THORLABS EVOA800A, Руководство пользователя

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Electronic Variable Optical Attenuators Chapter 3: Introduction & Quick Start
Page 4 TTN116996-D02
Figure 1 Front View
Chapter 3 Introduction & Quick Start
3.1. Introduction
The EVOA800F and EVOA800A are electronically controlled variable optical
attenuators (EVOAs) designed for single mode fiber applications. The control
knob allows analog adjustment of the attenuation, while the digital meter
reports the actual output power. A key feature is the Power Lock function,
which allows the user to lock the output power level by using the VOA as a
power stabilizer.
Optical fibers coupled to these EVOAs should be single mode over the
operating range of 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 the utility side panel with either the
included external power supply or a USB mini-B cable (not included). The side
panel also provides an external modulation input and a power monitoring
output via SMA connectors.
3.2. Features
Digital Display
Wavelength
Selector: 785 nm,
852 nm, or User
Bi-Stable Lock
Button
Fiber Bulkhead (2 Places)
2.0 mm Narrow Key
Label Indicates PC or
APC Compatibility
Utility
Panel
Power Adjustment
Knob
Rocker
Power
Switch