch Module without TTL Input Controls...........................................16
External Switch Module with TTL Input Controls................................................17
SD000153 Rev. J May 2000
Sample Driver Application: Electrical Equival ent of Driver.............................................17
Powering Up the Switch................................................................................................18
Using and Selecting a Channel.....................................................................................18
Setting the GPIB Address.............................................................................................19
Setting the Interface Command Set for SC and SX Switches.......................................19
Controlling the Drivers...................................................................................................19
Controlling the Switch Locally.......................................................................................20
Controlling the Switch Remotely by GPIB Interface ......................................................20
Controlling the Switch Remotely by RS232 Interface....................................................20
Calibrating the Switch....................................................................................................21
Maintaining the Switch ..................................................................................................21
Programming Guid e................................................................................................................23
GPIB Pin Assignment....................................................................................................23
Setting the GPIB Address.............................................................................................23
GPIB Interface Functions..............................................................................................24
RS232
Pin Assignment.................................................................................................24
RS232 Interface Specifications.....................................................................................24
RS232 Driver
Pin Assignment.......................................................................................25
Operation and Query Commands .................................................................................25
Command Parser Rules.....................................................................................25
Operation Commands........................................................................................26
Query Commands..............................................................................................27
Status Reporting and Service Request Control.............................................................29
Condition Register.............................................................................................29
Status Register ..................................................................................................29
SRQ Mask Register ...........................................................................................30
GPIB Programming Examples.......................................................................................30
Sending Commands..........................................................................................31
Serial Polling the S t atus Register ......................................................................31
Generating a Service Request Interrupt ............................................................32
Learn Query (LRN?)..........................................................................................32
RS232 Programming Examples....................................................................................32
Sending Commands..........................................................................................33
Querying Status.................................................................................................33
Reading the Status Register..............................................................................33
Setting the Interface Command Set..............................................................................33
SC Series Switch Command Set (SCXXX-0XXX Models).................................34
SX Series Switch Command Set.......................................................................34
SD000153 Rev. J May 2000
For sales and service information,
contact JDS Uniphase or your local representative.
JDS Uniph ase Cor poration
570 West Hunt Club Road
Nepean, Ontario, Canada
K2G 5W8
Phone: 613 727-1303
Fax: 613 727-8284
E-mail: sales@jdsunph.com
Website: http://www.jdsunph.com
SD000153 Rev. J May 2000
Safety Information, Instructions, and Symbols
Safety I n for m ation
Classification
The unit consists of an exposed metal chassis that is connected directly to earth via a power cord and, therefore, is classified as a Class 1 instrument. Class 1 refers to equipment relying on ground protection as a means of shock protection.
The following symbol is used to indicate a protective conductor terminal in the unit.
Disconnecting from Line Power
Some of the circuits are powered whenever the unit is connected to the AC power source (line power). To ensure that the unit is not connected to the line power, disconnect the power cord from either the power inlet on the unit’s rear panel or from the AC line-power source (receptacle). The power cord must always be accessible from one of these points. If the unit is installed in a cabinet, the operator must be able to disconnect the unit from the line power by the system’s line-power switch.
Line Power Require ments
The unit can operate from any single-phase AC power source that supplies between 100 and 240 V at a frequency range of 50 to 60 Hz. The maximum power consumption is 80 VA.
Fuse Type
The fuse type used by the unit is (5x20) mm, T1A / 250 V (slow).
Safety – 1
Safety I n str u ction s
The following safety instructions must be observed whenever the unit is operated, serviced, or repaired. Failure to comply with any of these instructions or with any precaution or warning contained in the user’s manual is in direct violation of the standards of design, manufacture, and intended use of the unit. JDS Uniphase assumes no liability for the cu stomer’s failure to comply with any of these safety requirements.
Before Initializing and Operating the Unit
Inspect the unit for any signs of damage, and read the user’s manual thoroughly.
Install the unit as specified in the Getting Started section.
Ensure that the unit and any devices o r cords connected to it are properly grounded.
Operating t he Unit
Warning
To avoid the risk of injury or death, always observe the following precautions before initializing the unit:
• If using a voltage-reducing autotransformer to power the unit, ensure that the common terminal connects to the earthed pole of the power source.
• Use only the type of power cord supplied with the unit.
• Connect the power cord only to a power outlet equipped with a protective
earth contact. Never connect to an extension cord that is not equipped with this feature.
• Willfully interrupting the protective earth connection is prohibited.
• Never look into the end of an optical cable connected to an optical output
device that is operating. Laser radiation is invisible, and direct exposure can severely injure the human eye. For more information, see the user’s manual of the laser source in use.
• Turning off the power to the device does not always block the externally supplied radiation to the connector at the output of the unit.
• Do not use the unit outdoors.
• To prevent potential fire or shock hazard, do not expose the unit to any
source of excessive moisture.
• Do not operate the unit when its covers or panels have been removed.
• Do not interrupt the protective earth grounding. Any such action can lead to
a potential shock hazard that can result in serious personal injury.
• Do not operate the unit if an interruption to the protective grounding is suspected. In this case, ensure that the unit remains inoperative.
• Use only the type of fuse specified by the manufacturer as appropriate for this unit. Do not use repaired fuses, and avoid any situations that can short-
Safety – 2
circuit the fuse.
• Unless absolutely necessary, do not attempt to adjust or perform any maintenance or repair procedure when the unit is opened and connected to a power source.
• Repairs are to be carried out only by a qualified professional.
• Do not attempt any adjustment, maintenance, or repair procedure to the
unit’s internal mechanism if immediate first aid is not accessible.
• Disconnect the power cord from the unit before adding or removing any components.
• Operating the unit in the presence of flammable gases or fumes is extremely hazardous.
• Do not perform any operating or maintenance procedure that is not described in the user’s manual.
• Some of the unit’s capacitors can be charged even when the unit is not connected to the power source.
Safety – 3
Safety Symbols
The following symbols and messages can be marked on the unit (Table 1). Observe all safety instructions that are associated with a symbol.
Table 1: Safety Symbols
Symbol
WARNING
CAUTION
Description
Laser safety. See the user’s manual for instructions on handling and operating the unit safely.
See the user’s manual for instructions on handling and operating the unit safely.
Electrostatic discharge (ESD). See the user’s manual for instructions on handling and operating the unit safely.
Frame or chassis terminal for electrical grounding within the unit.
Protective conductor terminal for electrical grounding to the earth.
The procedure can result in serious injury or loss of life if not carried out in proper compliance with all safety instructions. Ensure that all conditions necessary for safe handling and operation are met before proceeding.
The procedure can result in serious damage to or destruction of the unit if not carried out in compliance with all instructions for proper use. Ensure that all conditions necessary for safe handling and operation are met before proceeding.
Safety – 4
Compliance
CE Compliance
The unit has been designed and tested to comply with directive 73/23/EEC and its subsequent amendments by the European Community (EC or CE). The directive relates to electrical equipment designed for use within certain voltage limits. It ensures that electrical equipment is constructed with good engineering prac t ice in s a f ety matters.
The unit has been designed and tested to comply with directive 89/336/EEC, exclusive of the 1997 amendment. The directive relates to electromagnetic compatibility. It demands that electromagnetic disturbance does not exceed a prescribed level; that the equipment be immune to a prescribed level of ambient level of interference ; tha t the equipment be protected against electrostatic discharges; and that the equipment be immune to all electrical shock wave disturbances.
The requirements specified by directive 89/336/EEC are as follows. CE compliance requires that the manufacturer or its authorized representative established within the Community affix the EC conformity mark to the apparatus or else to the packaging, instructions for use, or guarantee certificate. The EC conformity mark shall consist of the letters CE as specified and the figures of the year in which the mark was affixed. This mark should, where appropriate, be accompanied by the distinctive letters used by the notified body issuing the EC type­examination certificate. Where the apparatus is the subject of other Directives providing for the EC conformity mark, the affixin g of the EC mar k shall also indicate c onformity with the relevant requirements of those other Directives.
Safety – 5
General Information and Specifications
General Information
This user’s manual for the SB Series Fiberoptic Switch contains complete operating instructions.
The SB Series 1xN programmable switches are designed to connect a single fiberoptic input channel to any of N (up to 48) output channels (Figure 1). The performance, configuration, flexibility, and portable enclosure are suitable for a wide range of applications, including fiberoptic component testing systems, remote fiber test systems in telecommunications, and research and development. Single-mode and multimode versions of the switches are available. The SB Series switche s are bidire ctional.
Figure 1: S B Sw itch
The SB switch connects the input to a selected output channel. The terminations are precisely aligned by a processor-controlled stepper motor. Collimating lenses terminate the fiberoptic attachments, minimizing the insertion loss of the switch and improving the repeatability and stability of its parameters.
The SB switch is equipped with IEEE 488.1 parallel and RS232 serial interfaces for remote operation. The switch also is operated manually using the front-panel controls. The switch status is displayed on the front-panel indicators.
The SB switch is available in single-common (SB-C) and dual-common (SB-D, SB-E, and SB­F) configurations. The dual-common units support two (paired) fiberoptic input channels.
Single-Common (SB-C) Switch Configuration
The common input channel (C) is connected to the output channel (1). The reset position (0) of the switch is an open circuit. This configuration is shown in Figure 2.
General Information and Specifications – 6
Figure 2: Single-Common Configuration
Dual-Common (SB-D) Switch Configuration
The D configuration provides simultaneous connection of a bank of inputs to outputs (Figure
3). The input A can be connected to 1A of 1B or …(N/2)A. In this dual-common configuration, channel connections are stepped in pairs. The channel displaye d is the current channel pair (A and B). The number of channel pairs is equal to one-half o f the total number of channels (N).
Figure 3: Dual-Common Configuration
Single Step Dual Common (SB-E) Switch Configuration
This non-blocking configuration allows any input to be connected to any output, but at the same time, adjacent inputs align with adjacent outputs (Figure 4). This configuration allows for single-step movement of paired input channels (A and B). The channel connection displayed is B path; A input channel is connected to B path minus one.
General Information and Specifications – 7
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