OPTOGAMA MRO User manual

MANUAL v3.3

MRO

MOTORISED ROTATOR

KEY for DISCOVERIES

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

MRO

Motorised Rotator

Congratulations on your purchase of the motorised rotator

from Optogama, UAB.

***

October 2022

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].

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.

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)

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

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)

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.

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

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.

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

Table of contents

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