Arroyo Instruments ComboPak 685 Series User Manual
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Arroyo Instruments ComboPak 685 Series User Manual

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Summary of Contents for Arroyo Instruments ComboPak 685 Series

  • Page 2: Table Of Contents

    Page 2 · 685 Series ComboPak User’s Manual Table of Contents Introduction ....................3 Safety Terms and Symbols ............... 4 Quick Start ....................6 Installation ....................7 Settings ..................... 9 Connecting Your Device to the ComboPak ..........15 Power and Cable Connections ............... 16 Grounding and Wiring Considerations ...........

  • Page 3: Introduction

    For non-USA customers, a power cord is not included, and an IEC-60320-C13 rated AC power cord must be provided. Accessories Arroyo Instruments also sells several accessories designed to work with the ComboPak. These include:...

  • Page 4: Safety Terms And Symbols

    Storage of the unit outside the standard storage temperature or humidity rating, or prolonged storage under harsh conditions; • Failure to operate properly. If needed, contact your distributor or Arroyo Instruments for service or repair to ensure the safety of the product is maintained.
  • Page 5 CAUTION There are no user-serviceable parts inside. All service and repair work shall be done by Arroyo Instruments or personnel authorized by Arroyo Instruments. Modifications done by non-authorized personnel will void the warranty. Please see the Service section later in this manual for instructions on how to obtain service for this instrument.

  • Page 6: Quick Start

    Gain – start with 5 or 10, may need to be adjusted (see below) Sensor coefficients – ensure they match your device. If using an Arroyo Instruments mount with a thermistor sensor, the unit is already preprogrammed for that sensor.

  • Page 7: Installation

    685 Series ComboPak User’s Manual · Page 7 point of zero and ramp up to the desired set point in steps. In this way, if the laser is wired incorrectly, the safety circuits will trip earlier and minimize any chance of damaging the laser. Once you have confirmed proper operation, the set point can be left at the desired operating point, and the output turned on and off.
  • Page 8 Page 8 · 685 Series ComboPak User’s Manual Ventilation ComboPak has vent holes on the front, back, and sides of the unit. While unlikely, you must not block these vent holes or overheating may occur, causing damage to the unit. The only exception is you may block the vent holes on one side of the unit (such as when using the 1402B-RM), but not both.

  • Page 9: Settings

    685 Series ComboPak User’s Manual · Page 9 Settings All parameters of the ComboPak can be accessed and changed over the computer interface. Most parameters can be changed using a standard command, as defined in the Computer Interfacing Manual or through the Settings dialog within Arroyo Control.
  • Page 10 Page 10 · 685 Series ComboPak User’s Manual Menu Description Factory Computer Default Command Vf limit This setting controls the maximum Maximum LAS:LIM:LDV amount of forward voltage that can be delivered to the laser diode. This limit is implemented in hardware for immediate response.
  • Page 11 685 Series ComboPak User’s Manual · Page 11 Menu Description Factory Computer Default Command Basic TEC Settings Mode This set the operating mode (T T Mode TEC:MODE Mode, R Mode, or Ite Mode) of the temperature controller. Mount Specify the mount connected to the User TEC:MOUNT ComboPak.
  • Page 12 Page 12 · 685 Series ComboPak User’s Manual Menu Description Factory Computer Default Command T-High Lim T-High Lim is the upper 125°C TEC:LIM:THI temperature limit. If operating in T Mode and the actual temperature rises above this value, the output will be turned off.
  • Page 13 685 Series ComboPak User’s Manual · Page 13 Menu Description Factory Computer Default Command Ext Fan This selects the voltage for the TEC:FAN auxiliary fan power supply. See the External Fan Control section below for more information. Ext Fan Pwr When Ext Fan is set to Custom, this 12.0 TEC:FAN...
  • Page 14 Page 14 · 685 Series ComboPak User’s Manual Menu Description Factory Computer Default Command Terminal Terminal mode simply echoes any TERMINAL Mode characters received over the serial or USB interfaces. Msg Term This controls the output message CR/LF TERM termination, and can be set to CR/LF, CR, LF, or None.

  • Page 15: Connecting Your Device To The Combopak

    Poor or intermittent connections can damage or destroy the laser diode. A cable is required for both the TEC and Laser outputs. Arroyo Instruments carries cables specifically designed for these applications, both with a DB connector on the device end or with a bare wire pigtail for terminating the...

  • Page 16: Power And Cable Connections

    Shell Earth Ground Laser Output Connector (DB-9 Female) Arroyo Instruments has followed industry conventions for laser DB-9 connections, and is compatible with pin-outs from other vendors, such as ILX and Newport. However, care should still be taken when interfacing the ComboPak to other vendors’...
  • Page 17 685 Series ComboPak User’s Manual · Page 17 TEC Output Connector The TEC Output connection is a female DB-15, and has the following pin-out: DB-15 Pin Description 1, 2, & 9 TE (+) 3, 4, & 10 TE (–) 5 & 6 Earth Ground Sensor+ Sensor –...
  • Page 18 Page 18 · 685 Series ComboPak User’s Manual Control I/O Connector The Control I/O connection is a male DB-15, and has the following pin-out: DB-15 Pin Description Laser On/Off Control Input Laser On/Off Status Output Laser Stable Output Modulation (+) Modulation (–) +5V Auxiliary Supply Ground...

  • Page 19: Grounding And Wiring Considerations

    685 Series ComboPak User’s Manual · Page 19 Grounding and Wiring Considerations ComboPak electrically isolates the control circuitry from Earth Ground, allowing the laser anode or laser cathode to be connected to earth ground and still allow proper operation. However, care needs to be taken when connecting the ComboPak to your module, especially when using the Control I/O Interface, to prevent damage to...

  • Page 20: Installing The Usb Drivers

    Page 20 · 685 Series ComboPak User’s Manual However, the broader rule is that you can never connect any pins on the Control I/O interface to any pins on the Laser or TEC pins. The last three requirements are typically not a problem, as these signals are almost always isolated signals from the laser or mount.

  • Page 21: Thermal Considerations

    685 Series ComboPak User’s Manual · Page 21 (except scripts and the function key definitions), and allow you to quickly recall them. This is particularly useful when the instrument is used in multiple setups, and the particular configuration of each setup can be stored and later recalled for a quick reconfiguration.
  • Page 22 Page 22 · 685 Series ComboPak User’s Manual TEC Safe Operating Range for 685 ComboPak Operating Zone Any combination of current and voltage that lie in this zone is acceptable. Non-Operating Zone TEC Current (Amps)

  • Page 23: Using The Laser Driver

    685 Series ComboPak User’s Manual · Page 23 Using the Laser Driver Laser Control Modes ComboPak offers five laser control modes: Io (ACC), Io HiBW (ACC), Im (AMC), Po (APC), and Vf (AVC). Changing the control mode can only be done through the computer interface, either through Arroyo Control, or by sending the appropriate LASER:MODE command.

  • Page 24: Using The Laser Limits

    Page 24 · 685 Series ComboPak User’s Manual Using the Laser Limits Both the laser current and voltage limits are implemented in hardware, providing for fast response to changes in laser diode operation. When a voltage limit is detected, the output is immediately shutdown. Because of the sensitivity of the voltage limit, operating near the limit (within one to two hundred millivolts) is not recommended.

  • Page 25: Compensating For Voltage Loss

    If in doubt, use a current probe attached to an oscilloscope to monitor actual performance. The 1220B or 1221B cables recommended by Arroyo Instruments are shielded twisted pair, and will provide good modulation performance. Current (A)
  • Page 26 Page 26 · 685 Series ComboPak User’s Manual The hardware safety circuits use the remote voltage, providing for a greater degree of protection (Vf Limit works on the remote voltage at the laser rather than the local voltage at the connector) Works in voltage control mode The diagram below shows conceptually how to wire the laser to the ComboPak, using a 4-wire connection:...
  • Page 27 685 Series ComboPak User’s Manual · Page 27 While it is possible to use a DMM to measure the resistance of the cable, because resistance is so small, you will not typically get proper readings (most DMMs are not designed to properly measure small resistances). A better approach is to use the instrument to drive current through the system and then measure the voltage loss to determine resistance.
  • Page 28 Page 28 · 685 Series ComboPak User’s Manual connector, and returns this value laser the measured laser voltage (LASER:LDV?). However, there are some limitations to how the cable loss calculation is used: The value for Vf Limit is always the voltage at the connector (except when using remote voltage sense, see above).

  • Page 29: Using The Temperature Controller

    Limits can be enabled or disabled using the TEC:ENABLE:OUTOFF command. Temperature and sensor limits are enabled by default. Selecting the Fixture ComboPak has integrated support for many of the mounts offered by Arroyo Instruments, such as the 205 TEC Butterfly LaserMount. To simplify...

  • Page 30: Working With Thermistors

    Page 30 · 685 Series ComboPak User’s Manual operation when using these mounts, you can change the Mount selection using the TEC:MOUNT command. By selecting a mount, the current limit, temperature limits, default gain, and sensor settings are automatically adjusted to values appropriate to the mount.

  • Page 31: External Fan Control

    685 Series ComboPak User’s Manual · Page 31 the resistance sensitivity of the thermistor at your application temperature, which varies greatly by temperature and thermistor types. ComboPak measures sensor resistance using a 100μA constant current source, with an upper measurement range of 45kΩ. This will limit low temperature range operation depending on the thermistor type.

  • Page 32: Resistive Heaters And Heat/Cool Only Modes

    Page 32 · 685 Series ComboPak User’s Manual Cool Fan is turned on whenever the TEC output is on and cooling, off otherwise. Heat Fan is turned on whenever the TEC output is on and heating, off otherwise. For more details, see the TEC:FAN command in the Computer Interfacing Manual.

  • Page 33: Using The Autotune Function

    685 Series ComboPak User’s Manual · Page 33 The controller can calculate PID values using the AutoTune function, discussed in detail in the next section. To manually adjust the PID, start by changing the I and D values to zero, and adjust the P value so that it reaches the set point as quickly as possible without overshooting the set point an unacceptable amount.
  • Page 34 Page 34 · 685 Series ComboPak User’s Manual Once the AutoTune process is complete, the output will remain on. The three PID parameters can be retrieved with the TEC:PID? query. More details on the use of the command can be found in the Computer Interfacing Manual.

  • Page 35: Compensating For Tec Cable Resistance

    685 Series ComboPak User’s Manual · Page 35 If AutoTune fails due to system limitations, you will need to manually modify the PID parameters as described in the section above or select a factory gain setting. You can turn the output off at any time to cancel the AutoTune process, and the PID parameters will remain unchanged (an E-436 will also be generated).
  • Page 36 Page 36 · 685 Series ComboPak User’s Manual ComboPak is typically calibrated annually. Calibration can be done one of two ways: the instrument can be returned to the factory for a full recalibration, or the user calibration commands can be used for simple slope/offset calibration. CAUTION Because user calibration directly affects the performance of the instrument, it must be performed by...
  • Page 37 685 Series ComboPak User’s Manual · Page 37 value becomes “compensated” based on these values. The compensation formula (a linear equation) is very simple: Compensated = Slope * Uncompensated + Offset Depending on how you wish to calibrate, a simple offset calibration may be sufficient, where only the offset value is adjusted and the slope is left at 1.
  • Page 38 Page 38 · 685 Series ComboPak User’s Manual Consider the following two data points, where ‘actual’ is what you are measuring with your meter, and ‘measured’ is the measured current as reported by the ComboPak: Set point Actual Measured 101.5 100.6 298.6 301.2...
  • Page 39 685 Series ComboPak User’s Manual · Page 39 for your application, where the upper point should be the maximum current you plan to operate, and the lower data point near the minimum current you plan to operate (but above zero). Alternatively, you can take two generalized data points of 80% of the range of the instrument as the upper point and 20% of the range as the lower point…...

  • Page 40: Specifications

    Page 40 · 685 Series ComboPak User’s Manual Specifications Description Laser Specifications 685-0.1 685-0.5 685-01 685-02 LASER SETPOINT LASER CURRENT Range (mA) 1000 2000 Max Resolution (mA) 0.005 0.02 0.05 Accuracy (±[% set+mA]) 0.025% + 0.03 0.025% + 0.12 0.025% + 0.3 0.025% + 0.5 Stability (ppm, time) <...
  • Page 41 685 Series ComboPak User’s Manual · Page 41 Description TEC & General Specifications SETPOINT TEMPERATURE Range (ºC) -99 to 250 Resolution (ºC) 0.01 Accuracy (± ºC) 0.05 Stability (1hr) (± ºC) 0.004 Stability (24hr) (± ºC) 0.01 CURRENT Range (A) Compliance Voltage (V) >...

  • Page 42: Mechanical Drawings

    Page 42 · 685 Series ComboPak User’s Manual Mechanical Drawings...

  • Page 43: Error Messages

    685 Series ComboPak User’s Manual · Page 43 Error Messages Error Description Cause Code E-100 General Error The error code is non-specific, and is generally used when no other error code is suitable. E-102 Message too long The message is too long to process (USB/Serial only).
  • Page 44 Page 44 · 685 Series ComboPak User’s Manual Error Description Cause Code E-403 Module open, A Peltier module open circuit was detected output turned off and the output was turned off. E-404 I limit, output turned A current limit was detected and the output was turned off.
  • Page 45 685 Series ComboPak User’s Manual · Page 45 Error Description Cause Code E-450 Analog set The analog set point input was disconnected, disconnected, output turned off. output off E-501 Interlock shutdown The interlock input (pins 1 and 2 of the output output connector) were not shorted when the output was on.
  • Page 46 Page 46 · 685 Series ComboPak User’s Manual Error Description Cause Code E-521 TEC temperature The laser output was turned off because limit disabled output the TEC temperature limit was exceeded corresponding bit in the OUTOFF register was set. E-534 Po mode selected Attempted to select Po mode and PD with PD Response...
  • Page 47 685 Series ComboPak User’s Manual · Page 47 Error Description Cause Code E-991 thru E-997 Hardware specific A hardware error was detected. Contact error occurred factory for support in diagnosing this problem. E-998 Command not A command was recognized but not supported supported by the ComboPak.

  • Page 48: Calibration, Maintenance And Service

    Arroyo Instruments. A complete list of distributors is available on the Arroyo Instruments web site. You can contact Arroyo Instruments through one of these methods:...
  • Page 49 Warranty Arroyo Instruments warrants that this product will be free from defects in material and workmanship and will comply with Arroyo Instruments’ published specifications at the time of sale for a period of one year from date of shipment.

  • Page 50: Ec Declaration Of Conformity

    Page 50 · 685 Series ComboPak User’s Manual EC Declaration of Conformity EC Declaration of Conformity I/We Arroyo Instruments 1201 Prospect Street San Luis Obispo, CA declare that 685 Series ComboPak In accordance with the following European Commission Directives: 2014/30/EU - Electromagnetic compatibility (EMC)

  • Page 51: Uk Declaration Of Conformity

    685 Series ComboPak User’s Manual · Page 51 UK Declaration of Conformity UK Declaration of Conformity I/We Arroyo Instruments 1201 Prospect Street San Luis Obispo, CA declare that 685 Series ComboPak In accordance with the following U.K. Legislation Regulations: Electrical Equipment (Safety) Regulations 2016...
  • Page 52 Page 52 · 685 Series ComboPak User’s Manual Copyright © 2022, Arroyo Instruments. All Rights Reserved P/N 530-1041D...

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