Lightwave Communications LDX-3232 User Manual

User’s GuideLDX-3232High Compliance Current Source70037800_R01_04_06ILX Lightwave Corporation · P. O. Box 6310 · Bozeman, MT, U.S.A. 59771 · U.S. &

LIST OF TABLESviii LDX-3232 

FUNCTIONS AND FEATURESSaving and Recalling Under Remote Operation84 LDX-3232CHAPTER 5 To recall a previously saved instrument setup, press the SELE

FUNCTIONS AND FEATURESUsing the LDX-3232 Current Source’s Trigger Function04_06 LDX-3232 85 CHAPTER 5Using the LDX-3232 Current Source’s Trigger Fu

FUNCTIONS AND FEATURESUsing the LDX-3232 Current Sources’s BNC Interlock Connection86 LDX-3232CHAPTER 5 Using the LDX-3232 Current Sources’s BNC In

FUNCTIONS AND FEATURESModulating the Laser Current Source04_06 LDX-3232 87 CHAPTER 5Setting up the Current Source for a modulated laser injection c

FUNCTIONS AND FEATURESModulating the Laser Current Source88 LDX-3232CHAPTER 5 To disable the output, press the OUTPUT push button again. When the L

CALIBRATION AND TROUBLESHOOTINGCalibration Overview04_06 LDX-3232 89 CHAPTER 6CHAPTER 6        

CALIBRATION AND TROUBLESHOOTINGRecommended Equipment90 LDX-3232CHAPTER 6 Finally, the LDX-3232 Current Source should be allowed to warm up for at l

CALIBRATION AND TROUBLESHOOTINGLocal Calibration of the LDX-3232 Current Source04_06 LDX-3232 91 CHAPTER 6Figure 6.1 IPD Calibration CircuitLocal

CALIBRATION AND TROUBLESHOOTINGLocal Calibration of the LDX-3232 Current Source92 LDX-3232CHAPTER 6 a. Measure and record the resistance of a 1Ω, 2

CALIBRATION AND TROUBLESHOOTINGLocal Calibration of the LDX-3232 Current Source04_06 LDX-3232 93 CHAPTER 6LDX-3232 Series Current Source then autom

SAFETY AND WARRANTY INFORMATION04_06 LDX-3232 ix SAFETY AND WARRANTY INFORMATIONThe Safety and Warranty Information section provides details about c

CALIBRATION AND TROUBLESHOOTINGLocal Calibration of the LDX-3232 Current Source94 LDX-3232CHAPTER 6 g. Release the (PARAMETER) SET switch to accept

CALIBRATION AND TROUBLESHOOTINGRemote Calibration of the LDX-3232 Current Source04_06 LDX-3232 95 CHAPTER 6Remote Calibration of the LDX-3232 Curre

CALIBRATION AND TROUBLESHOOTINGRemote Calibration of the LDX-3232 Current Source96 LDX-3232CHAPTER 6 a. Measure and record the resistance of a 1 Ω,

CALIBRATION AND TROUBLESHOOTINGRemote Calibration of the LDX-3232 Current Source04_06 LDX-3232 97 CHAPTER 6Configure the current source in the foll

CALIBRATION AND TROUBLESHOOTINGRemote Calibration of the LDX-3232 Current Source98 LDX-3232CHAPTER 6 Laser Forward Voltage Measurement CalibrationT

CALIBRATION AND TROUBLESHOOTINGTroubleshooting Guide04_06 LDX-3232 99 CHAPTER 6Troubleshooting GuideThis section is a guide to troubleshooting the

CALIBRATION AND TROUBLESHOOTINGTroubleshooting Guide100 LDX-3232CHAPTER 6 Symptom Corrective ActionsUnable to adjust output Check the I LIMIT param

CALIBRATION AND TROUBLESHOOTINGError Messages04_06 LDX-3232 101 CHAPTER 6Error MessagesIn the event of a hardware error condition, error messages w

CALIBRATION AND TROUBLESHOOTINGError Messages102 LDX-3232CHAPTER 6 Error Code ExplanationE-203 Security violation, command is not available without

SAFETY SYMBOLSx LDX-3232 All instruments returned to ILX Lightwave are required to have a Return Authorization Number assigned by an official repres

WARRANTY04_06 LDX-3232 xi WARRANTYILX LIGHTWAVE CORPORATION warrants this instrument to be free from defects in material and workmanship for a perio

WARRANTYxii LDX-3232 6 Send the instrument, transportation pre-paid, to ILX Lightwave. Clearly write the return authorization number on the outside

WARRANTY04_06 LDX-3232 xiii Comments, Suggestions, and ProblemsTo ensure that you get the most out of your ILX Lightwave product, we ask that you di

WARRANTYxiv LDX-3232 in a container with at least 3 inches (7.5 cm) of compressible packaging material on all sides.We look forward to serving you e

INTRODUCTION AND SPECIFICATIONSProduct Overview04_06 LDX-3232 1 CHAPTER 1CHAPTER 1         

INTRODUCTION AND SPECIFICATIONSInitial Inspection2 LDX-3232CHAPTER 1 Initial InspectionWhen you receive your LDX-3232 instrument, verify that the f

INTRODUCTION AND SPECIFICATIONSInstalling Your LDX-3232 High Compliance Current Source04_06 LDX-3232 3 CHAPTER 1GPIB ConnectorThe IEEE 488 GPIB int

INTRODUCTION AND SPECIFICATIONSInstalling Your LDX-3232 High Compliance Current Source4 LDX-3232CHAPTER 1 Figure 1.1 LDX-3232 Front ViewFigure 1.2

INTRODUCTION AND SPECIFICATIONSMaintenance04_06 LDX-3232 5 CHAPTER 1MaintenanceYou may have to return your instrument to the ILX Lightwave facility

INTRODUCTION AND SPECIFICATIONSSpecifications6 LDX-3232CHAPTER 1 SpecificationsLDX-3232Drive Current Output1Output Current Range 0 to 2000 mA 0 to

INTRODUCTION AND SPECIFICATIONSSpecifications04_06 LDX-3232 7 CHAPTER 1Notes1. All values relate to a one-hour warm-up period at room temperature,

INTRODUCTION AND SPECIFICATIONSSpecifications8 LDX-3232CHAPTER 1 8. Maximum monitor photodiode current drift over any 30 minute period. Assumes ze

OPERATIONApplying Power to Your LDX-323204_06 LDX-3232 9 CHAPTER 2CHAPTER 2          

OPERATIONConnecting to the Laser10 LDX-3232CHAPTER 2 The Power On StateYou can choose to "clear" the last saved state by recalling the de

OPERATIONConnecting to the Laser04_06 LDX-3232 11 CHAPTER 2grounds in the circuit. Multiple earth grounds may provide circuit paths that induce spu

OPERATIONConnecting to the Laser12 LDX-3232CHAPTER 2 Figure 2.4 Common Laser Anode - Photodiode AnodeThe 9-pin connector marked CURRENT SOURCE on

OPERATIONConnecting to the Laser04_06 LDX-3232 13 CHAPTER 2Photodiode ConnectionsMany laser diode modules contain an internal photodiode that monit

TABLE OF CONTENTS04_06 LDX-3232 i                 

OPERATIONFront Panel Operation14 LDX-3232CHAPTER 2 Front Panel OperationThis section describes fundamentals of operation for your LDX-3232 in two o

OPERATIONOperating a Laser in Constant Current (I) Mode04_06 LDX-3232 15 CHAPTER 2Setting Up the Precision Current SourceSet the LDX-3232 in Consta

OPERATIONOperating a Laser in Constant Current (I) Mode16 LDX-3232CHAPTER 2 To set the current source limit, use the SELECT push button in the PARA

OPERATIONOperating a Laser in Constant Power (P) Mode04_06 LDX-3232 17 CHAPTER 2Conditions That Will Automatically Shut Off the LASER OUTPUTThe fol

OPERATIONOperating a Laser in Constant Power (P) Mode18 LDX-3232CHAPTER 2 A method to calculate the responsivity is suggested below.1 Measure (with

OPERATIONError Indicators04_06 LDX-3232 19 CHAPTER 2Now the instrument is configured to operate in Constant Power Mode. In the MODE section, enable

OPERATIONError Indicators20 LDX-3232CHAPTER 2 

REMOTE OPERATION04_06 LDX-3232 21 CHAPTER 3CHAPTER 3             

REMOTE OPERATIONLDX-3232 Current Source Command Set22 LDX-3232CHAPTER 3 Changing Operation from Local to RemoteSending a command over the GPIB will

REMOTE OPERATIONLDX-3232 Current Source Command Set04_06 LDX-3232 23 CHAPTER 3The syntax of the LDX-3232 High Compliance Current Source commands fo

TABLE OF CONTENTSii LDX-3232 Connecting to the Laser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Interloc

REMOTE OPERATIONLDX-3232 Current Source Command Set24 LDX-3232CHAPTER 3 If multiple parameters are expected, they should be separated with commas:L

REMOTE OPERATIONCommand Paths04_06 LDX-3232 25 CHAPTER 3Command PathsThe LDX-3232 High Compliance Current Source device-dependent commands are stru

REMOTE OPERATIONIEEE488.2 Command Commands26 LDX-3232CHAPTER 3 IEEE488.2 Command CommandsThe IEEE488.2 Common Commands and Queries are distinguishe

REMOTE OPERATIONLDX-3232 Frequently Used Commands04_06 LDX-3232 27 CHAPTER 3LDX-3232 Frequently Used CommandsThe LDX-3232 High Compliance Current S

REMOTE OPERATIONStatus Reporting28 LDX-3232CHAPTER 3 Status ReportingThis section contains information that is relevant for understanding instrumen

REMOTE OPERATIONStatus Reporting04_06 LDX-3232 29 CHAPTER 3For example, the user may turn the current source on (LAS:OUT 1), enable an SRQ on Opera

REMOTE OPERATIONStatus Reporting30 LDX-3232CHAPTER 3 Output Off RegisterThe Output Off Enable Register allows you to determine that conditions and

REMOTE OPERATIONStatus Reporting04_06 LDX-3232 31 CHAPTER 3rFigure 3.3 LDX-3232 Output Off Register0 - LASER Current Limit 8 - N/A1 - LASER Voltag

REMOTE OPERATIONCommand Timing and Completion32 LDX-3232CHAPTER 3 Command Timing and CompletionThis section describes, for each device-dependent co

REMOTE OPERATIONError Messages04_06 LDX-3232 33 CHAPTER 3(up to 10 may be stored). Reading the error queue via GPIB clears the error queue.Table 3.

TABLE OF CONTENTS04_06 LDX-3232 iii Chapter 4 Command ReferenceLDX-3232 Device-Dependent Commands . . . . . . . . . . . . . . . . . . . . . . . . .

REMOTE OPERATIONError Messages34 LDX-3232CHAPTER 3 Error Code ExplanationE-501 LASER interlock disabled outputE-503 LASER open circuit disabled out

COMMAND REFERENCE04_06 LDX-3232 35 CHAPTER 4CHAPTER 4             

COMMAND REFERENCE36 LDX-3232CHAPTER 4 Name Parameters FunctionLAS:CAL:MDI? NONE Returns the ready state for entering the monitor photodiode current

COMMAND REFERENCE04_06 LDX-3232 37 CHAPTER 4Name Parameters FunctionLAS:LIM:I2 1 Used to set the LASER low range current source limitLAS:LIM:I2? NO

COMMAND REFERENCE38 LDX-3232CHAPTER 4 Name Parameters FunctionLAS:TOL? NONE Used to return the LASER setpoint tolerance value and time period value

COMMAND REFERENCELDX-3232 Device-Dependent Commands04_06 LDX-3232 39 CHAPTER 4LDX-3232 Device-Dependent CommandsThis section contains all of the de

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference40 LDX-3232CHAPTER 4 LDX-3232 Device-Dependent Command ReferenceThe following pages con

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 41 CHAPTER 4The ERRors? query returns a list of command and device error

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference42 LDX-3232CHAPTER 4 The LASer:CALMD? query returns the value of the laser's photo

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 43 CHAPTER 4The LASer:CAL:LDI command is used to enter the LASER current

TABLE OF CONTENTSiv LDX-3232 

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference44 LDX-3232CHAPTER 4 The LASer:CAL:LDI? query is used to determine that the LDX-3232 is

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 45 CHAPTER 4The LASer:CAL:LDV? query is used to determine that the LDX-3

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference46 LDX-3232CHAPTER 4 The LASer:CAL:MDI? query is used to determine that the LDX-3232 is

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 47 CHAPTER 4Circuit condition is fleeting and may be missed via the LAS:

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference48 LDX-3232CHAPTER 4 The LASer:DISplay command enables or disables (turns off) the disp

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 49 CHAPTER 4The LASer:DISplay:LDI command sets the laser display to show

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference50 LDX-3232CHAPTER 4 The LASer:DISplay:LDV command sets the laser display to show the l

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 51 CHAPTER 4The LASer:DISplay:MDI command sets the laser display to show

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference52 LDX-3232CHAPTER 4 The LASer:DISplay:MDP command sets the display to show the monitor

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 53 CHAPTER 4The LASer:DISplay:PARAM command enables the display to show

LIST OF FIGURES04_06 LDX-3232 v                 

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference54 LDX-3232CHAPTER 4 The LASer:DISplay:SET? query returns the status of the setpoint di

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 55 CHAPTER 4Examples "LAS:ENAB:COND 129" -action: enables the

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference56 LDX-3232CHAPTER 4 The LASer:ENABle:EVEnt command sets the status event enable regist

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 57 CHAPTER 4The LASer:ENABle:EVEnt? query returns the value of the statu

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference58 LDX-3232CHAPTER 4 The LASer:ENABle:OUTOFF command sets the status outoff enable regi

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 59 CHAPTER 4.The LASer:ENABle:OUTOFF? query returns the value of the sta

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference60 LDX-3232CHAPTER 4 The LASer:EVEnt? query returns the value of the status event regis

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 61 CHAPTER 4The LASer:INC command increments the selected laser control

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference62 LDX-3232CHAPTER 4 The LASer:LDI command sets the laser control current.Syntax Diagra

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 63 CHAPTER 4The LASer:LDV command sets the laser voltage for calibration

LIST OF FIGURESvi LDX-3232 

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference64 LDX-3232CHAPTER 4 The LASer:LIMit:I2 command sets the LASER current limit value for

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 65 CHAPTER 4The LASer:LIMit:I4 command sets the LASER current limit valu

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference66 LDX-3232CHAPTER 4 The LASer:LIMit:MDP command sets the laser monitor photodiode powe

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 67 CHAPTER 4The LASer:LIMit:V command sets the LASER compliance voltage

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference68 LDX-3232CHAPTER 4 The LASer:MDI command sets the value of the optical power setpoint

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 69 CHAPTER 4The LASer:MDLN command enables or disables (turns off) the f

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference70 LDX-3232CHAPTER 4 The LASer:MDP command sets the value of the optical power setpoint

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 71 CHAPTER 4The LASer:MODE? query returns the selected laser control mod

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference72 LDX-3232CHAPTER 4 The LASer:MODE:ILBW command selects laser constant current mode.Pa

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 73 CHAPTER 4The LASer:OUTput command turns the laser output on or off.Pa

LIST OF TABLES04_06 LDX-3232 vii                 

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference74 LDX-3232CHAPTER 4 The LASer:RANge command selects the laser's drive current out

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 75 CHAPTER 4The LASer:SET:LDI? query returns the constant I value that i

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference76 LDX-3232CHAPTER 4 "LAS:Set:MDI?" -response: 100.0 means the laser monitor

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 77 CHAPTER 4The LASer:STEP? query is used to read back the LASer STEP va

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference78 LDX-3232CHAPTER 4 The LASer:TOLerance? query allows the programmer to determine how

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 79 CHAPTER 4The MESsage? query returns the previously stored message. Th

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference80 LDX-3232CHAPTER 4 "rad hex; *ESR?" -action: the hexadecimal radix is sele

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference04_06 LDX-3232 81 CHAPTER 4The TERM? query allows the programmer to determine whether t

COMMAND REFERENCELDX-3232 Device-Dependent Command Reference82 LDX-3232CHAPTER 4 The TIMER? query allows the programmer to determine how much time

FUNCTIONS AND FEATURESSaving and Recalling from the Front Panel04_06 LDX-3232 83 CHAPTER 5CHAPTER 5      