Global Laser LDM127 User manual

Thank you for purchasing the LDM127. This emits a green, red and infrared Dot. If you have any
problems or require help when using the LDM127 please call us on [phone] or
contact your local representative.
The LDM127 laser module features a 19 by 34mm oblong housing which allows the user to
reference the laser to a mounting surface using either the front or bottom surface. Both of
these surfaces have a choice of four mounting holes which can be used for securing the laser
or for alignment and the optical axis is aligned to the housing. The at surfaces allow superior
heat sinking of the laser, compared to conventional cylindrical laser modules.
Available in wavelengths of 520, 635, 650, 670, 780 & 850nm with power up to 5mW as standard.
It requires an operating voltage of 5Vdc (520nm requires 10Vdc) and features an isolated body.
As a further enhancement the LDM127 can be specied with a TTL modulation input with a
bandwidth up to 100KHz (red and IR models only).
A choice of two collimating lens are oered. The “G” model use a glass lens with an elliptical
output beam, the “P” model use a plastic lens which
produces a circular output beam with a lower beam
divergence. Both models have user adjustable
focus.adjustable focus.
Product Overview
LDM127 Userguide

Product Operation
Green Models Red Models
Red Lead +10 Vdc ±5% +3.5 to 5 Vdc
Black Lead 0 Vdc 0 Vdc
Green Models Red Models
Red Lead +10 Vdc ±5% +3.5 to 5 Vdc
Black Lead 0 Vdc 0 Vdc
Yellow Lead TTL Input (Connect to supply if using is CW Mode)
The LDM127 is available in two variants, a CW model tted with two input wires or a model with a
TTL enable which is tted with three wires.
A. CW Model
To operate laser in CW mode the Red & Black leads should be connected to the following:
B: LDM127 with TTL Modulation
A common requirement for applications which use photo detectors, cameras and other non-visual
sensing is the ability to rapidly switch the laser output ON and OFF. Simply applying and removing
the supply voltage is rarely satisfactory and in certain cases can result in diode failure. This is because
laser diodes are very sensitive to voltage spikes and surges that are often the result of uncontrolled
supply switching.
To overcome this limitation the LDM127 can be installed with a third input wire that enables reliable
and predictable laser TTL modulation. A logic LOW level turns the output completely OFF. However,
applying logic HIGH turns the laser ON after a control input delay. This sets the maximum rate at
which the module can switch fully ON and OFF.
To operate the laser connect the input wires in the below conguration:
Focus Adjustment
The focus of the LDM127 can adjusted by one of two method depending on model.
If you have an LDM127G Model (see drawing A) follow the method below:
1. Insert focus key (see drawing C) into laser barrel and align with focus control groves.
2. Turn the focus key until desired focus is achieved.
If you have an LDM127P Model (see drawing B) follow the method below.
1. Taking care not to touch the lens itself, grip the forward section of the laser.
2. Turn until the beam is the desired size.

Cleaning The Optics
If the laser pattern becomes fuzzy or unclear, please check the following:
1. Check the laser is in focus.
2. Verify the optical lens is clean, if the area has been contaminated please remove dirt with
dry air.
Safety & Classication
These modules are intended for incorporation into customer equipment. They are classied
in accordance with IEC60825-1: 2014, which should be consulted prior to designing or using
any laser product. The following labels are supplied for attachment to the customer’s
equipment, but responsibility for compliance with the standard remains with the user.
Mounting
To mount the LDM127 please follow the below instructions :
1. Position the LDM127 at the desired location on your at mounting surface.
2. Mark on the surface the position of the module.
3. Remove the LDM127 from the surface.
4. Drill and tap M3 mounting holes in the mounting surface ensuring their centres are 16mm apart.
5. Secure the LDM127 to the mounting surface using 2 x M3 cap head screws.
Class 2 Laser Label
www.globallasertech.com
IEC 60825-1:2014
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
<1mW CW 400-695nm
Product Description & Name Product Code Serial Number
Product Description & Name
Product Code
Serial Number
Class 3R Laser Label
www.globallasertech.com
IEC 60825-1:2014
LASER RADIATION
AVOID DIRECT EYE EXPOSURE
CLASS 3R LASER PRODUCT
<5mW CW 400-695nm
Product Description & Name Product Code Serial Number
Product Description & Name
Product Code
Serial Number
Class 3B IR Laser Label
www.globallasertech.com
IEC 60825-1:2014
INVISIBLE LASER RADIATION
AVOID EXPOSURE TO BEAM
CLASS 3B LASER PRODUCT
<500mW CW 700-980nm
Product Description & Name Product Code Serial Number
Product Description & Name
Product Code
Serial Number
Class 3B Laser Label
www.globallasertech.com
IEC 60825-1:2014
LASER RADIATION
AVOID EXPOSURE TO BEAM
CLASS 3B LASER PRODUCT
<500mW CW 400-695nm
Product Description & Name Product Code Serial Number
Product Description & Name
Product Code
Serial Number

Diagrams
C) Focus Key
30.00
10.00
0.80
Drawings are not to scale.
A) LDM127 with G Lens Outline
34.003.00
Ø10.70
Ø10.75
10.00 20.00
4 Holes Tapped M3
12.50
3.25
19.00
19.00
3.25
12.50
4 Holes Tapped M3
9.50
9.50
215
34.00
Ø11.00
Ø10.95
20.0010.00
4 Holes Tapped M3
3.0010.00
Focus
Adjustable
Dimension
19.00
4 Holes Tapped M3
12.503.25
12.50 3.25 19.00
9.50
9.50
215
B) LDM127 with P Lens Outline
25.00
4.5016.00
17.00
34.003.00
Ø10.70
Ø10.75
2 Holes Counterbored to Suit
M3 Cap Head Screws
7.00
14.00
12.50
215
17.00
25.00
4.5016.00
34.00
Ø11.00
Ø10.95
Focus
Adjustable
Dimension 10.00 3.00
2 Holes Counterbored to Suit
M3 Cap Head Screws
7.00
14.00
12.50
215
34.003.00
Ø10.70
Ø10.75
10.00 20.00
4 Holes Tapped M3
12.503.25
19.00
19.00
3.2512.50
4 Holes Tapped M3
9.50
9.50
215
34.00
Ø11.00
Ø10.95
20.0010.00
4 Holes Tapped M3
3.00
10.00
Focus
Adjustable
Dimension
19.00
4 Holes Tapped M3
12.50
3.25
12.50 3.25 19.00
9.50
9.50
215

9090-02-144 Rev 2 01/05/2018
T: [phone]
F:[phone]
E: [e-mail]
www.globallasertech.com
Global Laser Ltd
Unit 9-10
Roseheyworth Industrial Park
Abertillery. Gwent NP13 1SP UK
ISO9001 Certied
Please Note: Global Laser reserve the right to change
descriptions and specications without notice.
Notes