Arroyo Instruments ComboSource 6300 Series Скачать руководство пользователя страница 31

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6300 Series

ComboSource

User’s Manual · Page 31

The

6340-QCL

ComboSource

also has the following minimum voltage

requirements for the laser output:

Using the Laser Driver

Laser Control Modes

The

ComboSource

offers the following control modes:

Io (ACC)

Io HiBW

(ACC)

Im (AMC)

Po (APC)

, and

Vf (AVC)

Changing the control mode is done through the menu by changing the Mode
parameter in the Laser menu to one of these values.

and

Io HiBW

modes (referred to collectively as ACC, or automatic current

control modes) are used to drive a specific current through the laser diode.

When in this mode, the set point will be in milliamps, and the

ComboSource

will

drive the desired current through the laser diode as long as the voltage at the
chosen set point does not exceed the voltage limit. In

mode, you will be

limited to less than a 10 Hz bandwidth. To modulate above that rate, use the

HiBW

, which is a high bandwidth current mode supporting modulation.

mode (also referred to as AMC, or automatic monitor photodiode control

mode) is used to control the laser diode using the monitor diode feedback. You
select the target monitor diode current, and the

ComboSource

will drive exactly

Содержание ComboSource 6300 Series

Страница 1: ......

Страница 2: ...Laser Driver 31 Laser Control Modes 31 Using the Laser Limits 32 Analog Modulation 33 Compensating for Voltage Loss 34 Using the Temperature Controller 37 TEC Control Modes 37 Using the TEC Limits 37...

Страница 3: ...omboSource also operates in constant voltage control mode allowing you to use it in precision voltage applications such as EML devices or for doing V I measurement graphs The user interface of the Com...

Страница 4: ...ldering into custom solutions is available as p n 1221B 1260B TECSource Cable 5A 2m This cable has DB 15 male female connectors for interfacing to the LaserMount or other connectorized fixtures and su...

Страница 5: ...ut important information If at any time any of the following conditions exist or are suspected of existing discontinue use of the unit until it can be inspected by qualified service personnel Visible...

Страница 6: ...manual for instructions on how to obtain service for this instrument WARNING To avoid electrical shock ensure a 3 prong power cord is used and is plugged into a earth grounded receptacle Failure to do...

Страница 7: ...knob again to save the value Scroll down and make the same adjustments to the voltage limit Vf Lim Next you should adjust the temperature control settings appropriate for your device Scroll back to t...

Страница 8: ...to be reduced If the temperature is slowly moving up and down try a higher Gain You may need to experiment with several gain settings to find the ideal value and for even finer control you can set the...

Страница 9: ...ng a three to two prong adapter and connecting the ground tab to earth ground Turn the power switch located on the front panel into the on position The unit will display the model serial number and fi...

Страница 10: ...oom ambient does not exceed the unit s operating temperature When using 1401 RM 2 to rack mount two units either unit may also be a 4300 Series LaserSource or 5300 Series TECSource Warm up and Environ...

Страница 11: ...uts are controlled via the two On Off buttons For the laser when turning the output on there is a programmable delay factory default of 3 seconds where the unit will indicate that the output is on the...

Страница 12: ...found in the Error Messages section below When the unit is in remote mode the yellow Remote LED will be lit More information about how the instrument behaves in remote mode can be found in the Remote...

Страница 13: ...f the ComboSource is its ability to display both the set point and measurements simultaneously when in small display mode The table below shows which values will appear on the display depending on the...

Страница 14: ...more information on the various modes Status Messages The instrument will display status messages in upper right corner indicating several different conditions for the laser that may be of interest t...

Страница 15: ...he Control Modes section above the unit offers seven control modes Io ACC Io HiBW ACC Im AMC Po APC and Vf AVC Change this setting to select a new mode Io ACC Range Selects the high or low current ran...

Страница 16: ...ble and connector resistances Cable R is ignored in Vf AVC Mode For more information about this feature see Using the Cable R Setting below Not available when using remote voltage sense 0 0000 Int Con...

Страница 17: ...d User Cal Edit Cal Must be set to Yes before user calibration settings can be changed No Reset Cal Reset the Laser user calibration data to factory defaults all slopes to 1 all offsets to 0 Requires...

Страница 18: ...in T Mode and the actual temperature drops below this value the output will be turned off Temperature limits not monitored in R Mode or Ite Mode Limit monitoring can also be disabled in software see T...

Страница 19: ...information Off Ext Fan Pwr When Ext Fan is set to Custom this sets the specific fan voltage from 4 0 to 12 0 volts See the External Fan Control section below for more information 12 0 Ext Fan Mode C...

Страница 20: ...Menu Advanced Invert ITE Reverses the direction of the current No Off if Thi Lim Turns off the TEC output if the TEC exceeds the temperature high limit Yes Off if Tlo Lim Turns off the TEC output if t...

Страница 21: ...t While Rmt To disable changing the set point while in Remote Mode set this value to No To enable changing the set point while in Remote mode set this Value to Yes No Err While Rmt To turn off the dis...

Страница 22: ...figurations Using the Main Menu System Menu Config menu item or the SAV and RCL commands over the computer interfaces ComboSource allows you to save up to four configurations Each configuration will s...

Страница 23: ...ent Any command except DELAY or WAI commands can be used to construct a script allowing you to configure the instrument change modes change set points turn outputs on or off or any other of a wide ran...

Страница 24: ...A C button and likewise the primary B and secondary D actions both use the same B D button To initiate the action assigned to the A or B keys press and hold the A or B key until the instrument does a...

Страница 25: ...drive circuit and photodiode measurement circuit A cable is required for both the TEC and Laser outputs Arroyo Instruments carries cables specifically designed for these applications both with a DB c...

Страница 26: ...ale DB 9 and has the following pin out DB 9 Pin Description 1 Interlock 2 Interlock 3 Earth Ground 4 Laser Cathode Voltage Sense 5 Laser Cathode 6 Photodiode PD Cathode 7 Photodiode PD Anode 8 Laser A...

Страница 27: ...rom any modulation source The center pin is positive and the outer shell is ground TEC Output Connector The TEC Output connection is a female DB 15 and has the following pin out DB 15 Pin Description...

Страница 28: ...and cathode connections are also isolated from earth ground However if you use the earth ground pin of the Output connector it is possible to create a ground loop if the instrument s earth ground is c...

Страница 29: ...the ComboSource In the event you have multiple Arroyo Instruments products plugged in simultaneously you will need to experiment to see which instrument was assigned to which port For example you coul...

Страница 30: ...dd a series resistor to the laser or TEC as appropriate to remove some of the power from inside the unit Typically a 30W 1 load resistor in series with the output is sufficient but higher resistances...

Страница 31: ...control modes are used to drive a specific current through the laser diode When in this mode the set point will be in milliamps and the ComboSource will drive the desired current through the laser dio...

Страница 32: ...ion BNC on the front panel of the instrument Modulation rates vary by model so see your model s specification for the maximum modulation rates Only Io HiBW mode supports high speed modulation All othe...

Страница 33: ...function is 50mA V In addition the set point adds to the modulation input so using the same 6305 example if you were to apply 5V and the set point was 100mA then the resulting drive current would be 3...

Страница 34: ...no special wiring to implement Four wire sense on the other hand does require additional wiring but is the most accurate method Details on both are found below Using Remote Voltage Sense The ComboSou...

Страница 35: ...tting The Cable R setting allows you to calculate the voltage at the laser by subtracting the voltage loss through the cable and connectors This is done by measuring or calculating the cable resistanc...

Страница 36: ...age is also the resistance of the cable To short the cable disconnect the laser and short the anode and cathode together as close to the end of the cable as possible Ideally the short should be done b...

Страница 37: ...nted in software but due to the relatively slow nature of the TEC software is typically adequate Both high and low temperature limits are available and will turn the TEC output off unless this has bee...

Страница 38: ...ture increases hence the negative coefficient Here is a typical response curve of a thermistor Typical Resistance vs Temperature Graph As can be seen be the graph the resistance of the thermistor drop...

Страница 39: ...lly be obtained from the thermistor manufacturer The ComboSource defaults to the coefficients for the BetaTHERM 10K3A1 thermistor A 1 12924x10 3 B 2 34108x10 4 C 0 87755x10 7 You can change the coeffi...

Страница 40: ...easurement mode which is subject to this error and a four wire measurement mode that uses separate sensor and source lines to remotely sense the actual resistance of the RTD and eliminate the cable or...

Страница 41: ...temperature in C calculated using the standard conversion value of 1 C A or 0 1 C mV as appropriate and adjusted from Kelvin to Celsius External Fan Control The ComboSource has a built in user adjust...

Страница 42: ...nal heating If your application requires you can also configure the ComboSource to operate in a cool only mode This is only possible with Peltier coolers as resistive heaters will heat regardless of t...

Страница 43: ...the ComboSource will step through a process to determine the thermal response of the mount which can then be used in a mathematical model to calculate the PID parameters The PID parameters generated...

Страница 44: ...tep it is performing and the word AutoTune will flash on the display The typical temperature profile of an AutoTune process is shown in the graph below The first step which is the calculation of the P...

Страница 45: ...nchanged an E 436 will also be displayed Using the AutoTune Function Remotely The AutoTune function can be done remotely and works essentially the same as local operation The TEC AUTOTUNE command star...

Страница 46: ...to short the terminals is not itself adding resistance to the circuit Use short heavy gauge wires preferably soldered onto the terminals to minimize any resistance the short might add Place the short...

Страница 47: ...gh the User Cal menus or via the LASER USERCAL or TEC USERCAL commands over the computer interface For calibration of the instrument from the front panel the User Cal menu is located under the Advance...

Страница 48: ...nt slope V Rem B Vf remote sense measurement offset V TEC User Calibration Entries Menu Entry Description ITE Set M ITE set point slope ITE Set B ITE set point offset A ITE M ITE measurement slope ITE...

Страница 49: ...fset value for the high range Io set point which is the I Set HiB menu entry Considering that you need to raise the set point by 1 4mA then the I Set HiB menu entry should be adjusted to 1 4mA the I S...

Страница 50: ...get a compensation that increases the set point by slightly over 1 4mA to bring it up to 300mA Let s check 300mA test point 1 0147 300 2 9934 301 4166mA check Likewise the 100mA set point should be l...

Страница 51: ...ense resistor so both much be considered when determining the overall accuracy of your measurement system Considerations for Calibrating the TEC Sensors For calibration of resistance sensors thermisto...

Страница 52: ...URRENT Range A 2 5 000 Resolution A 0 1 Accuracy set A 0 05 1 Stability ppm time 200 24 hours Temperature Coeff ppm C 200 PD Bias V 0 to 5V programmable LASER VOLTAGE Range V 0 10 0 10 0 10 0 4 Resolu...

Страница 53: ...0 1 Accuracy set A 0 05 1 Stability ppm time 200 24 hours Temperature Coeff ppm C 200 PD Bias V 0 to 5V programmable LASER VOLTAGE Range V 0 18 0 15 Resolution V 0 001 Accuracy set V 0 05 0 005 Stabi...

Страница 54: ...THERMISTOR Range k 0 2 450 Resolution k 0 01 Accuracy read k 0 05 50 100 A THERMISTOR Range k 0 02 45 Resolution k 0 001 Accuracy read k 0 05 5 LM335 Bias mA 1 Range mV 1730 4730 Resolution mV 0 1 Ac...

Страница 55: ...ly E 201 Data out of range The message attempted to set a value that was outside the allowable range USB Serial only E 202 Invalid data type When trying to parse the message the data was in an invalid...

Страница 56: ...determined manually E 501 Interlock shutdown output The interlock input pins 1 and 2 of the output connector were not shorted when the output was on E 504 Laser current limit disabled output The laser...

Страница 57: ...535 Calibration cancelled The active calibration process was cancelled E 536 Intermittent contact fault The instrument detected an intermittent contact and shut down the laser output If this is trigge...

Страница 58: ...upport Service Service and repair for the ComboSource can be obtained by contacting the distributor from where you purchased the instrument or directly from Arroyo Instruments A complete list of distr...

Страница 59: ...e Test Standards EN 61010 Electrical Equipment for Measurement Control and Laboratory Use Safety Requirements This Certificate is the Manufacturer s Declaration which states that the 6300 Series Combo...

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