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Related Manuals for JDS Uniphase SCG Series
Summary of Contents for JDS Uniphase SCG Series
- Page 1 SCG SERIES FIBEROPTIC SWITCH User’s Manual...
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Page 2: Table Of Contents
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.................... - Page 3 RS232C Programming Examples ................... 33 Sending Commands .................... 34 Querying Status....................34 Reading the Status Register ................34 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...
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Page 4: Safety Information, Instructions, And Symbols
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. -
Page 5: Safety Instructions
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. -
Page 6: Safety Symbols
• 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. -
Page 7: Compliance
Symbol Description WARNING 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 CAUTION carried out in compliance with all instructions for proper use. -
Page 8: Ce 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. -
Page 9: General Information And Specifications
This user’s manual for the SCG Series Fiberoptic Switch contains complete operating instructions. The SCG Series Fiberoptic Switch is a programmable switch (Figure 1) that aligns multiple inputs with multiple outputs. Performance, configuration, and flexibility are suitable for a wide range of applications, including fiberoptic component testing systems, remote fiber test systems in telecommunications, and research and development. -
Page 10: Multiple-Common (Scg-D) Switch Configuration
Multiple-Common (SCG-D) Switch Configuration The multiple-common (SCG-D) switch configuration provides simultaneous connection of a bank of inputs to outputs (Figure 2). Input 1 can be connected to 1-1 or any 1-M/N output. In this configuration, channel connections are stepped by groups. The number of states is equal to the number of output channels divided by the number of input channels. -
Page 11: Multiple-Common Blocking (Scg-F) Switch Configuration
Multiple-Common Blocking (SCG-F) Switch Configuration In the multiple-common blocking (SCG-F) configuration, any input can be aligned to any output, and the inputs not used are blocked (Figure 4). Figure 4: Multiple-Common Blocking Configuration for MxN Channels Key Features • Up to 180 channels •... -
Page 12: Specifications
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 Parameter Typical Maximum SCG-D SCG-E SCG-D SCG-E SCG-F SCG-F Insertion loss... - Page 13 Table 3: Operating Specifications Parameter Description Local control • Step-up, step-down channel selection • Control of eight relay drivers • IEEE 488.1 address selection • Return-to-local function • Language selection Remote control • GPIB interface: IEEE 488.1 1987 capability SH1, AH1, T6, L4, SR1, PP0, DC1, C0, E1 •...
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Page 14: Getting Started
Getting Started The SCG Series Fiberoptic Switch consists of the rack-mounted switch unit and a power cord. Before Initializing and Operating the Unit Inspect the unit for any signs of damage. Read the user’s manual thoroughly, and become familiar with all safety symbols and instructions to ensure that the unit is operated and maintained safely. -
Page 15: Operating Environment
• The unit does not pass the initial inspection In the event of carrier responsibility, JDS Uniphase will allow 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. -
Page 16: Cleaning Connectors
full serial number of the unit, the RMA number, and an itemized statement of claimed defects must be included with the return material. Ship return material in the original shipping container and packing material. If these are not available, packaging guidelines are as follows: 1. -
Page 17: Installing The Switch
To clean the connectors: 1. Blow the sleeve with filtered compressed air (Figure 5). Figure 5: 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. -
Page 18: Operating And Maintenance Instructions
Operating and Maintenance Instructions Front Panel The front of the unit is shown in Figure 6. A close-up of the key panel is shown in Figure 7. Figure 6: Front of Switch Figure 7: Operating Keys and Status LEDs Operating and Maintenance Instructions – 15... -
Page 19: Operating Keys
Operating Keys The operating keys are described in Table 5. Table 5: Operating Keys Description I / O Power on (I) and off (O) switch GPIB ADDR Sets the switch to GPIB Address (IEEE 488.1) mode LOCAL Returns the switch to Local mode from Remote mode, unless the switch is in Local Lockout mode RELAY Sets the switch to Relay (driver control) mode... -
Page 20: Rear Panel
Rear Panel The back of the unit is shown in Figure 8. Figure 8: Back of Switch Making 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. Figure 9: Switch Setup without TTL Operating and Maintenance Instructions –... -
Page 21: External Switch Module With Ttl Input Controls
External Switch Module with TTL Input Controls The setup for a switch with TTL is shown in Figure 10. Figure 10: Switch Setup with TTL Sample Driver Application A sample driver application, which is the electrical equivalent of the driver, is shown in Figure inside SC switch connector clamp... -
Page 22: Powering Up The Unit
Powering Up the Unit To power up the unit: 1. Connect the unit to the AC power source, with the AC power cord provided. 2. Set the power switch to (on). All key lamps and status LEDs light during the power-up sequence. -
Page 23: Saving And Recalling Switch Or Relay Driver States
To modify a field by using the numeric key pad: 1. Press and release the Channel key until the desired field is activated. 2. Enter a number (one to three digits) using the numeric keypad. 3. Press the Enter key. Numeric entry is automatically accepted if the maximum number of digits is entered;... -
Page 24: Changing Or Verifying The Gpib Address
To activate or deactivate direct-driver lines: 1. Press the Relay key. The Relay Control message is displayed. 2. Toggle the desired direct-driver line on or off by pressing and releasing the corresponding key on the numeric keypad. The status LED of the corresponding driver is lit when the driver line is active. Changing or Verifying the GPIB Address To change or check the GPIB address: 1. - Page 25 Caution Do not extend the connector panel more than 10 cm (4 in) from the body of the SCG unit. Operating and Maintenance Instructions – 22...
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Page 26: Programming Guide
Programming Guide The following programming instructions for the SCG unit are intended for users who are familiar with the GPIB interface and how to send or receive messages over the bus. A detailed description of the GPIB interface is contained in ANSI/IEEE Std. 488.1-1987 IEEE Standard Digital Interface for Programmable Instrumentation, published by the Institute of Electrical and Electronics Engineers (IEEE). -
Page 27: Setting The Gpib Address
Table 7: GPIB Interface Functions Mnemonic Function Source handshake, complete capability Acceptor handshake, complete capability Basic talker, serial poll, not addressed if MLA Basic listener, not addressed if MTA Service request capability Remote/local, complete capability Parallel poll, no capability Device clear, complete capability Device trigger, no capability Controller, no capability Electrical interface, open collector drivers... -
Page 28: Operation And Query Commands
The RS232C interface specifications are outlined in Table 8. Table 8: RS232C Interface Functions Name Symbol Pin Number Signal Direction Transmitted data Received data Request to send Clear to send Data terminal ready Signal ground The data protocol is permanently set to 9600 baud, ASCII character code, with eight bits per character, one stop bit, and no parity bit. -
Page 29: Operation Commands
• A command is transmitted in a message, which can contain more than one command. For example, SWITCH 1 1 3;SWNUM? <CR> <LF> contains two commands. • All GPIB messages must end with the terminating sequence <CR> <LF>. • All RS232C commands must be terminated with a single <CR> character. •... -
Page 30: Query Commands
SWITCH I J K Set Optical Connection Sets the optical connection of the selected switch. • I = switch number • J = input channel number • K = output channel number CLOSE I Modify Stepper Motor Optical Setting Connects input channel 1 to the output channel specified by I on the first motor. •... - Page 31 CONFIG? Query Switch Configuration Returns a data stream containing a number of packets equal to the number of switches within the unit, with each packet separated by a semicolon (;) delimiter. Each data packet contains: • One integer representation of the switch number •...
- Page 32 IDN? Identifier Returns a string that identifies the manufacturer, the SCG unit model number, and the firmware level, for example, JDS Uniphase, SCG unit, v1.20. XDR I J Direct Drive Line Control Sets the specified direct-drive relay line ON or OFF.
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Page 33: Status Reporting And Service Request Control
Returns the current state of the specified direct-drive relay line (1 = ON, 0 = OFF). • I = driver number (1 to 8) XDRS? Direct Drive Line Group Query Returns the current state of all specified direct-drive relay lines (1 = ON, 0 = OFF). Status Reporting and Service Request Control The SCG unit maintains three eight-bit registers that are used for status reporting and for enabling the GPIB service request interrupt:... -
Page 34: Srq Mask Register
• Bit 2 (Settled) is set when bit 2 in the condition register changes from 0 to 1. • Bit 0 (Parameter Error) is set when a parameter value is out of the range of the SCG unit. The status register can be read with the status register query (STB?) or by serial polling the GPIB interface. -
Page 35: Sending Commands
Before using any of these examples, ensure that the GPIB address is set to 7, the interface command set is SC, the ULI.EXE driver is loaded, and the switch is connected to the computer using a GPIB cable. Sending Commands This example sets the SCG unit to channel 6 and turns on all the external relay drivers. -
Page 36: Generating A Service Request Interrupt
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 is generated when the SCG unit reaches the channel. ON PEN GOSUB SPOLL ' enable SRQ interrupt PEN ON PRINT #1, "OUTPUT 07;CSB;SRE 4"... -
Page 37: Sending Commands
The RS232C interface cannot receive an SRQ interrupt. Sending Commands This example shows how to send a command. OPEN "COM2:9600,N,8,1" FOR RANDOM AS #3 A = 10 PRINT#3, "SWITCH 1 1 1 ";A Querying Status This example queries and displays the current channel setting. PRINT#3, "SWITCH?"...