Terahertz Technologies FM-1600 Operating Instructions Manual

FM-1600 Fiber Optic Multiplexer

Operating Instructions

Terahertz Technologies Inc.

169 Clear Road Oriskany, New York 13424

[phone]

October 1997

Copyright 1996, 1997 Terahertz Technologies Inc.

GENERAL INFORMATION

Introduction..........................................................................................................................2

Specifications.......................................................................................................................3

OPERATING INSTRUCTIONS

Unpacking and Inspection....................................................................................................4

Input Power Requirements...................................................................................................4

Controls & Their Functions.................................................................................................5

Serial Commands.................................................................................................................6

Operational Considerations..................................................................................................7

Table of Contents

PAGE

Theory of Operation.............................................................................................................8

WARRANTY INFORMATION

Repair Information...............................................................................................................9

Limited Warranty ................................................................................................................9

International Representatives.............................................................................................10

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Introduction

The FM-1600 Fiber Optic Multiplexer is in essence a two-pole, eight position fiber optic switch. It is
intended to be used in FTIR spectroscopic applications to select any one of eight optical sampling
regions and interpose it in the interferometer optical path. Switching both ends of the optical path
eliminates the spurious spectral distribution problems encountered when using fiber optic bundle source
distribution to sampling regions. The unit may be operated from its front panel controls or by means of
a serial computer interface. The standard interface is Rs-232. Optional modules are available to inter­face with Rs-422 or Rs-485 systems. Up to 100 unique serial addresses may be assigned to the unit for
use with Rs-485 controllers.

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Specifications

Standard Fiber Type.................. 3 M FG-550-LE R 550 uM core, Low O H ion content fused silica fibe

Fiber Numerica l Aperture ...................................................................................................................0.29

Insertio n Loss..................... .. .< 1 dB excludi ng connectors (typica l connector los s is 0.5 dB, 1 dB max.)

Standard Connecto r Type..............................................................................ST Bayo net Stainle ss Steel

Switchi ng and settling time....................................................................................................< 3 Seconds

Repeatability.............. ....... .. .. .......... ......... .. .................................. ......... ..........Better than 0.02 dB (0.5%)

Durability............ ...................................... ...................................... ...............................> 10 million cycles

Cha nne l Cross Ta lk.................................................... ............................................... ..Better tha n - 70 dB

Baud Rates. ... ................................... ... ...................................... ..........................1200, 2400, 4800, 9600

Addressing............................. .................... ....................100 uniq ue addres ses settab le from front panel

Cha nne l to Cha nne l Ma tching............................................................ ...............Be tter than 0.25 dB (5 %)

Displa y.......................... .....................................................................0.56 " (14 mm) green LED 565 nm

r

Size.......................................................... .......................................8.3 " x 5 " x 14 " (21 x 12 x 35.6 cm)

Weight.... ...................................... .......................................... ................................................9 lbs ., (4 kg )

Ope rating Temperature.......................... .................................... .......................................... ........0 - 40 C

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