Product Bulletin Manual Precision Variable Attenuators (VA5B and VA6B Series) JDS Uniphase precision variable attenuators provide precise, repeatable, and manual control of light levels for field system testing as well as for test and development in laboratory applications. Both series use micrometer control for high-resolution attenuation of 50-70 dB with calibration wavelengths of 830, 1300, or 1550 nm. Using our ultra-linear attenuator prism and highly reliable microlens technology, they provide highly accurate, continuously variable attenuation with low insertion loss and an excellent return loss of > 60 dB. Each model is available in both single -mode and multimode versions. Single-mode models are available with our analog option and feature > 60 dB return loss and low spectral ripple for CATV AM systems. These attenuators are battery-powered for portability and convenient use in the field when high precision is required. The VA5B attenuator features 3 mm cable pigtails that are supplied bare or with the customer's choice of connector type. The VA6B attenuator features a panel-mounted PC or APC universal connector adapter (UCA), which supports FC/PC, SC/PC, and ST/PC or FC/APC and SC/APC connector types. Key Features & Benefits * * * * * * * Highly precise attenuation 0.01 dB resolution Low insertion loss Return loss > 60 dB Long battery life Portable for field use Universal connector adapter Applications * * * * Precise optical power control Receiver testing Field system testing Power meter linearity checks Manual Precision Variable Attenuators (VA5B and VA6B Series) | 2 Specifications PARAMETER Operating wavelength range1 Attenuation range 2 Attenuation 830 nm single-mode (SM) multimode (MM) SM MM resolution 2 repeatability accuracy 2, 3, 4 Insertion loss 2, 5, 6 Return loss 3 1300 nm 750-1000 nm 750-700 nm 40 dB 70 dB SM SM, analog MM, 50/125 m MM, other Maximum optical input power Recalibration period (recommended) Polarization dependent loss 3 Connectors VA5B VA6B Operating temperature Storage temperature Humidity 1. 2. 3. 4. 5. 6. 1550 nm 1200-1700 nm 1200-1700 nm 750-1700 nm 1200-1700 nm 60 dB 60 dB 50 dB 60 dB 0.01 dB 0.02 dB 0.1 dB or 0.02 dB/dB, whichever is greater 1.5 dB > 45 dB > 60 dB > 35 dB > 30 dB 200 mW 2 years 0.08 dB pigtail mounted bulkhead mounted universal PC or APC 0-50 C - 40-60 C maximum 95 % up to 40 C, 60 % above 40 C Recommended wavelength range for acceptable insertion loss and attenuation slope. At calibration wavelength. Except below 3 dB attenuation, measured with a laser source. At constant temperature. Not including connectors, if installed. Including bulkhead mounted UCAs, the VA6B unit has an insertion loss of 2.5 dB. Ordering Information Sample Order: VA5B71+1KFP0 Indicate your requirements by selecting one option from each configuration table. Print the corresponding codes in the available boxes to form your part number. VA For more information on this or other products and their availability, contact your local JDS Uniphase sales representative or JDS Uniphase directly. JDS Uniphase Corporation 570 West Hunt Club Road Nepean (Ottawa), Ontario K2G 5W8 Canada B +1 CODE PORT T YPE CODE CONNECTOR T YPE 1 5 6 Pigtails UCA bulkheads FP FA SC SU SP NC FC/HPC FC/APC SC/HPC SC/APC ST/HPC No connector CODE FIBER T YPE ( m ) 7 1 2 9/125 50/125 62.5/125 CODE CALIBRATED WAVELENGTHS ( nm ) 9 3 1 830 1300 1550 Tel 613 727-1303 Fax 613 727-8284 instruments@jdsuniphase.com www.jdsuniphase.com CODE RETURN LOSS CODE CARRY CASE K A Low Analog (> 60 dB SM) 0 1 Without With All information contained herein is believed to be accurate and is subject to change without notice. No responsibility is assumed for its use. JDS Uniphase Corporation, its subsidiaries and affiliates, or manufacturer, reserve the right to make changes, without notice, to product design, product components, and product manufacturing methods. Some specific combinations of options may not be available. Please contact JDS Uniphase for more information. (c)JDS Uniphase Corporation. All rights reserved. MKT-DS-0099 Rev. 500 01/03/01