Quantum Composers LDDC 1550 Bedienungsanleitung

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LDDC 1550/LSC 1650

Operators Manual

Version 2.8

Quantum Composers, Inc.

212 Discovery Drive

Bozeman, MT 59718

Your distributor:

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Table of Contents

1 Introduction...............................................................................................................................1-4

2 Setup .........................................................................................................................................2-4

Power........................................................................................................................................2-4

Driver Connection....................................................................................................................2-5

LSC Connections......................................................................................................................2-5

Communication........................................................................................................................2-5

USB ......................................................................................................................................2-5

3 User Controls............................................................................................................................3-7

4 Display/Indicators.....................................................................................................................4-8

5 Menu Information.....................................................................................................................5-8

Verification Page......................................................................................................................5-8

Main Page.................................................................................................................................5-8

Pulse Mode Page......................................................................................................................5-9

Q-Switch, External Trigger and Sync Page (LSC 1650 Only) ..............................................5-10

Interlock Status Information Page..........................................................................................5-11

System Setup Page #1............................................................................................................5-11

System Setup Page #2............................................................................................................5-12

System Setup Page #3............................................................................................................5-13

Save/Recall Settings Page......................................................................................................5-14

Information Page....................................................................................................................5-14

6 Driver I/O Connection ............................................................................................................6-15

7 LSC 1650 Connections...........................................................................................................7-16

8 Command Set..........................................................................................................................8-17

Device Command Format ......................................................................................................8-17

Device Addresses...................................................................................................................8-18

Command Types ....................................................................................................................8-18

Control Commands.............................................................................................................8-18

Query Commands...............................................................................................................8-18

LDDC/LSC Command Summary ..........................................................................................8-19

NOTES ...............................................................................................................................8-20

LSC 1650 Specific Command Summary...............................................................................8-21

System State Return ...............................................................................................................8-23

9 Basic Setup and Operation......................................................................................................9-23

Remote Operation Using Commands.....................................................................................9-23

Remote Operation Using Software GUI ................................................................................9-25

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10 Analog Measurement..........................................................................................................10-26

11 Laser System Controller Model 1650 Features ..................................................................11-26

Q-Switch Trigger..................................................................................................................11-26

Sync Output..........................................................................................................................11-26

External Trigger ...................................................................................................................11-26

Thermistor Inputs.................................................................................................................11-27

Photodiode Input..................................................................................................................11-27

Spare Analog Input...............................................................................................................11-27

Spare Analog Output............................................................................................................11-27

Spare Inputs..........................................................................................................................11-27

12 Standard Specifications.......................................................................................................12-28

13 LSC 1650 Specifications.....................................................................................................13-30

Safety Symbols ........................................................................................................................13-33

Appendix B - Lumina Power Driver Connections........................................................................ 35

Appendix C 1550-LDDC-OEM Option........................................................................................ 37

RS 232 Settings ..................................................................................................................... 37

RS 232 Connection................................................................................................................ 37

Appendix D CE Declaration of Conformity................................................................................. 39

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1 Introduction

The Quantum Composers Laser Diode Driver Controller (LDDC) and Laser System Controller

(LSC) provide a means of controlling various types of laser diode driver supplies. It allows the

ability to easily control current levels, pulse modes, and interlock controls as well as monitor

voltage and current levels from the driver. The LDDC/LSC provides an easy user interface for

manual control and readout as well as USB connectivity for remote computer control. The LSC

unit offers additional features such as q-switch triggering, external triggering, sync output, and

additional I/O signals.

2 Setup

The LDDC/LSC can easily be connected to a laser diode driver. In most cases a simple cable is

all that is required to interface with the driver and provide power to the unit. If the equipment is

used in a manner not specified by the manufacturer, the protection provided by the equipment

may be impaired.

Figure 1 (LDDC Connections)

Figure 2 (LSC Connections)

Power

The LDDC/LSC requires a 15-24VDC (200mA) power supply to operate. The included wall

adapter can be used to power the unit. The power adapter should be plugged into the rear panel

of the unit that is labeled 15VDC. If a different power source is used, the required mating

connector is a standard, circular female plug with the following dimensions: 5.5mm x 2.1 mm x

12mm (outer diameter x inner diameter x connector length). A power switch on the rear of the

unit will turn on the controller. The controller can also be powered directly from some driver

supplies that have an auxiliary DC output of at least 15V @ 200mA on pins 13 or 14 of the

interface connector. Please refer to the operator’s manual of the laser driver supply to verify if an

auxiliary supply pin is available. Power can be applied by both the wall adapter and the driver

supply since the supplies will be internally protected. If the 15VDC power is derived from the

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Driver I/O connector pins 13 and 14, it is required that the current be limited to less than 8A by

means of fusing it at 5A. If an external power supply is chosen to be used, it is recommended

that the mains outlet be easily accessible so that the plug of the external power supply can be

easily removed.

Driver Connection

The LDDC/LSC to driver connection in most cases will only require a straight through DB15

connection. Please verify that your particular driver has a compatible pin out. Refer to the

Interface Connection Table for detailed pin out descriptions. A custom cable can be made if

necessary to connect to drivers that do not use the same pin outs as the LDDC/LSC.

WARNING, incorrect connections can damage either the LDDC/LSC or the diode driver.

LSC Connections

The LSC unit has additional connections for q-switch triggering, external triggering, sync output

and additional I/O. The q-sw trigger has an adjustable delay referenced off the falling edge of the

pulse control signal. This allows for optimum adjustment of triggering a q-switch driver. The

external trigger input allows the LSC to be externally triggered via an external source. Rising and

falling edges can be selected as well as various modes. The additional I/O connector offers

additional signals: photodiode input, two thermistor inputs, a 0-10V analog output, a 0-5V

analog input and 3 TTL inputs that can be monitored.

Communication

The LDDC/LSC provides a standard USB connection for remote communications. An optional

Ethernet connection is also available.

USB

When the LDDC/LSC is connected to a remote computer via the USB connection, the computer

will recognize the unit as a “LDDC Controller”. Drivers will need to be installed for the remote

computer to interface to the LDDC/LSC. Drivers are included on the provided CD. Once the

drivers have been installed, the LDDC/LSC will show up in the device manager as a USB to

Serial Port Adapter. The LDDC/LSC can then be communicated with by using any terminal

program. The unit is baud rate independent, so any speed can be selected. Typically a rate of

115,200bps can be used.

Driver Installation (Windows XP)

1. Plug the LDDC/LSC into the computer using a USB cable. Make sure the unit is powered

on.

2. The computer will pop up a message indicating it has found new hardware: “LDDC

Controller”.

3. The new hardware wizard will launch. Check the “Install from a list or specific location”

option and click next.

4. Then select “Search for the best driver in these locations” and check the option to

“Include this location in the search”. Then click the browse button and locate the folder

on the CD where the LDDC/LSC drivers are located. Click next.

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5. A message window will launch asking if you want to continue installing this driver.

Select the “Continue Anyway” button.

6. It should now indicate the it is installing a driver for a “LDDC USB Communications

Port”.

7. A message should then indicate that the drivers have been successfully installed.

8. You can now communicate with the LDDC/LSC using a Com port selection. You can

view the Com port number assigned to the LDDC/LSC in your computers device

manager under Ports.

Driver Installation (Windows 7)

1. Plug the LDDC/LSC into the computer using a USB cable. Make sure the unit is powered

on.

2. The computer will pop up a message indicating it has found new hardware and is

installing device driver software.

3. A message will then indicate that the device drivers have not been successfully installed.

The Action Center may then launch with a list of options. Close the Action Center and do

not launch any of the actions.

4. Go to your computers device manager. This can be done by either right clicking on the

desktop “My Computer” icon and selecting properties, then Device Manager on the left

toolbar or go to Control Panel and then Device Manager.

5. In Device Manager you should see a device under the Other Devices called the LDDC

Controller. There will be a yellow exclamation point next to it.

6. Right click on the LDDC Controller and select update driver software.

7. Select Browse my computer for driver software and browse to the location of the USB

drivers for the LDDC/LSC. Typically found on the software CD. It will contain a file

called “lddccdc.inf”. You only have to select the folder in which the file resides, not the

file itself. Click next.

8. Windows will then indicate a warning window that the drivers are not verified. Select

Install this driver software anyway.

9. A message will then indicate that the drivers have been successfully updated and a LDDC

USB Communication Port is now available.

10. You can now communicate with the LDDC/LSC using a Com port selection. You can

view the Com port number assigned to the LDDC/LSC in your computers device

manager under Ports.

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3 User Controls

Figure 3 (User Controls)

The main user controls consist of:

•Enable/Disable. This button is used to initially enable the driver. On supplies that have

both an enable and a pulse control signal, this will activate the enable signal. On units

that do not have pulse control, this will enable the activation of the enable control signal

via the start/stop button.

•Page. This button is used to cycle through each page on the unit. Once the final page is

reached, it will go back to the first page.

•Up Arrow. This button is used to increment parameters or change selections. The amount

the parameter is increased is dependent on the digit position.

•Next. This is used to navigate to the next line item in a particular page. Some pages may

have only one item and others may have four.

•Start/Stop. This is used to either initiate pulsing of the supply using the pulse control

signal or it will activate the enable signal for supplies that do not have a pulse control.

The start will only become “active” once the enable condition has been activated.

•Left Arrow. This button will allow you to move the cursor to the next most significant

digit to the left.

•Down Arrow. This button is used to decrement parameters or change selections. The

amount the parameter is decreased is dependent on the digit position.

•Right Arrow. This button will allow you to move the cursor to the next least significant

digit to the right.

•Encoder/Selector. This rotary encoder can be used to increment or decrement parameters

or toggle between item selections. The amount of the increment/decrement is based on

the digit position. Pressing the encoder knob has the same function as the next button to

advance to the next menu line item.

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4 Display/Indicators

The following are used for user indicators and information:

•A 4 line x 16 character LCD backlit display. This display will show various information

depending on the active screen.

•3 indicator LEDs. An Enabled indicator (Blue) shows when the unit is in an enabled

state, ready to fire or start pulsing the supply. An Active indicator (Green) shows when

the unit is actively allowing the supply to fire. A Fault indicator (Yellow) will indicate if

any open interlock or fault condition has occurred.

5 Menu Information

The following describes the various LCD menu pages and operation of each item on the pages.

Any menu parameter shown inside brackets designates the potential to be navigated to and

manually altered.

Verification Page

This verification page is a warning to be sure that your maximum current setting and the driver

selected is correct. This maximum current setting can be verified or changed on the System

Setup #1 page. The driver can also be verified on the first setup page. Press any key to advance

the page to the main display. The next page displayed after pressing any key will be the first

setup page so you can verify that the correct setup is selected.

WARNING: If the maximum current does not match the driver you are controlling then

unexpected current levels may be driven if not careful. This could possibly damage the laser

diode.

Main Page

The main page shows status information, allows adjustment of the set current, measures the

current feedback and the voltage feedback from the driver.

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Line 1: Status indicator line that will show the system status, which would include any interlock

faults, enabled and actively running. The different status items displayed are:

•Disabled. Neither the enable state or the fire state is active. The unit is in a disabled state.

•Enble-Off. The unit has been enabled and is ready to be fired. If the supply has an enable

and a pulse control ability, the enable line (pin 1) will be active. If the unit does not have

pulse control cababilty, then the unit is just in an enabled state and the enable control line

is not yet active.

•Enble-On. This indicates that the unit is enabled and is actively firing (providing current

to the diode). In units with pulse capability, the enable line is high and the pulse control

signal (pin 8) is active. In units with only enable control, the enable line is now active.

•Fault. A system fault has occurred. Currently this means that an over-temp condition has

occurred. The Fault LED indicator will also be illuminated.

Line 2: I Set. This is the current setting to the diode driver on pin 7. The resolution of the setting

is based on the adjustment resolution and the maximum current set in the calibration page. This

controls the level of the I Program output signal. The signal will vary from 0-10V to control the

amount of current the power supply will provide to the laser diode.

Line 3: I Meas. This is the measured current from the current monitor signal from the driver on

pin 6. The current displayed is based on a reading from the power supplies 0-10V current

monitor signal. This is then displayed in amps based on the maximum current setting value. See

System Setup Page #1. When in CW mode, this value is read continously. When in a pulsed

mode, the value is sampled right after the rising edge of the pulse control signal. Please refer to

the Analog Measurement section of the manual for details and limitations.

Line 4: V Meas. This is the voltage measurement from the compliance voltage or terminal

voltage of the driver on pin 5. The voltage displayed is based on a reading from the power

supplies 0-10V voltage monitor signal. This is then displayed in volts based on the compliance

voltage setting value. See System Setup Page #1. This value is continously read. Please refer to

the Analog Measurement section of the manual for details and limitations.

Pulse Mode Page

The pulse mode page allows you to setup the type of pulse control that will be utilized. It also

allows you to control the pulsed repetition rate, desired pulse width and number of burst counts

(if in burst mode).

Line 1: Mode. This will set the system firing mode. Options include: Continuous Wave, Pulsed,

Burst, or Single Shot. If the unit is set to have pulse control disabled, then only CW mode will be

available and the remaining pulse options will be unavailable. See System Setup #2 page.

Line 2: Rate. This sets the repetition rate (in Hz) when in pulsed or burst mode. The maximum

rate is dependant on the max rate setting on System Setup #1 page.

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Line 3: Width. This sets the pulse width (in seconds) of the triggering pulse to the driver when in

pulsed, burst or single shot mode. The width adjustment will be limited to a maximum of roughly

90% of the rate period.

Line 4: Count. This sets the number of shots when in burst mode. The unit will pulse this number

of times when in burst mode.

Q-Switch, External Trigger and Sync Page (LSC 1650 Only)

The the q-sw/ext trigger/sync page will display options for enabling the q-sw trigger output, set

the q-sw trigger delay, set external triggering options and sync options. See the specifications

section pertaining to the LSC for details on the electrical and timing.

Line 1: Q-Switch. This will toggle between Enable and Disable for the q-switch trigger output

signal.

Line 2: Q-Switch Delay. This sets the amount of q-switch delay referenced from the falling edge

of the pulse control signal. This value can go positive or negative. Resolution is in 200ns

increments. There is a maxumum overal delay adjustment of 12.2 milliseconds or +/-6.1

milliseconds referenced from the falling edge. The delay amount will be limited based on the

pulse control width and period of the rep rate.

Line 3: External Trigger. This sets the external triggering option. The external trigger can be

used to start or stop the pulsing of the unit. How the unit operates in external trigger mode will

also depend on the pulse mode setting. The action can be set to either active high or active low

modes. Active high referes to a signal that transitions from a low state (0V) to a high state (>2V).

Active low referes to a signal that transitions from a high state (>2V) to a low state (0V). The

pulse mode setting will determine if the unit starts a sequence of pulses or only generates one

pulse. The various external triggering modes are:

•Disable. This disables the external trigger and the unit is only triggered internally.

•Start –Rising Edge. This will trigger the unit to start generating a pulse or sequence of

pulses on a rising edge signal.

•Start –Falling Edge. This will trigger the unit to start generating a pulse or sequence of

pulses on a falling edge signal.

•Stop –Rising Edge. This will stop the unit if it is already generating pulses when a rising

edge signal is received.

•Start/Stop –Rising Edge. This will start the unit on the first received rising edge pulse

and then stop the unit on the next rising edge pulse. Basically two pulses would start then

stop the unit.

•Start/Stop –Falling Edge. This will start the unit on the first received falling edge pulse

and then stop the unit on the next falling edge pulse. Basically two pulses would start

then stop the unit.

•Gate Active High. The unit will start running as long as a high level (>2V) is present on

at the external trigge input.

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