Coherent Solutions DopplerPXIe User manual

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Copyright © 2018 Coherent Solutions Ltd. All rights reserved. No part of this publication may be reproduced,
stored in a retrieval system or transmitted in any form, be it electronically, mechanically, or by any other
means such as photocopying, recording or otherwise, without the prior written permission of Coherent
Solutions Ltd. (Coherent Solutions).
Information provided by Coherent Solutions is believed to be accurate and reliable.
However, no responsibility is assumed by Coherent Solutions for its use nor for any infringements of patents or
other rights of third parties that may result from its use. No license is granted by implication or otherwise
under any patent rights of Coherent Solutions.
The information contained in this publication is subject to change without notice.
Trademarks
Coherent Solutions’ trademarks have been identified as such. However, the presence or absence of such
identification does not affect the legal status of any trademark.
Units of Measurement
Units of measurement in this publication conform to SI standards and practices.
Version Number: V1.1

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Contents
1Conventions ............................................................................................................1
2Safety Information...................................................................................................2
3Introducing the DopplerPXIe –Modular Variable Optical Attenuator........................3
3.1 Overview & Features.............................................................................................................................3
4Connecting Optical Output.......................................................................................5
4.1 Cleaning and Connecting Optical Fibers................................................................................................5
5CSL Server Installation .............................................................................................6
5.1 CSL Driver Installation ...........................................................................................................................6
5.2 CSL Server Installation.........................................................................................................................10
6Handling the DopplerPXIe Module......................................................................... 18
6.1 DopplerPXIe Module Installation ........................................................................................................18
6.2 DopplerPXIe Module Uninstallation....................................................................................................20
7Programming Guide............................................................................................... 21
7.1 Programming Conventions..................................................................................................................21
7.2 Specific Command Summary ..............................................................................................................22
7.3 Specific Command Descriptions..........................................................................................................22
7.3.1 Slot Commands...............................................................................................................................22
7.3.2 Configuration Commands...............................................................................................................23
8Maintenance ......................................................................................................... 28
9Technical Support.................................................................................................. 30
9.1 Contacting the Technical Support Group............................................................................................30
9.2 Transportation ....................................................................................................................................30
10 Warranty............................................................................................................... 31
10.1 General Information............................................................................................................................31
10.2 Liability................................................................................................................................................31
10.3 Exclusions............................................................................................................................................31
10.4 Certification.........................................................................................................................................32
10.5 Service and Repairs ............................................................................................................................. 32

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1Conventions
Before using the instrument described in this manual, you should understand the following
conventions:
WARNING
Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury. Do not proceed unless you understand and
meet the required conditions.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury. Do not proceed unless you understand and
meet the required conditions.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result
in component damage. Do not proceed unless you understand and meet
the required conditions.
IMPORTANT
Refers to information about this product you should not overlook.

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2Safety Information
WARNING
Do not install or terminate fibers while a light source is active. Care
must be taken to ensure that the instrument has been turned OFF
before inspecting the end face(s) of the instrument, or any optical
patch cords connected to this instrument. Never look directly into a live
fiber and ensure that your eyes are protected at all times.
The use of controls, adjustments and procedures other than those
specified herein may result in exposure to hazardous situations or
impair the protection provided by this unit.
CAUTION
The DopplerPXIe modules are sensitive to electrostatic discharge (ESD).
Please be sure to store the modules that are not installed in protective
electrostatic packaging.
IMPORTANT
For electromagnetic compatibility, this instrument is a Class A product.
It is intended for use in an industrial environment. There may be
potential difficulties in ensuring electromagnetic compatibility in other
environments, due to conducted as well as radiated disturbances.
When you see the symbol on your unit, make sure that you refer
to the instructions provided in your user documentation. Ensure that
you understand and meet the required conditions before using your
product.

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3Introducing the DopplerPXIe –Modular Photonic Doppler Velocimetry
The DopplerPXIe combines the critical optical components for PDV measurements in a single slot
PXIe module to enable compact, inexpensive and robust Photonic Doppler
velocimetry measurement.
3.1 Overview & Features
1
Fastening screw
2
Status LEDs
3a
Optical Probe Input/Output port
3b
Optical Target Input port
3c
Optical Reference Input port
3d
Optical Signal Output port
4
Optical Connector Information
5
Fastening clip
6
PXIe Headers

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3.2 Functional Diagram
Two lasers are connected to the Target Input port and Reference Input ports respectively. The
Target laser passes through a circulator and exits the Probe port. This beam will interact with the
DUT (target) and be reflected into the Probe Port.
The input into the probe port will pass through the circulator and be directed to the optical
attenuator and inline power meter.
The Reference laser passes though an optical attenuator and inline power meter.
The Reference laser and the Probe input are coupled to the Output port through a 10%:90% coupler
respectively.
Through this configuration, independent control of the Probe power and the Reference power is
achieved. The Power Meter is referenced to the output port, so it takes all internal losses of the
optical coupler into consideration when reporting the optical power of the probe and reference.

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4Connecting Optical Output
IMPORTANT
To ensure maximum power and to avoid erroneous readings always inspect
fiber ends and make sure that they are clean as explained below before
inserting them into the port. Coherent Solutions is not responsible for
damage or errors caused by bad fiber cleaning or handling.
CAUTION
The type of optical connectors on the DopplerPXIe module can be found
printed on the front plate of the module and in the separate Spec sheet
provided. Joining mismatched connectors will damage the ferrules.
4.1 Cleaning and Connecting Optical Fibers
To connect the fiber-optic cable to the port:
1. Inspect the fiber using a fiber inspection microscope. If the fiber is clean, proceed to connecting
it to the port. If the fiber is dirty, clean it as explained below.
2. Clean the fiber ends as follows:
2a. Gently wipe the fiber end with a lint-free swab dipped in isopropyl alcohol.
2b. Use compressed air to dry completely.
2c. Visually inspect the fiber end to ensure its cleanliness.
3. Carefully align the connector and port to prevent the fiber end from touching the outside of the
port or rubbing against other surfaces. If your connector features a key, ensure that it is fully
fitted into the port’s corresponding notch.
4. Push the connector in so that the fiber-optic cable is firmly in place, thus ensuring adequate
contact. If your connector features a screw sleeve, tighten the connector enough to firmly
maintain the fiber in place. Do not over tighten, as this will damage the fiber and the port.
Note: If your fiber-optic cable is not properly aligned and/or connected, you will notice heavy loss and
reflection.
Coherent Solutions uses good quality connectors in compliance with EIA-455-21A standards.
To keep connectors clean and in good condition, Coherent Solutions strongly recommends
inspecting them with a fiber inspection probe before connecting them. Failure to do so will result in
permanent damage to the connectors and degradation in measurements.

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5CSL Server Installation
IMPORTANT
The software requires installation on the PXIe Chassis. The CSLServer is
installed as a service to auto start when the chassis is powered on.
5.1 CSL Driver Installation
Windows 7
1. Locate installer setup.exe in the CSLDriverInstaller folder on the provided media.
2. Allow installation by clicking ‘Yes’ in the User Account Control prompt.
3. Proceed with the NI CSL Driver installation and accept Licence Agreements.

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