THORLABS Blueline Series Operating Manual
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THORLABS Blueline Series Operating Manual

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Summary of Contents for THORLABS Blueline Series

  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 Operating Manual Thorlabs Blueline™ Series PRO8000 (-4) / PRO800 Current module LDC8xxx 2003 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 Version: 2.11 Date: 13.10.2003 © Copyright 2003, Thorlabs GmbH Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 4: Table Of Contents

    ontents Page General description of the current module LDC8xxx 1.1 Safety 1.2 Warranty 1.3 Features 1.3.1 Safety measures for the laser diode 1.3.2 General functions 1.4 Technical data 1.4.1 Common data LDC8xxx 1.4.2 Individual technical data 1.5 Operating elements at the front panel of the module 1.6 Pre-settings 1.6.1 Setting limit values...
  • Page 5 3.1.1 Nomenclature 3.1.2 Data format 3.2 Commands 3.2.1 Select the module slot 3.2.2 Calibrating a photo diode (CALPD) 3.2.3 Programming the laser diode current (ILD) 3.2.4 Programming the monitor diode current (IMD) 3.2.5 Switching the output on and off (OUTP) 3.2.6 Selecting the laser diode polarity (LDPOL) 3.2.7...
  • Page 6 5.3 Certifications and compliances 5.4 Addresses Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 7 We and our international partners are looking forward to hearing from you. In the displays shown by the PRO8 you may find the name PROFILE. PROFILE was the name of the manufacturer before it was acquired by Thorlabs and renamed to Thorlabs GmbH.

  • Page 8: General Description Of The Current Module Ldc8Xxx

    PRO8000, PRO8000-4 or PRO800. All modules must only be operated with duly shielded connection cables. Only with written consent from Thorlabs may changes to single components be carried out or components not supplied by Thorlabs be used. This precision device is only dispatchable if duly packed into the complete original packaging including the plastic form parts.
  • Page 9 1.1 Safety ! Attention ! Semiconductor laser modules can deliver up to several 100mW of (maybe) invisible laser radiation! When operated incorrectly, this can cause severe damage to your eyes and health! Be sure to pay strict attention to the safety recommendations of the appropriate laser safety class! This laser safety class is marked on your PRO8000 / PRO800 plug-in module or on your external laser source used.

  • Page 10: Warranty

    1.2 Warranty 1.2 Warranty Thorlabs GmbH warrants material and production of the LDC8xxx modules for a period of 24 months starting with the date of shipment. During this warranty period Thorlabs GmbH will see to defaults by repair or by exchange if these are entitled to warranty.

  • Page 11: Features

    1.3 Features 1.3 Features 1.3.1 Safety measures for the laser diode To protect the connected laser diodes the laser diode control system PRO8000 (-4) / 800 and the LDC8xxx laser diode controller contain the following protection circuits: • Softstart when switching on the laser diode current Protection against capacitive and inductive parasitic elements (switching peaks).
  • Page 12 • Key-operated power switch Protection against unauthorized or accidental use. • LabVIEW®- and LabWindows/CVI®-driver For the PRO8000 (-4) / PRO800 Thorlabs supplies LabVIEW®- and LabWin- dows/CVI®-drivers for MS Windows 32. Please refer to our homepage for latest driver updates. http://www.thorlabs.com Current module LDC8xxx / page 5 Artisan Technology Group - Quality Instrumentation ...

  • Page 13: General Functions

    1.3 Features 1.3.2 General functions The current modules LDC8xxx are bipolar current sources for laser diodes. The different module types operate in the same way, they only differ in maximum current, resolution and accuracy. (Refer to chapter 1.4, "Technical data" starting on page 7) The current modules LDC8xxx contain a monitor diode input realized as trans- impedance amplifier (input impedance 0 Ω).

  • Page 14: Technical Data

    1.4 Technical data 1.4 Technical data (All technical data are valid at 23 ± 5°C and 45 ±15% humidity) 1.4.1 Common data LDC8xxx Resolution 16 Bit Power control 10 µA ... 5 mA Range of monitor current I 0.1 µA Resolution ±...

  • Page 15: Individual Technical Data

    1.4 Technical data 1.4.2 Individual technical data 1.4.2.1 LDC8001 ULN Current control 0 ... ± 100 mA Range of laser current I > 2.5 V Compliance voltage Setting resolution 1.5 µA ± 0.05% Setting accuracy (f.s.) 1 µA Measurement resolution <...
  • Page 16 1.4 Technical data 1.4.2.2 LDC8002 Current control 0 ... ± 200 mA Range of laser current I > 5 V Compliance voltage Setting resolution 3 µA ± 0.05% Setting accuracy (f.s.) 1 µA Measurement resolution < 3 µA Noise without ripple (10 Hz ... 10 MHz, rms) <...
  • Page 17 1.4 Technical data 1.4.2.3 LDC8005 Current control 0 ... ± 500 mA Range of laser current I > 5 V Compliance voltage Setting resolution 7.5 µA ± 0.05% Setting accuracy (f.s.) 15 µA Measurement resolution < 5 µA Noise without ripple (10 Hz ... 10 MHz, rms) <...
  • Page 18 1.4 Technical data 1.4.2.4 LDC8010 Current control 0 ... ± 1 A Range of laser current I > 5 V Compliance voltage Setting resolution 15 µA ± 0.1% Setting accuracy (f.s.) 15 µA Measurement resolution < 10 µA Noise without ripple (10 Hz ... 10 MHz, rms) <...
  • Page 19 1.4 Technical data 1.4.2.5 LDC8040 Current control 0 ... ± 4 A Range of laser current I > 5 V Compliance voltage Setting resolution 70 µA ± 0.1% Setting accuracy (f.s.) 130 µA Measurement resolution < 50 µA Noise without ripple (10 Hz ... 10 MHz, rms) <...
  • Page 20 1.4 Technical data 1.4.2.6 LDC8080 Current control 0 ... ± 8 A Range of laser current I > 5 V Compliance voltage Setting resolution 130 µA ± 0.3% Setting accuracy (f.s.) Measurement resolution 250 µA < 100 µA Noise without ripple (10 Hz ... 10 MHz, rms) <...

  • Page 21: Operating Elements At The Front Panel Of The Module

    1.5 Operating elements at the front panel of the module 1.5 Operating elements at the front panel of the module Modulation input Connector jack for the laser diode Potentiometer for I Figure 1 Front panel of an LDC module NOTE This figure is valid for all current modules with the exception of the LDC8080 which is of double width and uses a 15-pin HD-sub jack instead of the 9-pin D-sub jack depictured here.

  • Page 22: Pre-Settings

    1.6 Pre-settings 1.6 Pre-settings 1.6.1 Setting limit values To protect the laser diode the maximum possible current can be limited. Three ways to limit the current are possible: hardware limit, software limit and limit for optical power. Hardware limit I The hardware limit I is set with the potentiometer marked I at the front panel of...
  • Page 23 1.6 Pre-settings Software limit I The software limit I is set and changed manually in the channel menu of the module or remote via control computer. Software limit I 13.40mA LD off Imax= 200.0mA Iconst I = 188.22mA CHANGE The software limit I effects the current regulation of the module via D/A converters and yields exactly the same protective function as the hardware limit.
  • Page 24 1.6 Pre-settings Limit value for the optical power P (monitor diode current M When cooled, some laser diodes can reach such a high efficiency that danger of thermal destruction of the mirrors occurs if the maximum injection current allowed is used.

  • Page 25: Connecting Components

    1.7 Connecting components 1.7 Connecting components 1.7.1 Pin assignment LDC8001 to LDC8040 Figure 2 female 9-pole D-Sub pin assignment LDC8001 ... LDC8040 Connector Interlock, status display output for interlock and status LASER ON/OFF pin 1 ground Laser diode laser diode cathode (with polarity AG) laser diode anode (with polarity CG) laser diode ground Monitor diode...

  • Page 26: Pin Assignment Ldc8Xxx With True Bipolar Option

    1.7 Connecting components 1.7.2 Pin assignment LDC8xxx with true bipolar option Figure 3 9-pole female D-SUB jack Connector Interlock, status display output for interlock and status LASER ON/OFF pin 1 ground Laser diode laser diode output n.c. laser diode ground Monitor diode monitor diode input monitor diode ground...
  • Page 27 1.7 Connecting components We recommend to use separate lines drilled in pairs (twisted pair) in a common shield for laser diode current, monitor diode current and laser voltage measurement. The shield has to be connected to ground potential (pin 3). If an external monitor diode is used, it must be connected via coaxial cable with the shield to pin 2 and the inner conductor to pin 4.

  • Page 28: Pin Assignment Ldc8080

    1.7 Connecting components 1.7.3 Pin assignment LDC8080 Figure 4 15-pole female HD-Sub pin assignment of LDC8080 Connector Interlock, status display output for interlock and status LASER ON/OFF pin 6 ground Laser diode 1,2,7 laser diode cathode (with polarity AG) 4,5,10 laser diode anode (with polarity CG) 3,8,9 laser diode ground...
  • Page 29 1.7 Connecting components To connect the laser all three pins (1,2,7 and 3,8,9 or 4,5,10 and 3,8,9) must always be used. We recommend using separate lines drilled in pairs (twisted pair) in a common shield for laser diode current (3 x), monitor diode current and laser voltage measurement respectively.

  • Page 30: Connecting Laser- And Monitor Diodes

    1.7 Connecting components 1.7.4 Connecting laser- and monitor diodes LDC8001 ULN to LDC8040 Connect laser and monitor diode to the connector jack of the LDC8xxx. (Refer to chapter 1.7.1, "Pin assignment LDC8001 to LDC8040" on page 18). The lines for voltage measurement of the laser diode (pin 6 and pin 9) must be connected as closely as possible to the laser diode to avoid measurement errors.
  • Page 31 1.7 Connecting components LDC8xxx (True bipolar option) Connect laser and monitor diode to the connector jack of the LDC8xxx. (Refer to chapter 1.7.2, "Pin assignment LDC8xxx with true bipolar option" on page 19). The lines for voltage measurement of the laser diode (pin 6 and pin 9) must be connected as closely as possible to the laser diode to avoid measurement errors.
  • Page 32 1.7 Connecting components LDC8080 Connect laser and monitor diode to the connector jack of the LDC8080. (Refer to chapter 1.7.3, "Pin assignment LDC8080" on page 21). The lines for voltage measurement of the laser diode (pin 11 and pin 14) must be connected as closely as possible to the laser diode to avoid measurement errors.

  • Page 33: Connecting Interlock And Status Display

    1.7 Connecting components 1.7.5 Connecting interlock and status display Interlock, cable damage monitoring Pin 1 and pin 5 (LDC8001 to LDC8040) or pin 6 and 15 (LDC8080) of the connector jack serve as safety connectors to determine whether the current output for the laser diode may be switched on.
  • Page 34 1.7 Connecting components 0..430 Ω about 0.5 kΩ Figure 9 Interlock connection of LDC8080 NOTE Using a resistor above 430 Ω- without LED (or if the LED is incorrectly poled) may lead to malfunction as the status of the interlock is then in an undefined range.

  • Page 35: Using The Modulation Input

    1.7 Connecting components 1.7.6 Using the modulation input The current modules of the PRO8000 (-4) / PRO800 system have an modulation input which either modulates the laser diode current or the optical power, depending on the mode of operation (constant current or constant power). The modulation current is added to the set values of current or power.

  • Page 36: Operating The Ldc8Xxx

    2.1 Functions in the main menu 2 Operating the LDC8xxx Before turning on the laser current please refer to chapter 1.6, "Pre-settings" starting on page 15 NOTE With the LDC8xxx modules all settings are executed immediately. It is not necessary to confirm the set values. 2.1 Functions in the main menu 2.1.1 Display The main menu displays the channel number and the two most important operating...

  • Page 37: Selecting A Module

    2.1 Functions in the main menu 2.1.2 Selecting a module Select a module for further input by setting the cursor to the channel number of the desired module using the softkeys Pressing will lead to the channel menu (Refer to chapter 2.2, "Functions in the channel menu" starting on page 31) 2.1.3 Setting the main parameter To set the main parameter in the main menu the corresponding module is selected with the cursor (here: CH2):...

  • Page 38: Functions In The Channel Menu

    2.2 Functions in the channel menu 2.2 Functions in the channel menu The channel menu is opened from the main menu by pressing the key Pressing again will return you to the main menu. 2.2.1 Display In the channel menu all essential parameters of the selected module will appear: channel no.

  • Page 39: Changing Parameters

    2.2 Functions in the channel menu The operating mode / status field shows the actual status: Constant current mode Iconst Constant power mode Pconst $ILIM$ Current limit reached during operation $PLIM$ Optical power limit reached during operation 2.2.2 Changing parameters To set or change a numerical parameter in the channel menu the respective line is selected with the cursor: Example: I...

  • Page 40: Selecting The Polarity Of The Laser And The Monitor Diode

    2.2 Functions in the channel menu 2.2.3 Selecting the polarity of the laser and the monitor diode If the polarity of the laser diode should be changed, the parameter LDPOL = must be selected in the channel menu. It can than be changed to the desired polarity. Should the polarity of the monitor diode be changed, the parameter PDPOL = has to be selected in the channel menu.

  • Page 41: Selecting Constant Current Or Constant Power Mode

    2.2 Functions in the channel menu 2.2.5 Selecting constant current or constant power mode The current modules LDC8xxx offer two operating modes for the laser diode. In constant current mode the laser diode current will be kept constant. If the temperature of the laser changes the optical power will change too, since the laser efficiency will change.

  • Page 42: Selecting A Tec Module For Temperature Protection

    2.2 Functions in the channel menu 2.2.6 Selecting a TEC module for temperature protection If the laser diode shall only operate within a specific temperature range (window) this could be carried out by using the temperature window function of a TED8xxx module. (Refer to manual of the TED8xxx) Therefore this TED8xxx must be assigned to the LDC8xxx as described here.

  • Page 43: Bias Voltage For The Monitor Diode

    2.2 Functions in the channel menu 2.2.8 Bias voltage for the monitor diode If required, the monitor diode may be driven with a bias voltage of 5V. ! Attention ! Before switching on bias voltage make sure that the photodiode is poled correctly (inverse direction).

  • Page 44: Switching On And Off

    2.3 Switching on and off 2.3 Switching on and off First select the module in the main menu. ! Attention ! Before switching on a current module LDC8xxx first set the laser diode current I (hardware limit) for the applied laser diode with a screwdriver.

  • Page 45: Error Messages

    2.4 Error messages 2.4 Error messages Error messages are shown in the bottom line of the display regardless of whether you are in the main menu or channel menu. If an error occurs the display shows for example: 22.00mA LD on Imax= 50.0mA Iconst I...
  • Page 46 2.4 Error messages Possible error messages for a LDC8xxx module are: interlock Interlock line has opened / is open open ckt Wiring to the laser has opened (danger!) Module is too hot. Operation is possible again after cooling down Vcc fail Internal supply voltage fails - module is damaged NOT IF LD ON Certain changes of parameters are not allowed with laser...

  • Page 47: Communication With A Control Computer

    3.1 General notes on remote control 3 Communication with a control computer 3.1 General notes on remote control The description of the mainframe of the PRO8000 (-4) / PRO800 includes all instructions of how to prepare and execute the programming of the system via IEEE 488 computer interface.

  • Page 48: Nomenclature

    3.1 General notes on remote control 3.1.1 Nomenclature Program messages (PC ⇒ PRO8000 (-4)) are written in inverted commas: "*IDN?" Response messages (PRO8000 (-4) ⇒ PC) are written in brackets: [:SLOT 1] There is a decimal point: 1.234 Parameters are separated with comma: "PLOT 2,0"...
  • Page 49 3.1 General notes on remote control Numeric response data Type 2 (<NR2>) Is a numerical value with or without sign in floating point notation without exponent. Examples: +1.1 -22.1 14356.789432 (Refer to IEE488.2 (8.7.3)) Numeric response data Type 3 (<NR3>) Is a numerical value with or without sign in floating point notation with exponent with sign .

  • Page 50: Commands

    3.2 Commands 3.2 Commands 3.2.1 Select the module slot ":SLOT <NR1>" Selects a slot for further programming <Nr1>=1…8 (PRO8000), 1…2 (PRO800) ":SLOT?" Queries the selected slot [:SLOT <NR1><LF>] 3.2.2 Calibrating a photo diode (CALPD) Programming: ":CALPD:SET <NR3>" Program the sensitivity calibration factor (η) of the monitor diode (A/W) Reading: ":CALPD:SET?"...

  • Page 51: Programming The Laser Diode Current (Ild)

    3.2 Commands 3.2.3 Programming the laser diode current (ILD) Programming: ":ILD:SET <NR3>" Program the laser diode set current ":ILD:START <NR3>" Program the laser diode start current for “ELCH ” ":ILD:STOP <NR3>" Program the laser diode stop current for “ELCH” ":ILD:MEAS <NR1>" Program the laser diode current as measurement value on position <NR1>...
  • Page 52 3.2 Commands ":ILD:START?" Read the laser diode start current for “ELCH” [:ILD:START <NR3><LF>] ":ILD:STOP?" Read the laser diode stop current for “ELCH” [:ILD:STOP <NR3><LF>] ":ILD:MEAS?" Read the position of the laser diode current as measurement value in the output string for “ELCH” (1..8, 0 if not selected) [:ILD:MEAS <NR1><LF>] Current module LDC8xxx / page 45...

  • Page 53: Programming The Monitor Diode Current (Imd)

    3.2 Commands 3.2.4 Programming the monitor diode current (IMD) Programming: ":IMD:SET <NR3>" Program the monitor diode set current ":IMD:START <NR3>" Program the monitor diode start current for “ELCH” ":IMD:STOP <NR3>" Program the monitor diode stop current for “ELCH” ":IMD:MEAS <NR1>" Program monitor diode...
  • Page 54 3.2 Commands ":IMD:START?" Read the monitor diode start current for “ELCH” [:IMD:START <NR3><LF>] ":IMD:STOP?" Read the monitor diode stop current for “ELCH” [:IMD:STOP <NR3><LF>] ":IMD:MEAS?" Read the position of the monitor diode current as measurement value in the “ELCH” output string (1..8, 0 if not selected) [:IMD:MEAS <NR1><LF>] Current module LDC8xxx / page 47...

  • Page 55: Switching The Output On And Off (Outp)

    3.2 Commands 3.2.5 Switching the output on and off (OUTP) Programming: ":LASER ON" Switch the laser output on ":LASER OFF" Switch the laser output off Reading: ":LASER?" Read status of the laser output [:LASER ON<LF>] [:LASER OFF<LF>] 3.2.6 Selecting the laser diode polarity (LDPOL) Programming: ":LDPOL AG"...

  • Page 56: Programming The Laser Diode Software-Limit (Limc)

    3.2 Commands 3.2.7 Programming the laser diode software-limit (LIMC) Programming: ":LIMC:SET <NR3>" Program the laser diode current limit Reading: ":LIMC:SET?" Read the laser diode current limit [:LIMC:SET <NR3><LF>] ":LIMC:MIN?" Read the minimum possible laser diode current limit [:LIMC:MIN <NR3><LF>] ":LIMC:MAX?" Read the maximum possible laser diode current limit [:LIMC:MAX <NR3><LF>]...

  • Page 57: Programming The Monitor Diode Current Limit (Limm)

    3.2 Commands 3.2.9 Programming the monitor diode current limit (LIMM) Programming: ":LIMM:SET <NR3>" Program the monitor diode current limit Reading: ":LIMM:SET?" Read the monitor diode current -limit [:LIMM:SET <NR3><LF>] ":LIMM:MIN?" Read the minimum monitor diode current -limit allowed [:LIMM:MIN <NR3><LF>] ":LIMM:MAX?"...

  • Page 58: Programming The Optical Power Limit (Limp)

    3.2 Commands 3.2.10 Programming the optical power limit (LIMP) Programming: ":LIMP:SET <NR3>" Program the optical power limit Reading: ":LIMP:SET?" Read the optical power limit [:LIMP:SET <NR3><LF>] ":LIMP:MIN?" Read the minimum optical power limit allowed [:LIMP:MIN <NR3><LF>] ":LIMP:MAX?" Read the maximum optical power limit allowed [:LIMP:MAX <NR3><LF>] ":LIMP:MIN_W?"...

  • Page 59: Switching The Bias Voltage On And Off (Pdbia)

    3.2 Commands 3.2.12 Switching the bias voltage on and off (PDBIA) Programming: ":PDBIA ON" Switch bias voltage on ":PDBIA OFF" Switch bias voltage off Reading: ":PDBIA?" Read the bias voltage switch [:PDBIA ON<LF>] [:PDBIA OFF<LF>] 3.2.13 Selecting the photo diode polarity (PDPOL) Programming: ":PDPOL AG"...

  • Page 60: Programming The Optical Power (Popt)

    3.2 Commands 3.2.14 Programming the optical power (POPT) Programming: ":POPT:SET <NR3>" Program the optical power Reading: ":POPT:SET?" Read the set optical power [:POPT:SET <NR3><LF>] ":POPT:ACT?" Read the actual optical power [:POPT:ACT <NR3><LF>] ":POPT:MIN?" Read the minimum set optical power allowed [:POPT:MIN <NR3><LF>] ":POPT:MAX?"...

  • Page 61: Selecting A Tec Module For Temperature Protection (Tpslot)

    3.2 Commands 3.2.16 Selecting a TEC module for temperature protection (TPSLOT) Programming: ":TPSLOT 3" Selects the TEC in slot 3 for temperature protection ":TPSLOT 5" Selects the TEC in slot 5 for temperature protection Reading: ":TPSLOT?" Read assigned slot for the temperature protection [:TPSLOT <NR1><LF>] 3.2.17 Querying the module type ":TYPE:ID?"...

  • Page 62: Reading The Laser Diode Voltage (Vld)

    3.2 Commands 3.2.18 Reading the laser diode voltage (VLD) Programming: ":VLD:MEAS <NR1>" Program Vld to be a measurement value for “ELCH” on position <NR1> (1..8) in the output string. Reading: ":VLD:ACT?" Read the actual laser voltage [:VLD:ACT <NR3><LF>] ":VLD:MIN_R?" Read Uld – ADC = 0000 [:VLD:MIN_R <NR3><LF>] ":VLD:MAX_R?"...

  • Page 63: 1000

    Maintain proper air flow. [1004,"Internal power failure"] Possible reason: Severe hardware error. Contact Thorlabs GmbH. [1005,"No LD polarity change during laser on"] Possible reason: The polarity of the laser diode cannot be changed with the laser diode output switched on.
  • Page 64 3.3 1000 ... 1099 error messages of an LDC8xxx [1010,"Attempt to switch on laser while temperature is out of window"] Possible reason: The actual temperature of the TED8xxx that is assigned to the LDC8xxx is smaller than Tset - Twin or bigger than Tset + Twin. (Refer to chapter 3.2.16 and 3.2.15 on page 54 ) [1011,"Attempt to activate Twin although there is no TEC in the system"] Possible reason:...

  • Page 65: Status Reporting

    3.4 Status reporting 3.4 Status reporting The LDC8xxxx modules provide three 16 bit registers DEC, DEE and EDE (see Figure 10) and four 8 bit registers ESR, STB, ESE and SRE (see Figure 11) to program various service request functions and status reporting. (Please refer to the IEEE488.2-1992 standard chapter 11) Power limit Open Circuit (LD)
  • Page 66 3.4 Status reporting Output buffer ERROR Queue or serial poll Service Request Generation Figure 11 The PRO8000 (-4)/ PRO800 register ESR, ESE, STB and SRE Current module LDC8xxx / page 59 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 67: Standard Event Status Register (Esr)

    3.4 Status reporting 3.4.1 Standard event status register (ESR) The bits of this register represent the following standard events: Power on This event bit indicates that an off to on transition has occurred in the power supply. So it is high after turning on the device for the first time.

  • Page 68: Status Byte Register (Stb)

    3.4 Status reporting 3.4.3 Status byte register (STB) The bits of this register are showing the status of the PRO8000 (-4) / PRO800. RQS: Request service message: Shows that this device has asserted SRQ (read via serial poll). Master summary status: Shows that this device requests a "*STB?"...

  • Page 69: Reading The Stb By Detecting Srq

    3.4 Status reporting 3.4.5 Reading the STB by detecting SRQ If an SRQ is asserted (see 3.4.4) bit 6 of the STB is set to logical 1, so that the controller can detect which device asserted the SRQ by auto serial polling. “*STB?”...

  • Page 70: Device Error Condition Register (Dec)

    3.4 Status reporting 3.4.8 Device error condition register (DEC) The bits of this register show the errors that occur during operation (operation errors). The bits are active high. If the error disappears, the bits are reset to low. For LDC8xxx laser diode controller modules bits 0 ... 4, 8 and 11 are used: (0) Over temperature Laser temperature too high.

  • Page 71: Device Error Event Enable Register (Ede)

    3.4 Status reporting 3.4.10 Device error event enable register (EDE) The bits of the EDE are used to select which bits of the DEE shall influence bit 3 (DES) of the STB. The 8 bits of the EDE are related by logical "AND" to the according 8 bits of the DEE.

  • Page 72: Service And Maintenance

    4.1 General remarks 4 Service and Maintenance 4.1 General remarks You should regularly control the correct function of the interlock. With the laser in operation, interrupt the interlock connection: the laser output must go into “OFF” state immediately. Otherwise the LDC8xxx modules do not need any further maintenance by the user.

  • Page 73: Troubleshooting

    4.2 Troubleshooting 4.2 Troubleshooting In case that one module of your PRO8000/800 system shows malfunction please check the following items: % Module does not work at all (no display on the mainframe): & Mainframe PRO8000 (-4) / PRO800 connected properly to the mains? ' Connect the PRO8000 (-4) / PRO800 to the power line paying attension to the right voltage setting of your mainframe.
  • Page 74 4.2 Troubleshooting & Do you have selected the desired module? ' (The LED “SEL” on the front panel of the module must be on) Select the desired module on the display by means of the up- and down arrow keys. &...
  • Page 75 Thorlabs-Hotline (blueline@thorlabs.com) before sending the whole PRO8000 (-4) / 800 system for checkup and repair to Thorlabs-Germany. (refer to section 5.4, “Address ” on page 72 Current module LDC8xxx / page 68 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 76: Listings

    5.1 List of acronyms and abbreviations 5 Listings 5.1 List of acronyms and abbreviations The following abbreviations are used in this manual: Alternating Current Analog to Digital Converter Anode Ground Cathode Ground CLeaR Carriage Return Character Response Data Digital to Analog Converter Direct Current Device Clear Device Error Condition Register...

  • Page 77: List Of Figures

    5.2 List of figures Numeric Response data of type 2 Numeric Response data of type 3 Message AVailable) Master Summary Status Over TemPerature Personal Computer Photo Diode ReQuest Service Message Selected Device Clear SELect Service Request Enable Register Service ReQuest STatus Byte Register Soft Ware ThermoElectric Cooler (Peltier Element)
  • Page 78 LD OUT ports and with a custom-made shielded cable installed at the LDC8080 module’s LD OUT port. Compliance demonstrated with the LDC8x series modules installed in Thorlabs PRO8x series mainframes. Emissions, which exceed the levels required by these standards, may occur when this equipment is connected to a test object.
  • Page 79 5.4 Address 5.4 Address Thorlabs GmbH Gauss-Strasse 11 D-85757 Karlsfeld Fed. Rep. of Germany Tel.: ++49 (0)81 31 / 5956-0 Fax: ++49 (0)81 31 / 5956 99 Email: profile@thorlabs.com Internet: http://www.thorlabs.com Technical Hotline: blueline@thorlabs.com Our company is also represented by several distributors and sales offices throughout the world.
  • Page 80 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

This manual is also suitable for:

Ldc8 seriesPro8000Pro8000-4Pro800

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