JDS Uniphase RM3750 user manual Laser Stability, Calibration, Other Display Problem Solution

Page 36
Page 36 of 39

RM3 SERIES BACKREFLECTION METER

USER’S MANUAL

Laser Stability

If the messages “Source Unstable” or “Input Low” are displayed, remove the front connector panel, clean the front panel connectors, connect the internal FC/APC connector to the detector adapter, and press the Power key to set the meter to Power mode. The reading must be steady and higher than -10 dBm. If not, perform the procedure recommended in the table that follows.

Calibration

If the backreflection or power calibration was not performed properly, set BR CAL to 0.3 dB and Power CAL to 0 dB to restore the factory-set calibration. These settings provide

reasonably￿

accurate backreflection and power measurements.

 

Other

 

 

 

 

 

 

 

 

Display

Problem

Solution

 

 

 

 

 

￿

 

 

Meter does not turn on

Set the power switch to OFF, connect

 

 

 

the RM meter to a power source, and

 

 

 

wait a few minutes before turning the

 

 

 

power switch on.

STABILIZING

Message is displayed for a

Set the power switch to OFF, connect

 

 

 

long time

the RM meter to a power source, and

 

 

 

 

then set the power switch to ON.

 

 

 

 

 

 

*

 

The BR measurement is

Follow the setup and measurement

 

 

 

approaching the range limit

techniques described in the Setting

 

 

 

of the RM meter

Up the Meter for Backreflection

 

 

 

 

Measurements and Measuring

 

 

 

 

Backreflection sections.

 

 

 

 

 

B

Battery is running low

Connect the RM meter to the a power

 

 

 

 

supply using the cord provided.

 

 

 

 

 

 

<

 

BR range is very limited

Follow the setup and measurement

 

 

 

 

techniques described in the Setting

 

 

 

 

Up the Meter for Backreflection

 

 

 

 

Measurements and Measuring

 

 

 

 

Backreflection sections.

 

 

 

TOO MUCH LIGHT

ID value is too high

Attach the detector cap to the detector,

 

 

 

 

and press the ID key.

INPUT LOW

Laser power is too low

Check the measurement setup for an

 

 

 

 

external source that entered into the

 

 

 

 

output.

 

 

 

INPUT HIGH

Laser power is too high

Check the measurement setup for an

 

 

 

 

external source that entered into the

 

 

 

 

output.

 

 

 

 

 

 

 

 

 

 

10112341 Rev 002

Page 35 Page 37
Image 36
Page 35 Page 37
Contents RM3 Series Backreflection Meter User’s ManualContents Customized Features and Test Data Programming GuideSafety Information, Instructions, and Symbols Safety InformationClass Laser Product Safety Instructions Before Initializing and Operating the UnitOperating the Unit RM3 Series Backreflection Meter USER’S Manual Safety Symbols SymbolProceeding Compliance CE ComplianceFDA-CDRH Compliance CSA / IEC Compliance RM3 Series Backreflection Meter USER’S Manual General Information and Specifications General InformationLoss and Power Measurements Backreflection MeasurementsKey Features Output PortInternal Light Sources Hybrid JumpersStandard Accessories Optional AccessoriesApplications Specifications Parameter Specification Single-mode MultimodeFlexcor is a trademark of CorningR Electrical PhysicalEnvironmental Getting Started Before Initializing and Operating the UnitInitial Inspection Operating Environment Storing and ShippingCleaning Connectors Powering Up the Meter Connector Cleaning connector type can varyOperating and Maintenance Instructions Front PanelKey/LED Description Rear Panel Termination TechniquesComponent Function Termination Techniques for Single-mode Fiber except 980 nmMeasuring Backreflection for Single-mode except 980 nm Setting Up the Meter for Backreflection Measurements Backreflection MeasurementsMeasuring Backreflection Loss and Power Measurements Setting Up the Meter for Loss and Power MeasurementsBackreflection Accuracy and Range Measuring Power Loss and Power MeasurementsMeasuring Relative Power Insertion Loss Measuring Absolute PowerData Logging Using the Foot Pedal Messages and SymbolsPower Accuracy Display DescriptionCalibrating the Meter StabilizingBackreflection Calibration Adjustment Power Calibration AdjustmentCleaning the Unit Cleaning the Connector EndsMaintaining the Meter Recharging the Battery Replacement of Internal FusesTroubleshooting Front Panel Connectors Long Cables for single mode model only, except 980 nm modelLoss Before the DUT Reflections Before the DUTOther Display Problem Solution Laser StabilityCalibration Up the Meter for BackreflectionRS232 Interface Specifications Name Symbol Pin Number Signal DirectionProgramming Guide RS232 Serial InterfaceCommand Action Left Dip Switch Switch Setting MeaningRight Dip Switch RS232-GPIB ConverterProgramming Examples RS232 Interface Program ExampleCustomized Features and Test Data

RM3750 specifications

The JDS Uniphase RM3750 is a cutting-edge optical spectrum analyzer that has garnered attention in various telecommunications and photonics applications. Renowned for its versatility and accuracy, the RM3750 combines advanced technologies to provide users with unprecedented measurement capabilities, making it an essential tool for researchers and engineers working in fiber optics, laser development, and spectral analysis.

One of the standout features of the RM3750 is its wide dynamic range. This feature allows users to obtain precise measurements across a broad spectrum of optical signals, which is crucial in environments where signal strength can vary significantly. The analyzer is designed to handle both high-intensity signals and weak optical events, ensuring that no detail is missed during analysis.

The RM3750 incorporates a high-resolution detection mechanism that enables it to distinguish closely spaced wavelengths. This characteristic is particularly beneficial in applications where wavelength spacing is minimal, such as in dense wavelength division multiplexing (DWDM) systems. The high resolution also allows for accurate characterization of spectral features, including signal peaks and noise.

In addition to its impressive measurement capabilities, the RM3750 supports advanced analysis and real-time monitoring. Users can visualize spectral data through an intuitive graphical interface, which aids in the quick interpretation of results. The instrument is equipped with real-time data processing capabilities, allowing users to observe changes in optical signals as they occur, a critical feature for dynamic environments like live signal monitoring.

The JDS Uniphase RM3750 is not only about hardware; it also comes with an array of software tools designed to enhance functionality and ease of use. These tools allow for automated measurements, data logging, and integration with other laboratory instruments. Moreover, the ability to export data in various formats facilitates easy sharing and analysis across platforms.

Another notable characteristic of the RM3750 is its compact design and robust build quality. This ensures that it can operate effectively in demanding laboratory conditions while being portable enough for field applications.

In conclusion, the JDS Uniphase RM3750 optical spectrum analyzer stands out for its combinations of wide dynamic range, high resolution, real-time monitoring, and user-friendly software integration. These characteristics make it an exceptional tool for professionals in telecommunications and optical research, enabling them to conduct more accurate and insightful measurements.
Top Page Image Contents