HP SB Series User's Manual
Contents
1. Address 23 GPIB Interface FUNCIONS ates sath sc 24 5232 Pin ASSIQNMOM a E 24 5232 Interface 5 2 24 RS232 Driver Pin ASSIQMIMOMNL ac 25 Operation and Query 25 Command Parser AUleS tees 25 Operation GOMMANGS 26 QUERY 27 Status Reporting and Service Request 29 Condition Register 29 Status Registe E EERE EE EE 29 SHG Mask 30 GPIB Programming Examples 2 30 Sending Command Sasserra 31 Serial Polling the Status Register 31 Generating a Service 5 32 Learn Query EEEE EREE 32 RS232 Programming 32 Sending Command Siess esp 33 33 Reading the S2. 8 Key 8 Application Sei e 8 Standard e ade aeae Eaa rieti a AE 8 Optional 550 66 esnie ae a pE ade 8 Specitications E E R 9 Getting Sla ic Sei tes calc eet ce es ese a eae eet cael daie 11 Before Initializing and Operating the 11 ISPS GOED Se cerca ae E E E 11 Operating 11 12 Tee ha Dstt eA ar Iva tes a ae nme 12 57219 U1 F211 p Ce Dea Ore 12 ANC SHIPPING 12 Claims 12 Returning Shipments to JDS Uniphase 12 Cleaning RS aa 13 installing 14 Operating and Maintenance Instructions 15 Front ANG aims 15 Opefating 15
3. j k Programming Guide 26 XDRS i Drivers Control Sets all eight relay drivers according to the binary conversion of i The binary weight of the drivers is as follows e Driver 1 1 e Driver 2 2 e Driver 3 4 e Driver4 8 e Driver5 16 e Driver 6 32 e Driver 7 64 e Driver 8 128 Add together the weights of the drivers to be activated and send the total For example when i 255 all eight relay drivers are turned on SQR Mask Writes a decimal number to the SRQ mask register see the Status Reporting and Service Request Control section Setting a bit to 1 generates an SRQ interrupt when the corresponding bit in the status register changes from 0 to 1 CSB Clear Status Byte Resets the status byte CLR Clear Device Clears the SRQ mask register and the status register Query Commands CLOSE Optical Switch Path Returns the current optical path number If the switch has two common input fibers A and B CLOSE returns the position of fiber B CLOSE MAX returns the maximum channel number XDR i Driver Returns the state of an external relay driver i 0 relay driver is off 1 relay driver is on Programming Guide 27 XDRS Drivers Returns the states of all drivers in a binary coded integer LRN Learn Returns a string containing three commands that if sent reset the switch to its current state for example CLOSE i XDRS k SRE where i represents the current path numb
4. for driving the external switch modules and four drivers drivers 5 6 7 and 8 for driving internal switch modules in custom Operating and Maintenance Instructions 19 applications All drivers are controlled by remote commands use the Driver port at the back of the switch Driver 1 can also be controlled locally by the Driver 1 key To control driver 1 locally 1 Press the Driver 1 key to toggle driver 1 on and off for manual control The status LED of the key is lit when on Controlling the Switch Locally To operate the switch using the front panel 1 2 If the REM status LED is lit press the Local key once to set the SB switch to Local mode Press the A or W key to select the switch position required In SB E configurations the display shows the common B switch position Common A is set to the display reading minus one To toggle external relay driver 1 press the Driver 1 key This driver can be used to operate a 1x2 source select switch The status LED key is lit when on Controlling the Switch Remotely by GPIB Interface To control the switch by GPIB interface 1 Connect a user supplied GPIB cable to the controlling computer and to the IEEE 488 GPIB port at the back of the switch Verify that the interface command set is set to SB and that the GPIB address is set to 7 To do this turn the SB switch off and then on again The display reads SB when set to SB mode See the Setting the Interface Comm
5. for example SB SC or SX 3 Press the GPIB ADDR key to save the setting SC Series Switch Command Set SCXXX 0XXX Models The syntax and functions for the SC series switch commands are provided in Table 12 Table 12 SC Switch Command Set Syntax Funetion AnE switch to channel n verify channel turn external driver on turn external driver off Response messages Table 13 are formatted as qn where q is the switch status A normal syntax error C calibration error and n is the channel number Table 13 Response Messages for SC Switch Commands Status Byte Register eee ee ee ee fo o om SX Series Switch Command Set The syntax and functions for the SX Series switch commands are provided in Table 14 Programming Guide 34 Table 14 SX Switch Command Set switch to channel n set driver configure drivers with binary code k enable unit to assert SRQ interrupt after completing each command disable SRQ interrupt except when an error occurs remote mode lock out front panel keys not implemented in SB switch RS232 only local mode enable front panel keys not implemented in SB switch RS232 only Response messages Table 15 are formatted as qn Rm where q is the unit status A normal C command error 5 system error 16 the channel number 0 to N R is the letter R and m is the state of the external relay drivers 0 to 255 Table 15
6. 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 WON 0 open channel reset position Figure 4 Single Step Dual Common Configuration Dual Common Blocking SB F Switch Configuration This configuration allows one of the inputs to be aligned with an output in a blocking sense with reduced output channel counts available Figure 5 O open 0 open i no connection 2 no connection N 0 open channel reset position Figure 5 Dual Common Blocking Configuration Key Features Up to 48 channels Typical insertion loss 0 4 dB Typical repeatability 0 003 dB Typical return loss 65 dB Local control and remote control via IEEE 488 and 5232 interfaces Applications e Remote fiber test systems in telecommunication networks e Fiberoptic component testing e Transmitter receiver measurement e Research and development Standard Accessories e AC power cord e Users manual Optional Accessories e Rack mount kit General Information and Specifications 8 Specifications The following optical specifications describe the warranted characteristics of the unit Table 2 Supplementary specifications describe the typical non warranted performance of the unit Table 3 and Table 4 Table 2 Optical Specifications Insertion loss single mode 0 4 dB mul
7. Capable of emulating command set of JDS Uniphase SC 0 and SX 0 Series switch models Drivers Eight open collector outputs sink current 100 mA maximum per output driver e Drivers 1 2 3 4 5V and GND ground are accessible from back panel connector e Drivers 5 6 7 and 8 are internal e Driver 1 can also be controlled from the DRIVER1 key on the front panel Warm up time 1 hour at 25 C ambient temperature Applicable for optimum repeatability performance Table 4 Other Specifications Input voltage 100 to 240 V AC 50 to 60 Hz Power consumption 80 VA maximum Physical Dimensions W x H x D standard 21 2 x 8 9 x 35 5 cm with rack mount 48 3 x 8 9 x 35 5 cm Weight 3 75 kg Environmental Operating temperature 55 C Storage temperature 40 to 70 C Humidity maximum 95 RH from 0 to 55 C Rack mount kit is optional General Information and Specifications 10 Getting Started The SB Series Fiberoptic Switch consists of the switch unit and an AC power cord The rack mount kit is optional Before Initializing and Operating the Unit Inspect the unit for any signs of damage Read the users manual thoroughly and become familiar with all safety symbols and instructions to ensure that the unit is operated and maintained safely Initial Inspection Warning To avoid electrical shock do not initialize or operate the unit if it bears any sign of damage to any po
8. Sending Commands This example sets the SB switch to channel 6 and turns on all the external relay drivers set up the interface card and drivers OPEN GPIBO FOR OUTPUT AS 1 OPEN GPIBO FOR INPUT AS 2 PRINT 1 ABORT set terminating character to CR LF sequence PRINT 1 GPIBEOS OUT CR LF PRINT 1 GPIBEOS IN CR LF sample commands close 6 xdrs 255 PRINT 1 OUTPUT 07 CLOSE 6 XDRS 255 sample queries PRINT 1 OUTPUT 07 CLOSE PRINT 1 ENTER 07 INPUT 2 a PRINT channel PRINT 1 OUTPUT 07 XDRS PRINT 1 ENTER 07 INPUT 2 a PRINT driver state a END Serial Polling the Status Register This example changes the channel setting and reads the status register continuously until the output has settled PRINT 1 OUTPUT 07 csb clearing the status byte clears the settling bit PRINT 1 OUTPUT 07 CLOSE 12 change channel sr 0 initialize sr variable to enter the while loop WHILE sr AND 4 0 loop until settled bit is true PRINT 1 SPOLL 07 serial poll SB switch INPUT 2 sr 3 National Instruments is a trademark of National Instruments Hewlett Packard is a registered trademark of Hewlett Packard Co Programming Guide 31 WEND PRINT sr print final value of sr END Generating a Service Request Interrupt This example tests the service request interrupt function It unmasks the settled bit in the SRQ mask register and selects a channel An interrupt
9. Status 15 Pear Rane li 16 External Switch Module 16 External Switch Module without TTL Input 16 External Switch Module with TTL Input 17 50000153 Rev J May 2000 Sample Driver Application Electrical Equivalent of 17 Powering Up the Switch 18 Using and Selecting a Channel ss 18 19 Setting the Interface Command Set for SC and SX 19 CONFOUND ONS ra cee eae 19 Controlling the Switch Locally 20 Controlling the Switch Remotely by GPIB Interface 20 Controlling the Switch Remotely by RS232 20 Calibrating the 52754 53 00 8 085 Le 21 Maint ining the addenda Son 21 Programming 0 eee eee ee ee eed 23 GPIB PInsASSIQNIMOM dnc E 23 Setting
10. 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 Laser safety See the user s manual for instructions on handling and operating J the unit safely A See the users manual for instructions on handling and operating the unit safely Electrostatic discharge ESD See the users manual for instructions on A 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
11. 4 Figure 10 Switch Setup with TTL Sample Driver Application Electrical Equivalent of Driver A sample driver application is shown in Figure 11 Operating and Maintenance Instructions 17 inside SB switch connector 5V 5V driver 1 driver 4 Figure 11 Sample Driver Application Electrical Equivalent of Driver Caution Do not exceed 100 mA per driver Powering Up the Switch To power up the switch 1 Connect the switch to the AC power source with the AC power cord provided 2 Set the power switch to 1 on to initialize the SB switch All key lamps and status LEDs light If no malfunction is detected during power up all lamps and LEDs turn off and the display reads 0 Using and Selecting a Channel To use the switch 1 Connect a channel to the front of the switch Figure 12 DRIVER 1 GPIB LOCAL Figure 12 Using a Channel Operating and Maintenance Instructions 18 To select a channel 1 Press the A or W key to scroll to the channel number required The switch mechanism advances to the channel when the key is released In SB C models SB1CXXXXX 2XXXXXXXxX the channel number displayed is the current channel number connected to the common fiber C the switch has one common fiber In the SB D models SB2DXXXXX 2XXXXXXXxX the channel number displayed is the current channel pair the switch has two common fibers In the SB E models SB2EXXXXX 2XXXXXXXX the channel numbe
12. Response Messages for SX Switch Commands BUSY 1 BAD DATA 1 UNIT FAILURE These bits are usually set to 0 Bit 6 RQS is set to 1 when the SB switch generates a service request interrupt Bit Bito fee po fof 1 nom EAT ee ee Programming Guide 35
13. SB SERIES FIBEROPTIC SWITCH User s Manual JDS Uniphase Contents Safety Information Instructions 1 Hae reteset ated ia 1 ClASSIICANOM a 1 Disconnecting from Line 1 Line Power Requirements 1 Fase 1 MUCH ONG 2 Before Initializing Operating the 2 Operating the Unit tae Wann haley dangle 2 Safety cna te 4 COMPIIANCE 2 1 5 atures 5 General Information 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 7 Dual Common Blocking SB F Switch
14. allel interface and an RS232C serial interface The switch accepts the same device dependent commands commands that control the instrument over either interface The SB switch can be set to emulate the interface command sets status reporting and service request control of the SC Series and SX Series switches The active interface command set is displayed when the switch is powered on See the Setting the Interface Command Set section for instructions on changing the interface command set GPIB Pin Assignment The GPIB pin assignment is shown in Figure 14 p2H AH IOH HeH HEH SH4H 3H 2H 1 3 Figure 14 GPIB Pin Assignment Caution Tighten the connector lock screws by hand Do not use a screwdriver Setting the GPIB Address To display or edit the GPIB interface address 1 Press the GPIB ADDR key to set the switch to GPIB mode The current GPIB address is displayed The factory set GPIB address is 7 2 change the address press the A or W key to scroll to the required address Programming Guide 23 3 Press the GPIB ADDR key The new address is activated and stored To leave the GPIB address unchanged press the Driver 1 key GPIB Interface Functions The GPIB interface functions are listed in Table 7 Table 7 GPIB Interface Functions Fonon repo RS232 Pin Assignment The RS232 pin assignment is shown in Figur
15. and Set section for instructions on changing the interface command set At the computer that controls the GPIB set the message terminating character sequence to carriage return and line feed lt CR gt lt LF gt for example ASCII character code 13 10 The lt CR gt lt LF gt characters must be appended to the end of any messages sent to the SB switch Similarly the switch appends these characters to all messages it returns Send a sample command to the SB switch for example use an OUTPUT statement or equivalent to send the command CLOSE 10 at GPIB address 7 The channel setting changes to 10 Most programming languages automatically append the terminating sequence to the message Send a sample query command for example CLOSE then use an INPUT statement to receive the message 10 from GPIB address 7 Controlling the Switch Remotely by RS232 Interface To control the switch by RS232 interface 1 Connect an RS232 cable to the RS232C port of the SB switch and to a computer Operating and Maintenance Instructions 20 2 At the computer initialize the serial port to 1200 baud eight bit ASCII character code one stop bit and no parity Use the following MS DOS Qbasic program as an example OPEN COM2 1200 N 8 1 FOR RANDOM AS 1 PRINT 1 CLOSE 5 PRINT 1 CLOSE INPUT 1 A PRINT A END Calibrating the Switch No calibration is required Maintaining the Switch Clean the connector ends with a lint f
16. before proceeding CAUTION 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 practice in safety 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 that 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 le
17. e 15 Figure 15 RS232 Pin Assignment RS232 Interface Specifications Table 8 lists the RS232 interface specifications Programming Guide 24 Table 8 RS232 Interface Specifications Fequestioserd ars 8 an cata om 6 ow o The data protocol is permanently set to 1200 baud ASCII character code with eight bits character one stop bit and no parity bit The serial port of the controlling computer must be configured with the same settings RS232 Driver Pin Assignment The RS232 driver pin assignment is shown in Figure 16 5 DRIVER 3 DRIVER 4 DRIVER 2 Figure 16 Driver Pin Assignment Caution Do not exceed 100 mA per driver Operation and Query Commands Operation and query commands control instrument functions and are interface independent Command Parser Rules A command consists of a mnemonic for example CLOSE and if required data parameter The mnemonic and the data parameter must be separated by at least one space e Parameters can be entered in various formats for example 10 10 0 and 1 0e1 are all recognized as the same value Commands be sent in uppercase or lowercase characters Programming Guide 25 A command is contained a message and messages can contain more than one command each one separated by a semicolon For example CLOSE 6 XDR 2 1 lt CR gt lt LF gt contains two commands e All GPIB comma
18. ement key Status LEDs The status LEDs are described in Table 6 Operating and Maintenance Instructions 15 Table 6 Status LEDs REM Indicates that the GPIB or RS232 interface is in Remote mode All front panel keys except Local are locked out LOCK Indicates that the SB switch is in Local Lockout mode This mode prevents the Local key from returning the SB switch to Local mode ADDR Indicates that the GPIB interface is in talk or listen state SRQ Indicates that the interrupt logic of the SB switch has generated a service request interrupt on the GPIB interface Rear Panel The back of the switch is shown in Figure 8 RS232C R 89 8 as 100 240 V A 80 VA max Soo Been aoa NO OPERATOR SERVICEABLE PARTS INSIDE x WARNING REFER SERVICE TO SERVICE TRAINED PERSONNEL optional fiber cable exit Figure 8 Back of the Switch External Switch Module Connections External Switch Module without TTL Input Controls The setup for a switch without transistor to transistor logic TTL is shown in Figure 9 Operating and Maintenance Instructions 16 driver connector external switch external switch module 1 module 4 driver 1 driver 2 driver 3 driver 4 Figure 9 Switch Setup without TTL External Switch Module with TTL Input Controls The setup for a switch with TTL is shown in Figure 10 driver connector external switch module 1 external switch module
19. er k represents the states of the external drivers and represents the value of the service request gt D a n 5 STB Status Register Returns a three digit integer and automatically clears the status register if the SRQ bit is set SRE SRQ Mask Returns the contents of the SRQ mask register CNB Condition Register Returns the contents of the condition register TST Self Test Executes a self test operation An error code that can be queried with ERR or LERR is placed in an error queue The query TST also sets bit 7 in the status register 0 self test passed 1 self test failed ERR Error Number Returns an error number if the self test fails 330 self test failed 0 self test did not fail LERR Last Number Error Returns a three digit error number from the error queue The queue can contain as many as five error numbers The first error read is the last error that occurred LERR returns 000 if the error queue is empty Programming Guide 28 Operation Complete Returns the status of the input buffer e 1 the input buffer is empty for example all commands have been executed e 0 the input buffer is not empty for example commands are still pending Returns a string that identifies the manufacturer the switch series and the firmware level for example JDS Uniphase SB Switch 2 00 Status Reporting and Service Request Control The SB switch maintains three e
20. hen a message is available in the output buffer e Bit 2 settled is set when bit 2 in the condition register changes from 0 to 1 e Bit 0 parameter error is set when a parameter value is out of the range of the SB switch The status register can be read with the status register query STB or by serial polling the GPIB interface During power up the status register contains 0 and can only be read by serial polling After initial power up only the settled bit bit 2 is set to 1 The clear status byte command CSB and the clear device command CLR clear the status register STB also clears the status register but only if the service request bit bit 6 is set to 1 SRQ Mask Register The SRQ mask register unmasks specific events in the status register that generate service request interrupt on the GPIB interface Table 11 The SRQ mask command SRE writes to the SRQ mask register When a bit in the SRQ mask register is set to 1 the interrupt logic of the switch monitors the corresponding event bit in the status register When a bit changes from 0 to 1 a service request interrupt is generated and bit 6 in the status register is set Table 11 SRQ Mask Register SRQ Mask Register self test n a syntax message n a settled n a parameter error error available error The SRQ mask register can unmask more than one event at a time The first unmasked event to change from 0 to 1 causes an interrupt To acknowledge this
21. ight bit registers that are used for status reporting and for enabling the GPIB service request interrupt e Condition register e Status register e mask register Condition Register The condition register monitors the current state of the switch mechanism Table 9 Bit 2 the settled condition bit is 1 when the switch mechanism has stopped at the desired channel and 0 when the switch is moving to a new output channel The CNB query command returns the value of the condition register When the settled bit is true CNB query returns 4 Table 9 Condition Register Condition Register Status Register The status register records errors and other events that have occurred in the switch Table 10 When an event occurs the switch status logic sets the corresponding bit to 1 The status register can be read at any time because the bits stay set until the register is read at least once Table 10 Status Register Programming Guide 29 error request error available 1 e Bit 7 self test error is set if a calibration error is detected after power up or after the self test query TST is executed At all other times it is 0 e Bit 6 Service request is set when the interrupt request logic of the switch detects a reason to generate a service request interrupt on the GPIB interface e Bit 5 syntax error is set when the parser detects a syntax error in a command mnemonic e Bit 4 message available is set w
22. interrupt the GPIB interface can be serial polled or the status register can be read with STB The first time the SB switch is serial polled after an SRQ is generated bit 6 is on Subsequent serial polling returns a value with bit 6 off Similarly STB returns the status register with the SRQ bit set but then the switch logic automatically clears the register As a result subsequent STB queries return 0 The SRQ mask register is cleared by powering up the SB switch by the clear device command CLR or by the universal device clear command DC1 GPIB Programming Examples This section provides programming samples for controlling the SB switch over the GPIB interface The samples were written in MS DOS Qbasic and run on a personal computer Programming Guide 30 equipped with a National Instruments GPIB interface board with National Instruments Universal Language Interface drivers loaded The commands that control the GPIB are similar to Hewlett Packard HP Basic commands Most other controller board manufacturers provide basic output and input statements for communicating messages to a GPIB instrument Before using any of these samples ensure that the GPIB address is set to 7 the interface command set is SB the ULI EXE driver is loaded and the switch is connected to the computer via a GPIB cable The GPIB commands provided in this section do not always show the terminating sequence lt CR gt lt LF gt however it is implied
23. ipped 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 SB F 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 1 2 c N 0 open channel reset position 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 displayed is the current channel pair A and B The number of channel pairs is equal to one half of the total number of channels N 0 open channel reset position 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
24. is generated when the switch reaches the channel ON PEN GOSUB SPOLL enable SRQ interrupt PEN ON PRINT 1 OUTPUT 07 CSB SRE 4 clear status register and unmask settled bit in SRQ mask register PRINT 1 OUTPUT 07 CLOSE 6 change channel More code executed while switch channel set WHILE endless loop to simulate bigger program WEND ends when any key is pressed PEN OFF END SPOLL PRINT 1 SPOLL 07 serial poll the switch INPUT 2 sr read status register PRINT sr verify SRQ bit is set PRINT 1 SPOLL 07 serial poll again to verify SRQ bit is now cleared INPUT 2 sr read status register PRINT sr RETURN Learn Query LRN This example demonstrates the use of the learn query 1 00 PRINT 1 OUTPUT 07 LRN send the learn query command PRINT 1 ENTER 07 LINE INPUT 2 LEARN above variables can be saved in a data file before quitting the program and then later read back and used to restore the switch to a same state Like this PRINT 1 OUTPUT 07 LEARN SB settings are now restored END RS232 Programming Examples This section provides programming examples for controlling the SB switch over the RS232 interface The examples were written in MS DOS Qbasic and run on a personal computer Programming Guide 32 equipped with a serial port COM port 2 of the computer is designated as the serial port and is connected to the sw
25. itch Before using any of these examples ensure that the active interface command set is SB The RS232 interface cannot receive an SRQ interrupt The RS232C commands that appear in this section do not always show the terminating character lt CR gt however it is implied Sending Commands OPEN COM2 1200 N 8 1 FOR RANDOM AS 3 10 PRINT 3 CLOSE PRINT 3 XDRS 255 END Querying Status This example queries and displays the current channel setting PRINT 3 CLOSE INPUT 3 A PRINT A END Reading the Status Register The serial polling function is not supported RS232 interface but STB can be used to query the status register since the query command performs the same function as serial polling This example changes the channel setting and reads the status register continuously until the output has settled OPEN COM2 1200 N 8 1 FOR RANDOM AS 3 PRINT 3 CSB clear status register PRINT 8 CLOSE 5 DO loop until motor settles PRINT 8 STB INPUT 3 SR1 LOOP UNTIL SR1 AND 4 PRINT SR1 END Setting the Interface Command Set The SB switch can be set to emulate the interface command sets of earlier models of JDS Uniphase SC Series and SX Series switches Programming Guide 33 To change the command set 1 Press and hold the GPIB ADDR key while the SB switch powers up The active interface setting is displayed 2 Press the A key to scroll to the required command set
26. llow for the repair or replacement of the unit while a claim against the carrier is being processed Returning Shipments to JDS Uniphase JDS Uniphase only accepts returns for which an approved Return Material Authorization RMA has been issued by JDS Uniphase sales personnel This number must be obtained prior to shipping any material to JDS Uniphase The owner s name and address the model number and full serial number of the unit the RMA number and an itemized statement of claimed defects must be included with the return material Getting Started 12 Ship return material in the original shipping container and packing material If these are not available packaging guidelines are as follows 1 2 9 Wear an anti static wrist strap and work in an ESD controlled area Cover the front panel with a strip of cardboard Wrap the unit in anti static packaging Use anti static connector covers if applicable Pack the unit in a reliable shipping container Use enough shock absorbing material 10 to 15 cm or 4 to 6 in on all sides to cushion the unit and prevent it from moving inside the container Pink poly anti static foam is the best material Seal the shipping container securely Clearly mark FRAGILE on its surface Always provide the model and serial number of the unit and if necessary the RMA number on any accompanying documentation Ship the unit only to the address given at the beginning of this document Cleani
27. nds must end with the terminating sequence lt CR gt lt LF gt e All 5232 commands must be terminated with a single lt CR gt character e The input buffer of the switch can hold as many as 100 characters If the buffer becomes full the switch holds the handshaking line on the GPIB interface until space is available Similarly over the RS232 interface the switch sets the Clear To Send line low Any characters received after the line goes low are ignored Commands are executed as they are parsed consequently a command can be executed before the entire message in which it is contained is received e The switch delays accepting new characters sent over the GPIB interface while the switch mechanism is moving but no data are lost The SB switch is always ready to accept characters over the RS232 interface A query command is used to extract status information from the switch For example SRE lt CR gt lt LF gt returns the contents of the status register Multiple command messages can contain only one query command A query must be the last command in the message for example CLOSE 20 XDRS lt CR gt lt LF gt Operation Commands RESET Reset Returns the switch to the power up state for example channel 0 relay drivers off CLOSE i Set Optical Channel Closes the optical path represented by the integer i XDRik Driver Control Sets the specified external driver on or off driver number 1 to 8 1 on 0 off
28. nect the unit from the line power by the system s line power switch Disconnecting from Line Power Line Power Requirements 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 Instructions 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 customer 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 or cords connected to it are properly grounded Operating the 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
29. nector 6 With the other end of the pipe cleaner or swab dry the areas cleaned 7 Using the dusting gas or compressed air blow the areas cleaned Installing the Switch Warning In sensitive applications to avoid shock and vibration do not mount the switch in non rigid racks or on top of raised floors or tables Avoid use with high impact doors that lack impact reducing bumpers upon closing To install the switch 1 Place the SB switch into its intended operating location 2 Avoid blocking the ventilation holes at the back and at the bottom of the instrument 3 Do not pull on the fibers exiting through the rear panel strain relief Excessive force can damage the optics 4 Route the fiber cables in such a way as to avoid creating bends that have a radius of less than 1 5cm do not lay cables across sharp corners or tie bundles of cables together tightly 5 Reattach the AC power cord and reinitialize the switch Getting Started 14 Operating and Maintenance Instructions Front Panel The front of the switch is shown in Figure 7 DRIVER 1 GPIB LOCAL optional connector panel Figure 7 Front of the Switch Operating Keys The operating keys are described in Table 5 Table 5 Operating Keys Turns the power on I and off O Toggles driver 1 on and off Sets the switch to GPIB Address IEEE 488 1 mode Returns the switch to Local mode from Remote mode Channel increment key Channel decr
30. ng Connectors Caution e Connecting damaged or dirty fibers to the unit can damage the connectors on the unit e Never force an optical connector Some connectors have a ceramic ferrule that can easily be broken Optical cable ends need to be cleaned before using them with the unit The following items are required for cleaning Filtered compressed air or dusting gas for example Tech Spray Envi Ro Tech Duster 1671 gas available from http www techspray com 1671 htm Lint free pipe cleaners for example from or lint free swab Lint free towels for example 10 x 10 cm or 4 x 4 in HydroSorb IIl wipers available from http www focenter com acctech hydrosobr_wipers htm Optical grade isopropyl alcohol or optical grade 200 ethanol do not use rubbing alcohol which contains 30 water To clean the connectors is a trademark of Getting Started 13 1 Blow the sleeve with filtered compressed air Figure 6 sleeve ferrule Figure 6 Connector Cleaning connector type can vary 2 Apply optical grade isopropyl alcohol or optical grade ethanol do not use rubbing alcohol to a small area of a lint free towel and rub the end of the ferrule over the wet area 3 Wipe the ferrule on a dry area of the lint free towel 4 Using the dusting gas or compressed air blow the end of the ferrule 5 Apply the alcohol or ethanol to a lint free pipe cleaner or swab and wipe off the remaining parts of the con
31. o 55 C Humidity The unit can be operated in environments with up to 95 humidity 0 to 55 C Do not expose it to any environmental conditions or changes to environmental conditions that can cause condensation to form inside the unit Ventilation The unit contains a built in cooling fan Do not install it in any location where the ventilation is blocked For optimum performance the unit must be operated from a location that provides at least 75 mm 3 inches of clearance at the rear and at least 25 mm 1 inch of clearance at the bottom Blocking the air circulation around the unit can cause the unit to overheat compromising its reliability Warning e Do not use the unit outdoors e To prevent potential fire or shock hazard do not expose the unit to any source of excessive moisture Storing and Shipping To maintain optimum operating reliability do not store the unit in locations where the temperature falls below 40 C or rises above 70 C Avoid any environmental condition that can result in internal condensation Ensure that these temperature and humidity requirements can also be met whenever the unit is shipped Claims and Repackaging Immediately inform JDS Uniphase and if necessary the carrier if e The contents of the shipment are incomplete e The unit or any of its components are damaged or defective e The unit does not pass the initial inspection In the event of carrier responsibility JDS Uniphase will a
32. r displayed is the channel connected to the common fiber B The channel connected to the common fiber A is B 1 the switch has two common fibers In SB F models SB2FXXXXX 2XXXXXXXxX the channel number displayed is the channel connected to the common fiber B A blocked connection with B shows as an even numbered channel and the connected channels with B show as odd numbered The path connected to common fiber A is B 1 In all configurations channel 0 is an open circuit that is the switch is in an unconnected state Setting the GPIB Address Set the SB switch to GPIB mode to display and edit the GPIB address 1 Press the GPIB ADDR key The current GPIB address is displayed 2 To change the address press the A W key to scroll to the required address 3 Press the GPIB ADDR key to store the new address Or to exit GPIB mode without changing the address press the DRIVER 1 key Setting the Interface Command Set for SC and SX Switches The SB switch can be set to emulate the interface command sets of earlier models of JDS Uniphase SC Series and SX Series switches To set the interface command set 1 Press and hold the GPIB ADDR key while the SB switch powers up The active interface command set is displayed 2 Press the A key to scroll to the required command set for example SB SC or SX 3 Press the GPIB ADDR key to save the setting Controlling the Drivers The SB switch has four drivers drivers 1 2 3 and 4
33. ree tissue and alcohol before every mating See the Cleaning Connectors section Clean the internal connectors and the panel mounted connector bulkheads periodically or when high losses are suspected The internal connectors can be accessed by removing the connector panel 1 Remove the retaining screws of the connector panel 2 Slowly pull the panel out to the full extent of its guide rails Figure 13 A IDS Uniphase SB SERIES FIBEROPTIC SWITCH REMO unscrew panel and pull out gently Figure 13 Removing the Connector Panel 3 Remove the connectors from the connector bulkheads 4 Clean the connector ends and the bulkhead mating sleeves with a lint free tissue and alcohol 5 Reinstall the connectors into the bulkheads MS DOS is a registered trademark of Microsoft Corporation Operating and Maintenance Instructions 21 6 Reinstall the connector panel guiding the fibers back to ensure that they do not bend sharply Operating and Maintenance Instructions 22 Programming Guide The following programming instructions for the SB switch are intended for users who are familiar with the GPIB interface and how to send or receive messages over a device A detailed description of the GPIB interface is contained in ANSIIEEE Std 488 1 1987 IEEE Standard Digital Interface for Programmable Instrumentation published by the Institute of Electrical and Electronics Engineers The SB switch is equipped with a GPIB par
34. rtion of its exterior surface such as the outer cover or panels Check that the unit and contents are complete 1 Wear an anti static wrist strap and work in an electrostatic discharge ESD controlled area 2 Inspect the shipping container for any indication of excessive shock to the contents and inspect the contents to ensure that the shipment is complete 3 Inspect the unit for structural damage that can have occurred during shipping 4 Connect the unit to a power source using the AC power cord provided 5 Set the power switch to I on to initialize the SB switch All key lamps and status LEDs light If no malfunction is detected during power up all lamps and LEDs turn off and the display reads 0 If a malfunction is detected during the power up sequence an error message is displayed 6 Set the power switch to O off and disconnect the AC power cord from the power supply and from the unit 7 Keep the packaging Immediately inform JDS Uniphase and if necessary the carrier if the contents of the shipment are incomplete if the unit or any of its components are damaged or defective or if the unit does not pass the initial inspection Operating Environment In order for the unit to meet the warranted specifications the operating environment must meet the following conditions for temperature humidity and ventilation Getting Started 11 Temperature The unit can be operated in the temperature range of 0 t
35. tatus 33 Setting the Interface Command 33 SC Series Switch Command Set 5 34 SX Series Switch Command 34 50000153 Rev J May 2000 D000153 Rev J For sales and service information contact JDS Uniphase or your local representative JDS Uniphase Corporation 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 May 2000 Safety Information Instructions and Symbols Safety Information 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 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 discon
36. timode 0 3 dB Return loss single mode standard analog 65 dB gt 65 dB 60 dB 65 minimum multimode standard analog 25 dB 35 dB 20 dB 30 dB minimum Polarization dependent loss single mode 0 02 dB 0 05 dB Insertion loss stability 0 03 dB 0 05 dB Repeatability sequential switching random switching Crosstalk single mode 100 dB 80 dB Input power continuous wave 300 mW Channel options front panel FC or ST connectors 20 maximum front panel SC connectors 24 maximum 5 m rear panel pigtail 48 maximum Switching time one channel 300 ms typical each additional channel 12 ms typical Insertion loss does not include connectors Include 0 2 dB typical 0 5 dB maximum for each connector Excluding connectors Values shown for 62 5 um diameter maximum fiber core Drift of any channel relative to one assigned reference channel at 3 C deviation of ambient temperature over a seven day period Optimum repeatability after one hour warm up N N General Information and Specifications 9 Table 3 Operating Specifications Local control Step up step down channel selection Control of one external relay driver IEEE 488 1 address selection Return to local function Language selection Remote GPIB interface control IEEE 488 1 1987 capability SH1 AH1 T6 L4 SR1 PPO DC1 CO E1 RS232 interface setting 8 bits 1200 baud 1 stop bit no parity Command set Revised command set
37. tters 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 type examination certificate Where the apparatus is the subject of other Directives providing for the EC conformity mark the affixing of the EC mark shall also indicate conformity with the relevant requirements of those other Directives Safety 5 General Information and Specifications General Information This users 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 switches are bidirectional Figure 1 SB Switch 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 equ
38. 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
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