JGR OA1 User manual
OA1 Optical Attenuator
User Manual
OA1 User Manual
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All information contained herein is believed to be accurate and is subject to change without notice. No
responsibility is assumed for its use. © JGR Optics Inc., 2020. All rights reserved.
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TABLE OF CONTENTS
LIST OF FIGURES AND TABLES ................................................................................................................... v
COMPLIANCE ..............................................................................................................1
FDA-CDRH Compliance..............................................................................................................................1
CSA / IEC Compliance ................................................................................................................................1
CE Compliance...........................................................................................................................................1
GENERAL INFORMATION ............................................................................................2
OA1 Optical Attenuator Overview.............................................................................................................2
Applications...............................................................................................................................................2
Key Features..............................................................................................................................................2
Included Accessories .................................................................................................................................3
SAFETY INFORMATION ...............................................................................................4
Safety Markings on the Unit......................................................................................................................4
Classification..............................................................................................................................................4
Important Safety Information ...................................................................................................................5
Laser Hazards ............................................................................................................................................................... 5
Electrical Hazards......................................................................................................................................................... 5
GETTING STARTED......................................................................................................7
Initial Inspection........................................................................................................................................ 7
Operational Requirements........................................................................................................................7
Product Overview......................................................................................................................................8
OA1 Front Panel ........................................................................................................................................................... 8
OA1 Rear Panel ............................................................................................................................................................ 8
OPERATION...............................................................................................................10
Powering Up the Attenuator ...................................................................................................................10
Setting the Wavelength...........................................................................................................................10
Setting the Attenuation...........................................................................................................................11
Setting an Offset......................................................................................................................................12
Device Information and Settings .............................................................................................................13
OA1 WEBPAGE ..........................................................................................................14
Dashboard...............................................................................................................................................14
Settings....................................................................................................................................................15
Network Settings........................................................................................................................................................ 15
Upgrade...................................................................................................................................................................... 16
Help.........................................................................................................................................................17
About.......................................................................................................................................................18
PROGRAMMING GUIDE.............................................................................................19
General Information................................................................................................................................19
Step-by-step Guide..................................................................................................................................19
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Note.........................................................................................................................................................20
Commands Lists.......................................................................................................................................20
MAINTENANCE..........................................................................................................23
Cleaning the Unit.....................................................................................................................................23
Cleaning the Output................................................................................................................................23
Cleaning Jumper Connectors...................................................................................................................25
STORAGE AND SHIPPING .........................................................................................26
Returning Instruments to JGR Optics ......................................................................................................26
Contact Information................................................................................................................................26
SPECIFICATIONS ......................................................................................................27
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LIST OF FIGURES AND TABLES
Figure 1: OA1 Optical Attenuator .................................................................................................................2
Figure 2: Front view of the OA1 Optical Attenuator.....................................................................................8
Figure 3: Rear view of an OA1.......................................................................................................................9
Figure 4: Front panel operation –setting the wavelength.........................................................................10
Figure 5: Front panel operation –wavelength flyout menu.......................................................................11
Figure 6: Front panel operation –setting the attenuation.........................................................................11
Figure 7: Front panel operation –attenuation flyout menu ......................................................................12
Figure 8: Front panel operation –setting an offset....................................................................................12
Figure 9: OA1 Setup page............................................................................................................................13
Figure 10: OA1 webpage –Dashboard tab.................................................................................................14
Figure 11: OA1 webpage –Network Settings tab.......................................................................................15
Figure 12: OA1 webpage –Upgrade tab.....................................................................................................16
Figure 13: OA1 webpage –Help tab ...........................................................................................................17
Figure 14: OA1 webpage –About tab.........................................................................................................18
Figure 15: Dirty connector end-face inspection using JGR's CS400K..........................................................24
Figure 16: Clean connector end-face inspection using JGR's CS400K.........................................................24
Figure 17: Exposed view of good output fiber management .....................................................................24
Figure 18: Exposed view of poor output fiber management......................................................................24
Table 1: Safety symbols.................................................................................................................................4
Table 2: Environmental requirements..........................................................................................................8
Table 3: Detailed description of the OA1 rear panel components (see Figure 3) ........................................9
Table 4: Detailed description of the OA1 Setup page (Figure 9) ................................................................13
Table 5: Standard SCPI required commands list.........................................................................................20
Table 6: OA1 commands list .......................................................................................................................21
Table 7: OA1 optical and electrical specifications sheet.............................................................................27
Table 8: OA1 mechanical and environmental specifications sheet............................................................27
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COMPLIANCE
FDA-CDRH Compliance
Under the US Food and Drug Administration (FDA) Center for Devices and Radiological Health (CDRH), the
unit complies with the Code of Federal Regulations (CFR), Title 21, Subchapter J, which pertains to laser
safety and labeling. See following link for more information:
•http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPartFrom=1000&C
FRPartTo=1050
CSA / IEC Compliance
The unit complies with certain standards of the Canadian Standards Association (CSA) and the
International Electrotechnical Commission (IEC).
The unit falls in the Installation Category (Overvoltage Category) II under IEC 664. IEC 664 relates to
impulse voltage levels and insulation coordination. The category is defined as: local level, appliances,
portable equipment, etc., with smaller transient overvoltages than Installation Category (Overvoltage
Category) III.
The unit falls in the Pollution Degree 2 category under IEC 1010-1 and CAN/CSA-C22.2 No. 1010.1. The IEC
standard on Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use
relates to insulation coordination. The CSA standard is on Safety Requirements for Electrical Equipment
for Measurement Control, and Laboratory Use, Part I: General Requirements. The Pollution Degree 2
category is defined as follows: “Normally only non-conductive pollution occurs. Occasionally, however, a
temporary conductivity caused by condensation must be expected.”
CE Compliance
Electronic test equipment is subject to the EMC Directive in the European Union. The EN61326 standard
prescribes both emission and immunity requirements for laboratory, measurement, and control
equipment. This unit has undergone extensive testing according to the European Union Directive and
Standards.
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GENERAL INFORMATION
OA1 Optical Attenuator Overview
The OA1 Optical Attenuator (Figure 1) enables precise optical power control and features high accuracy
and superior repeatability. It is ideal for lab and production applications including power level adjustment
in automated test systems, BER testing of transmitters and receivers, and channel equalization in WDM
systems.
The OA1 Optical Attenuator is available for single-mode and multimode fibers and can be configured for
various wavelength ranges and input power levels.
Figure 1: OA1 Optical Attenuator
Applications
•Bit error rate (BER) testing
•Link loss simulation
Key Features
•100 dB dynamic range
•± 0.1 dB accuracy
•± 0.01 dB repeatability
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•Customizable
•Touchscreen display
•USB/Ethernet control
Included Accessories
•USB A to USB B cable (1.8m)
•Ethernet cable (1.8m)
•AC power cord (2m)
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SAFETY INFORMATION
To avoid situations that could result in serious injuries or death, always observe the following precautions.
The safety instructions must be observed whenever the unit is operated, serviced, or repaired. Failure to
comply with any of these instructions or with any precaution or warning contained in the user manual is
in direct violation of the standards of design, manufacturing, and intended use of the unit. JGR Optics Inc.
assumes no liability for the customer’s failure to comply with any of these safety requirements.
Safety Markings on the Unit
See Table 1 for symbols and messages that can be marked on the unit. Observe all safety instructions that
are associated with a symbol.
Table 1: Safety symbols
Laser radiation may be present. Refer to the user manual for instructions on handling
and operating the unit safely. Avoid looking into any ports near which this symbol
appears.
Frame or chassis terminal for electrical grounding within the unit.
Protective conductor terminal for electrical grounding to the earth.
WARNING
Procedure can result in serious injury or loss of life if not carried out in proper
compliance with all safety instructions. Ensure that all conditions necessary for safe
handling and operation are met before proceeding.
CAUTION
Procedure can result in serious damage to or destruction of the unit if not carried out
in compliance with all instructions for proper use. Ensure that all conditions necessary
for safe handling and operation are met before proceeding.
Classification
The OA1 consists of an exposed metal chassis that is connected directly to earth via a power cord and is
therefore classified as a Class 1 instrument.
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Important Safety Information
Laser Hazards
Warning
•Never look directly into the end of an optical cable connected to an optical
output device that is operating. Laser radiation is invisible and direct
exposure can severely injure the human eye.
Electrical Hazards
Warning
•Some of the circuits are powered whenever the unit is connected to the AC
power source (line power). To ensure that all circuits are powered off,
disconnect the power cord from either the power inlet on the unit’s rear
panel or from the AC line-power source (receptacle). The power cord must
always be accessible from one of these points. If the unit is installed in a
cabinet, the operator must be able to disconnect the unit from the line power
by the system’s line-power switch.
•Use only the type of power cord supplied with the unit. If you need to replace
a lost or damaged cord, make sure to replace with a power cord of the same
type.
•Connect the power cord only to a power outlet equipped with a protective
earth contact. Never connect to an extension cord or any receptacle that is
not equipped with this feature.
•If using a voltage-reducing autotransformer to power the unit, ensure that
the common terminal connects to the earthed pole of the power source.
•Do not interrupt the protective earth grounding. Such action can lead to a
potential shock hazard that can result in serious personal injury. Do not
operate the unit if an interruption to the protective grounding is suspected.
•Do not operate the unit when its cover or panels have been removed.
•To prevent potentialfire or shock hazard, do not expose the unit to any source
of excessive moisture.
•Do not use the unit outdoor.
•Operating the unit in the presence of flammable gases or fumes is extremely
hazardous.
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•If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired. Only technicians
authorized by JGR Optics Inc. should carry out repairs. In addition to voiding
the warranty, opening the unit (even when unplugged) can expose you to
potential shock hazards.
•Some of the unit’s capacitors can be charged even when the unit is not
connected to the power source.
•Do not perform any operating or maintenance procedure that is not
described in the user manual.
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GETTING STARTED
Caution
•To avoid injury or death, always observe the precautions listed in SAFETY
INFORMATION on page 4.
This manual contains complete operating instructions for safe and effective operation of the OA1 Optical
Attenuator. It is recommended that users of the OA1 familiarize themselves with contents of this manual
before using the instrument.
The inspection report and a description of any customer-requested information may be found in the
calibration document envelope included with the instrument.
Initial Inspection
Warning
•To avoid electrical shock, do not initialize or operate the unit if it bears any
sign of damage. Ensure that the unit and any devices or cords connected to it
are properly grounded.
✓Inspect the package and contents for signs of damage.
✓Ensure all contents are included.
✓Read the user manual thoroughly and become familiar with all safety symbols and instructions to
ensure that the unit is operated and maintained safely.
✓If the initial inspection reveals any damage or missing components, immediately notify JGR Optics
Inc. and if necessary, the carrier.
Operational Requirements
For the unit to meet the warranted specifications, the operating environment must meet the conditions
outlined in Table 2.
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Table 2: Environmental requirements
Parameter
Specification
Altitude
Up to 2000m
Temperature
0 to 40°C
Humidity
Up to 95% RH (0 to 40°C)
Voltage
Main supply voltage fluctuations must not
exceed ± 10% of the nominal voltage
Product Overview
OA1 Front Panel
A front view of the OA1 attenuator is show in Figure 2. The standard front panel bulkhead types are FC or
SC.
Figure 2: Front view of the OA1 Optical Attenuator
OA1 Rear Panel
A rear view of the OA1 attenuator is shown in Figure 3. See Table 3 for a detailed description.
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Figure 3: Rear view of an OA1
Table 3: Detailed description of the OA1 rear panel components (see Figure 3)
Item #
Description
1
LAN/Reset
•Press once: reset network settings
2
Ethernet port
•Connection to LAN
3
USB B port
•Connection to PC
4
USB A ports
•Connections to peripherals
•WARNING: do not connect USB powered devices such as cell phone chargers or
inspection probes
5
IO switch
•On/off toggle
6
Power input
•Contains user-replaceable fuse
1
2
3
4
5
6
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OPERATION
Powering Up the Attenuator
To power up the attenuator:
1. Verify that the power switch is set to the “off” position (O). Connect the attenuator to an AC
power supply using the power cord provided.
2. Toggle the power switch to the “on” position (I).
Setting the Wavelength
Swipe right to access the main operations of the OA1. Pressing the λbutton allows for wavelength
selection (Figure 4).
Figure 4: Front panel operation –setting the wavelength
The OA1 has 4 stored wavelength settings. Pressing the λbutton a second time will display the flyout to
select the wavelength “slot”(Figure 5).
Use arrows to
change wavelength
Press to select wavelength
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Figure 5: Front panel operation –wavelength flyout menu
Setting the Attenuation
Press the Att. button to set the attenuation (Figure 6).
Figure 6: Front panel operation –setting the attenuation
Use arrows to
change attenuation
Press to set the attenuation
Press to engage the beam block
Press and hold to set
attenuation to 0 dB
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Press and hold on the screen to set the attenuation to 0 dB. Press and hold a second time to go to the
minimum IL point.
Pressing the ∞button will engage the beam block shutter (> 100 dB attenuation).
Pressing the Att. button a second time (Figure 7) will display the flyout to select dB or dBm mode. In dBm
mode, with the power monitoring option, the output power can be set in dBm.
Figure 7: Front panel operation –attenuation flyout menu
Setting an Offset
Press the Offset button to set an attenuation offset (Figure 8).
Figure 8: Front panel operation –setting an offset
Use arrows to
change offset
Press to set an offset
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Device Information and Settings
Swipe left to access the Setup page (Figure 9). This page will display information about the unit, its
connectivity status and settings.
Figure 9: OA1 Setup page
Table 4: Detailed description of the OA1 Setup page (Figure 9)
Parameter
Description
Network Status:
•If connected to a network via Ethernet, it will show as Connected.
•If not connected to a network, it will show as Disconnected.
Device Name:
•Displays the PN of the unit.
IP:
•If connected to a network via Ethernet, it will show the IP address of the
unit. Use this IP address to access the OA1 webpage or connect to it via
software.
•If not connected to a network, it will show as N/A.
XN1 Location:
•Shows the IP address and port of the last connected XN1 server.
•If it hasn’t been connected, it will show as N/A.
Power Levelling:
•If enabled, the OA1 will vary the attenuator to match and maintain the
attenuation set in dBm mode.
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OA1 WEBPAGE
To access the OA1 webpage, connect the attenuator to a network and on any computer or tablet on the
same network, open a web browser (recommended: Google Chrome) and enter the OA1’s IP address in
the URL bar.
Dashboard
Access the Dashboard tab to view the manufactured date, part and serial numbers (Figure 10). You can
also download a PDF of the attenuator test report.
Figure 10: OA1 webpage –Dashboard tab
Table of contents
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