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Electronic Variable Optical Attenuators

Chapter 6: Specifications

Rev A, November 14, 2016

Page 13

6.2. Mechanical

Drawings

3.1 mm

(0.12")

55.2 mm

(2.17")

166.9 mm

(6.57")

161.0 mm

(6.34")

87.0 mm

(3.43")

93.2 mm

(3.67")

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Содержание EVOA800A

Страница 1: ...EVOA800F EVOA800A Electronic Variable Optical Attenuators User Guide ...

Страница 2: ...Instructions Details 7 4 1 Overview 7 4 2 Powering Charging the Unit 7 4 3 Fiber Connections 8 4 4 Wavelength Selection Calibration 8 4 5 Attenuation Control 9 4 6 Digital Output Power Display 9 4 7 Modulation Input Monitor Output Connections 9 4 8 Power Lock 10 Chapter 5 Maintenance Repair 11 Chapter 6 Specifications 12 6 1 General Specifications 12 6 2 Mechanical Drawings 13 Chapter 7 Regulatory...

Страница 3: ...n Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal Equipotentiality On Supply Off Supply In Position of a Bi Stable Push Control Out Position of a Bi Stable Push Control Caution Risk of Electric Shock Caution Hot Surface Caution Risk of Danger Warning Laser Radiation Caution Spinning Blades May Caus...

Страница 4: ...ordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation Thorlabs is not responsible for any radio television interference caused by modifications of this equipment or the substitution or attachment of connecting cables and equipment other than those specified by Thorlabs The cor...

Страница 5: ...the EVOA e g 780HP and either FC PC connectors Item EVOA800F or FC APC connectors Item EVOA800A are accepted The wavelength selector switch accesses calibrated settings for 785 nm and 852 nm and also provides a position which the user can calibrate for any wavelength from 780 nm to 980 nm The unit is battery powered and can last for hundreds of hours on a single charge Charging can be done through...

Страница 6: ... 3 Fiber Interface Utility Panels Rocker Power Switch 2 1 mm Charging Jack for Included Power Supply USB Mini B Charging Jack Charging Indicators Green Fully Charged Yellow Charging SMA Modulation Input SMA Monitor Output User Wavelength Calibration Pot Output Bulkhead Input Bulkhead Connector Label Figure 2 Fiber Interface Panel Top View ...

Страница 7: ... and output fiber patch cables single mode only to the bulkheads Make sure they are clean We recommend the FCC 7020 Fiber Connector Cleaner and the FBC1 Bulkhead Cleaner for fiber tips and bulkheads respectively 3 Select the desired wavelength with the selector knob The unit is factory calibrated for both 785 nm and 852 nm Other wavelengths in the 780 980 nm range can be user calibrated 4 Turn the...

Страница 8: ...e controlled by the manual power adjustment knob the Power Lock control loop or the SMA modulation input When the power is switched off the EVOA defaults to a mid range attenuation whose value is independent of the knob position 4 2 Powering Charging the Unit The EVOA is powered by an internal rechargeable Li ion battery which provides approximately 300 hours of continuous operation on a full char...

Страница 9: ...is is a precautionary feature that uses virtually no current as the EVOA is an ultra low current device This feature does not drain the battery meaningfully faster than the battery itself would lose charge otherwise 4 3 Fiber Connections The fiber patch cable input and output bulkheads see Figure 2 are both FC style They may be ordered with PC or APC style internal connectors Item EVOA800F has FC ...

Страница 10: ...t panel see Figure 1 This knob provides the full range of attenuation Rotating it clockwise increases the output power while rotating it counterclockwise decreases the output power The knob has ten full rotations The second method is to apply a voltage to the SMA modulation input on the side utility panel see Figure 3 This input allows for modulation from DC to 1 kHz See Section 4 7 Modulation Inp...

Страница 11: ...ower setpoint This circuit has a maximum bandwidth of 1 Hz Note that pushing the button may cause a slight offset in the output power which is due to the resolution of the sample and hold circuit If the manual power adjustment knob is rotated while Power Lock is active then disengaging the button will cause the output power to jump to the value determined by the knob The indicator LED next to the ...

Страница 12: ...rt thorlabs com Do not disassemble the unit There are no user serviceable components inside The end faces of any fiber patch cables being connected to the EVOA should be cleaned every time a connection is made Use for example Thorlabs FCC 7020 Fiber Connector Cleaner sold separately The end faces of the EVOA s internal connectors can be easily damaged by dirty fiber ends and if damage occurs the u...

Страница 13: ...nnector Modulation Input Input Voltage 0 V to 4 9 V Absolute Maximum 5 0 V Input Impedance High Z Bandwidth DC to 1 kHz Typ Connector Female SMA Monitor Output Conversion Gain 20 mV mW Output Impedance High Z Bandwidth DC to 1 kHz Min DC to 2 kHz Typ Connector Female SMA Battery Specifications Battery Life 300 h Typ from Full Charge Battery Charge 3000 mAh Battery Charging Time 5 h Typ from 2 1 mm...

Страница 14: ...Electronic Variable Optical Attenuators Chapter 6 Specifications Rev A November 14 2016 Page 13 6 2 Mechanical Drawings 3 1 mm 0 12 55 2 mm 2 17 166 9 mm 6 57 161 0 mm 6 34 87 0 mm 3 43 93 2 mm 3 67 ...

Страница 15: ... other Thorlabs products such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the user PCB s housings etc If you wish to return a Thorlabs unit for waste recovery please contact Thorlabs or your nearest dealer for further information Waste Treatment is Your Own Respons...

Страница 16: ...Electronic Variable Optical Attenuators Chapter 8 Certificate of Compliance Rev A November 14 2016 Page 15 Chapter 8 Certificate of Compliance ...

Страница 17: ...ormation USA Canada and South America Thorlabs Inc sales thorlabs com techsupport thorlabs com Europe Thorlabs GmbH europe thorlabs com France Thorlabs SAS sales fr thorlabs com Japan Thorlabs Japan Inc sales thorlabs jp UK and Ireland Thorlabs Ltd sales uk thorlabs com techsupport uk thorlabs com Scandinavia Thorlabs Sweden AB scandinavia thorlabs com Brazil Thorlabs Vendas de Fotônicos Ltda bras...

Страница 18: ...www thorlabs com ...

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