HP 86060C Series User Manual
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HP 86060C Series User Manual

Lightwave switches
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User's Guide
HP 86060C-Series
Lightwave Switches
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  • Page 1 User’s Guide HP 86060C-Series Lightwave Switches...
  • Page 2 Hewlett-Packard Com- remedies. Hewlett-Packard tions of the instrument pany will, at its option, either shall not be liable for any HP Part No. 86060-90015 power line switch. repair or replace products direct, indirect, special, inci- Printed in USA which prove to be defective.
  • Page 3 General Safety Considerations General Safety Considerations This product has been designed and tested in accordance with IEC Publica- tion 1010, Safety Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition. The instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the product in a safe condition.
  • Page 4 General Safety Considerations C A U T I O N Always use the three-prong ac power cord supplied with this product. Failure to ensure adequate earth grounding by not using this cord may cause product damage. C A U T I O N This instrument has autoranging line voltage input.

  • Page 5: Table Of Contents

    Adjusting Display Contrast 3-8 Saving Switch States 3-8 To save a state 3-9 To recall a state 3-10 4 Programming General Information 4-3 Setting the switches 4-4 Returning the switch to manual control 4-5 Response generation 4-6 Programming over HP-IB 4-7 Contents-1...
  • Page 6 Contents Programming over RS-232 4-9 Common Commands 4-12 Standard SCPI Commands 4-23 Instrument Specific Commands 4-27 Error Messages 4-31 Programming Examples 4-32 Example 1: Switch position using the *WAI command 4-33 Example 2: Switch position using the Status Byte Register 4-35 Example 3: Switch position using the *OPC command 4-37 Example 4: Input/output multiplexers 4-39 5 Servicing...

  • Page 7: General Information

    Channels, Options, and Accessories 1-3 Specifications and Regulatory Information 1-7 Care of Fiber-Optic Connectors 1-13 Returning the Instrument for Service 1-20 Hewlett-Packard Sales and Service Offices 1-23 General Information...
  • Page 8 SCPI-compatible commands via HP-IB or RS-232 interfaces. The HP 86060C- series lightwave switches are temperature stabilized. • The HP 86060C is a compact switch with 4 to 8 output channels and 1 or 2 in- puts. • The HP 86061C is a mid-size switch in a half-width chassis, with 1 or 2 input channels.

  • Page 9: Channels, Options, And Accessories

    Serial numbers Hewlett-Packard makes frequent improvements to its products to enhance their performance, usability, or reliability, and to control costs. HP service per- sonnel have access to complete records of design changes to each type of equipment, based on the equipment’s serial number. Whenever you contact...
  • Page 10 Whenever you specify the serial number or refer to it in obtaining information about your lightwave switch, be sure to use the complete number, including the full prefix and suffix. Table 1-1. Output Channels HP 86060C Compact HP 86061C Mid-Size HP 86062C Full-Size Lightwave Switch...
  • Page 11 750–1350 nm, 50/125 m multimode fiber (special order) Port Type (select one): Option 050 Connectors on front panel. (Only available on an HP 86060C or HP 86061C, with Option 204.) Option 051 Connectors on rear panel. (For connectorized outputs only.) Option 052 3 meter fiber out of the rear panel.
  • Page 12 Rack mount adapter kit for a single half-width instrument. 5062-3977 Rack mount adapter kit for two adjacent half-width instruments. 5062-4079 Lock link kit for the HP 5062-3977. 5952-4079 Fiber Optics Handbook, an introduction to, and a reference for, fiber-optic measurements.

  • Page 13: Specifications And Regulatory Information

    HP warrants instrument specifications over the recommended calibration interval. To maintain specifications, periodic recalibrations are necessary. We recommend that the HP 86060C-series switches be calibrated at an HP service facility every 24 months. C A U T I O N Improper connector care, cleaning, or use of mismatched cable connectors can invalidate the published specifications and damage connectors.
  • Page 14 General Information Specifications and Regulatory Information Table 1-4. Optical Interface Specifications and Characteristics Insertion Loss Single-mode switches 1.0 dB (0.7 dB) Multi-mode switches 0.8 dB (0.6 dB) ±0.03 dB (±0.025) Insertion Loss Stability Repeatability Sequential switching ±0.008 dB (±0.005) Random switching ±0.025 dB (±0.01) Optical Return Loss Single-mode...
  • Page 15 Starting Channel to Plus Additional Maximum Switch Size Switch Adjacent Channels Time/Channel Switching Time 1×4 HP 86060C, HP 86061C 1×8 HP 86060C, HP 86061C 1×56 HP 86062C 1×100 HP 86062C a. Note that the switch mechanism used for channel count greater than 48 is different, hence switching time.
  • Page 16 177 × 425 × 345.4 mm (7 × 16.75 × 14 in) HP 86062C a. All HP 86060C-series lightwave switches must specify one of the following options, except when specifying Option 3xx. b. Unlike most HP lightwave instruments, connector types are not interchangeable.

  • Page 17: Regulatory Information

    General Information Specifications and Regulatory Information Regulatory Information This instrument is in conformance with the German Regulation on Noise Dec- laration for Machines (Laermangabe nach der Maschinenlaermrerordnung –3.GSGV Deutschland). Notice for Germany: Noise Declaration Acoustic Noise Emission Geraeuschemission LpA < 70 dB LpA <...
  • Page 18 General Information Specifications and Regulatory Information 1-12...

  • Page 19: Care Of Fiber-Optic Connectors

    General Information Care of Fiber-Optic Connectors Care of Fiber-Optic Connectors Advances in measurement capabilities make connectors and connection tech- niques more important than ever. Damage to the connectors on calibration and verification devices, test ports, cables, and other devices can degrade measurement accuracy and damage instruments.
  • Page 20 General Information Care of Fiber-Optic Connectors Figure 1-1. A clean and problem-free connector Figure 1-2. A dirty endface from poor cleaning Repeated connections made without removing loose particles, or using improper cleaning tools can lead to physical damage of the glass fiber endface, as shown in Figure 1-2.
  • Page 21 General Information Care of Fiber-Optic Connectors Figure 1-3. A damaged fiber end from using an improper cleaning procedure The cure for these problems is disciplined connector care. as described in the following list and in “Cleaning optical connectors” on page 1-17.
  • Page 22 General Information Care of Fiber-Optic Connectors scrape material off the inside of the connector or even break the inside sleeve of connectors made with ceramic material. • Avoid over tightening connections. Unlike common electrical connections, tighter is not better. The purpose of the connector is to bring the endfaces of two fibers together.

  • Page 23: Cleaning Optical Connectors

    If you think the use of such compounds is necessary, refer to the compound manufacturer for information on application and cleaning procedures. Table 1-7. Cleaning Accessories Item HP Part Number Isopropyl alcohol 8500-5344 Cotton swabs 8520-0023...
  • Page 24 General Information Care of Fiber-Optic Connectors Table 1-8. Dust Caps Provided with Lightwave Instruments Item HP Part Number Laser shutter cap 08145-64521 FC/PC dust cap 08154-44102 Biconic dust cap 08154-44105 DIN dust cap 5040-9364 HMS10/HP dust cap 5040-9361 ST dust cap...

  • Page 25: Measuring Insertion Loss And Return Loss

    General Information Care of Fiber-Optic Connectors If the performance, after the initial cleaning, seems poor try cleaning the con- nector again. Often a second cleaning will restore proper performance. The second cleaning should be more arduous with a scrubbing action. Measuring insertion loss and return loss Consistent measurements with your lightwave equipment are a good indica- tion that you have good connections.

  • Page 26: Returning The Instrument For Service

    HP Instrument Support Center ......(800) 403-0801 If the instrument is still under warranty or is covered by an HP maintenance contract, it will be repaired under the terms of the warranty or contract (the warranty is at the front of this manual).

  • Page 27: Preparing The Instrument For Shipping

    General Information Returning the Instrument for Service Preparing the instrument for shipping 1 Write a complete description of the failure and attach it to the instrument. Include any specific performance details related to the problem. The following information should be returned with the instrument. •...
  • Page 28 General Information Returning the Instrument for Service all sides of the instrument for packing material, and strong enough to accom- modate the weight of the instrument. • Surround the equipment with approximately 7 cm (3 inches) of packing material, to protect the instrument and prevent it from moving in the carton. If packing foam is not available, the best alternative is S.D-240 Air Cap™...

  • Page 29: Hewlett-Packard Sales And Service Offices

    General Information Hewlett-Packard Sales and Service Offices Hewlett-Packard Sales and Service Offices Before returning an instrument for service, call the HP Instrument Support Center at (800) 403-0801. Hewlett-Packard Sales and Service Offices (1 of 2) U.S. FIELD OPERATIONS Headquarters California, Northern...
  • Page 30 General Information Hewlett-Packard Sales and Service Offices Hewlett-Packard Sales and Service Offices (2 of 2) INTERCON FIELD OPERATIONS Headquarters Australia Canada Hewlett-Packard Company Hewlett-Packard Australia Ltd. Hewlett-Packard Ltd. 3495 Deer Creek Rd. 31-41 Joseph Street 17500 South Service Road Palo Alto, California 94304-1316 Blackburn, Victoria 3130 Trans-Canada Highway (415) 857-5027...

  • Page 31: Installing

    Step 1. Inspect the shipment 2-3 Step 2. Check the fuse 2-4 Step 3. Connect the line-power cable 2-5 Step 4. Turn on the lightwave switch 2-7 Step 5. Performing an operational check 2-8 If The Operational Check Fails 2-10 Installing...
  • Page 32 Installing Installing Installing W A R N I N G Before installing the lightwave switch, refer to “General Safety Considerations” on page -iii of this manual. C A U T I O N OPTION 3XX INSTRUMENTS: To avoid damage, handle the pigtail fiber with care.

  • Page 33: Step 1. Inspect The Shipment

    If your shipment is damaged or incomplete, save the packing materials and notify both the shipping carrier and the nearest Hewlett-Packard sales and service office. HP will arrange for repair or replacement of damaged or incomplete shipments without waiting for a settlement from the transportation company.

  • Page 34: Step 2. Check The Fuse

    Installing Step 2. Check the fuse Step 2. Check the fuse 1 Locate the line-input connector on the instrument’s rear panel. 2 Disconnect the line-power cable if it is connected. 3 Use a small flat-blade screwdriver to open the pull-out line fuse drawer. W A R N I N G For continued protection against fire hazard, replace line fuse only with same type and ratings (2A/250V).

  • Page 35: Step 3. Connect The Line-Power Cable

    Installing Step 3. Connect the line-power cable Step 3. Connect the line-power cable 1 Verify that the line power meets the requirements shown in the following table. Table 2-1. HP 86060C-Series Power Requirements Characteristic Requirement Input Voltage within range 90 to 254 Vac...
  • Page 36 8120-4753 Straight MITI 90/230 Dark Gray Japan 8120-4754 90° 90/230 * Part number shown for plug is the industry identifier for the plug only. Number shown for cable is the HP part number for the complete cable including the plug.

  • Page 37: Step 4. Turn On The Lightwave Switch

    Installing Step 4. Turn on the lightwave switch Step 4. Turn on the lightwave switch 1 Turn the lightwave switch on by pressing the line switch. The liquid-crystal display (LCD) displays the message: Initializing Screen Saver A screen-saver has been built in to the switch to prolong the lifetime of the backlit LCD. The screen-saver turns off the LCD backlighting after 10 minutes elapses without a front-panel key being pressed.

  • Page 38: Step 5. Performing An Operational Check

    Insertion loss can be tested using a number of different test equipment config- urations. Some of these are: • an HP 8702B or HP 8703A lightwave component analyzer system with a light- wave source and receivers • an HP 83420 lightwave test set with an HP 8510 network analyzer...
  • Page 39 Installing Step 5. Performing an operational check Many other possibilities exist. The basic requirements are an appropriate lightwave source and a compatible lightwave receiver. Refer to the manuals provided with your lightwave test equipment for information on how to per- form an insertion loss test.

  • Page 40: If The Operational Check Fails

    If The Operational Check Fails If The Operational Check Fails If the HP 86060C does not pass the operational check, you should review the procedure being performed when the problem occurred. A few minutes spent performing some simple checks may save waiting for your instrument to be repaired.

  • Page 41: Using The Switch

    Front-panel features 3-3 Rear-panel features 3-5 Changing Switch Position 3-6 Adjusting Display Contrast 3-8 Saving Switch States 3-8 Using the Switch...
  • Page 42 W A R N I N G To prevent electrical shock, disconnect the HP 86060C-series switch from the mains before cleaning. Use a dry cloth or one slightly dampened with water to clean the external case parts. Do not attempt to clean internally.

  • Page 43: Front-Panel Features

    EMC filters and before other parts of the instrument. Graphically shows current signal path of the switch and the current HP-IB status of Display the RMT, LSN, TLK, and SRQ lines.
  • Page 44 Front-panel features LOCAL key Press this key to display the HP-IB address of the lightwave switch. You can also change the address using the numeric keypad. If a computer has placed the instrument in remote control, is this key to reenable front-panel control.

  • Page 45: Rear-Panel Features

    The connectors are grouped as Port A and Port B. connector(s) HP-IB connector Provides for remote control of the lightwave switch via the HP-IB interface bus. Refer to “Programming over HP-IB” on page 4-7. RS-232 connector Provides for remote control of the lightwave switch via RS-232. Refer to “Pro-...

  • Page 46: Changing Switch Position

    Using the Switch Changing Switch Position Changing Switch Position...

  • Page 47: To Set Single Port A Switches

    Using the Switch To set single port A switches To set single port A switches The 1 × N switch has a single Port A channel and multiple Port B channels. 1 To select a Port B channel, press: SWITCH PORT The Port B channels are shown in inverse video and the prompt, Port B active, appears at the bottom of the display.

  • Page 48: To Set Dual Port A Switches

    Using the Switch To set dual port A switches To set dual port A switches The 2 × N switch has two Port A channels and multiple Port B channels. 1 To select the Port A channel, press: SWITCH PORT The Port A channels are shown in inverse video and the prompt, Port A active, appears at the bottom of the display.

  • Page 49: To Save A State

    Using the Switch To save a state To save a state To save the currently displayed switch state in one of the ten internal storage registers, press SAVE, and then press one of the numeric keys (0–9).

  • Page 50: To Recall A State

    Using the Switch To recall a state To recall a state To recall a previously saved switch state from one of the ten internal storage registers, press RECALL, and then press one of the numeric keys (0–9). 3-10...

  • Page 51: Programming

    General Information 4-3 Programming over HP-IB 4-7 Programming over RS-232 4-9 Common Commands 4-12 Standard SCPI Commands 4-23 Instrument Specific Commands 4-27 Error Messages 4-31 Programming Examples 4-32 Programming...
  • Page 52 Where to begin . . . • To program the HP 86060-series lightwave switch, it is necessary to add either an HP-IB or RS-232 interface to the rear panel of the switch. • The programming examples for individual commands in this manual are writ- ten in HP BASIC 6.0 for an HP 9000 Series 200/300 Controller.

  • Page 53: General Information

    Programming General Information General Information This instrument has three types of commands: • Common commands • Standard SCPI commands • Instrument specific commands Common The common commands are the commands defined by IEEE 488.2. These commands commands control some functions that are common to all IEEE 488.2 instru- ments.

  • Page 54: Setting The Switches

    2 of the instrument. OUTPUT 711;":ROUTE:LAYER2:CHANNEL A2,B4" The following HP BASIC statement command moves the switch on switch layer 1 to channel 1 of port A and channel 1 of port B: OUTPUT 711;":ROUTE:LAYER1:CHANNEL A1,B1"...

  • Page 55: Returning The Switch To Manual Control

    Programming Returning the switch to manual control Returning the switch to manual control To return the switch to manual control after remote operation, press LOCAL.

  • Page 56: Response Generation

    The output queue must be read before the next program message is sent. For example, when you send the query :SYSTEM:CONFIG? you must follow that query with an input statement. In HP BASIC, this is usually done with an ENTER statement immediately followed by a variable name. This statement...

  • Page 57: Programming Over Hp-Ib

    The HP-IB address is factory preset to 711. To change the HP-IB address, press LOCAL. The last two digits of the current HP-IB address are displayed. To enter a different address, press the two numeric keys for that address. For example: 14 for address 714, then press ENTER.
  • Page 58 The examples in this manual assume the instrument is at device address 711. Lockout With HP-IB, the instrument is placed in the lockout mode by sending the local lockout command (LLO). The instrument can be returned to local by sending the go-to-local command (GTL) to the instrument.

  • Page 59: Programming Over

    Programming Programming over RS-232 Programming over RS-232 This section describes the interface functions and some general concepts of the RS-232 interface. The RS-232 interface on this instrument is Hewlett- Packard’s implementation of EIA Recommended Standard RS-232, "Interface Between Data Terminal Equipment and Data Communications Equipment Employing Serial Binary Data Interchange."...
  • Page 60 Programming Programming over RS-232 3-wire interface The switch uses a 3-wire RS-232 interface. It provides a simple connection between devices because you can ignore hardware handshake requirements. The switch uses the following connections on its RS-232 interface for 3-wire communication: Switch Computer SGND (Signal Ground)
  • Page 61 Many of the commands used for controlling the switch and for retrieving data from the switch are the same as for the HP-IB interface. Refer to the individual command descriptions to determine if the command applies to both HP-IB and RS-232.

  • Page 62: Common Commands

    Service Request Enable Register are affected by this command. After the *CLS command, the instrument is left in the idle state. The com- mand does not alter the instrument setting. *OPC/*OPC? actions are can- celled. Usage: HP-IB only Command Syntax: *CLS Example: OUTPUT 711;"*CLS" *ESE (Event Status Enable) The *ESE command sets the bits in the Standard Event Status Enable Regis- ter and enables the corresponding bits in the Standard Event Status Register.
  • Page 63 The Standard Event Status Enable Register is cleared at power-on. The *RST and *CLS commands do not change the register. The *ESE query returns the value of the Standard Event Status Enable Regis- ter. Usage: HP-IB only Command Syntax: *ESE Where: ::= 0 to 255 Example: OUTPUT 711;"*ESE 64"...
  • Page 64 Table 4-2 shows each bit in the Event Status Register and its bit weight. Reading the register clears the Event Status Register. Usage: HP-IB only Query Syntax: *ESR? Returned Format: ...
  • Page 65 An *IDN query must be the last query in a program message. Any queries after the *IDN query in a program message are ignored. Usage: HP-IB and RS-232 Query Syntax: *IDN? Returned Format: "HEWLETT-PACKARD 8606XC, 0, VERSION "...
  • Page 66 The *RCL command recalls the state of the instrument from the specified instrument state register. If the instrument state register has not been previ- ously stored, the *RCL command will restore the instrument to its power-on state. Usage: HP-IB and RS-232 4-16...
  • Page 67 OUTPUT 711;"*RCL 3" *RST (Reset) The *RST command returns the switch to its power-up condition. For all lay- ers, each port is set to its OFF position or channel 1. Usage: HP-IB and RS-232 Command Syntax: *RST Example: OUTPUT 711;"*RST" *SAV (Save) The *SAV command saves the current state of the instrument to the specified instrument state register.
  • Page 68 The Service Request Enable Register is cleared at power-on. The *RST and *CLS commands do not change the register. The *SRE query returns the value of the Service Request Enable Register. Usage: HP-IB only Command Syntax: *SRE Where: ::= 0 to 255 Example: OUTPUT 711;"*SRE 32"...
  • Page 69 Programming Common Commands Table 4-3. Service Request Enable Register Service Request Enable Register (High–Enables the SRE bit) Bit Weight Enables Not Used MSS – Master Summary Status ESB – Event Status Bit MAV – Message Available Not Used Not Used Not Used OPP –...
  • Page 70 After sending a :ROUTE:LAYER:CHANNEL command, bit 0 of the Status Byte Regis- ter will be set to one while the switch is moving and return to zero when the switch has settled. Usage: HP-IB only Query Syntax: *STB? Returned Format: ...
  • Page 71 A zero indicates the test passed and a non-zero value indicates the test failed. If a test fails, refer to “Step 5. Performing an operational check” on page 2-8. Usage: HP-IB and RS-232 Query Syntax: *TST? Returned Format: ...
  • Page 72 Following a ROUTE:LAYER:CHANNEL command with a *WAI command followed by a query, will ensure the query is not answered until the switch has settled to its new position. Usage: HP-IB only Command Syntax: *WAI Example: OUTPUT 711;":ROUTE:LAYER1:CHANNEL A2,B4"...

  • Page 73: Standard Scpi Commands

    Condition registers have no function in this instrument, but the query is included for compatability with the SCPI standard. This query always returns the value 0. Usage: HP-IB only Query Syntax: :STATus::CONDition? Returned Format: Where: ...
  • Page 74 The :STATus:[:EVENT] query returns the value of the event register for the node. Event registers have no function in this instrument, but the query is included for compatability with the SCPI standard. This query always returns the value 0. Usage: HP-IB only Query Syntax: :STATus:[:EVENT?] Returned Format: Where: ...
  • Page 75 Any further queries returns "+0,No errors" until another error occurs. Refer to Table 4-6 for the error numbers and descriptions. Usage: HP-IB and RS-232 Query Syntax: :SYSTem:ERRor? Returned Format: , ...
  • Page 76 Programming Standard SCPI Commands Where: = an integer error code (NR1) = text of error message Example: DIM Error$[50] OUTPUT 711;":SYSTEM:ERROR?" ENTER 711;Error$ PRINT Error$ 4-26...

  • Page 77: Instrument Specific Commands

    Programming Instrument Specific Commands Instrument Specific Commands The following commands are specific to remote operation of the HP 86060C- series lightwave switches. CLOSE RS232 COM The CLOSE RS232 COM command disables remote operation of the instru- ment over the RS-232 interface and enables the front-panel keyboard. This command is the same as pressing the LOCAL key while in remote operation over the RS-232 interface.
  • Page 78 “B” channel will likely be output on an unselected “A” channel. To avoid exposure to light energy, always cover all unused channels. Usage: HP-IB and RS-232 Command Syntax: [:ROUTe]:[LAYer]:CHANnel a positive integer (NR1). Set to 1 if the instrument does not have Where:...
  • Page 79 PRINT Setting$ :SYSTem:CONFig The :SYSTem:CONFig query returns the switch configuration of the instru- ment. For each layer, the minimum and maximum channel numbers for each port are given. Usage: HP-IB and RS-232 Query Syntax: :SYSTem:CONFig? Returned Format: = “LAABBAABB...” 4-29...
  • Page 80 Programming Instrument Specific Commands Where: = number of layers on switch = minimum available channel on port A, layer 1 = maximum available channel on port A, layer 1 = minimum available channel on port B, layer 1 ...

  • Page 81: Error Messages

    Programming Error Messages Error Messages Table 4-6. Error Messages Error Number Description –105 GET not allowed –110 Command Header error –120 Numeric Data error –140 Character Data error –150 String Data error –170 Expression error –220 Parameter error –350 Too many errors –410 Query INTERRUPTED –420...

  • Page 82: Programming Examples

    (DUTs). The test system includes an HP 8153A optical multimeter with an HP 81554SM laser source and an HP 81532A optical power sensor. This program measures the optical power through each device under test every 5 minutes and displays a message if the power drops below 1 microwatt.

  • Page 83: Example 1: Switch Position Using The *Wai Command

    Line No. 1 10 to 20 Declare some variables for use in the program. Set the HP 8606X Optical Switch address variable, Switch_addr, to 711 (factory default). 40 to 60 Clear the screen and prompt the operator for the desired switch position.
  • Page 84 ROUTE:LAYER:CHANNEL HP-IB command. For example, if A_position=1 and B_position=3, then Channel$ would equal "A1,B3". Set Command$ to represent the full HP-IB command to set the desired switch position, appending Channel$. For the example Channel$ given above, Command$ would equal "ROUTE:LAYER1:CHANNEL A1,B3".

  • Page 85: Example 2: Switch Position Using The Status Byte Register

    Programming Example 2: Switch position using the Status Byte Register Example 2: Switch position using the Status Byte Regis- This program is identical in functionality to the first sample program except a different method is used for determining when the switch has settled. The set- tling routine used here reads the Status Byte Register repeatedly until bit 0 returns to zero.
  • Page 86 Programming Example 2: Switch position using the Status Byte Register Description Line No. 10 to 170 Same as in Example 1 except for declaration of Status_byte. 190 to 240 The new Wait_to_settle subroutine. Start REPEAT loop. Send the *STB? command to the switch. This queries the switch to return the value of the status byte.

  • Page 87: Example 3: Switch Position Using The *Opc Command

    Programming Example 3: Switch position using the *OPC command Example 3: Switch position using the *OPC command This program is identical in functionality to the first two example programs, except that it uses yet another method for determining when the switch is set- tled.
  • Page 88 Programming Example 3: Switch position using the *OPC command Start REPEAT loop. Send the *ESR? command to the switch. This queries the switch for the Event Status Register value. Read the value of the Event Status Register. If the LSB of the ESR is 1 (that is, the switch is settled), exit the loop.

  • Page 89: Example 4: Input/Output Multiplexers

    Block diagram of the test system This example test system uses an HP 8153A optical multimeter equipped with an HP 81554SM laser source and an HP 81532A optical sensor. This program periodically (every 5 minutes) measures the optical power through each device under test and displays an error message if any measured power drops below 1 microwatt.
  • Page 90 Programming Example 4: Input/output multiplexers PRINT "IT WILL STOP MEASURING AFTER 50 MEASUREMENT CYCLES." PRINT "TO HALT PROGRAM EARLIER, PRESS F8." GOSUB Init_system ON TIME 300 GOSUB Measure_duts ON KEY 8 LABEL "QUIT" GOTO End_prog Meas_count=0 REPEAT UNTIL Meas_count=50 GOTO End_prog 210 Init_system:! Initialize HPIB instruments CLEAR (7) ! clear HPIB interface ! set HPIB instrument addresses...
  • Page 91 Exit program. 210 to 350 The Init_system subroutine. Clear the HP-IB bus. 240 to 260 Define HP-IB addresses for input and output switches, optical multimeter. Define Min_power to be 1 microwatt. 300 to 340 Configure optical multimeter to enable autoranging, set power units to Watts, and select the upper wavelength (1550 nm) on the source.
  • Page 92 FOR-NEXT loop to step through and measure each of the 8 devices-under-test. 440 to 450 Create the HP-IB commands to select the input and output switch positions to measure the current device-under-test. For example, if Current_dut=3 then In_switch$ and Out_switch$ would equal "ROUTE:LAYER1:CHANNEL B3".

  • Page 93: Servicing

    Spare Channel Replacement Procedure 5-4 Electrostatic Discharge Information 5-7 Servicing...
  • Page 94 Servicing Servicing Servicing This chapter provides a procedure to replace an internal fiber-optic cable with a spare cable. This procedure may be needed if a fiber-optic cable becomes damaged through improper connections. Spare fiber-optic cables are provided inside the lightwave switch. Before servicing this lightwave switch, familiarize yourself with the safety markings on the instrument and the safety instructions in this manual.
  • Page 95 Servicing Servicing Required service tools To enable extra fiber/connector the following tools are required: TORX driver ..........#15 TORX driver .

  • Page 96: Spare Channel Replacement Procedure

    This procedure is included so the instrument can be repaired quickly in the field. Performing this procedure violates the calibration seal. When spare fibers have replaced bad port fibers, the unit should be sent to an HP Service Center, at your earliest convenience, to have new port fiber/connectors spliced into the instrument and to have the instrument calibrated.
  • Page 97 Enter the number of the channel and press Enter. The display will show the intended cable changes. 12 Press Enter to confirm the changes. Figure 5-1. Top view of the HP 86060C or 86061C lightwave switch...
  • Page 98 Servicing Spare Channel Replacement Procedure Figure 5-2. Top view of the HP 86062C lightwave switch...

  • Page 99: Electrostatic Discharge Information

    Servicing Electrostatic Discharge Information Electrostatic Discharge Information Electrostatic discharge (ESD) can damage or destroy electronic components. All work on electronic assemblies should be performed at a static-safe work station. The following figure shows an example of a static-safe work station using two types of ESD protection: •...
  • Page 100 • Personnel should be grounded with a resistor-isolated wrist strap before re- moving any assembly from the unit. • Be sure all instruments are properly earth-grounded to prevent a buildup of static charge. Table 3. Static-Safe Accessories HP Part Number Description × × 9300-0797 Set includes: 3M static control mat 0.6 m...
  • Page 101 ESD, 5-8 HP-IB, 4-7 static-safe work station, 5-8 altitude, 1-9 extra fiber connector, replacing, 5-4 before servicing the HP 86060C, 2-10 fiber optics cleaning connections, 1-13 connectors, covering, 1-21 fiber type, 1-3 cables, 1-3 fiber-optic cable, spare, 5-2...
  • Page 102 Index Option 109, 1-3 Option 153, 1-3 IEC Publication 1010, i-iii Option H51, 1-3 index-matching compounds, 1-17 Options, 1-5 initial inspection, 2-3 options, 1-5 input power cable, 2-6 connector, 1-13 input voltage, 2-5 insertion loss, connectors, 1-19 insertion loss, measuring, 1-19 packaging for shipment, 1-21 insertion loss, testing, 2-8 pigtail connections, 1-2, 2-2...
  • Page 103 Index serial number, 1-4, 2-3 serial numbers, 1-3 service, 1-20 replacement procedure, 5-4 returning for, 1-20 sales and service offices, 1-23 service options, 2-10 service tools, 5-3 shipping procedure, 1-21 single-mode fiber, 1-3 spare fiber installation, 5-4 spare fiber-optic cables, 5-2 specifications, 1-7 standard SCPI commands definition, 4-3...
  • Page 104 Index Index-4...

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