1. Manuals
  2. Brands
  3. ILX Lightwave Manuals
  4. Control Unit
  5. LDC-3916558
  6. User manual

ILX Lightwave LDC-3916558 User Manual

3a current source te module
Hide thumbs Also See for LDC-3916558:
Table of Contents

Advertisement

Quick Links

Download this manual
User's Guide
3A Current Source TE Module
LDC-3916558
ILX Lightwave Corporation
·
P. O. Box 6310
·
Bozeman, MT, U.S.A. 59771
·
U.S. & Canada:
1-800-459-9459 ·
International
Inquiries: 406-556-2481
·
Fax 406-586-9405
·
ilx.custhelp.com
www.ilxlightwave.com
70033202 June 2005

Advertisement

Table of Contents
loading

Related Manuals for ILX Lightwave LDC-3916558

Summary of Contents for ILX Lightwave LDC-3916558

  • Page 1 User’s Guide 3A Current Source TE Module LDC-3916558 ILX Lightwave Corporation · P. O. Box 6310 · Bozeman, MT, U.S.A. 59771 · U.S. & Canada: 1-800-459-9459 · International Inquiries: 406-556-2481 · Fax 406-586-9405 · ilx.custhelp.com www.ilxlightwave.com 70033202 June 2005...

  • Page 3: Table Of Contents

    Setting Sensor Current ......... 13 LDC-3916558...
  • Page 4 GPIB Commands ..........30 LDC-3916558 Device-Dependent Commands ......33...
  • Page 5 Figure 3.2 LDC-3916558 Status Condition Registers ......23 Figure 3.3 LDC-3916558 Event Status Registers ......24 Figure 4.1 Command Description Format .
  • Page 6 L I S T O F F I G U R E S LDC-3916558...
  • Page 7 Table 2.3 TEC Error Indicators ........17 Table 3.1 LDC-3916558 Often Used Commands..... 21 Table 3.2 LDC-3916558 TEC Output Off Register Contents .
  • Page 8 L I S T O F TA B L E S LDC-3916558...

  • Page 9: Introduction And Specifications

    It also contains some maintenance information and specifications. If any of the following symptoms exist, or are even suspected, remove the LDC-3916558 Module from service. Do not use the module until trained service personnel can verify safe operation.

  • Page 10: Initial Inspection

    1 to 127. Initial Inspection When you receive your LDC-3916558 3-Amp Temperature Control Module, check for shipping damage immediately. Verify that the module has an ESD protective hood on the 15-pin D-sub and that it is enclosed in an ESD safe handling bag.

  • Page 11: Specifications

    Thermistor Resistance (10 uA setting) Range: 0.01 to 450.00 kΩ Accuracy +0.05 kΩ Thermistor Resistance (100 uA setting) Range: 0.001 to 45.000 kΩ Accuracy +0.005 kΩ TE Current Range: -3.00 to 3.00 A TE Current Accuracy: +0.04 A 08_05 LDC-3916558...
  • Page 12 10.Using a 10 kΩ thermistor, controlling an LDM-4412 mount over -5 C to 90 11.Voltage measurement accuracy while driving calibration load; accuracy is dependent upon load used. In keeping with our commitment to continuous improvement, ILX Lightwave reserved the right to change specifications without notice or liability for such changes.

  • Page 13: Operations

    C H A P T E R PERATIONS This chapter introduces you to the operation of the LDC-3916558 front panel control functions. It shows you how to use the 3916558 to control a load temperature. It also gives instructions for connecting a load to a temperature controller's output.

  • Page 14: Tec Grounding Considerations

    Analog Ground is provided at pin 9 as a convenient reference when making measurements or troubleshooting a system, but it is not normally required. Pins 10-15 are reserved by ILX Lightwave for diagnostic purposes and must not be connected.

  • Page 15: Operating The Temperature Controllers From The Front Panel

    Operating the Temperature Controllers from the Front Panel Operating the Temperature Controllers from the Front Panel This section describes how to operate the LDC-3916558 3-Amp Temperature Controller from the front panel of either the LDC-3916 or LDC-3908 mainframe. It begins by reviewing the front panel operations and continues by showing you an example.

  • Page 16: Example Setup

    TEC's menus. To get to the TEC's first menu, press the F2 softkey: it is "attached" to the "TEC" box in the Channel menu. The next menu is the TEC page 1 menu. Figure 2.3 Display Area Figure 2.3 Channel Menu LDC-3916558...

  • Page 17: Figure 2.4 Tec P1 Menu

    Press the hardkey until the ILim parameter is highlighted. Enter 3.0 using the numeric keypad. The RSet parameter is for constant resistance control mode, and the ISet parameter is for constant current mode. 08_05 LDC-3916558...

  • Page 18: Figure 2.6 Tec P3 Menu

    Highlight the Channel parameter and turn the knob (or press the INC hardkey) to select the desired channel number, All to choose all channels, or None so that the TEC will not turn off any laser current sources. LDC-3916558...

  • Page 19: Table 2.1 Tec Controllable Laser Sources

    "ON." The text box reports the controller's on/off status. Note: To check the firmware version in any module, select the correct channel number in the CHAN menu, then press the following keys in this order: Enter For information regarding firmware upgrades, contact ILX Customer Support. 08_05 LDC-3916558...

  • Page 20: Guidelines

    Another control mode that is available in the 3916558 is constant-current mode. In general, the amount of heat a TEC module pumps depends on its drive current. If you have a situation where a constant heat load must be removed or added, then you might consider using constant current mode. LDC-3916558...

  • Page 21: Setting Gain

    To see why maximizing the voltage variation is an issue, refer to Figure 2.8, which shows resistance as a function of temperature for a thermistor. The values shown were selected for simplicity in this example, and may not reflect real thermistor values. 08_05 LDC-3916558...

  • Page 22: Setting Safety Limits

    Amperes. It is normal for the controller to be in current limit, especially when the load temperature is far from the setpoint. An indication, "ILim," will appear on the screen when the controller is in a current-limit condition. LDC-3916558...
  • Page 23 1 menu. Using GPIB, you can disable the high-temperature limit from turning off the controller. See Chapters 3 and 4 for more information about disabling or enabling conditions that will turn off the controller. 08_05 LDC-3916558...

  • Page 24: Default Settings

    Chan page, or the respective channel's setup pages. The Error Indicator Code will clear when you exit any page where it appears. Error Indicator codes are summarized in Table 2.3. Some of these errors can be disabled using GPIB. See Chapter 4 for more information. LDC-3916558...

  • Page 25: Table 2.3 Tec Error Indicators

    TEC output was on. The errors that are enabled in the "Output Off Enable" register by default at power-up are Open Sensor, TEC Module Open, Temperature Limit, and Sensor Shorted. The Output Off Enable register is not saved at power-down. 08_05 LDC-3916558...
  • Page 26 O P E R A T I O N S C H A P T E R TEC Error Indicators LDC-3916558...

  • Page 27: Remote Operations

    LDC-3916/LDC-3908 mainframe (see either the LDC-3916 or LDC-3908 Instruction Manual Chapter 3 "Operating in Remote Control"). Figure 3.1 shows all of the commands that are usable by the LDC-3916558 module in conjunction with the LDC-3916 and LDC-3908. LDC-3916558...
  • Page 28 :SET MES? *PUD? :OUT *RCL :OUT? :ITE :ITE? RAD? *RST SECURE *SAV :SEN TERM *SRE :SEN? TERM? *SRE? :SYNCI? TIME? :SYNCR? *STB? TIMER? :SYNCT? *TST? :CONV :SYNCV? *WAI :TOL :TOL? Figure 3.1 LDC-3916558 3-Amp Temperature Controller Command Path Structure LDC-3916558...

  • Page 29: Ldc-3916558 3-Amp Temperature Controller Often Used Commands

    Table 3.1 illustrates the minimum set of settings that must be entered for proper operation of a temperature controller in the LDC-3916558: control mode, setpoint, high-temperature limit, current limit, sensor type, and control loop gain. Command Timing and Completion All commands for the LDC-3916558 module are sequential.

  • Page 30: Status Reporting

    Status Registers The temperature controller in an LDC-3916558 has its own Condition register and Event register. These registers indicate the existence or occurrence of conditions or events of interest. An example of a condition is "Current drive is in current limit."...

  • Page 31: Figure 3.2 Ldc-3916558 Status Condition Registers

    7 – Module Open 15 - n/a Figure 3.2 LDC-3916558 Status Condition Registers The bits in the module's Condition Register reflect as closely as possible the state of the instrument. These bits are therefore dynamic: they are set or cleared as conditions come or go.

  • Page 32: Figure 3.3 Ldc-3916558 Event Status Registers

    7 – Output Circuit Opened 15 - n/a Figure 3.3 LDC-3916558 Event Status Registers The bits in a module's Event Registers are "sticky": when an event occurs, the corresponding bit will remain set until the user reads the Event Register.

  • Page 33: Output Off Registers

    The Output Off Enable Registers allow you to specify the conditions that cause the temperature controllers' outputs to be automatically turned off. The events and conditions that may be selected to turn off the outputs are shown in Table 3.2. Table 3.2 LDC-3916558 TEC Output Off Register Contents Bit Number Condition...

  • Page 34: Error Messages

    Error Messages This section contains descriptions of the errors that are specific to the LDC-3916558 modules. These are the error codes that the module reports in response to the "MODERR?" query. Refer to either the LDC-3916 or the LDC- 3908 ("Mainframe") Instruction Manual, Chapter 3, for a list of LDC-3916 and LDC-3908 mainframe error codes and descriptions (the codes returned in response to the "ERR?"...
  • Page 35 Internal error: Over-temperature error found on internal sensor E-713 Internal error: Power brown-out error detected E-714 Internal error: Writing to display E-802 Calibration error: Measurement entered before calibration was ready E-803 Calibration error: Invalid sensor specified for calibration 08_05 LDC-3916558...
  • Page 36 R E M O T E O P E R A T I O N S C H A P T E R Error Messages LDC-3916558...

  • Page 37: Command Reference

    LDC-3916558 3-Amp Temperature Control Module. This chapter is divided into two parts. The first part contains an overview of the remote commands used by the LDC-3916558 . The second part contains all of the LDC-3916558 commands in alphabetical order. Table 4.1 lists the commands for the LDC-3916558 modules.

  • Page 38: Gpib Commands

    Enters the value for the Event Status Enable Register TEC:ENAB:EVE? none Queries the contents of the Event Status Enable Register TEC:ENAB:OUTOFF Enters the value for the Output Off Enable Register TEC:ENAB:OUTOFF? none Queries the contents of the Output Off Enable Register LDC-3916558...
  • Page 39 TECSYNCT? NONE Synchronized measurement; returns the thermistor temperature in TECSYNCV? NONE Synchronized measurement; returns the measured TE voltage in volts TEC:T Enters the constant-temperature setpoint TEC:T? none Queries the measured temperature TEC:TOL Enters the tolerance parameters 08_05 LDC-3916558...
  • Page 40 Queries the measured TE voltage MODERR? none Returns the error codes (up to 10) from the module MODIDN? none Returns identification data from the module MODPUD Used at factory to set product information MODPUD? none Returns factory-set product information LDC-3916558...

  • Page 41: Ldc-3916558 Device-Dependent Commands

    LDC-3916558 Device-Dependent Commands This section contains all of the device-dependent commands for the LDC-3916558 3-Amp Temperature Control Modules, listed in alphabetical order. Sub-sections for each path are presented, listing the commands that are legal for that path. See Chapter 3, Figure 3.1 for the command path tree structure.
  • Page 42 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands The following pages contain a reference for the device-dependent commands of the LDC-3916558 3-Amp Temperature Control module. It contains useful information for remote operation of the module. STATMENU:LINEn: RONT...
  • Page 43 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands STATMENU:LINEn:TEMP RONT ANEL EMOTE The STATMENU:LINEn:TEMP command sets the measurement that is to be displayed on line n of the status menu to tec temperature (TEMP)..
  • Page 44 “STATMENU:LINE1:TEV” - response: tec forward voltage is displated on line 1 of the status menu. RONT ANEL EMOTE The TEC: command path is used to access the LDC-3916558 3-Amp Temperature Controller’s TEC commands. The following command paths may be reached from the TEC: command path. TEC:CAL: TEC:ENABle: TEC:LIMit:...
  • Page 45 None. Notes If this command is issued while the LDC-3916558 3-Amp Temperature Controller is in a TEC calibration, the calibratio will be terminated and the module will operate with the same calibraiton values as before the calibration mode was started This command is intended for use after a false or invalid calibration measurement is entered, or to exit calibration mode before any measurements have been entered.
  • Page 46 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:CAL:DEFAULT RONT ANEL EMOTE The TEC:CAL:DEFAULT command sets all of the selected module’s TEC calibration constants to default values.
  • Page 47 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:CAL:MEAS RONT ANEL EMOTE The TEC:CAL:MEAS command is used to enter measured value during the selected module’s TEC calibration procedure.
  • Page 48 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:CAL:STATus? RONT ANEL EMOTE The TEC:CAL:STATus? query is to determine whether the selected module is ready for a calibration value.
  • Page 49 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:COND? RONT ANEL EMOTE The TEC:COND? query returns the contents of the selected module’s TEC Condition Status register.
  • Page 50 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:CONST RONT ANEL EMOTE The TEC:CONST command sets the Steinhart-Hart coefficients for the selected module’s TEC thermistor.
  • Page 51 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:CONV:R RONT ANEL EMOTE The TEC:CONV:R command converts thermistor resistance (kΩ) to temperature ( <white...
  • Page 52 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:CONV:T? RONT ANEL EMOTE The TEC:CONV:T? query converts temperature ( C) to thermistor resistance (kΩ) and returns the value of the most recent conversion..
  • Page 53 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:ENABle:COND RONT ANEL EMOTE The TEC:ENABle:COND command sets the selected module’s TEC Condition Status Enable register.
  • Page 54 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:ENABle:COND? RONT ANEL EMOTE The TEC:ENABle:COND? query returns the value of the selected module’s TEC Condition Status Enable register.
  • Page 55 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:ENABle:EVEnt RONT ANEL EMOTE The TEC:ENABle:EVEnt command sets the selected module’s TEC Event Status Enable register.
  • Page 56 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:ENABle:EVEnt? RONT ANEL EMOTE The TEC:ENABle:EVEnt? query returns the contents of the selected module’s TEC Event Status Enable register.
  • Page 57 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:ENABle:OUTOFF RONT ANEL EMOTE The TEC:ENABle:OUTOFF command sets the selected module’s TEC Output Off Enable register.
  • Page 58 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:ENABle:OUTOFF? RONT ANEL EMOTE The TEC:ENABle:OUTOFF? query returns the contents of the selected module’s TEC OUtput Off Enable register.
  • Page 59 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:EVEnt? RONT ANEL EMOTE The TEC:EVEnt? query returns the contents of the selected module’s TEC Event Status register.
  • Page 60 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:GAIN? RONT ANEL EMOTE The TEC:GAIN? query returns the value of the selected module’s TEC control loop gain.
  • Page 61 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:LASOFF RONT ANEL EMOTE The TEC:LASOFF command configures the TEC to turn off an external laser current source.
  • Page 62 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:LIMit:ITE RONT ANEL EMOTE The TEC:LIMit:ITE command sets the selected module’s TEC current limit value.
  • Page 63 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:LIMit:THI? RONT ANEL EMOTE The TEC:LIMit:THI? query returns the value of the selected module’s TEC high temperature limit setting.
  • Page 64 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:MODE:R RONT ANEL EMOTE The TEC:MODE:R command selects constant thermistor resistance mode for the selected module’s TEC.
  • Page 65 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:MODE? RONT ANEL EMOTE The TEC:MODE? query returns the selected module’s TEC control mode.
  • Page 66 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:OUTput? RONT ANEL EMOTE The TEC:OUTput? query returns the selected module’s TEC output state.
  • Page 67 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:R? RONT ANEL EMOTE The TEC:R? query returns the value of the selected module’s TEC measured thermistor resistance.
  • Page 68 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:SEN? RONT ANEL EMOTE The TEC:SEN? query returns the selected module’s TEC thermistor sense current.
  • Page 69 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:SET:R? RONT ANEL EMOTE The TEC:SET:R? query returns the selected module’s TEC constant thermistor resistance set point.
  • Page 70 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:SYNCI? RONT ANEL EMOTE The TEC:SYNCI? query returns the selected channel’s measured TE current, in Amps.
  • Page 71 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:SYNCT? RONT ANEL EMOTE The TEC:SYNCT? query returns the selected channel’s measured thermistor temperature in...
  • Page 72 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands TEC:T RONT ANEL EMOTE The TEC:T command sets the selected module’s TEC constant-temperature setpoint.
  • Page 73 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands tolerance window are C. In constant resistance mode, the window units are kΩ. In constant current mode, the window is in Amps.
  • Page 74 C O M M A N D R E F E R E N C E C H A P T E R LDC-3916558 Device-Dependent Commands LDC-3916558...

  • Page 75: Troubleshooting

    C H A P T E R ROUBLESHOOTING This chapter describes calibration of your LDC-3916558 3-Amp Temperature Control Module. Descriptions of the required test instruments, calibration conditions, and the detailed procedures for calibration of the instrument's Temperature Controllers are included. A troubleshooting guide is also offered for common failure symptoms.

  • Page 76: Calibration Overview

    °C. When necessary, however, the 3916558 3-Amp Temperature Controllers may be calibrated at their intended use temperature if this is within the specified operating temperature range of 0 - 40 The LDC-3916558 should be allowed to warm up for at least 1 hour at half-power before calibration. Recommended Equipment Recommended test equipment for calibrating the LDC-3916558 3-Amp Temperature Control module is listed in Table 5.1.

  • Page 77: Local Calibration Of The 3916558 3-Amp Temperature Controllers

    Follow a similar procedure for the 100 µA sensor calibration, except use the Therm100 Cal soft key, and use a 4 kΩ and a 40 kΩ resistor. 08_05 LDC-3916558...

  • Page 78: Ite Current Calibration

    10 seconds at each step. After you have entered the last actual current, the internal calibration procedure will perform the calibration for the current setpoint, measurement, and limit circuits. The screen will then display a message indicating that the calibration has finished. LDC-3916558...

  • Page 79: Te Voltage Calibration

    33% of positive output range. Measure the voltage across the load resistor, enter this measurement in the "VReal" adjust area, and press (ADJUST) ENTER. The internal cal procedure will calibrate the TE voltage measurement circuit, and the screen will display a "Completed" message. 08_05 LDC-3916558...

  • Page 80: Remote Calibration Of The 3916558 3-Amp Temperature Controllers

    Remote Calibration of the 3916558 3-Amp Temperature Controllers The LDC-3916558 3-Amp Temperature Control Modules can be calibrated remotely using the GPIB Interface. All of the required calibration commands are listed in Table 4.1 in Chapter 4. The procedures below are general guidelines for...
  • Page 81 Follow the same procedure for the 100 µA sensor calibration, except use the following command to start the cal: TEC:CAL:SEN 1 For the 100 A sensor calibration, use 4 kΩ for the first resistor and 40 kΩ for the second. 08_05 LDC-3916558...

  • Page 82: Ite Current Calibration

    "0" to indicate that it is not yet ready for another measurement. This will occur after each time a new measurement is entered. The controller will set the output current to approximately 30% of its negative output range. Allow the current to settle for at least 10 seconds. LDC-3916558...
  • Page 83 After you have entered the last measured current, the internal calibration procedure will perform the calibration for the current setpoint, measurement, and limit circuits. The cal procedure will set the status to the value "2" to indicate that it has finished. 08_05 LDC-3916558...

  • Page 84: Te Voltage Calibration

    After you have entered the second measured voltage, the internal calibration procedure will perform the calibration for the voltage measurement circuit. The cal procedure will then set the status to the value "2" to indicate that it has finished. This ends the calibration guide. LDC-3916558...

  • Page 85: Troubleshooting Guide

    Read the symptom descriptions, and follow the steps for the corrective actions that apply. If you encounter problems that are beyond the scope of this guide, contact your ILX Lightwave customer service representative. Symptom...
  • Page 86 T R O U B L E S H O O T I N G C H A P T E R Troubleshooting Guide LDC-3916558...

Table of Contents