Model 428 User’s Manual INTRODUCTION
Bristol Instruments, Inc. 4
1 INTRODUCTION
Welcome
Thank you for purchasing the 428 Multi-Wavelength Meter from Bristol Instruments. Two different
versions of this system are available, the 428A and the 428B. The 428A measures the absolute
wavelength of CW lasers to an accuracy of ± 0.2 parts per million (± 0.3 pm at 1550 nm). The
428B has an accuracy of ± 0.65 parts per million (± 1.0 pm at 1550 nm). The operational
wavelength range of these systems is 1270 – 1650 nm (236 – 182 THz).
This User’s Manual includes information about the 428A and 428B Multi-Wavelength Meters. It
covers all the topics necessary to help you operate your system.
If you have any questions about the operation of your 428 system, please do not hesitate to call
Bristol Instruments at (585) 924-2620. Or, you can contact us at service@bristol-inst.com.
Bristol Instruments, Inc.
50 Victor Heights Parkway
Victor, NY 14564
Tel: (585) 924-2620
Fax: (585) 924-2623
service@bristol-inst.com
www.bristol-inst.com
Safety Notices
Warning denotes a hazard. It calls attention to a procedure that, if not correctly performed or
adhered to, could result in injury or loss of life. Do not proceed beyond a warning sign until the
indicated conditions are fully understood and met.
Caution denotes a hazard. It calls attention to a procedure that, if not correctly performed or
adhered to, could result in damage to or destruction of the product. Do not proceed beyond a
caution sign until the indicated conditions are fully understood and met.
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