LASerCALLDI?, LASerCALLDV | Lightwave Communications LDX-3232

C H A P T E R 4

COMMAND REFERENCE

LDX-3232 Device-Dependent Command Reference

LASer:CAL:LDI?									FRONT PANEL
									FRONT PANEL
									REMOTE
		The LASer:CAL:LDI? query is used to determine that the LDX-3232 is ready for a value
		to be entered during the calibration cycle of the LASer:CAL:LDI mode.
Syntax Diagram
									LDI
	:	LAS			:	CAL	:		I	?
	:	LAS			:	CAL	:			?

Notes		After this query is issued and a response of 1 is received, the LDX-3232 will be ready for
		the user to enter a current value via the LASer:LDI command (see Chapter 6).
Examples		"LASer:CAL:LDI?"			-response: 1, means the LDX-3232 is ready for the user to enter a

current value via the LASer:LDI command.

“LASer:Cal:LdI?” -response: 0, means the LDX-3232 is not yet ready for the user to enter a LASER current value

LASer:CAL:LDV						FRONT PANEL
						FRONT PANEL
						REMOTE
	The LASer:CAL:LDV command is used to enter the LASER voltage measurement
	calibration mode.
Syntax Diagram
	:	LAS	:	CAL	:	LDV
Parameters	None
Notes	After this command is issued, the LDX-3232 will allow calibration of the laser voltage
	measurement. This procedure is outlined in Chapter 6.

	The LASer:CAL:LDV? query may be used to determine if the LDX-3232 is ready for the
	user to enter a value.
Examples	"Las:CAL:Ldv" -action: the LDX-3232 enters calibration mode for LASER voltage.
	"Las:Cal:LDV" -action: the LDX-3232 enters calibration mode for LASER voltage.

44 LDX-3232

Image 60

Lightwave Communications LDX-3232 manual LASerCALLDI?, LASerCALLDV, Ldi Las Cal, Las Cal Ldv

Contents

User’s Guide Page Table of Contents Remote Operation Command Reference Iv LDX-3232 List of Figures Vi LDX-3232 List of Tables Viii LDX-3232 Safety Information and the Manual General Safety Considerations Safety Symbols Safety Marking Symbols Warranty Claims for Shipping Damage Comments, Suggestions, and Problems Description of the problemModel Number Serial Number End-User Name Company Phone Fax Xiv LDX-3232 Introduction and Specifications Product Overview Installing Your LDX-3232 High Compliance Current Source AC Line Power RequirementsInitial Inspection Grounding Requirements Gpib Connector Tilt-Foot AdjustmentGpib Address Operating the LDX-3232 Precision Current Source LDX-3232 Front View Maintenance Specifications Type Pulse Width Delay TTL13 µs 12 ms Available Options and Accessories Description Model Number Applying Power to Your LDX-3232 Power On Sequence Connecting to the Laser Power On State Common Laser Cathode Photodiode Anode Back Panel LD Connector Interlock Connections Setting the PD Bias Photodiode ConnectionsGrounding Considerations Operating a Laser in Constant Current I Mode Front Panel OperationDisplay Setting Up the Precision Current Source E R a T I O N Operating a Laser in Constant Power P Mode Entering Photodiode Responsivity Values Method to calculate the responsivity is suggested below Error Indicators LDX-3232 Error Indicators Error Indicators LDX-3232 Reading the Gpib Address Changing the Gpib Address LDX-3232 Current Source Command Set Command SyntaxChanging Operation from Local to Remote OFF OLD NEW True False SET Reset LASLDI? Command Paths LDX-3232 Command Path Structure IEEE488.2 Command Commands LDX-3232 Frequently Used Commands NoneLIM Status Reporting Event and Condition RegistersOperation Complete Definition LDX-3232 Status Reporting Schematic Diagram Disabled 10 N/A Enabled 11 N/A 12 N/A 13 N/A 14 N/A 15 N/A Output Off Register LASerENABleOUTOFF nrf LASerENABleOUTOFF? Command Timing and Completion Error Messages Error Code Classifications Response Message Mode Used to create a delay in the execution of further CommandsUsed to enter the laser current calibration mode Used to enter the laser voltage calibration mode Returns status of photodiode monitor power display Enables Laser display to show parameter valuesSets the enable register for Laser conditions Returns the value of the LAS conditions enable register Used to return the optical power from monitor Used to set the constant optical power setpoint, ifUsed to enable/disable the front panel modulation input Or P optical power Returns the status of the Term command Powered upReturns the elapsed time since the timer was last reset Used to return the Laser setpoint tolerance value LDX-3232 Device-Dependent Commands Command Description Format LDX-3232 Device-Dependent Command Reference Delay ERRors? LASerCALMDCalmd LAS Calpd Responsivity CAL PD parameter setting Syntax Diagram LASerCALMD? Selected. This procedure is outlined in Chapter LASerCALLDICalibration for that bandwidth LASerCALLDI? LASerCALLDVLDI LAS CAL LAS CAL LDV True measured value. This procedure is outlined in Chapter LASerCALLDV?LASerCALMDI LASerCALMDI? LASerCOND?MDI LAS CAL IPD LASerDEC LASerDISplay LASerDISplay?LAS DIS LASDIS? LASerDISplayLDI LASerDISplayLDI?Lasdisldi LDI Voltage measurement Syntax Diagram LASerDISplayLDVLASerDISplayLDV? LASDISLDV? LASerDISplayMDI LASerDISplayMDI?LAS DIS MDI LAS DIS IPD LASerDISplayMDP LASerDISplayMDP?PPD LAS DIS MDP LASerDISplayPARAM LASerDISplaySETLAS DIS Param LAS DIS SET LASerENABleCOND LASerDISplaySET?LASDISPLAYSET? LASerENABleCOND? BitLAS Enab Cond LASerENABleEVEnt An nrf value whose sum represents the bits that are enabledAction enables the Laser status event register so that Lasenabevent LASerENABleEVEnt? LAS Enab EVE LASerENABleOUTOFF LASerENABleOUTOFF? LAS Enab Outoff LASerENABleEVEnt command Command while the condition status is constantly changingLASerEVEnt? LAS EVE LASerINC Function for the Laser output This measurement is updated approximately once every 600 ms LASerLDILASerLDI? LAS LDI LASerLDV LASerLDV?For LDV calibration LAS LDV LASerLIMitI2 LASerLIMitI2?Limit in use depends on the Laser output range selection LAS LIM Displayed, and then releasing the SET switch LASerLIMitI4LASerLIMitI4? LASLIMI4? LASerLIMitMDP LASerLIMitMDP?MDP LAS LIM LASerLIMitV LASerLIMitV? LASerMDI LASerMDI?MDI LAS IPD MDP P PD setpoint would be used LASerMDLN LASerMDLN?LAS Mdln LASerMDP LASerMDP?MDP LAS LAS Mode LAS Mode IhbwLASerMODE? LASerMODEIHBW LAS Mode MDP LASerMODEILBWLASerMODEMDP Lasmodeilbw LASerOUTput LASerOUTput?LAS OUT LASerRANge LASerRANge?LAS RAN LASRAN? Where the response is the constant I setpoint value, in mA 30 µA, for use in constant P mode with Calpd =LASerSETLDI? LASerSETMDI? Where the response is the constand PPD setpoint, in mW LASerSETMDP?LASerSTEP 100 µA LASerTOLerance command LASerSTEP?LASerTOLerance LAS TOL LASerTOLerance? MESsageSecond is the time window, in seconds MES MESsage? RADix Term 0 command is sent or the LDX-3232 is powered off RADix?RAD Means hexadecimal, and OCT means octal LDX-3232 was last powered up Time clock is independent of the Timer clockTime Since the last TIMER? query was issued TimerLast TIMER? query is returned Seconds since the last TIMER? query was issued Functions and Features Saving and Recalling from the Front Panel Using the Laser Compliance Voltage Adjustment Saving and Recalling Under Remote Operation Using the LDX-3232 Current Source’s Trigger Function LDX-3232 Rear Panel Modulating the Laser Current Source BNC Interlock Usage Example Modulating the Laser Current Source Functions and Features Calibration and Troubleshooting Calibration Overview Description Manufacturer/Model Specification Recommended EquipmentDMM Local Calibration of the LDX-3232 Current Source Current Source CalibrationRange Current Limit IPD Current Calibration Constant power CAL PDSet equal to zero IPD Setpoint Laser Mode Laser Forward Voltage Measurement Calibration2000 mA Set to FS full scale of range Gpib Command Remote Calibration of the LDX-3232 Current SourceLimit Lasldi nrf value command IPD Setpoint Function State Gpib Command Troubleshooting Guide GeneralEEPROM, Lllll will be displayed on the display the laser Current source must be recalibrated Feature can be defeated via the Lasenableoutoff Command 101 Response Message