BENTHAM TLS120Xe User manual

BENTHAM | TBD
Light. Measure. Excellence 3
t
Light. Measurement. Excellence.
Product Guide
TL 120Xe
High Power Tuneable
Light ource
(280-1100nm)

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TL 120Xe Product Guide v1.
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Light. Measurement. Excellence.
Guide Overview
This product guide is intended to provide functional, operational,
installation and safety information for the TL 120Xe tuneable light source.
This guide is divided into four sections:
 Regulatory & warranty information- includes pertinent regulatory
and commercial information.
 TLS120Xe description- introduces the design and functionality of this
tuneable light source.
 Operating the TLS120Xe- provides information and procedures on
how to setup and use the unit.
 Ser icing and re-configuration- includes information on lamp and
slit changing.
afety Notices
In normal use, the TL 120Xe poses a potential optical radiation hazard.
Non-coherent optical radiation (280 nm-1100 nm)
emitted from the output aperture.
WARNING. Possibly hazardous UV and visible optical
radiation emitted from this product. Avoid eye and skin
exposure to unshielded product. Do not look at
operating lamp. Eye injury may result.
For further information please read section 3.1 and
consult the TL 120Xe photobiological safety report.
In order to change the lamp of the TL 120Xe, the user or service
personnel must open the top access panel. In so doing, one is exposed to
additional risks.
Please ensure all service personnel review sections
4.1.1 and 4.2.1 before servicing or re-configuring the
TL 120Xe.
Do not use this equipment other than in the manner
specified in section 1.1 of this product guide. If the
equipment is used in a manner other than specified by
the manufacturer, safety protections may be impaired.
Do not to position equipment in a manner which may
prevent access to power disconnection.
Clean outside of product only with damp cloth when
unit powered-off and disconnected from the mains
supply.
Always keep liquids away from the TL 120Xe.

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Do not subject the TL 120Xe to violent physical shock.
This may cause the lamp to explode.
Revision
This section records the document revision details.
Date
Version
Notes
January 2020
1.1
Fir
st release
June 2020
1.2
U
pdate safety information
January 2021
1.3
Updated safety warning

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Contents
Guide Overview ...................................................................... 2
afety Notice ................................................................................... 2
Revision .......................................................................................... 3
Regulatory & Warranty Information ......................................... 6
1.1 Intended Use ............................................................................. 6
1.2 Regulatory Compliance ............................................................... 6
1.3 Contact Bentham ....................................................................... 6
1.4 Notice for clients in the EU .......................................................... 6
1.5 Guarantee .................................................................................. 7
TL 120Xe Description ............................................................. 8
2.1 Features Overview...................................................................... 8
2.2 Optical Design Overview ............................................................. 9
2.3 Description of Features ............................................................. 10
2.4 Installation Requirements ......................................................... 11
2.5 hipped Components ................................................................ 11
2.6 Chassis Labels .......................................................................... 12
2.7 Consumables ........................................................................... 12
2.8 pecifications ........................................................................... 13
Operating the TL 120Xe ....................................................... 15
3.1 afety Notices .......................................................................... 15
3.2 etting up the TL 120Xe .......................................................... 16
3.3 Powering on/ off the TL 120Xe ................................................. 17
3.4 Manual Control ......................................................................... 18
3.5 Computer Control ..................................................................... 18
ervicing and Re-configuration .............................................. 20
.

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4.1 Changing slits .......................................................................... 20
4.1.1 afety Notices ....................................................................... 20
4.1.2 Overview .............................................................................. 20
4.1.3 Procedure ............................................................................. 20
4.2.1 afety Notices ....................................................................... 23
4.2.2 Overview .............................................................................. 24
4.2.3 Lamp Replacement ................................................................ 24
4.2.4 Optimising Lamp Position ....................................................... 27

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Regulatory & Warranty Information
1.1 Intended Use
The TL 120Xe is an ultraviolet- visible- near infrared monochromatic
tuneable light source (280 nm – 1100 nm) intended for laboratory (indoor)
use in the physical and life sciences.
1.2 Regulatory Compliance
CE Marking
*To be included in final version*
1.3 Contact Bentham
Bentham Instruments Limited
2, Boulton Road,
Reading, Berkshire,
RG2 0NH,
UK
www.bentham.co.uk
For technical support:
http://support.bentham.co.uk/
T:[phone] (option 2)
For sales support:
[e-mail]
T:[phone] (option 1)
1.4 Notice for clients in the EU
This product is designated for separate collection at an
appropriate collection point in accordance with
European Community Directive 2012/19/EU.
Do not dispose of as household waste. Bentham are
fully WEEE compliant, our registration number is
WEE/CB0003ZR.
hould you need to dispose of our equipment please
telephone [phone]/4356, quoting
account number 135419
1
.

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1.5 Guarantee
Bentham Instruments warrants each instrument to be free of defects in
material and workmanship for a period of one year after shipment to the
original purchaser. Liability under this warranty is limited to repairing or
adjusting any instrument returned to the factory for that purpose. The
warranty of this instrument is void if the instrument has been modified
other than in accordance with written instructions from Bentham, or if
defect or failure is judged by Bentham to be caused by abnormal
conditions of operation, storage or transportation.
This warranty is subject to verification by Bentham, that a defect or failure
exists, and to compliance by the original purchaser with the following
instructions.
Before returning the instrument, notify Bentham with full details of the
problem, including model number and serial number of the instrument
involved. After receiving the above information, Bentham will issue an RMA
reference number and provide shipping instructions.
After receipt of hipping instructions, ship the instrument “carriage paid” to
Bentham. Full liability for damage during shipment is borne by the
purchaser. It is recommended that instruments shipped to us be fully
insured and packed surrounded by at least two inches of shock-absorbing
material. pecific transit packaging as used in Monochromators etc. must
be installed.
Bentham reserves the right to make changes in design at any time without
incurring any obligation to install same on units previously purchased.
This warranty is expressly in lieu of all other obligations or liabilities on the
part of Bentham, and Bentham neither assumes, nor authorises any other
person to assume for it, any liability in connection with the sales of
Bentham’s products.
Nothing in this guarantee affects your statutory rights.

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TL 120Xe Description
2.1 Features Overview
A multitude of applications
The TL 120Xe easily fits into a
wide range of applications in
spectroscopy and
spectrophotometry to access the
optical properties of
components, materials and
photodetectors.
High optical power
Efficient coupling and optimised
operation of short arc xenon lamp
ensures high beam power.
Continuous tuning
A concave grating monochromator
provides narrow bandwidth and
high wavelength agility, giving you
the freedom to select the
wavelength you require.
Monitor source parameters
An OLED display reports
wavelength, bandwidth, burn time
and stability in real-time.
Monochromatic light
at your fingertips
Choose the wavelength you want,
with direct front panel control or
automation over U B.
Range of fibre output options
A range of fibre and light guides are
on offer to adapt to your
application.
2.

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2.2 Optical Design Overview
The TL 120Xe is a tuneable light source operating over the spectral range
280 nm to 1100 nm. It houses an ultra-quiet short-arc xenon light source,
starter and constant current power supply with a 120mm focal length
concave grating monochromator in a single 19” rack (4U) unit. With a single
mains power input, the TL 120Xe offers plug and play functionality, with
direct front panel control or automation over U B.
The arc of a short arc xenon lamp is placed at the primary focal point of an
AlMgF
2
coated ellipsoidal reflector. At the secondary focal point of the
ellipsoidal reflector is located the rectangular entrance slit of a concave
grating constant deviation monochromator. A four-position filter wheel is
located behind the entrance slit, fitted with a shutter and two long pass
filters (O 400 and O 700) to supress diffraction orders other than the first
diffraction order.
A 1200 g/mm, ruled concave diffraction grating (380 nm blaze wavelength) is
mounted on an on-axis rotating turret driven by stepper motor having a drive
resolution of 0.5 arcsec per step.
The grating spectrally disperses the broadband optical input light and re-
focusses the dispersed light onto a rectangular exit slit, transmitting a narrow
band of wavelengths defined by the largest width of the entrance and exit
slits. Rotating the diffraction grating allows selection of the transmitted
wavelength over the range 280nm to 1100nm.
A pair of biconvex lenses focus light transmitted through the slit onto the
optical fibre/ liquid light guide of choice. An iris diaphragm allows control of
the level of illumination.
The xenon lamp should be changed if it has failed or if the power output has
fallen below the recommended level of 87.5% of the initial output (nominally
2000 hours). The TL 120Xe includes a monitor photodiode and amplifier to
enable output monitoring during lamp alignment.
Please read section 1.6 for recommended replacement
lamps and section 3.2 for the lamp replacement
procedure.
The bandwidth of the TL 120Xe is defined by the width of the
entrance and exit slits as shown in table 1.
Please read section 3.1 for the procedure to change slits.
.

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Grating line density (g/mm) 1200
Reciprocal Dispersion (nm/mm) 2.70
Slit Width (mm) Bandwidth (nm)
0.74 5
1.48 10
2.96 20
5.92 40
Table 1: Bandwidth of TLS120Xe
2.3 Description of Features
TL 120Xe Iris diaphragm
Main switch Lamp power switch
Wavelength selection switch Monitor port
Display U B 2.0 port
Output port
Figure 1: TLS120Xe features

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2.4 Installation Requirements
Table 2:TLS120Xe installation requirements
2.5 hipped Components
Component Part no Description
Main unit TL 120Xe High Power Tuneable Light
ource
Lamps 19719 100W short-arc xenon lamp
19583 75W short-arc xenon lamp
lit A-F P(0.74) lit pair (5nm bandwidth)
A-F P(1.48) lit pair (10nm bandwidth)
A-F P(2.96) lit pair (20nm bandwidth)
A-F P(5.92) lit pair (40nm bandwidth)
Fibres MA-1500-1000 &
adaptor 45937
MA fibre,1m long. 1.5mm
dia.
FIBRE-UV-4-4-1000 &
adaptors 45936 & 46888
UV fused silica fibre
bundle,1m long. 4mm dia.
LLG-3-1000 & adaptors
45935 & 46915
Liquid light guide, 1m long.
3mm dia.
Cables - Mains power cord
CAB-U B U B 2.0 cable
Table 3: TLS120Xe shipped omponents
O erall dimensions
(mm)
300L x 462W x
184H
Weight (kg) 8.8
Power supply 100-240V AC,
50-60 Hz
Unit orientation Horizontal
mount only
Computer interface U B 2.0
Electrical
consumption
300 W

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2.6 Chassis Labels
Table 4: Chassis labels
2.7 Consumables
Part no Description
19719 100W short-arc xenon lamp, nominal 500 hours
lifetime
19583 75W short-arc xenon lamp, nominal 2000 hours
lifetime
Table 5: TLS120Xe onsumables
Label Panel Description
Front
Optical radiation hazard label alerting to
potential hazards due to non-coherent
optical radiation (280 nm-1100 nm)
emitted from the output aperture.
Rear afety label stating the AC voltage and
current ratings of the TL 120Xe.
Rear
Environmental label indicating that the
TL 120Xe can be disposed of following
European Community Directive
2012/19/EU regulations.
ides
(under
cover)
Removal not intended during normal use
.
ervicing to be undertaken by qualified
personnel having read the appropriate
sections of this document.
Rear
Manufacturing information including
address, part and serial number, date
manufactured and regulatory
compliance.

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2.8 pecifications
Light ource
Lamp type hort-arc OFR xenon lamp
Operating Current Constant current
Coupling Ellipsoidal reflector, 60mm diameter
75W Lamp Option
Operating Current 5.4A
Nominal lamp power and voltage 75W, 15V
Nominal lifetime 2000 hours
100W Lamp Option
Lamp type 7.2A
Operating Current 100W, 14V
Nominal lamp power and voltage 500 hours
Optical Layout
Configuration Constant Deviation Angle
Focal length 120mm effective
Opto-Mechanical
Grating mount ingle grating on-axis turret
Grating type Concave blazed holographic
Grating line density 1200
Nominal blaze wavelength 380nm
lit type Fixed lit
Drive type tepper motor
Wavelength accuracy ±0.1nm.
Drive resolution 0.5 arcsec per step
Maximum drive speed 115° per sec
witching speed <10ms for 100nm

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Optical Performance
Wavelength range 280nm – 1100nm
Wavelength step 0.0035nm
Bandwidth at FWHM with
0.74mm slit 5nm
Bandwidth at FWHM with
1.48m280m slit 10nm
Bandwidth at FWHM with
2.96mm slit 20nm
Bandwidth at FWHM with
5.92mm slit 40nm
Control
Interface U B2.0
oftware control BenWin+ spectral acquisition application, CPI
Electrical/ Mechanical
Overall dimensions 300L x 460W x 185H (mm)
Weight 8.8 kg
Power supply 100-240V AC 50-60 Hz
Line fuse 5A slow blow (rated 250 VAC)
Mains supply voltage fluctuations Up to ±10 % of the nominal voltage
Transient voltages Up to overvoltage category 2
Orientation Horizontal only
Environmental
Operating temperature range 5-40°C
Operating humidity range
M aximum relative humidity 80 % for
temperatures up to 31 °C decreasing
linearly to 50 % relative humidity at 40 °C
Altitude 2000m above sea level
Environment pollution
category
Category 2
Table 6: TLS120Xe spe ifi ations

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Operating the TL 120Xe
3.1 afety Notices
The optical radiation emitted from the aperture of the TL 120Xe poses a
potential optical radiation hazard.
Optical radiation hazard: Non-coherent optical radiation
(280 nm-1100 nm) emitted from the output aperture.
Optical Radiation Safety Information
Hazard
Designation
Warning User Information
Actinic UV
WAR I G
UV emitted from this
product.
Avoid eye and skin exposure to
unshielded product
ear UV
OTICE
UV emitted from this
product.
Minimise exposure to eyes.
Use appropriate shielding
Blue light
CAUTIO
Possibly hazardous optical
radiation emitted from this
product.
Do not stare at operating lamp.
May be harmful to the eye.
Retinal
thermal - -
Infrared eye
OTICE
IR emitted from this
product.
Use appropriate shielding or
eye protection.
Table 7: TLS120Xe opti al radiation safety
information
In deploying the TL 120Xe in an experimental setup, safety measures should
be implemented in the following order:
1. Engineering controls (e.g., filters, shielding, etc)
2. Administrative measures (such as warnings and labels)
3. Personal protective equipment (eye and skin protection)
For further information please read the TL 120Xe
photobiological safety report for further guidance on the
risk assessment given the various configuration
parameters that may impact the accessible emission.
3.

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3.2 etting up the TL 120Xe
The TL 120Xe is designed to be bench mounted. Locate the TL 120Xe on
a stable surface with enough space around the unit to ensure air flow.
The lamp in the TL 120Xe can be operated horizontally or
vertically with the anode above the cathode. Running the
lamp with the cathode in the uppermost position will
permanently damage the lamp and lead to failure within a
few hours.
Ensure that the TL 120Xe is locate in such a manner to
ensure that the fans to the rear of the unit are not
blocked.
Only use if connected to a safety earth, do not connect
using two-pin only connectors. Only use a cable rated for
the product.
Ensure that the TL 120Xe is located on a stable surface.
Allow to reach room temperature before using to avoid
condensation.
Figure 2: TLS120Xe with fibre opti atta hed
The TL 120Xe is supplied with an output port adaptor according to the
output fibre purchased with the TL 120Xe, attached to the fibre as
described in table 8.

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Table 8: TLS120Xe output fibre adaptor
The adaptor is held at the TL 120Xe output port using a radial M3 grub
screw indicated in figure 4.
The TL 120Xe is now ready to use.
Figure 3: Lo ation of atta hment s rew to fibre adaptor
3.3 Powering on/ off the TL 120Xe
Upon powering on the TL 120Xe, the user will be presented with the
following splash screen showing the product ID, serial number and firmware
version.
Figure 4: Splash s reen at initial boot of TLS120Xe
Fibre Adaptor Connection Drawing
MA-1500-1000 45937 MA bulkhead
FIBRE-UV-4-4-
1000
45936 Radial grub screw
(M3)
LLG-3-1000 45935 Radial grub screw
(M3)

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Upon finishing the boot sequence, the xenon lamp will automatically be
struck by default. The “output” LED should turn from red to green to indicate
that the lamp has been ignited. If the unit has not been set to ignite the
lamp at start up, then pressing the output button will turn the lamp on.
The display will indicate the current wavelength, calculated bandwidth (given
the slits installed), the burn time of the lamp and its stability.
Figure 5: Display during normal operation
It is recommended to give the unit a ten-minute warm-up time to allow the
lamp output to stabilise.
To power off the TL 120Xe, switch off directly from the left-hand power on
switch.
3.4 Manual Control
Having powered on the TL 120Xe, the user can directly use the wavelength
rotary switch to select wavelength with a resolution of 1nm.
Figure 6: Manual ontrol of the TLS120Xe
The output button can be depressed momentarily to open/ close the
shutter as required.
3.5 Computer Control
The TL 120Xe wavelength selection can be fully controlled, with a
wavelength resolution of 0.1nm, over the U B 2.0 interface using the CPI
protocol.

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The U B IDs of the TL 120Xe are VID 04D8, PID 1705.
Upon finishing the boot up sequence, the user can control the unit remotely.
In the following example the TL 120Xe is set to remote mode, the target
wavelength is set to 500nm, the target filter set to the appropriate filter for
500nm and the monochromator moved to the target wavelength:
: Y T:REM
:MONO 500
:MONO:FILT:WAVE 500
:MONO:MOVE
Please see the TL 120Xe communications manual for
further information.
To revert to local mode after computer control, hold the output button for 3
seconds.
Figure 7: Display shown when initiating remote mode

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ervicing and Re-configuration
4.1 Changing slits
4.1.1 afety Notices
Power off: witch off and disconnect the TL 120Xe
from the mains before proceeding to change slits.
Mechanical Hazard: Ensure unit is powered off before
accessing.
Burn hazard: Internal surfaces get hot during use,
allow to cool before opening
Notice: Do not touch the diffraction grating of the
TL 120Xe. If gratings inadvertently touched, do not
attempt to clean, only further damage can result.
Notice: To avoid contamination of the inside of the
unit, perform this operation in a dust-free
environment.
4.1.2 Overview
The bandwidth of the TL 120Xe is set by a pair of rectangular slits as
detailed in table1, requiring access to the monochromator compartment of
the TL 120Xe.
The side panels of the TL 120Xe should be removed to allow removal of the
top cover and gain access to the slits.
Tools required: Flat-bladed screwdriver to remove
side panels. Torx T20 screwdriver to remove lid. Pliers
to remove installed slits
4.1.3 Procedure
Ensure you read section 3.1.1 before following the
procedure below.
1
Power off and disconnect the TL 120Xe from the mains power
supply.
2
Insert a flat-bladed screwdriver into the two notches of each side
panel to remove that panel.
4.