THORLABS EVOA1550A User Manual Download | Manualshive

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EVOA1550F & EVOA1550A
Electronic Variable Optical
Attenuators

User Guide

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Summary of Contents for EVOA1550A

Page 1: ...EVOA1550F EVOA1550A Electronic Variable Optical Attenuators User Guide...

Page 2: ...nstructions 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 Mo...

Page 3: ...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...

Page 4: ...rdance 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 responsi...

Page 5: ...d accept either FC PC connectors Item EVOA1550F or FC APC connectors Item EVOA1550A The wavelength selector switch accesses calibrated settings for 1310 nm and 1550 nm and also provides a position whi...

Page 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 Inpu...

Page 7: ...ally takes 5 hours to reach a full charge starting from the Low Battery indicator that lasts for hundreds of hours 2 Connect input and output fiber patch cables single mode only to the bulkheads Make...

Page 8: ...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 indep...

Page 9: ...at 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 Connec...

Page 10: ...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...

Page 11: ...wer 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 th...

Page 12: ...t 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...

Page 13: ...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...

Page 14: ...Electronic Variable Optical Attenuators Chapter 6 Specifications Rev B September 5 2017 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...

Page 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 disassem...

Page 16: ...Electronic Variable Optical Attenuators Chapter 8 Certificate of Compliance Rev B September 5 2017 Page 15 Chapter 8 Certificate of Compliance...

Page 17: ...anada and South America Thorlabs Inc sales thorlabs com le techsupport thorlabs com Europe Thorlabs GmbH europe thorlabs com France Thorlabs SAS SA sales fr thorlabs com Japan Thorlabs Japan Inc sales...

Page 18: ...www thorlabs com...

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