THORLABS SLSLLG2 User manual

SLSLLG2
Liquid Light Guide
Adapter with Shutter
User Guide

Liquid Light Guide Adapter with Shutter
Table of Contents
Chapter 1Warning Symbol Definitions ...........................................1
Chapter 2Safety.................................................................................2
Chapter 3Description........................................................................3
3.1.Overview.......................................................................4
Chapter 4Setup and Operation ........................................................ 6
4.1.ConnectionGuide..........................................................6
4.2.ExchangingLLGAdaptersandAdjustingAdapter
Position.........................................................................6
4.2.1.Dismantling and Installing the LLG Adapter:...............................6
4.2.2.Adjusting the Position of the LLG Adapter:..................................7
4.3.ManualShutterOperation.............................................8
4.4.ExternalModulationInput.............................................9
4.5.ProtectedMode...........................................................10
4.6.UnprotectedMode......................................................10
4.7.DefaulttoOn...............................................................11
4.8.InterlockOutput..........................................................11
4.9.Indicators....................................................................12
4.9.1.Power LED.................................................................................12
4.9.2.Status LED.................................................................................12
4.10.TimingPerformance....................................................13
4.11.TypicalPerformance....................................................14
Chapter 5Specifications .................................................................15
5.1.OpticalSpecifications...................................................15
5.2.ShutterSpecifications..................................................16
Chapter 6Interface Connector .......................................................17
Chapter 7Cleaning and Maintenance ............................................ 18
Chapter 8Troubleshooting .............................................................19
Chapter 9Mechanical Drawings..................................................... 20

Liquid Light Guide Adapter with Shutter
9.1.LLGAdapterandShutter..............................................20
9.2.ShutterController........................................................21
Chapter 10Regulatory.......................................................................22
Chapter 11Certificate of Conformance ...........................................23
Chapter 12Thorlabs Worldwide Contacts....................................... 24

Liquid Light Guide Adapter with Shutter Chapter 1: Warning Symbol Definitions
Rev A, September 8,, 2016 Page 1
Chapter 1 Warning Symbol Definitions
Below is a list of warning symbols you may encounter in this manual or on your
device.
Symbol Description
Direct Current
Alternating Current
Both Direct and Alternating Current
Earth Ground Terminal
Protective Conductor Terminal
Frame or Chassis Terminal
Equipotentiality
On (Supply)
Off (Supply)
In Position of a Bi-Stable Push Control
Out Position of a Bi-Stable Push Control
Caution: Risk of Electric Shock
Caution: Hot Surface
Caution: Risk of Danger
Warning: Laser Radiation
Caution: Spinning Blades May Cause Harm

Liquid Light Guide Adapter with Shutter Chapter 2: Safety
Page 2 CTN008800-D02
Chapter 2 Safety
All statements regarding safety of operation and technical data in this instruction
manual will only apply when the unit is operated correctly.
The unit is supplied with line cord with a North American or European plug. Make
sure your line cord fits your local outlets.
The unit is equipped with an external switching power supply for voltages from 100
to 240 VAC. There is no need to change the fuse when selecting your regional
mains voltage. There are no user serviceable parts in this product.
CAUTION
DO NOT OPEN HOUSING! The SLSLLG2 shutter and controller has no user-
serviceable parts. Do not operate without cover installed.
WARNING
Do not operate in wet or damp conditions.
WARNING
Mobile telephones, cellular phones, or other radio transmitters should not be
used within the range of three meters of this unit since the electromagnetic
field intensity may exceed the maximum allowed disturbance values
according to EN50082-1.
WARNING
Space the front side of the shutter head at least 1/8" from ferrous materials.
Keep shutter head away from strong magnetic fields. Both may interfere with
shutter operation.
WARNING
In the event of a power failure the shutter will not close. See Page 5
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Liquid Light Guide Adapter with Shutter Chapter 3: Description
Rev A, September 8,, 2016 Page 3
Chapter 3 Description
The SLSLLG2 Liquid Light Guide (LLG) Adapter with Shutter is designed to
integrate with Thorlabs’ SLS301, SLS401, and SLS402 Light Sources. The LLG
adapter couples the output of these light sources into Ø3 mm or Ø5 mm core liquid
light guides. The adapter includes an integrated shutter, , focusing lens, a Ø3 mm
LLG to SM1 Adapter, and a Ø5 mm LLG to SM1 Adapter. An external controller,
switching power supply, AC cord, and manual are included with the LLG adapter.
The shutter connects to the controller through a shielded four-conductor cable
using a four-pin, mini-DIN connector. An included controller provides the drive
levels required for optimal performance and monitors the state of the shutter. It
features a BNC connector for external modulation and an interlock output jack for
safety. A power supply (input AC 100-240V, output DC 5V) is included.
The SLSLLG2 can also be directly controlled using either the buttons on the
controller or via an external modulation source. Two buttons are on top of the
controller unit, one turns the power on and off while the button labeled ENABLE
opens or close the shutter. Manually depressing the ENABLE button will open and
close the shutter. To use the modulation input, press and hold the ENABLE button
for 3 seconds. The SLSLLG2 will power on in the last used mode, either Manual
or External Modulation Mode.
The external modulation port can drive the shutter up to a maximum frequency of
15 Hz. In normal operation, when the voltage of the external modulation pulse is
high, the shutter will open. When the voltage is low, the shutter will be closed. In
normal operation, the shutter will shut down if it is operated at the maximum
frequency for long periods of time in order to prevent overheating. In Unprotected
Mode, this safety feature is disabled and the unit may be damaged if operated for
long periods of time without thermal control.
Along with overheating protection, the SLSLLG2 is equipped with laser and blade
jam safety features. The controller detects the state of the shutter using an internal
optical sensor inside the shutter package. An optical sensor detects the position of
the shutter blade, confirming if the shutter is open or closed. This feature, when
used with the interlock connector, is ideal for applications where a laser safety
lockout is required. In the event of a failure such as a blade jam, the SLSLLG2
shutter will shut down and the state of the interlock will be indicated by a red LED
light. The SLSLLG2 shutter can detect when the blades are not operating at the
set frequency and will shut down to prevent damage to the shutter.

Liquid Light Guide Adapter with Shutter Chapter 3: Description
Page 4 CTN008800-D02
3.1. Overview
Figure 1 SLSLLG2 Side View
Figure 2 SLSLLG2 Mounted on SLS401 Light Source

Liquid Light Guide Adapter with Shutter Chapter 3: Description
Rev A, September 8,, 2016 Page 5
Figure 3 Controller Front View
Figure 4 Controller Rear View
Enable Button
Status LED
Power LED
Power Button
Interlock Jack
External
Modulation Input
Shutter Head
Jack
DC Input Jack

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Page 6 CTN008800-D02
Chapter 4 Setup and Operation
4.1. Connection Guide
1. Remove components from the case.
2. Secure the SLSLLG2 to your setup using the SM2 thread. In this
process, you can use the SM2 nut to lock the SLSLLG2 at any direction
you want, such as keeping the cable downward.
3. Connect the AC power cord to the power supply and then connect to the
AC power outlet. The SLSLLG2 is supplied with an external AC-DC
switching power supply rated at 100 – 240 VAC, 47 – 63 Hz, and 5 VDC
at 2.4 A maximum output.
4. Place the controller on a flat surface. Connect the mini-DIN connector
from the shutter head, with the arrow on the connector pointing up, into
the controller.
5. Turn the unit on by pressing the power button.
4.2. Exchanging LLG Adapters and Adjusting Adapter
Position
4.2.1. Dismantling and Installing the LLG Adapter:
Figure 5
1. Use a spanner wrench (Item # SPW602) to remove the retaining ring,
then remove the installed LLG adapter by hand.
2. Position the desired LLG adapter, then lock it in place by tightening the
retaining ring using the spanner wrench.
LLG Adapter
Retaining Ring
Spanner Wrench

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Rev A, September 8,, 2016 Page 7
4.2.2. Adjusting the Position of the LLG Adapter:
One can adjust the position of the included liquid light guide adaptor (Item #
AD3LLG or AD5LLG) to get the strongest light from the light source.
The adjustment can be done as shown in below:
1. Use a spanner wrench (Item # SPW602) to loosen the retaining ring.
2. Turn the LLG adapter by hand until the desired position is reached.
3. Secure the LLG adapter by tightening the retaining ring using the spanner
wrench.
Retaining Ring
Spanner Wrench
LLG Adapter

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Page 8 CTN008800-D02
4.3. Manual Shutter Operation
There are two LEDs on top of the unit. The LED next to the power button is green
when the power is on or off when the power is off. The LED next to the enable
button indicates the status of the controller as shown in the table below.
Status LED Color Meaning
Off Shutter is Closed
Green Shutter is Open
Amber Controller is in Unprotected Mode
and Shutter is Open
Red There is an Error
Note that when the shutter is closed and in unprotected mode, the LED will be off.
Additionally, unplugging the shutter from the wall outlet will not change its mode,
so if it is in Unprotected Mode and unplugged, it will still be in Unprotected Mode
when plugged back in again. See page 10 for more information on Unprotected
Mode.
The shutter generally defaults to the closed position. The following table outlines
the various conditions that will change the shutters state. For more information on
the meaning of the LED colors and modes, please see the table on page 8 and
page 12.
Condition
Shutter State
Open Closed
Depressing the ENABLE button Closes Opens
Power plugged into either wall outlet
or controller Closes Stays Closed
Power button depressed to turn on Closes Stays Closed
Power button depressed to turn off Closes Stays Closed
Unplugging power cord from wall
outlet or controller Stays Open Stays Closed
Unplugging shutter from controller Stays Open Stays Closed
Plugging shutter into controller while
it is on
Shutter will revert to whatever state it indicated
by the controller, usually no change.
To manually control the shutter, after powering on the unit, simply press the ENABLE
button. This will open the shutter. Depressing the button a second time will close the
shutter. If the unit is in External Modulation Mode, depressing the ENABLE button once
will put the device into Manual Mode without opening the shutter and the Status LED
will flash four times.
The SLSLLG2 is set to the last mode it was in when it is powered on. Hitting the
ENABLE button puts it in Manual Mode if it was in External Modulation Mode or
Unprotected Mode. This disables the external modulation input connector (the BNC

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Rev A, September 8,, 2016 Page 9
connector port labeled TTL Input on the controller). To return the device to External
Modulation Mode, press and hold the ENABLE button for 3 seconds.
The Status LED will flash two times to indicate the device is in External Modulation
Mode, and the shutter will start changing state provided there is a TTL signal active on
the port.
4.4. External Modulation Input
CAUTION
Prolonged modulation of these shutters will eventually result in premature
component wear and failure. This device is not intended for long-term
continuous modulation.
Tocontrol the SLSLLG2 shutterstateusing an external,modulatedTTL signal, connect
the signal source to the shutter controller at the BNC TTL Input connector. Activate the
TTL signal source. The shutter will be in the last state it was in when powered on,
therefore if it does not begin modulating, press and hold the ENABLE button to enter
the External Modulation Mode. The TTL requirements are:
TTL Level Input Voltage
oA High Logic state is 2 – 5 V
oA Low Logic state is 0 – 0.8 V
At the Modulation Input
oLogic Level High opens the shutter
oLogic Level Low closes the shutter
The maximum continuous operating frequency limit is 10 Hz. The unit can operate up
to 15 Hz for a limited amount of time. After the time limit is exceeded or the modulation
frequency exceeds 15 Hz, the shutter will disable, the Status LED will turn red, and the
interlock will open. See the specifications on page 15 for more information on how long
the unit can be run from 10 to 15 Hz.
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Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Page 10 CTN008800-D02
4.5. Protected Mode
When the SLSLLG2 operates in Protected Mode, the device will shut down if run
for too long over 10 Hz. This is in order to protect the device from overheating. The
unit does not monitor the temperature directly, but the time limit is based on
calculations assuming no heat control at room temperature. If the user utilizes
some kind of heat mitigation system, they may set the unit to Unprotected Mode
where the time limit alarm is ignored and the device will operate continuously. Note
that operating the shutter in Unprotected Mode may damage the unit.
The following table outlines the length of time the device can be operated safely
above 10 Hz.
Protected Mode Specifications Value
Max Operating Freq. Continuous 10 Hz
Max Operating Freq., 30 min 11 – 13 Hz
Max Operating Freq., 10 min 14 – 15 Hz
4.6. Unprotected Mode
The SLSLLG2 normally operate in Protected Mode. In this mode, the unit will
disable the blades, turn the Status LED red, and trip the interlock when the unit is
run over 10 Hz and the time limit is reached (see Specifications on page 15 for
more information). In Unprotected Mode, the unit will not disable under those
conditions.
To enter Unprotected Mode, hold both the POWER and ENABLE buttons until the
Status LED flashes amber four times. While in Unprotected Mode, the Status LED
will remain amber, so any condition that normally would be green will now be
amber. To exit Unprotected Mode, depress both buttons until the Status LED
flashes green four times. This will put the device back into External Modulation
Mode. Depressing the ENABLE button while in Unprotected mode, will exit
Unprotected Mode and enter Manual Mode. The LED will turn green.
The table below summarizes the different states and how to enter them.
Current
State1To EMM To UPM To MM
EMM1Hold power and enable
buttons for 3 sec Press enable button
UPM1Hold power and enable
buttons for 3 sec Press enable button
MM1Hold enable buttons
for 3 sec Hold power and enable
buttons for 3 sec
1External Modulation Mode (EMM), Unprotected Mode (UPM), Manual Mode (MM)

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Rev A, September 8,, 2016 Page 11
4.7. Default to On
The default to on setting allows the SLSLLG2 to automatically power ON when DC
is applied; for users that require auto power ON when DC is applied without
pressing the POWER button. To enter or exit this setting, follow the steps below:
1. Connect the DC power supply.
2. Press and hold the Enable button; then press and hold the Power button
simultaneously for (1 second).
3. Both the Power and Enable Led will light.
4. Release both the Power and Enable buttons.
5. The Power and Enable LEDs will remain on for >3 seconds.
6. The controller will now reboot and power on (Power LED on).
Note, when set to Default to On, the POWER button functions normally. Older units
may not have the Default to On feature. Please contact Thorlabs Tech Support if
you believe your unit may need to be updated to include this feature.
4.8. Interlock Output
An interlock output is provided. In the event of a failure, the interlock circuit will trip
and the contacts will open. The interlock uses contacts to represent the state of
operation.
The contacts are set NO (Normally Open). If the contacts are NO, the power is
OFF and DC is disconnected. In a normal operating condition the contacts will be
closed where the feedback monitor does not detect any error.
There are three different error conditions where the contacts would be in an open
state. These error conditions would result when:
The shutter is not changing state with reference to its drive signal, such
as a jammed blade.
An over temperature condition has been detected.
The maximum drive frequency of 15 Hz is exceeded.
All error conditions result in the Status LED changing to red.
Specification of Interlock Contacts
Max Operating voltage 12 VDC
Max Current 1 A
Mating Connector 2.5 mm Mono Phono Jack

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Page 12 CTN008800-D02
If you wish to make use of the Interlock feature you will need to acquire the
appropriate connector and wire it to your device. The Interlock input only accepts
a 2.5 mm mono phono jack. This connector is readily available at most electronics
stores.
Figure 6 Remote Interlock Connector (not included)
4.9. Indicators
4.9.1. Power LED
The Power LED will be lit green when the power is on and dark when the power is off.
4.9.2. Status LED
The table below outlines the color of the Status LED and the meaning depending
on the mode. When the Status LED turns red, the device will shut down until the
user cycles the power. However, when the device is in Unprotected Mode, the
Status LED will still turn amber 15 seconds before an over temp condition and stay
amber when an over temperature condition occurs, but the device will not shut
down.
Mode
Shutter
Closed
Shutter
Open
Over Temp
Warning
Over
Temp
Max Freq
Exceeded
Blade
Jammed
Manual 
EMM23
Unprotected 4
LED is green Not applicable in that mode
LED is amber LED is off
LED is red
2External Modulation Mode
3LED will turn solid amber 15 seconds prior to shut down. It will no long turn on and off as shutter opens
and closes.
4LED will turn solid amber 15 seconds prior to when shut down would occur in protected mode.
However, in unprotected mode, unit will not shut down.

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Rev A, September 8,, 2016 Page 13
4.10. Timing Performance
Figure 7 Timing Driven by SLSLLG2 Shutter Controller
Time
(ms, Typ)
Time
(ms, Max) Definitions
I A 11 13
Delay from input pulse rising edge to initiation
of shutter opening.
A C 10 12 Rising edge to 100% open.
I C 21 25
Delay from input pulse rising edge to shutter
fully opening.
D E 15 17
Delay from fall of input pulse to initiation of
shutter fully closing.
E G 9 11 Falling edge to 100% closed.
D G 24 26
Delay from fall of input drive to shutter fully
closed.
Minimum Drive Pulse (MDP)
These measurements use the MDP, which is the minimum pulse to drive the minimum
open time (I D).
I D 25 26 Minimum pulse to drive minimum open time.
C E 19 21 Minimum exposure pulse; @ top of pulse.
B F 28 30 Minimum exposure pulse; @ 50% of pulse.
A G 35 37 Minimum exposure pulse; @ bottom of pulse.
5 V
0
Open
Close
External Modulation
Input Pulse
Shutter Response
IA
B
C
DE
F
G

Liquid Light Guide Adapter with Shutter Chapter 4: Setup and Operation
Page 14 CTN008800-D02
4.11. Typical Performance
The time it takes to open the shutter or close the shutter, IA and DE as shown in
Figure 7 on page 13, are constant characteristics of the device. The time delay for
both opening and closing is a result of the time it takes to energize the coils. The
net effect is the delay from the initiation of the starting pulse to the shutter
responding (IA) is typically 11 ms. Similarly, the closing time (DE) is typically 15
ms.
The mechanical rise time of the shutter is given as AC in Figure 7 on page 12. The
fall time is given as EG. The typical values for the rise and fall times respectively
are 12 ms and 9 ms.
Therefore, the total time it typically takes for the shutter to open would be IC or
21 ms. The total time it typically takes for the shutter to close would be DG or
24 ms. Depending on your application, some or all of these values are important
to note.

Liquid Light Guide Adapter with Shutter Chapter 5: Specifications
Rev A, September 8,, 2016 Page 15
Chapter 5 Specifications
5.1. Optical Specifications
Specification
V
alue
Lens ACL5040U-A
Glass Type B270 Optical Crown Glass
Wavelength Range 350 – 700 nm
Effective Focal Length 40 mm
Back Focal Length 26 mm
Clear Aperture Ø45 mm
Typical Coupling Efficiency
(Including Attenuation of
LLG)
With SLS401 >30% with 3 mm LLG
>40% with 5 mm LLG
With SLS301 >20% with 3 mm LLG
>30% with 5 mm LLG

Liquid Light Guide Adapter with Shutter Chapter 5: Specifications
Page 16 CTN008800-D02
5.2. Shutter Specifications
All values at 25 °C unless otherwise noted.
Specification Value
Electrical Specifications
External Modulation Input Voltage, TTL Low: 0 – 0.8 VDC
High: 2.0 – 5.0 VDC
Coil Resistance 8.5 ± 2.5%
Shutter Drive Voltage57.0 VDC Typ, 8.0 VDC Max
Controller Drive Type PWM @ 20 KHz
Controller Shutter Drive Starting Pulse 18 ms
Controller Shutter Duty Cycle (DC) De-bounce 18 ms, 85%/Hold 45%
Performance Specifications
Operating Temperature 15 – 40 °C
Operating Freq. Over Operating Temp Range 0 – 15 Hz
Min Exposure Pulse628 ms Typ, 30 ms Max
Exposure Accuracy76 ± 0.5 ms
Exposure Repeatability Jitter8<4 ms
Jitter Rising Edge ≤10 Hz 1.7 ms Typ, 4 ms Max
Jitter Falling Edge ≤10 Hz 1.7 ms Typ, 4 ms Max
Jitter Rising Edge 11 – 15 Hz 4 ms Typ, 8 ms Max
Jitter Falling Edge 11 – 15 Hz 4 ms Typ, 8 ms Max
Rise Time 10 ms Typ, 12 ms Max
Fall Time 9 ms Typ, 11 ms Max
Protected Mode
Max Operating Freq. Continuous 10 Hz
Max Operating Freq., 30 min 11 – 13 Hz
Max Operating Freq., 10 min 14 – 15 Hz
Unprotected Mode
Max Operating Freq. Continuous 15 Hz
Overheat protection disabled
Mechanical Specifications
Aperture 1"
Weight Boxed 2.7 lbs
Blade Number 5
Blade Finish Polished Stainless Steel
Electrical Specifications
AC Line Voltage, Frequency 100 – 240, 47 – 63 Hz
AC Current 0.4 A
5Maximum voltage defined as; 18 ms pulse followed by 20KHz -De-Bounce 85% (DC) -Hold 45% (DC).
6Measured using the minimum drive pulse (MDP) of 25 ms measured at 50% open.
7Referenced to the external input drive pulse over a range of 3 to 10 Hz.
8Measured 50 times repeatedly over a range of 3 to 10 Hz.

Liquid Light Guide Adapter with Shutter Chapter 6: Interface Connector
Rev A, September 8,, 2016 Page 17
Chapter 6 Interface Connector
The interface connector on the SLSLLG2 is a 4-pin Mini-DIN shielded female
connector that accepts the 4 pin Min-Din male connector.
The pin descriptions are as follows:
Pin Description
1 Shutter Detect
2 Modulation +
3 +5 VDC
4 Modulation -
SHIELD GND
Figure 8 Pin-Out SLSLLG2 – 4 pin Mini-din Jack
Figure 9 Pin-out SLSLLG2 – 4 pin Mini-din Connector
2
4
1
3
1
3
2
4