THORLABS ITC1 Series, ITC110, ITC102, ITC133, ITC100D Operation Manual

...

Download

OEM Laser Diode Controller

ITC1xx Operation Manual

2018

Version: Date:

3.1 10-Jul-2018

Item No.:

M0009-510-501

Contents

Foreword

1 General Information 4

2 Getting Started 6

3 Connecting Elements 9

123.2 ST2 I/O D-SUB Connector 15 pin

133.3 ST3 Display Module Connector

133.4 ST4 and ST5 SMB Coaxial Connectors

4 Operating Instruction 14

144.1 Connecting the Power Supply

154.2 Connecting Laser Diode and Photo Diode

41.1 Safety

51.2 Ordering Codes and Accessories

62.1 Parts List

62.2 Operating Principle

72.3 Operating Elements

93.1 ST1 I/O Connector 64 pin

184.3 Connecting TEC and Temperature Sensor

194.4 Connecting the Interlock

204.5 Polarity Check of the TEC

214.6 Operation

224.7 PID Adjustment

5 Connecting Scheme Examples 23

245.1 Laser Diode Controller

265.2 Temperature Controller

6 Display Module ITC100D 28

286.1 Preparing the ITC100D

296.2 ITC100D Jumper Settings

306.3 ITC100D Adjustment

7 Maintenance and Service 31

317.1 Troubleshooting

8 Appendix 33

338.1 Technical Data

338.1.1 Laser Diode Controller

348.1.2 Temperature Controller

358.1.3 Common Specifications

368.2 Dimensions ITC1xx

378.3 Dimensions ITC100D

388.4 Dimensions ITC100F

398.5 Certifications and Compliances

408.6 Warranty

418.7 Copyright and Exclusion of Reliability

418.8 Thorlabs 'End of Life' Policy

428.9 List of Acronyms

438.10Thorlabs Worldwide Contacts

We aim to develop and produce the best solution for your application in the field of optical measurement technique. To help us to live up to your expectations and improve our products permanently we need your ideas and suggestions. Therefore, please let us know about possible criticism or ideas. We and our international partners are looking forward to hearing from you.

Thorlabs GmbH

Warning

Sections marked by this symbol explain dangers that might result in personal injury or death. Always read the associated information carefully, before performing the indicated procedure.

Attention

Paragraphs preceeded by this symbol explain hazards that could damage the instrument and the connected equipment or may cause loss of data.

Note

This manual also contains "NOTES" and "HINTS" written in this form.

Please read these advices carefully!

ITC1xx

1 General Information

The Thorlabs ITC1xx OEM Laser Controller is a compact combined laser current and temperature controller for OEM applications on a single Euro-board (100 x 160 mm).

Combined Current and TEC Controllers

Maximum laser currents of 200 mA, 1 A, or 3 A

Constant Current (CC) and Constant Power (CP) Modes

Full PID feedback loop with independent P, I, and D Settings

Extensive protection against laser diode damage (softstart, interlock, temperature window for the laser diode, hardware limitation of TEC and laser current, interlock)

Overtemperature protection of the ITC1xx

Supports Many Standard Pin Configurations for Easy Integration into Systems

1.1 Safety

Attention

All statements regarding safety of operation and technical data in this instruction manual will only apply when the unit is operated correctly as it was designed for.

The used with the ITC1xx mai ns power supply must provide a galvanical isolation between AC mains input and DC output in order to avoid electric shock resulting in damage to your health or even death!

The used pow er supply as well as the ITC1xx m us t be connected properly to the protective earth ground.

The ITC1xx must not be operated in explosion endangered environments! Refer servicing to qualified personnel!

Only with written consent from Thorlabs GmbH may changes to single components be made or components not supplied by Thorlabs GmbH be used.

This precision device is only s erviceable if properly packed into the complete original packaging. If necessary, ask for a replacement package prior to return.

Warning

Laser emission is dangerous to human eye. Do not stare into the emitting aperture, wear protective glasses and observe the safety instructions supplied with the lase r diode.

Attention

The following statement applies to the products covered in this manual, unless otherwise spe c i fie d herein. The statement for other products will a ppear in the accompanying documentation.

This equipment has bee n tested and found to comply with the limits for a Class A digital device, pursuant to pa r t 15 of the FCC Rules and meets a ll requirements of the Canadian Interference-Causing Equipment Standard ICES-003 for digital apparatus. These limits are designed to provide reasonable protection against harmful interference w hen the equipment is opera ted in a commercia l environment. This equipment generates, uses, and can radia te radio frequency energy and, if not ins tal l e d and us e d in accordance with the instruction manual, may cause harmful i nter fe r ence to radio communications . Operation of this equipment in a r esidential area is likely to cause harmful interfere nce in which case the user will be required to correc t the interference at his own ex pense.

Thorlabs GmbH is not responsible for any radi o television interference caus ed by modifications of this equipment or the substitution or attachment of connec ting cables and

1 General Information

ITC102

OEM Laser Diode and Temperature Controller, ±200 mA / 12 W

ITC110

OEM Laser Diode and Temperature Controller, ±1 A / 12 W

ITC133

OEM Laser Diode and Temperature Controller, ±3 A / 18 W

ITC100D

Control and Display Panel for the ITC100 Series; removable

ITC100F

Front Plate for ITC100D

ITC100P

Female 64pin DIN Connector

CAB430

Cable for a LD and TEC Controller with 15-Pin D-Sub Connector to a Laser Diode Mount, 1.5 m

equipment other than those spec ified by Thorlabs GmbH. The correction of interference caused by suc h unauthorized modification, substitution or a ttachment w ill be the re sponsibility of the user.

The use of shielded I/O cables is required when connecting this equipment to any and all optional peripheral or host devices. Failure to do so may violate FCC and ICES rules.

Attention

Mobile tele phones, ce ll ular phones or other radio transmitters are not to be used within the ra nge of three meters of this unit si nce the electromagnetic field intensity may then exceed the maximum allowed disturbance values according to IEC 61326-1.

This product has been tested and found to comply with the limits ac cording to IEC 61326-1 for using connection cables shorter than 3 meters (9.8 feet).

1.2 Ordering Codes and Accessories

ITC1xx

2 Getting Started

2.1 Parts List

Inspect the shipping container for damage. If the sh ipping container seems to be d am aged , keep it unt il you have inspected the co nte nts

and you have inspected the ITC1xx mechanically and electrically. Verify that you have received the following items within the package:

1. ITC102/110/133 OEM Laser Diode and Temperature Controller

2. Operating Manual

2.2 Operating Principle

The I T C1 xx is an 100 x 16 0 mm board level cont roller that combines a low-noise, low-drift current source with a precise TE C controller. De signed for easy integration into OEM applicat ion s, these euro-sized boards are ideal for products or systems where excellent laser emission stability is required. The analog interfaces offer easy access to parameter settings and readout.

These laser diode con trollers support co nstan t current (CC) and constan t power (CP) modes, as well as all lase r and monitor diode polarities (CG/AG). The connected laser interface s with the controller through a 15-pin D-Sub conn ector. A fixed-ground-level d esign significan tly improves noise, tran sient suppression, and output sta bility. T he laser operating current can be modulated by an external control signal.

The b u ilt-in temperature controller includes a full PID feedback loop with independent P, I, and D settings, which can be individually optimized. A wide variety of temperature sensors (such as

thermistors and the AD590 temperature transducer) are supported. A standard 64-pin PCB

connector provides access to output signals, analog cont rol inp uts, p ower supply connections, temperature sensors and thermoelectric cooler elements.

A variety of safety measures allows an easy and safe operation of semiconductor laser diodes.

Softstart

Interlock

Hardware laser current limit

Hardware TEC current limit

Over temperature protection

Temperature window for the laser diode

Power supervision

Other features:

Constant current or constant power mode

Bipolar operation of laser diodes

2 mA floating photo current input

Modulation input

Individual TEC controller PID adjustment possible

Thermistor or AD590/LM335 temperature sensor selectable

Temperature tune input

Analog control output for ILD, ILIM, IPD, TSET, TACT, ITLIM, ITEC

2.3 Operating Elements

2 Getting Started

ITC1xx

Sets the laser diode limit current

Adjusts the laser set current or power (depending on CC or CP Mode)

Sets the TEC current limit

Adjust the set temperature (transducer) or resistance (thermistor)

TEC P share

TEC I share

TEC D share

Define the TEC temperature window

For CMR adjustment. Should not be changed by the user.

Laser current controller mode Switch to the left = constant power mode (CP) Switch to the right = constant current mode (CC)

Laser diode polarity Switch to the left = cathode grounded (CG) Switch to the right = anode grounded (AG)

Temperature sensor selection Switch to the left = thermistor Switch to the right = transducer (AD590 etc.)

TEC I share ON/OFF Switch towards ST2 = TEC I share ON Switch towards ST1 = TEC I share OFF.

JP1

Bias+

Jumper closed: bias+ connected to ST2 Pin 12 1) Jumper open: bias+ disconnected from ST2 Pin 12 1)

JP2

Bias-

Jumper closed: bias- connected to ST2 Pin 9

Jumper open: bias- disconnected from ST2 Pin 9

JP4

TEC window

Jumper closed: TEC window OFF Jumper open: TEC window ON

LED1a

Laser ON (Upper LED)

LED1b

TEC ON (Lower LED, closest to the PCB)

LED2

Power Supply OK

LED3

TEC temperature out of window

Potentiometers

Switches

Jumper

For compatibility with Thorlabs laser diode mounts

LEDs

3 Connecting Elements

Numbering of ST1 pins

Short Description of ST1 Pin Assignment

3.1 ST1 I/O Connector 64 pin

3 Connecting Elements

The following table lists the pin assignment of ST1 with respect to their functionality.

ITC1xx

Function

Range / Coefficient

ITC102

ITC110

ITC133

A30,C30

Supply voltage +11.4 V to +15.8 V

2.4 A 1)

3.2 A 1)

A31,C31

Supply voltage ground

A32,C32

Supply voltage -11.4 V to -15.8 V

2.4 A 1)

3.2 A 1)

A8, C8, A14, A16, A18, A21, C21

Analog measurement ground

Function

Range / Coefficient

ITC102

ITC110

ITC133

Temperature Controller

A4,C4

TEC - (GND)

±2 A

max. ±6 V

±2 A

max. ±6 V

±3 A

max. ±6 V

A5,C5

TEC +

AD590 +

- 20 to +80 °C / 253.2 to 353.3 µA 1 µA/°C

AD590 -

Thermistor (GND)

100 W to 80 k

Thermistor

TEC

(Measurement voltage; -5 to +5 V)

2.5 V/A

1.667 V/A

TEC, LIM

(Measurement voltage; 0 to +5 V)

2.5 V/A

1.667 V/A

A10

T / D R (Measurement voltage; -5 to +5 V)

0.5 V/°C (transducer)

-0.5 V/W (thermistor)

C10

act

/ R

act

2) (Measurement voltage)

-1 to + 4 V / 50 mV/°C (transducer)

+5 mV to +4 V / 50 mV/kW (thermistor)

C11

set

/ R

set

(Measurement voltage)

A11

tune

(Control voltage; -5 to +5 V)

20 °C/V (transducer) 16 kW/V (thermistor)

Laser Diode Current Controller

A15

LD Modulation Input (-5 to +5 V)

40 mA/V

200 mA/V

600 mA/V

A19

IPD 2) (Measurement voltage; 0 to +5 V)

2.5 V/mA

A20

ILD 2) (Measurement voltage) 0 to +5 V (CG) / 0 to -5 V (AG)

25 V/A

5 V/A

1.667 V/A

C20

LD, LIM

(Measurement voltage; 0 to +5 V

25 V/A

5 V/A

1.667 V/A

A22

Output PD Bias -

-5 V const.

C22

Output PD Bias +

+5 V const.

A23

Monitor (Photo) Diode Cathode

0 to 2 mA

(floating; differential input)

C23

Monitor (Photo) Diode Anode

A24,C24

Laser Diode Anode (CG)

+0.2 A

max. 4 V

+1.0 A

max. 4 V

+3.0 A

max. 4 V

A25,C25

Laser Diode GND

A26,C26

Laser Diode Cathode (AG)

-0.2 A

max. 4 V

-1.0 A

max. 4 V

-3.0 A

max. 4 V

Power Supply

Analog Signals

1) Without display module ITC100D

2) If a long connection cable is attached to this output, a 1 kW resistor should be inserted in series as close as possible to the output pin.

Digital Signals

Function

Logical Level

Temperature Controller

A13

TEC ON control input

H = TEC On

A12

TEC ON control output (open collector)

L = TEC on

C12

TEMP ERROR output (open collector)

L = Temperature window exceeded

C13

OTP output (open collector)

L = Heat sink over-temperature

C14

Digital GND (Common pin for all digital signals)

Laser Diode Current Controller

C15

LD ON control input

H = Laser on

A17

TTL MOD input

H = Laser on

C16

LD ON control output (open collector)

L = Laser on

C18

LIMIT LD control output (open collector)

L = Laser current limit reached

C17

Interlock

Interlock = CLOSED when connected

to C17 (R £ 430 W)

3 Connecting Elements

ITC1xx

Function

Range

ITC102

ITC110

ITC133

Temperature Controller

TEC - (GND)

±2 A

max. ±6 V

±2 A

max. ±6 V

±3 A

max. ±6 V

TEC +

AD590 +

- 20 to +80 °C / 253.2 to 353.3 µA

AD590 -

Thermistor (GND)

100 W to 80 k

Thermistor

Laser Diode Current Controller

Laser Diode Anode (CG)

+0.2 A

max. 4 V

+1.0 A

max. 4 V

+3.0 A

max. 4 V

Laser Diode GND

Laser Diode Cathode (AG)

-0.2 A

max. 4 V

-1.0 A

max. 4 V

-3.0 A

max. 4 V

Monitor (Photo) Diode Cathode

0 to 2 mA

(floating; differential input)

Monitor (Photo) Diode Anode

Output PD Bias - (set with JP2)

-5 V const.

Output PD Bias + (set with JP1)

+5 V const.

Interlock

Interlock = CLOSED when connected

to pin 5 (R £ 430 W)

Interlock GND

3.2 ST2 I/O D-SUB Connector 15 pin

The following table lists the pin assignment of ST2 with respect to their functionality.

3.3 ST3 Display Module Connector

Function

-9 V (not in use)

0 V Power supply for ITC100D

+5 V Power supply for ITC100D

Output IPD_DISP

Output ILD_DISP

Output ILDLim_DISP

Output TSET_DISP

Output TACT_DISP

Output ITECLim_DISP

Common ground for pin 4 to pin 9

Function

Coefficient

ITC102

ITC110

ITC133

ST4

Laser Diode Modulation Input LD MOD (-5 V to +5 V)

40 mA/V

200 mA/V

600 mA/V

ST5

Temperature Tune Input T TUNE (-5 V to +5 V)

20 °C/V (transducer) 16 kW/V (thermistor)

3.4 ST4 and ST5 SMB Coaxial Connectors

3 Connecting Elements

ITC1xx

4 Operating Instruction

4.1 Connecting the Power Supply

The ITC1xx OEM board requires a supply voltage of ± (1 2 ... 15) V for internal operation and for power supply of the laser diode and the TEC element.

The power supply must be regulated and free of ripple. The voltage must not e xceed the range of ± (11.4 ...15.8) V. L ower voltages will ca use the unit to o perat e improperly, higher voltages may damage the ITC1xx.

The power supply must be able to deliver the following curren t, both for the positive a n d negative supply voltage:

ITC102: 2.4 A ITC110: 3.2 A ITC133: 3.2 A

Note

Above current values are given without respect to po wer co nsu mp tion of the ITC100D display module, if used.

Note

The total combined o u t p ut current for the I TC133 is limited by the total therma l dissipation loss. With the standard heat sink, the t otal output current should be limited to 3 A (ILD+I

TEC

optimized cooling, e.g. using a fan o r a bigger h eat sink, allows 3 A LD current and 3 A TE C current at the same time, provided that the power supply can deliver 6.1 A.

Note

With ±15 V power supply and high o utput currents, the internal power dissipation o f the ITC1xx increases significantly. This may cause a degradation of the specifications. In such cases the use of a ±12 V supply is recommended.

The in crease of the heat sink te m p era tu re for a vertically installed ITC1xx bo a rd without forced air cooling can be calculated as follows:

(US = Supply voltage)

Example:

TEC,out

= 2 A; U

TEC,out

= 2.5 V; I

LDCOUT

= 0.2 A; U

LDCOUT

= 2V; US = ±12V

This results in an temp erature increase ∆T = 37.6 K. At 25 °C ambient temperatu re the heat

sink temperature reaches 62.6 °C.

Note

Using the ITC1xx with the display module ITC100D leads to an add ition al increa se of the heat sink temperature for about 3 K.

The horizontal m ou nting of the ITC1xx board degrades the heat dissipation , so that the hea t sink temperature increases! Forced air cooling may be required.

The maximum heat sink temperature is +85° C. When this lim it is exceed e d , the over-temperature protect ion activates and switches of f the TEC and LDC outputs. The controller ca n be switched on again only after the temperature has dropped by about 10° C.

4 Operating Instruction

4.2 Connecting Laser Diode and Photo Diode

The ITC1xx OEM controllers are designed to drive laser diodes up to a maximum current of

0.2 A, 1 A or 3 A, depending on the type, either with laser diode anode or cathode grounded.

The lase r diode is always sourced with respect to ground. Compared to a floating driver stage, this operation mode is a dvanta geous with respe ct to laser diode protection and to the st ab ility of the laser current.

The pho to d io d e can b e used either f lo a tin g, or with anode o r cathode grounded. Additionally, a bias voltage can be applied.

Connect the laser diode and the photodiode using shielded, twisted pair cables. T he anode and cathode connection of each device should be twisted.

Warning

Disconnecting the laser diode during operation may destroy the laser diode!

Below are shown possible configurations of th e laser an d m onitor (ph oto) diode combination and the connection scheme to the output connectors ST2 or ST1.

AG = Anode Grounded CG = Cathode Grounded

ITC1xx

Laser diode AG, photo diode CG, no bias:

Laser diode AG, photo diode AG, no bias:

Laser diode AG, photo diode floating, no bias:

The connection, sh own as dashed line, can b e made either at the laser or at the ITC1xx connector.

Laser diode AG, photo diode CG, -5 V bias:

Laser diode AG, photo diode AG, +5 V bias:

Attention

Reverse connection of the photo diode can pe rmanently damage the photo diode when using a bias voltage. Check the control voltage o utpu t IPD (A19) prior to enabling a bias voltage. The

output voltage must be positive!

Laser diode CG, photo diode CG, no bias:

Laser diode CG, photo diode AG, no bias:

Laser diode CG, photo diode floating, no bias:

4 Operating Instruction

The connection, sh own as dashed line, can b e made either at the laser or at the ITC1xx connector.

Laser diode CG, photo diode CG, -5 V bias:

Laser diode CG, photo diode AG, +5 V bias:

Attention

Reverse connection of the photo diode can pe rmanently damage the photo diode when using a bias voltage. Check the control voltage o utpu t IPD (A19) prior to enabling a bias voltage. The

output voltage must be positive!

ITC1xx

4.3 Connecting TEC and Temperature Sensor

In the drawings below, the bold pin numbers correspond to the n umb ering of the 15 pin D- Sub connector ST 2 , while p in numbers in (parantesis) co rrespon d to the pin nu m bering of the 64 pin connector ST1.

Connecting the TEC Element

Attention

Make sure that th e p olarity of th e T E C elem en t (Peltie r) is correct! Otherwise, the tem pe ratu re will run into the wrong direction, this way leading to a thermal damage of the laser diode!

Connecting a thermistor (NTC temperature sensor)

Connecting an AD590 temperature sensor

Connecting a LM335 temperature sensor

4 Operating Instruction

4.4 Connecting the Interlock

The interlock represents a current source (output pin 1 of ST2 resp. C17 of ST1), with the return pin 5 (ST2) o r C14 (ST1). The voltage between pin 1 and 5 (or C14 an d C17) is observed and used for enabling / disabling the output of the laser current controller.

Below are shown possible external connections to the interlock:

The voltage across the interlock pins m ust not exceed ~ 2.5 V, ot herwise the interlock is considered as open. For this reason, the resistance of the external interlock circuit m ust be

between 0 and 430 W. It is also possible to connect an LED (current through the LED is about 3.5 mA) as shown in the

right diagram . In this case the LED serves as an additional signal that the laser current is switched on.

When t he la ser cu rrent is switched on, the interlock is ch ecke d - if it is open, the lase r cannot be switched on. If th e inte rlock is interrupt ed during laser ope ration , th e lase r is shut down immediately, so the interlock circuit can be used fo r e m ergency switch-off of the la ser current as well.

When using the ITC1xx with Th orlab s laser diode mounts, the interlock f u nctio n is provided b y the mount. For details please see the Operation Man ual of the used laser diode mount.

ITC1xx

4.5 Polarity Check of the TEC

Preconditions

Connect TEC element and temperature sensor (see section Temperature Controller). The sensor must have good thermal contact to the active surface of the TEC element.

Switch on the ITC1xx.

Select the correct type of sensor (switch S3).

Set the appropriate value1) for I

TEC,LIM

ST1).

Polarity check of the TEC element

Adjust the temperature set point T

C11 of ST1) a few degrees away from the actual room temperature.

Observe T

If T

ACT

or R

ACT

runs away from the set point, the TEC element is reverse poled . Change

ACT

(ST1 pin C10) and switch on the module.

ACT

polarity and repeat the procedure.

, using the potentiometer P3 (measured at pin A9 of

SET

or R

using the potentiometer P4 (measured at pin

SET

If T

ACT

or R

is oscillating around the set point, the TEC element is con nected correctly,

ACT

but the P-, I- and D share values of the control loop need to be adjusted.

If T

ACT

or R

is settling properly to the set point, the TEC element has been connected

ACT

correctly, however the values for the P-, I- and D share of the control loop might still need to be adjusted (Refer to section PID Adjustment).

) The total com bined current f or the IT C133 is limited by the total th ermal dissipation loss.

When the standard heat sink is used, the total o utput current should be limited to 3 A (ILD + I

3 A). Op timized cooling by fan or bigger heat sink allows 3 A LD and 3 A T EC at the same

time under the condition that the power supply provides 6.1 A.

TEC

4 Operating Instruction

4.6 Operation

Switch the ITC1xx module On/Off

The laser current and the temperature controller are switched on and of by logic signals. These

signals are applied to the 64 pin connect or ST1:

pin C15: Laser current controller - H = On; L = Off

pin A13: Temperature controller - H = On; L = Off

Voltage levels:

+2.0 V £ H £ +25.0 V

·L £

Either TTL or CMOS signals can be applied, as well as the positive supply voltage can be used. The input resistance is about 10 k

Note

Please remember tha t the interlock circuit must b e closed to enable th e switch-on o f the laser current.

+1.1 V

Setting a Temperature Window

A temperature window can be enabled in order to protect the laser diode.

The temperature controller must not be switched on!

Keep your temperature sensor on a constant temperature.

Adjust the temperature set point T

SET

or R

using the potentiometer P4 (measured at pin

SET

C11 of ST1) in such a way that the difference between actual and set temperature corres-

ponds to the desired temperature window.

Now remove jumper JP4 and set potentiometer P8 fully clockwise (window = infinite).

Rotate P8 slowly counter clockwise until LED3 lights up.

The ITC1xx now is running in temperature protection mode.

ITC1xx

4.7 PID Adjustment

A temperature control loop works compa rab ly slow. Regulation oscillations h a ve a p e riod in t h e range of seconds.

The PID adjustmen t will opt imize th e dynamic behavior. The IT C1xx temp eratu re controller allows the three control loop parameters P, I and D to be set independently from 5% to 100%.

Example of a PID adjustment

Pre-condition: All limit values are set correctly, all polarities are correct, all set and relevant calibration values are entered, ambient temperature is about 20 °C.

Switch off the I share (switch S4 to OFF).

Set the P, I and D share to minimum (turn P5, P6 and P7 fully counter clockwise).

Observe the actual temperature T

C10) and switch on the temperature controller.

P share

Change the set temperature repeatedly between about 18 °C and 22 °C while observing the settling behavior of the actual temperature.

Increase the P share gradually. Higher values will increase the sett ling speed, too high values lead to regulation oscillations.

The P share has been set correctly if after only 2-3 overshoots t he actual temperature remains stable close to the set temperature.

or the actual thermistor resistance R

ACT

(ST1 pin

ACT

D share

Change the set temperature repeatedly between about 18 °C and 22 °C while observing the settling behavior of the actual temperature.

Increase the D share gradually. Higher values will decrease the amplitude of the overshoots.

The D share is set correctly when the actual temperature remains stable close to the set temperature after a minimum of overshoots.

I share

Turn on the I share (switch S4 to ON).

Change the set temperature repeatedly between about 18 °C and 22 °C while observing the settling behavior of the actual temperature.

Increase the I share gradually. Higher values will accelerate the settling to the set temperature.

The I share is set correctly when the actual temperature reaches the set temperature in shortest time without overshoots.

Note

In case of a high thermal load, the adjustment ranges of the I and D shares might be insufficient. The adjustment range can be increased by using additional foil capacito rs: C73 for the D share and C75,C76 and C77 for the I share, typically 0.47 µF t o 3.3 µF.

5 Connecting Scheme Examples

Below are given some examples of how to connect the ITC1xx. The 64 p in conne cto r ST1 allows to establish all necessary co n ne ctio ns. This is advantageous

when using the ITC1xx in OEM applications. Alternatively, the laser, the m onito r diode, the temperature sensor, the TEC and the interlock

connection can be made throu gh the 15 pin DSUB con ne ctor ST2. This way, a Th orlab s laser diode mount can be connected directly using the CAB430 cable (to be ordered separately).

Below are given some schematic examples how to connect peripherals to the ITC1xx for the case of using ST1 only, and for the case using both the ST1 and ST2 connectors.

For cle arne ss reason s, the con ne ction s of the the laser current controller and the temperature controller are separated.

ITC1xx

5.1 Laser Diode Controller

In the above schematic diagram a laser diode (AG - anode grounded) and a monitor (photo) diode (CG - cathode grounded) are connected to the 64 pin ST1.

5 Connecting Scheme Examples

In the above schematic diagram a laser diode (AG - anode grounded) and a monitor (photo) diode (CG - cathode grounded) are connected to the 15 pin DSUB connector ST2.

ITC1xx

5.2 Temperature Controller

In the above schema tic diagram a TEC eleme nt (Peltier) and a thermistor temperature sensor are connected to the 64 pin ST1.

5 Connecting Scheme Examples

In the above sche matic dia gram the TEC element (Peltier) and the thermistor temperature sensor are connected to the 15 pin DSUB connector ST2.

ITC1xx

P1 P2 P3 P4 P5 P6

6 Display Module ITC100D

Thorlabs GmbH offers an optional ITC100D disp la y module that can be mounted directly to the ITC1xx board. The ITC100D module can be covered using the optional ITC100F front panel.

An numeric 3½ digit d isplay with selectable by the user decimal p oint position will display the selected by the rotary switch parameter. Below the parameters are listed in the order when turning the rotary switch from the left to the right stop:

Monitor (photo) diode current I

Laser diode current I

Laser diode current limit I

Temperature set point T

Actual temperature T

TEC current limit I

ACT

TEC,LIM

(transducer) or R

LD,LIM

(transducer) or R

SET

(thermistor)

SET

(thermistor)

ACT

6.1 Preparing the ITC100D

The ITC100D can be m ounted d irectly to the ITC1xx board. Fix the displa y module to the threaded holes in the heat sink using the included two screws and distance holders.

Alternatively, the ITC100D can be mounted separately. Insert the ribbon cable connector of the ITC100D into ST3 of the ITC1xx board.

6 Display Module ITC100D

ITC1xx Type

Position of jumper "ILD"

Position of jumper "I

LIM

ITC102

ITC110

ITC133

Parameter

ITC102

ITC110

ITC133

mAAA

LD,LIM

mAAA

SET

/ T

ACT

(transducer)

°C°C°C

SET

/ R

ACT

(thermistor)

kWkWk

TEC,LIM

AAA

6.2 ITC100D Jumper Settings

On t he I TC100D PCB are two jumper banks (see red marking) that allow to set the po sition of the decimal point for the display according to the type of ITC1xx.

Set the jumpers depending on the ITC1xx type as listed below:

This results in the following units for the six selectable parameters:

ITC1xx

6.3 ITC100D Adjustment

The ITC100D is factory adjusted. However, in order to ensure the best display accuracy, it is recommended to re-adjust it from time to time.

The adjustment is carried out a t a single set point, using the ad justm en t potentiometers P1 to

P6:

P1 - Adjust I

Inject a known current from an externa l sou rce in to th e p h o to cu rrent inp u t (pins A 23 an d C23

of ST1). The current should be about 90% of full scale.

Use P1 to adjust the display reading to the input current value.

P2 - Adjust I

Set the la se r controller to constant current mode. A d ju st the laser current limit to maximum current and the laser current setting to about 9 0 % of maximum current. Connect an ampere meter to the laser output pins.

Use P2 to adjust the ITC100D reading to the measured output current.

P3 - Adjust I

LD,LIM

Set the laser controller t o constant current mode. Adjust the laser current limit to abou t 90% of maximum cu rrent and the laser current setting to maximum current. Connect an ampere meter to the laser output pins

Use P3 to adjust the ITC100D reading to the measured output current.

P5 - Adjust T

ACT

Set the temperature sensor t o a well defined temperatu re and adjust t he ITC100D reading to that temperature using P5.

P4 - Adjust T

SET

Adjust the set temperature to about 90% of the full scale value. Turn on the temperature control and wait until temperature has settled. Read the actual temperatu re T

bring the reading in accordance with T

using the potentiometer P4.

ACT

, switch to T

ACT

SET

and

Note

must be calibrated first!

ACT

P6 - Adjust I

TEC,LIM

Connect an ampere met er to the TEC outp ut pins. Ad ju st the TE C current limit to about 90% of full scale. Adjust the temperature set point to a significant higher value and turn on temperature control.

Adjust the I

TEC,LIM

reading to the ampere meter value using P6.

7 Maintenance and Service

Protect the ITC1xx from adverse weather co nditions. The ITC1xx is not water resistant.

Attention

To avoid damage to the instrument, do not expose it to spray, liquids or solvents!

The unit do es not need a regular maintenance by the user. It does not contain any modu les and/or components th at could be repaired by th e user himself. If a malfunction o ccurs, please check first the section Troubleshooting prior to contact Thorlabs GmbH for return instructions.

7.1 Troubleshooting

Unit does not work at all (no display)

Is the controller connected properly to the external power supply?

Connect the ITC1xx to a stable DC power supply with an output voltage (±12 to ± 15 V) and make sure, it is switched on.

You don’t get the desired laser output power

Is the interlock closed?

Check the resistance between the interlock pins of the connector jack - it must not exceed 430 W.

Is the laser output turned on?

Apply a logical "high" level to pin C15 of ST1 to turn on the laser output. The LED1a on the controller board must light up.

The hardware limit I

Adjust the hardware limit I

Is the laser diode installed properly?

Check the connection cables.

Is the switch S2 set according to the laser diode polarity?

Verify correct polarity and set S2 accordingly.

Is the photo diode connected properly?

Check the connecting cable.

Are you using a bias voltage with the photo diode in photo current mode?

Turn off bias voltage by interrupting the wiring bridge or change the polarity of the diode for photo element mode (refer to section Connecting Laser Diode and Photo Di-

ode)

might be set to 0.

LIM

using P1 to the desired value (pin C20 of ST1)

LIM

Is the desired output power adjusted correctly?

Set the ITC1xx to constant power mode (S1) and adjust the desired output power PLD, using P2.

Is the ITC1xx running in temperature p rotection mode?

Check if the temperature window is set correctly.

Check if the laser temperature is out of window (laser is then switched off automatically).

ITC1xx

You don’t get the desired laser operation temperature

Is the TEC connected properly to the connector?

Check all connections and cables.

Check the correct TEC polarity.

Is the temperature controller turned on?

Apply a logical "high" level to pin A13 of ST1 to turn on the laser output. The LED1b on the controller board must light up.

Is the temperature sensor connected properly and is the temperature set accordingly?

Check the connection and p olarity of the temperature sensor - p le ase refer to section

Connecting TEC and Temperature Sensor.

Adjust P4 to the desired temperature (C11 of ST1).

The TEC current limit might be set to 0?

Adjust P3 to the desired TEC current limit (A9 of ST1).

Is the ITC1xx set correctly for the used temperature sensor?

Select the temperature sensor using S3.

Set temperature differs from actual temperature (of the laser)

Is the temperature oscillating?

Adjust the PID parameters carefully - please refer to section PID Adjustment.

If an error or malfunction appears that is not listed above, please contact Thorlabs.

8 Appendix

Parameter

ITC102

ITC110

ITC133

Current Control

Display Laser Current on

LED

Trim Potentiometers (15-Turn)

ILD, IPD resp. PLD, I

LD,LIM

Control Range of Laser Current

0 to ± 200 mA

0 to ± 1 A

0 to ± 3 A 1)

Compliance Voltage

> 4 V

Setting Accuracy / Repeatability (full scale)

± 2 % typ. / ± 0.1 %

Noise (10Hz to 10MHz, rms)

< 2 µA

< 6 µA

< 25 µA

Drift (30 min, 0 to 10Hz, typ.)

< 20 µA

< 100 µA

< 300 µA

Temperature Coefficient

< 50 ppm/°C

Power Control

Control Range Photo Diode Current

5 µA to 2 mA

Accuracy / Repeatability (full scale)

± 2% typ. / ±0.1%

Photodiode Reverse Bias Voltage

0 V or 5 V

Current Limit

Setting Range

0 to >200 mA

0 to >1 A

0 to >3 A

Setting Accuracy / Repeatability (full scale)

± 2% typ. / ± 0.1%

Analog Modulation Input

Input Resistance

10 k

Modulation coefficient, CC

40 mA/V ±5%

200 mA/V ±5%

600 mA/V ±5%

Small Signal 3 dB-Bandwidth, CC

DC to 200 kHz

DC to 50 kHz

DC to 20 kHz

Modulation Coefficient, CP

0.4 mA/V ±5%

TTL Modulation Input

Rise/Fall Time

< 10 µs

< 50 µs

< 100 µs

TTL Control Input

LD ON

Measurements and Control Outputs

Analog Measurement Values

ILD, IPD, I

LD,LIM

Measurements Outputs

0 to ± 5 V

Measurements Accuracy typ. (Load > 500kW)

± 2%

TTL Control Outputs

LD ON, LIMIT

8.1 Technical Data

8.1.1 Laser Diode Controller

8 Appendix

) The total combined current for the ITC133 is limited by the total thermal dissipation loss. Optimized cooling by

fan or bigger heat sink allows 3 A LD and 3 A TEC at the same time provided the power supply provides 6.1 A.

All technical data are valid at 23 ± 5°C and 45 ± 15% rel. humidity (non condensing)

ITC1xx

Parameter

ITC102

ITC110

ITC133

Temperature Control

Display TEC current ON

LED

Trim Potentiometers (15-Turn)

TEC,LIM

, T

SET

/ R

SET

Trim Potentiometers (1-Turn)

P, I and D Share

TEC Output

Control Range of TEC Current

-2 A to +2 A

-3 A to +3 A 1)

Compliance Voltage

> 6 V

Maximum Output Power

12 W

18 W

Noise and Ripple

< 1 mA

< 3 mA

Thermistor Temperature Sensors

Control Range

100 W to 80 k

Setting Accuracy (full scale, typ.)

± 2%

Repeatability (full scale)

± 0.1%

Temperature Stability typ.

< 2

IC Temperature Sensors AD590, AD592, & LM335

Control Range

- 20 °C to +80 °C

Setting Accuracy (full scale, typ.)

± 2%

Repeatability (full scale)

± 0.1%

Temperature Stability typ.

< 0.004 °C

TEC Current Limit

Setting Range

Accuracy typ.

± 5%

Temperature Control Inputs

Analog Control Input

SET

/ R

SET

Input Resistance

10 k

Input Coefficient Thermistor

16 kW/V

Input Coefficient IC-Sensor

20 °C/V

TTL Control Input

TEC ON

Measurement and Control Outputs

Analog Outputs

SET/RSET

, T

ACT/RACT

, I

TEC,LIM

TEC

, DT/DR)

Measurement Accuracy typ. (Load > 500 kW)

±2%

TTL Control Outputs

TEC ON, TEMP OK

8.1.2 Temperature Controller

) The total combined current for the ITC133 is limited by the total thermal dissipation loss. Optimized cooling by

fan or bigger heat sink allows 3 A LD and 3 A TEC at the same time provided the power supply provides 6.1 A.

All technical data are valid at 23 ± 5°C and 45 ± 15% rel. humidity (non condensing)

8 Appendix

ITC102

ITC110

ITC133

Supply Voltage/Current

±12 V to ±15 V

2.3 A

±12 V to ±15 V

3.1 A

±12 V to ±15 V

3.1 A 1)

Operating Temperature

0 to + 40 °C

Storing Temperature 2)

-40 °C to +70 °C

Warm-Up Time for Rated Accuracy

10 min

Dimensions (W x H x D)

100 x 42 x 160 mm (Eurocard)

Weight

< 0.7 kg

8.1.3 Common Specifications

) The total combined current for the ITC133 is limited by the total thermal dissipation loss. Optimized cooling by

fan or bigger heat sink allows 3 A LD and 3 A TEC at the same time provided the power supply provides 6.1 A.

) non-condensing

All technical data are valid at 23 ± 5°C and 45 ± 15% rel. humidity (non condensing)

ITC1xx

All dimensions in mm

8.2 Dimensions ITC1xx

8.3 Dimensions ITC100D

All dimensions in mm

8 Appendix

ITC1xx

All dimensions in mm

8.4 Dimensions ITC100F

8.5 Certifications and Compliances

8.6 Warranty

Thorlabs GmbH warrants material and prod uction of the ITC1xx for a pe riod of 24 months sta rting with the date of shipme nt. During this warranty period Tho rlabs GmbH will see to defaults by repair or by exchange if these are entitled to warranty.

For warranty repairs or service the unit must be sent back to Thorlabs GmbH. The customer will carry the shipping costs to T horlabs GmbH, in case of warranty repairs Thorlabs GmbH will carry the shipping costs back to the customer.

If no warranty repair is applicable the customer also has to carry the costs for back shipment. In case of shipment from outside EU duties, taxes etc. which should arise have to be carried by

the customer.

Thorlabs GmbH warrants the hard- an d /o r software determined by Thorlabs GmbH fo r this unit to operate fault-free provided that they are handled according to our requirements. However, Thorlabs GmbH d oes not warrant a fau lt f ree and uninterrupted operation of th e unit, of the software or firmware for special applications nor this instruction manual to be error f ree. Thorlabs GmbH is not liable for consequential damages.

Restriction of Warranty

The warranty mentio ne d before do es not cover errors and defects being the result of improp er treatment, software or inte rfa ce not supplied by us, m odif icatio n, misuse or operation outside the defined ambient stated by us or unauthorized maintenance.

Further claims will not be consented to and will not be acknowledged. Thorlabs GmbH does explicitly not warrant the usability or the economical use for certain cases of application.

Thorlabs GmbH rese rves t he right to change this instruction manual or the technica l data of the described unit at any time.

8 Appendix

8.7 Copyright and Exclusion of Reliability

Thorlabs GmbH has taken every po ssible ca re in preparing this document. We however assume no liability for t he content, completeness or quality of the inf o rmat ion contained therein. The content of this document is regularly up dat ed and adapt ed to reflect the cu rrent status o f the hardware and/or software. We fu rtherm ore do not guarantee that this product will f u nction without errors, even if the stated sp ecifications are adhered to.

Under no circumstances can we guarante e that a particular o b jective can be achieved with the purchase of this product.

Insofar as permitted under statutory regulations, we assume no liability for direct damage, indirect damage or damages suffered b y third parties resulting from the purchase o f this product. In no event shall any liability exceed the purchase price of the product.

Please n ot e that the conten t of this docume nt is neither part of any previous o r existing agreement, prom ise , representation or legal relationship, nor an a ltera tio n or amendment thereof . All obligations of Thorlabs GmbH result from the respe ctive contract of sale, which also includes the complete and exclusively applicable warranty regulations. T h e se contractual warranty regulations are neither extende d nor limited by the inf orm atio n contained in this document. Should you require further information on this pro du ct, or encounter specific problems that are not discussed in sufficient d etail in the documen t , please contact your loca l Thorlabs GmbH dealer or system installer.

All rights reserved. This d o cu m e n t may not be reproduced , transmitted or translated to a no t h er language, either as a whole or in parts, without the prior written permission of Thorlabs GmbH.

8.8 Thorlabs 'End of Life' Policy

As required by the WE EE (Waste Electrical a nd Electronic Equipm ent Directive) of the European Community and the correspondin g national laws, Thorlabs Gm bH offers all end users in the EC the possibility to return “end of life” units without incurring disposal charges.

This offer is valid for Thorlabs GmbH electrical and electronic equipment

sold after August 13th 2005

marked correspondingly with the crossed out “wheelie bin” logo (see figure below)

sold to a company or institute within the EC

currently owned by a company or institute within the EC

still complete, not disassembled and not contaminated

As the WEEE directive a pp lies t o self contained o pera tion al electrical and electronic produ cts, this “end of life” take back service does not refer to other Thorlabs GmbH products, such as

pure OEM products, that means assemblies to be built into a unit by the user (e . g. OEM laser driver cards)

components

mechanics and optics

left over parts of units disassembled by the user (PCB’s, housings etc.).

Waste treatment on your own responsibility

ITC1xx

Crossed out

"Wheelie Bin" symbol

If you do not retu rn an “end of lif e” unit to Thorlabs GmbH, you mu st hand it to a company specialized in waste reco very. Do not d ispo se of the u n it in a litter bin or at a public waste disposal site.

WEEE Number (Germany) : DE97581288

Ecological background

It is well known that waste treatme nt pollutes the environmen t by relea sing to xic produ cts during decomposition. The aim of the Eu rope an RoHS Directive is to reduce th e content of toxic substances in electronic products in the future.

The intent of the WEEE Directive is to enforce the recycling of WEEE. A co n t rolled recycling of end-of-life products will thereby avoid negative imp acts on the environment.

8.9 List of Acronyms

AC Alternating Current ADC Analog to Digital Converter AG Anode Ground CC Constant Current CG Cathode Ground CP Constant Power DAC Digital to Analog Converter D Share Differential share DC Direct Current DIL Dual In-line DIN Deutsche Industrie Norm IC Integrated Circuit ILD I (current) Laser Diode IPD I (current) Photo Diode I Share Integral share ITEC I (current) – Temperature Controller JP JumPer LD Laser Diode LDC Laser Diode Controller LED Light Emitting Diode N.C. Not Connected PD Photo Diode PID Proportional, Integral, Differential (regulator) P Share Proportional share SMB Sub Miniature Connector typa "B" TEC ThermoElectric Cooler (Peltier Element)

8.10 Thorlabs Worldwide Contacts

USA, Canada, and South America

Thorlabs, Inc. 56 Sparta Avenue Newton, NJ 07860 USA Tel: 973-300-3000 Fax: 973-300-3600

www.thorlabs.com www.thorlabs.us (West Coast)

Email: sales@thorlabs.com Support: techsupport@thorlabs.com

UK and Ireland

Thorlabs Ltd. 1 Saint Thomas Place, Ely Cambridgeshire CB7 4EX United Kingdom Tel: +44-1353-654440 Fax: +44-1353-654444

www.thorlabs.com

Email: sales.uk@thorlabs.com Support: techsupport.uk@thorlabs.com

Europe

Thorlabs GmbH Hans-Böckler-Str. 6 85221 Dachau Germany Tel: +49-8131-5956-0 Fax: +49-8131-5956-99

www.thorlabs.de

Email: europe@thorlabs.com

Scandinavia

Thorlabs Sweden AB Bergfotsgatan 7 431 35 Mölndal Sweden Tel: +46-31-733-30-00 Fax: +46-31-703-40-45

www.thorlabs.com

Email: scandinavia@thorlabs.com

France

Thorlabs SAS 109, rue des Côtes 78600 Maisons-Laffitte France Tel: +33-970 444 844 Fax: +33-825 744 800

www.thorlabs.com

Email: sales.fr@thorlabs.com

Brazil

Thorlabs Vendas de Fotônicos Ltda. Rua Riachuelo, 171 São Carlos, SP 13560-110 Brazil Tel: +55-16-3413 7062 Fax: +55-16-3413 7064

www.thorlabs.com

Email: brasil@thorlabs.com

Japan

Thorlabs Japan, Inc. 3-6-3 Kitamachi Nerima-ku, Tokyo 179-0081

Japan

Tel: +81-3-6915-7701 Fax: +81-3-6915-7716

www.thorlabs.co.jp

Email: sales@thorlabs.jp

China

Thorlabs China Room A101, No. 100 Lane 2891, South Qilianshan Road Putuo District Shanghai 200331 China Tel: +86-21-60561122 Fax: +86-21-32513480

www.thorlabs.com

Email: chinasales@thorlabs.com

8 Appendix

www.thorlabs.com

THORLABS ITC1 Series, ITC110, ITC102, ITC133, ITC100D Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 General Information

1.1 Safety

1.2 Ordering Codes and Accessories

2 Getting Started

2.1 Parts List

2.2 Operating Principle

2.3 Operating Elements

3 Connecting Elements

3.1 ST1 I/O Connector 64 pin

3.2 ST2 I/O D-SUB Connector 15 pin

3.3 ST3 Display Module Connector

3.4 ST4 and ST5 SMB Coaxial Connectors

4 Operating Instruction

4.1 Connecting the Power Supply

4.2 Connecting Laser Diode and Photo Diode

4.3 Connecting TEC and Temperature Sensor

4.4 Connecting the Interlock

4.5 Polarity Check of the TEC

4.6 Operation

4.7 PID Adjustment

5 Connecting Scheme Examples

5.1 Laser Diode Controller

5.2 Temperature Controller

6 Display Module ITC100D

6.1 Preparing the ITC100D

6.2 ITC100D Jumper Settings

6.3 ITC100D Adjustment

7 Maintenance and Service

7.1 Troubleshooting

8 Appendix

8.1 Technical Data

8.1.1 Laser Diode Controller

8.1.2 Temperature Controller

8.1.3 Common Specifications

8.2 Dimensions ITC1xx

8.3 Dimensions ITC100D

8.4 Dimensions ITC100F

8.5 Certifications and Compliances

8.6 Warranty

8.7 Copyright and Exclusion of Reliability

8.8 Thorlabs 'End of Life' Policy

8.9 List of Acronyms

8.10 Thorlabs Worldwide Contacts