OPTOGAMA MRO User manual

!
MANUAL v3.3
MRO
MOTORISED ROTATOR
KEY for DISCOVERIES

Table of contents
Table of contents" #....................................................................................................................................2
1. Safety requirements" #...........................................................................................................................4
2. Operation principle" #.............................................................................................................................5
2.1.Features and advantages!..............................................................................................................................................5
3. Product description" #............................................................................................................................6
3.1.Optical specifications!....................................................................................................................................................6
3.2.Mechanical specifications!.............................................................................................................................................6
3.3.Electronic specifications!................................................................................................................................................6
3.4.Conditions!....................................................................................................................................................................6
3.5.Controller!......................................................................................................................................................................7
3.5.1.Interfaces, pinout!..................................................................................................................................................7
3.5.2.LEDs, Buttons functions!.......................................................................................................................................7
3.5.3.Mounting!..............................................................................................................................................................8
3.6.Voltage levels!................................................................................................................................................................8
3.7.What’s in the box?!........................................................................................................................................................8
4. Software" #.............................................................................................................................................8
4.1.Minimum Hardware requirements (recommended)!........................................................................................................8
4.2.System requirements!....................................................................................................................................................8
4.3.Supported client operating systems!..............................................................................................................................8
4.4.Installing the software!...................................................................................................................................................8
4.5.Using the software!......................................................................................................................................................10
4.5.1.Connection!............................................................................................................................................................10
4.5.2.Settings, calibration!................................................................................................................................................10
4.5.3.Main window!..........................................................................................................................................................11
4.6.Ethernet connection!...................................................................................................................................................12
4.6.1.About TCP/IP pMROocol!.......................................................................................................................................12
4.6.2.Client and Server Connection!.................................................................................................................................12
4.6.3.Ethernet configuration using MRO software!...........................................................................................................13
4.6.4.Ethernet connection using MRO software!..............................................................................................................13
4.6.5.Ethernet configuration using commands!................................................................................................................14
4.7.Updating the firmware!................................................................................................................................................15
4. Commands" #......................................................................................................................................16
4.1.Interface!.....................................................................................................................................................................16
4.2.Description!.................................................................................................................................................................16
5. Troubleshooting" #................................................................................................................................19
5.1.STATUS bits explanation!.............................................................................................................................................19
5.2.Serial communication example in Python!....................................................................................................................20
6. Technical information" #.......................................................................................................................21
6.1.MRO drawings!............................................................................................................................................................21
6.2.MRO controller drawing!..............................................................................................................................................22
6.3.Power supply!..............................................................................................................................................................23
6.4.RS232 cables!.............................................................................................................................................................24
2

MRO
Motorised Rotator
Congratulations on your purchase of the motorised rotator
from Optogama, UAB.
***
October 2022
Copyright UAB Optogama. All rights reserved.
No part of this manual may be reproduced, transmitted in
any form without the permission of Optogama.
Claims will not be accepted and warranty repair will not be
carried out in case of improper use, incorrect service and
maintenance not according to product instructions.
Warranty claim shall not be accepted if there are any signs
of:
•Non-authorised alteration
•Disassembling of the device
•Mechanical or any external damage
•If warranty term has expired
•Serial number of the product is missing
Symbols#
CAUTION!
Sections marked with this symbol indicate dangerous
situations that can result in damage to the device,
components connected to it or operator.
NOTE:
Sections marked with this symbol indicate important
information on rotator or about this manual.
Due to constant development of our products we reserve
the right to make changes in the production line without
further notice. Up-to-date information is available at our
website www.optogama.com. If there are any further
questions, please contact us.
Optogama is not liable for damage or injury resulting directly
or indirectly from use of this product for anything other than
its intended purpose.
The motorised rotator is intended for industrial and scientific
use only. If there are any other electrical devices connected
to or used in conjunction with the rotator, all legal regulations
and technical standards that are applied to those devices
must be observed as well.
For any technical assistance and consultation please
contact your local dealer or directly [email protected].
3

1. Safety requirements#
•All safety instructions must be followed.
•All rules and regulations concerning the safe operation of
lasers must be known and applied while installing and
operating motorised rotator.
•Even when wearing safety glasses avoid eye contact
with direct or scattered laser light while assembling,
installing and operating the device.
•The device should never be exposed to dirt, dust or
moisture.
•Before any operation make sure the device is installed
correctly and well adjusted and all cover stickers are
removed.
•Protective measures should be considered if necessary.
•Electrical safety requirements must be complied while
operating this device.
CAUTION! High laser output power may damage or destroy
optical elements.
CAUTION! The device is meant to be used with a
collimated beam. Users take full responsibility when using
the device with a highly converging beam.
CAUTION! Before increasing laser power make sure the
device is aligned and there is no beam cut. It may damage
optical elements.
4
INPUT
COVER STICKERS MUST $
BE REMOVED BEFORE USE
OUTPUT$
!
!

2. Operation principle#
MRO is a compact motorised rotator which is based on the
LPA platform. It comes with external controller (SMC) and a
wave-plate. There are two standard options:
• ZO L/2 wave-plate (zero-order half wave-plate). This
setup is used to shift polarisation direction of linearly
polarised light.
• ZO L/4 wave-plate (zero-order quarter wave-plate). This
setup is used to convert linearly polarised light into
circularly polarised and vice versa.
NOTE: Homing is required.
CAUTION! Before increasing laser power make sure the
device is aligned and there is no beam cut. It may damage
optical elements.
2.1. Features and advantages#
• Compact design#
• High resolution - 175543 µsteps in 360 deg rotation
• High accuracy - ±10 µsteps accuracy (± 0.02 deg)
• Clear aperture - 18 mm#
• Fast adjustment - less than 0.2 sec (0 to 45 deg)
5

3. Product description#
Rotator (MRO) is a compact motorised device for laser
polarisation control.
The MRO is produced in the UV, visible and NIR spectral
ranges, from 250 nm to 2000 nm.
All optical components of the MRO are made for high LIDT
and provide stable and reliable performance even using
them with high power lasers in industrial applications.
3.1. Optical specifications#
3.2. Mechanical specifications#
3.3. Electronic specifications#
3.4. Conditions#
Clear input aperture
ø18 mm
Clear output aperture
ø18 mm
LIDT coating
>10 [J/cm2] (10 ns @ 1064 nm)
Close to open time$
0 to 45 deg
< 0.2 sec
Resolution
175,543 µsteps in full rotation
21,943 µsteps in 45deg rotation
(0.002 deg, 7.2 arcsec, 0.035
mrad)
Accuracy
±10 µsteps
(±0.02 deg)
Motor
2 phase stepper motor
200 steps with 256 µstepping
Available coatings
A. Standard wavelenghts, nm
1550
780
355
1064
400
343
1030
532
266
800
515
257
MRO - rotator
Controller
Lenght
37.5 mm
125 mm
Width
36 mm
53 mm
Height
58 mm
31 mm
Interface options:
Terminal
Using commands described
in p. 12 “Commands”
Software
Using LPA software
Input voltage
DC 12 V
Transmission speed
up to 115,200 bits/s (RS-232)
full speed USB 2.0
Operating temperature
10 0C to 40 0C
Storage temperature
-15 0C to 50 0C
6

3.5. Controller#
3.5.1. Interfaces, pinout#
1. RS-232 (DB9), USB 2.0 type B, and power plug for DC
12 V (standard plug 5.5x2.1 mm).
Fig 3. Front view of MRO controller.
2. HD-15 connector (for rotator connection to controller).
Fig 4. Back view of MRO controller.
3.5.2. LEDs, Buttons functions#
#
Fig 5. Top view of MRO controller.
31 mm
125 mm
RS232 (DB9) Pinout
2 - D+ (RS-232: Tx)
3 - D- (RS-232: Rx)
5 - GND
53 mm
Both
Tap
-
Home
Hold 2 - 6 s
-
Calibrate !
MIN power
Hold 6 - 10 s
-
Turn off buttons
Hold >10 s
-
Ignore commands
Push
-increase power (rotate CW)
LEDs !
blinking
Push
-decrease power (rotate CCW)
-
-
1
2
3
4
+
+
1#
2#
3#
4
MRO connection!
HD-15
LED explanation
Connection
Green - Power ON
Homed
Green - Device is homed and ready to use
Status
Green blinking - Device is in motion
Error
Red - there is an error, please connect PC for
further troubloushooting
BUTTONS functions
CW MROation (+)
Push “+” button to rotate clock-wise
CCW MROation (-)
Push “-“ button to rotate counter clock-
wise
Home
(Tap)
Tap both “+” & “-“ buttons to home the
device
Calibrate / Reset
(Hold 2 to 6 s)
Hold both “+” & “-“ buttons from 2 to 6
seconds to define (calibrate) current
position as 0 deg or reset it.
“Homed” and “Status” LED’s will start
blinking when it is right time to release
buttons to calibrate the device
Button lock
(Hold 6 to 10 s)
Hold both “+” & “-“ buttons longer than 6
seconds to turn off buttons. You will be able
to turn buttons ON again only via MRO
software (Settings > Buttons ON) or using
command.
“Homed”, “Status” and “Error” LED’s will
start blinking when it is right time to release
buttons to lock them.
Ignore
(Hold more than 10s)
Hold both “+” & “-“ buttons longer than 10
seconds to ignore commands.
“Homed”, “Status” and “Error” LED’s will
stop blinking when it is right time to release
buttons to ignore commands.
7

3.5.3. Mounting#
MRO uses SMC controller which is suitable for standard
*DIN35 rail mounting. You simply attach DIN35 Rail adapter
with provided screws.
*(DIN35 rail mount is optional)
3.6.Voltage levels#
The RS-232 standard defines the voltage levels that
correspond to logical one and logical zero levels for the data
transmission and the control signal lines. Valid signals are
either in the range of +3 to +15 volts or the range −3 to −15
volts with respect to the "Common Ground" (GND) pin;
consequently, the range between −3 to +3 volts is not a
valid RS-232 level. For data transmission lines (TxD, RxD),
logic one is defined as a negative voltage, the signal
condition is called "mark". Logic zero is positive and the
signal condition is termed "space".
MRO operates on signal levels of ±5#V and can accept
signal levels of up to ±15 V. Because the voltage levels are
higher than logic levels typically used by integrated circuits,
special intervening driver circuits are required to translate
logic levels. These also protect the device's internal circuitry
from short circuits or transients that may appear on the
RS-232 interface and provide sufficient current to comply
with the slew rate requirements for data transmission.
3.7.What’s in the box?#
Standard kit includes:
1. Motorised rotator (MRO)
2. Controller (SMC)
3. Software (LPA)
4. Power supply DC 12V (GST60A12-P1J)
5. USB cable (1.5 m)
NOTE: Other accessories must be purchased separately.
4. Software#
4.1. Minimum Hardware
requirements (recommended)#
4.2. System requirements#
To install the application you must have administrator rights
on your computer.
To run MRO application Microsoft .NET 4.5.2 Framework or
later must be installed. The installer detects Microsoft .NET
Framework and installs it. Administrator privileges are
required for installation. Contact your network administrator
if you do not have administrator rights on the computer.
4.3. Supported client operating
systems#
•Windows Vista SP2
•Windows 7 SP1
•Windows 8
•Windows 8.1 (.NET included with OS)
•Windows 10 (.NET 4.6 included with OS)
•Windows Server 2008 SP2/R2
•Windows Server 2012 (.NET included with OS)
4.4.Installing the software#
1. Check and download the latest LPA software from the
flash drive which was sent with the device itself, website
(www.optogama.com, www.4lasers.com) or contact us
directly at [email protected].
2. Run the downloaded software installation file. Installation
window will appear, click “Next” to continue:
Top
Bottom
Processor
1 Ghz
RAM
512 Mb
Disk space
32-bit
4,5 Gb
64-bit
4,5 Gb
8

3. Select “Create a desktop shortcut” if it is necessary and
click “Next”:
Review setup information and proceed the installation. To
continue click “Install”:
4. Setup will finish the installation:
5. Press “Finish” to end the installation:
Connect the device and controller via HD-15 cable.
6. Connect the PC and controller via USB or RS232 cable.
7. Plug in power supply to controller and AC adaptor to wall
outlet.
8. The device will be detected and configured.
9. The device installation is complete.
9

4.5. Using the software#
CAUTION! Do not switch the laser ON if the device is not
adjusted properly, it may damage or destroy optical
elements.
Launch LPA program using LPA icon on the desktop.
4.5.1. Connection#
10. Device selector window will appear. Select COM port (to
which the rotator is connected) from the drop down
menu. Press “Connect” to connect the device or
“Rescan” if your device is not visible.
Select “Filter” when device is connected via USB cable.
All other COM ports will be hidden except our device.
NOTE: When connecting via RS232 cable “Filter” must
be deselected, otherwise device will not be visible.
NOTE: Rotator will be seen as MROxxx (for ex. MRO001)
4.5.2. Settings, calibration#
11. Using rotator for the first time the calibration is required.
The information window will appear:
12. For MRO calibration, move your mouse to the left side
of the window on a gear symbol from the sliding menu
and select “Settings”. Settings menu will appear:
13. To succeed calibration please follow calibration steps:
1.Choose device’s mode (rotator by default)
NOTE: Polariser is necessary for attenuator mode.
2. Set default settings
3. Home device
4. Find required position by rotating the waveplate (it
will be defined as 0 degree)
5. Set current position as 0 deg.
6. Choose alternative measurement units if
necessary (radians are by default)
7. Select procedure after each homing:
LPA
10