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Bruker IFS 125M - User Manual

Bruker IFS 125M
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IFS 125M
User Manual
1015996

Table of Contents

Questions and Answers

  • W
    William WestAug 18, 2025
    What to do if the red ERR LED is on for Bruker IFS 125M Laboratory Equipment?
    • P
      Phillip MillerAug 18, 2025
      If the red ERR LED on the electronic mobile unit lights up, it indicates that strong mechanical shocks may have caused a temporary or permanent optics misalignment, or the HeNe laser might be defective. In this case, contact Bruker service for assistance.
  • M
    Mark WaltonAug 21, 2025
    Why is no interferogram observable on my Bruker IFS 125M Laboratory Equipment?
    • L
      Leslie MathewsAug 21, 2025
      If no interferogram is observable, several issues could be the cause: * No optics connected. * OPUS status light is gray: check the optical bench URL. * Wrong measurement parameters: use the measurement parameters as described in appendix C. * Optical path blocked: check whether any accessory blocks the IR beam. * Detector not or incorrectly installed: check whether the detector is properly inserted into its holder. * No or wrong detector selected: select the correct detector on the OPUS Measure menu. * Wrong peak position saved: determine and save the correct peak position.
  • T
    travisjohnsonAug 23, 2025
    Why are all voltage status LEDs off on my Bruker IFS 125M?
    • D
      dyermicheleAug 23, 2025
      If all voltage status LEDs are off, it could be due to several reasons: * The spectrometer is not turned on: Turn the main power switch to the 'ON' position. * The power cord is not connected: Connect the power cord to both the power outlet and the appliance inlet connector. * Voltage is not available: Verify that the proper voltage is supplied at the outlet.
  • I
    isolomonAug 26, 2025
    What to do if the green RX LED is on but the yellow TX LED is off on Bruker Laboratory Equipment?
    • D
      David RileyAug 26, 2025
      If the green RX LED is on while trying to establish a connection, but the yellow TX LED is off, it could be due to: * A wrong IP address assigned to the spectrometer: Assign the correct IP address to the spectrometer. * TCP/IP settings mismatch between spectrometer and computer/network: Refer to chapter 9.
  • D
    David EllisAug 27, 2025
    Why is one voltage status LED off on my Bruker IFS 125M?
    • E
      emily11Aug 28, 2025
      If one voltage status LED is off, it could be due to: * An external device shortening the power supply unit: Disconnect all external devices from the CAN bus or MPE port. * Temporary short circuit: Switch off the spectrometer, wait about 30 seconds, and switch it on again. * Defective LED: In this case, there is no spectrometer malfunction, and the spectrometer operates properly. The defective LED has to be replaced.
  • A
    Amber ManningAug 30, 2025
    Why is the SR LED permanently on in my Bruker IFS 125M Laboratory Equipment?
    • S
      Susan LarsenAug 30, 2025
      If the SR LED is permanently on, it could be because: * The spectrometer is still in the initialization phase: Wait about 1 minute until the initialization procedure is completed. * The spectrometer control hangs: Reset the spectrometer using the RES button.
  • L
    lindseygillespieSep 1, 2025
    What to do if the temperature is out of range for Bruker IFS 125M Laboratory Equipment?
    • S
      Shannon RoweSep 1, 2025
      If the temperature is out of range, it means that the ambient temperature is too high. To resolve this, operate the spectrometer only within the ambient temperature range specified by the manufacturer (18 - 35°C).
  • R
    Robert KerrSep 4, 2025
    How to fix buffer overflow in the optics controller of Bruker IFS 125M?
    • H
      Howard BlackburnSep 4, 2025
      If a buffer overflow occurs in the optics controller, which indicates a severe problem in the data transfer from the DSP of the optics to OPUS, reduce the scanner velocity.
  • B
    Benjamin DaughertySep 6, 2025
    What does 'Scanner initialization mode' mean on Bruker IFS 125M Laboratory Equipment?
    • J
      Jennifer PhillipsSep 6, 2025
      If the scanner is in initialization mode, this error message appears when you try to start a measurement while the spectrometer is still initializing. Wait until initialization has been finished.
  • I
    istuartSep 8, 2025
    Why is no signal detected in OPUS with my Bruker IFS 125M Laboratory Equipment?
    • A
      Amber AguilarSep 8, 2025
      If no signal is detected in OPUS, it indicates that the wrong OPUS parameters were selected. To fix this, select the correct OPUS parameters.

Summary

Introduction

About this manual

Provides an overview of the IFS 125M FT-IR spectrometer documentation and safety instruction classifications.

Safety

Details on safety precautions, observing instructions for user safety and property damage avoidance.

Warning labels

Explanation of various warning symbols and their meanings for safe operation.

General information

Covers general operational information including protective earthing and personnel qualifications.

Protective earthing

Instructions for connecting the spectrometer's power cord to an earthed socket for safety.

General

Design

Describes the physical design features of the IFS 125M spectrometer.

Optics

Details the optical specifications and components of the spectrometer.

Data acquisition

Explains the data acquisition process and hardware used by the spectrometer.

Installation

Delivery contents

Lists the standard and optional components included with the IFS 125M spectrometer.

Site requirements

Specifies the environmental and electrical conditions needed for spectrometer installation.

Connection ports

Identifies and defines the various connection ports on the electronics unit.

Connecting spectrometer to power supply

Step-by-step guide for connecting the spectrometer to its power supply.

Inserting beamsplitter

Instructions for correctly inserting the beamsplitter into the spectrometer.

Description

Spectrometer front side

Details and labels the components visible on the front of the spectrometer.

Sample compartment

Describes the sample compartment and its use for accessories like gas cells.

Beamsplitter types

Lists and describes different beamsplitter types, their spectral ranges, and part numbers.

Detector types

Details important detector types used with the spectrometer, including spectral range and part numbers.

Optical path

Explains the path of light through the spectrometer's optical system.

Operation

Operating safety

Highlights safety precautions related to laser radiation and high voltages during operation.

Switching spectrometer on and off

Describes the procedure for powering the spectrometer on and off using the main power switch.

Checking the signal

Procedure for verifying signal detection and intensity after component replacement.

Performing measurement

Guides on setting up and executing different types of spectroscopic measurements.

Changing beamsplitter

Instructions and handling advice for changing the spectrometer's beamsplitter.

Cooling detector

Information on cooling the MCT detector using liquid nitrogen and its associated features.

Changing detector

Procedure for safely changing the detector in the spectrometer.

Maintenance

General maintenance considerations

Outlines essential safety precautions and guidelines for performing maintenance procedures.

Checking laser signal

Procedure for checking laser signals to ensure proper scanning and path difference determination.

Quick check in OPUS

Steps to perform a quick check of laser signals using the OPUS software.

Replacing source

Detailed instructions for replacing the spectrometer's light source.

Replacing window

Procedure and guidelines for replacing optical windows in the spectrometer.

Transporting spectrometer

Instructions for preparing the spectrometer for transport, including cover removal.

Removing covers

Step-by-step guide on how to remove covers for maintenance or transport.

Moving and fixing scanner

Procedure for safely moving and fixing the scanner during transport preparation.

Re-installation after transport of spectrometer

Steps for re-installing the spectrometer after it has been transported.

Remounting complete scanning arm

Instructions for correctly remounting the scanning arm after transport.

Re-adjusting fiber-coupling head

Procedure for re-adjusting the fiber-coupling head for optimal laser signal alignment.

Troubleshooting

General information on fault diagnostics

Provides a general procedure for diagnosing spectrometer problems and identifying causes.

Spectrometer problems indicated by an error message in OPUS

Lists common error messages in OPUS, their possible causes, and troubleshooting steps.

No interferogram observable in Check Signal mode

Troubleshooting steps for when no interferogram is displayed in Check Signal mode.

Spectrometer problems indicated by diagnostics LEDs

Explains spectrometer issues indicated by various diagnostic LEDs on the electronics unit.

ERR and SR LEDs

Details the meaning and troubleshooting for the ERR and SR diagnostic LEDs.

No data transfer between spectrometer and PC

Troubleshooting for issues related to data transfer and connection problems.

Web Interface

Access rights

Discusses access conflicts and control when connecting to the spectrometer via a network.

Spectrometer diagnostics pages

Overview of accessing and using the spectrometer's web-based diagnostic pages.

Direct command entry

Explains how to send direct commands to the spectrometer via the web browser.

Diagnostics

Provides a general overview of the spectrometer's functional state through diagnostic pages.

Laser diagnostics page

Details the laser's status, operational hours, and related diagnostics.

Full report

Describes how to generate and interpret a full report for instrument diagnostics.

Data Communication

Configuration types

Outlines possible configurations for connecting the spectrometer to a PC or network.

Connecting spectrometer to a stand-alone PC (standard)

Step-by-step guide for setting up a direct connection to a standalone PC.

Network addresses

Details the standard and optional network addresses for spectrometer connectivity.

Assigning network addresses

Instructions on how to assign new IP addresses to the spectrometer using FCONF.

Connection Ports

Flange panel

Details the components and definitions of the ports on the flange panel.

Electronics connections and LEDs

Explains the electronic cable connections and LEDs for instrument diagnostics.

Specifications

Additional information to the resolution specifications

Provides further details and context regarding the spectrometer's resolution specifications.

Spare Parts

Default Parameter Settings

Firmware Update

Performing firmware update

Step-by-step guide for updating the spectrometer's firmware using the FCONF program.

Restoring a previous firmware version

Instructions on how to restore a previously backed-up firmware version.

Glossary

Addresses

Bruker IFS 125M Specifications

General IconGeneral
CategoryLaboratory Equipment
SoftwareOPUS
TypeFTIR Spectrometer
DetectorsDTGS, MCT
Light SourceTungsten-Halogen
Interferometer TypeMichelson interferometer
VacuumOptional
Computer InterfaceEthernet

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