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Summary of Contents for Noyes SVA 1
- Page 1 SVA 1 Single-mode Fiber Optic Variable Attenuator User’s Guide T e s t & I n s p e c t i o n...
- Page 2 SVA 1 Single-mode Fiber Optic Variable Attenuator User’s Guide T e s t & I n s p e c t i o n © 2003, AFL Telecommunications, all rights reserved. SVA1-00-1000 Revision C, 9.15.05 Specifications are subject to change without notice.
- Page 3 To return equipment, please contact Noyes be defective within the warranty period will be to obtain additional information and a Service repaired or replaced by Noyes. In no case will Request (S.R.) number. To allow us to serve Noyes liabilities exceed the original purchase you more efficiently, please include a brief...
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Page 4: Table Of Contents
Section 3: Applications System Margin Test ..............4 step I - measure optical power of the transmitter ......4 step II - insert SVA 1 between transmitter and receiver .....6 step III - measure system margin..........7 Receiver Sensitivity Test ..............8 Section 4: Maintenance Cleaning the Optical Ports ............9... -
Page 5: Safety Information
NOTICE! An SVA 1 Single-mode Variable Attenuator contains no user serviceable parts. Except for cleaning optical ports, this instrument must be returned to Noyes or authorized agents for repair. IMPORTANT! Proper care in handling should be taken when using any precision optical test equipment. -
Page 6: Section 1: General Information
Section 1: General Information Thank you for purchasing a Noyes SVA 1 Single-mode Variable Attenuator. The purpose of this user’s guide is to explain how to use and maintain this instrument. Please check our web site at www.AFLtele.com (click on Products > Noyes Test & Inspection) for updates to this manual and additional application information. -
Page 7: Feature Overview
CATV. Recommended Accessories You will need fiber optic test jumpers to connect your SVA 1 to the system under test. Test jumpers must have the same core and cladding size as the fiber under test. Test jumpers require the appropriate connectors on each end to match to the system’s connector style and the output connector on the SVA 1. -
Page 8: Section 2: Functional Description
Input/Output port - us e d to c o nne c t t he us e d to c o nne c t t he SVA 1 to the receiver or SVA 1 to the receiver or SVA 1 transmitter end of the... -
Page 9: Section 3: Applications
Section 3: Applications System Margin Test The SVA 1 is used effectively during system margin measurements. To measure the system margin, first measure the absolute power in dBm of the transmitter with an optical power meter and record the measured NON-ATTENUATED power level. - Page 10 7 Press and hold the REF key until “HELD” appears to set the reference level at the current wavelength. The OPM 5 should display “0 dB” ±0.05 dB. adapter cap transmit jumper NOYES FIBER SYSTEMS OPTICAL POWER METER OPM ACTIVE...
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Page 11: Step Ii - Insert Sva 1 Between Transmitter And Receiver
II - insert SVA 1 between transmitter and receiver 8 Insert the SVA 1 attenuator between the transmitter and receiver. 9 Increase the attenuation by turning the Fine or Course knobs until the Bit Error Rate exceeds the specified minimum rate. -
Page 12: Step Iii - Measure System Margin
!!! If using an optical power meter other then OPM 5 or OPM 4, calculate the system margin by subtracting the NON-ATTENUATED power level from the ATTENUATED power level. Note: Adjusted attenuation is wavelength dependent. Confirm loss levels when changing light source. transmit jumper receive jumper network network transmitter receiver 7.00 dB SVA 1 OPM 5... -
Page 13: Receiver Sensitivity Test
2 Increase the attenuation by turning the Fine or Course knobs until the system operates properly. 3 Connect the optical power meter to the SVA 1 to measure the attenuated power. 4 The loss displayed on the optical power meter is the attenuation required to bring the system within specifications of the receiver. -
Page 14: Section 4: Maintenance
A supply of optical cleaning pads and isopropyl alcohol is recommended to clean the optical ports. Noyes recommends using our new non-flammable, environmentally safe Fiber Optic Cleaning solution and molded dual-head connector end-face cleaning tips. It is important to keep the dust cap in place when the unit is not being used. -
Page 15: Section 5: Specifications Sva 1 Specifications
Section 5: Specifications SVA 1 Specifications Specified Wavelengths 1310 nm & 1550 nm ± 30 nm ≤ 1.5 dB @ 1310 nm Insertion Loss Minimum Attenuation 60 dB Return Loss 50 dB (≥60 dB optional - angled FC) Coarse Adjustment... - Page 16 Thank you for choosing Noyes Test & Inspection 16 Eastgate Park Road ��� Belmont, NH 03220 ���� Phone: 800-321-5298 603-528-7780 Fax: 603-528-2025 www.AFLtele.com > Products > Noyes Test & Inspection T e s t & I n s p e c t i o n...
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