Fluke 943-27, 943-227-15 manual Troubleshooting / Adjustments

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943-227-15 Digital Preamplifier

Operator Manual

4.3 Troubleshooting

WARNING

Extreme care must be used when troubleshooting a system that has power applied. All standard troubleshooting precautions apply.

WARNING

Once a problem has been located, remove all power before continuing with the repair.

CAUTION

Personnel performing the troubleshooting/repair must be qualified to ANSI 45.2.6, 1978, Skill Level II.

Personnel performing the following procedure must be familiar with the operation of the monitoring system and the location of each piece of equipment used in the system.

If a problem develops, verify that the voltages at connection point inputs and outputs are present and that all wiring is secure. Refer to Appendix B and C for drawings and parts lists. If a PROM requires replacement, specify the board revision level when ordering the part.

Troubleshooting / Adjustments

Troubleshooting includes a verification of the LED operation status, the DC voltage levels and the loop communication loop fuses (Victoreen Loop Communications only).

Specialized test equipment and firmware are required to adjust the auto-zero and PGA subsystems in the electrometer. If the test equipment and firmware is not available, the unit should be returned to Fluke Biomedical RMS for re-alignment.

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Contents Victoreen Fluke Biomedical Table of Contents Blank General Information General DescriptionApplication Preamplifier Variations Application Detector Readout SpecificationsFeature Specification Preamplifier Power Jumper Normal Setting Function Cal. Position Switch Normal Switch FunctionOFF Selects 300 baud 1/ON Selects 4800 baud normal setting Jumper Normal Setting Function Alternate SettingDetector Connections TB1943-227-15 Description Connects To 977-210-10M J4-1Part Number Description Used On Auxiliary EquipmentRecommended Spare Parts Receiving InspectionStorage Blank Functional Description Theory of OperationFunction Hex Address Bit Position Description Theory of Operation Main Circuit BoardsRS232 Transmit Test Point FunctionRS232C Communications Victoreen Communications Loop 943-227-15VLJumper Normal Function Alternate Setting Enables Victoreen LoopJumper Normal Function Cal Setting Position Electrical Interface InstallationOperation Preamplifier MountingSet-up Digital Preamplifier Normal Operation Fail AlarmPower Failure OperationFirmware Version Configuration FunctionsTo B Enables Victoreen Loop To C Enables RS232C Normal To B Normal Operation To C PGA Offset AdjustSoftware Calculations Set Point Error CodesBlank Electronic Calibration Maintenance, Calibration and TroubleshootingMaintenance Electronic AdjustmentsTroubleshooting / Adjustments TroubleshootingConnector DESIGNATIONS, 943-227-15 and 943-227-15VL Connector DesignationsSwitch and Jumper POSITIONS, 943-227-15 and 943-227-15VL Related Manuals Not Supplied with this document Applicable Drawings 943-227-15VLBlank Bill of Materials Bill of Materials- 943-227-15 and 943-227-15VLPart Number Description Blank Cable Termination Instructions Cable Termination InstructionsDetector Cable Termination Digital Preamplifier HV Connector Notes HV Digital Preamplifier Cable Termination Instructions D Digital Preamplifier Appendix Cable Termination Instructions Digital Preamplifier Modification Sheets, Engineering Instructions Modification Sheets, Engineering InstructionsBlank Blank Fluke Biomedical

943-227-15, 943-27 specifications

The Fluke 943-27 and Fluke 943-227-15 are advanced electrical testing tools designed to meet the demands of professionals in industrial and commercial settings. Recognized for their accuracy and reliability, these devices come loaded with essential features tailored to ensure optimal performance during electrical measurements.

The Fluke 943-27 is a compact yet powerful multimeter that excels in providing precise voltage and current readings. It is equipped with a large, backlit display that ensures visibility in low-light environments. The device supports a wide range of testing parameters, including AC and DC voltage, resistance, continuity, and capacitance measurements, making it invaluable for troubleshooting electrical circuits.

On the other hand, the Fluke 943-227-15 offers additional capabilities, including advanced data logging features. This multimeter allows users to record and analyze measurements over time, which is particularly useful for identifying intermittent issues in electrical systems. Its connectivity options enable seamless data transfer to a computer or mobile device, facilitating easy documentation and reporting.

Both models illustrate a robust construction built to endure tough working conditions. They meet stringent safety standards, which is critical for protecting users from electrical hazards. The ergonomic design ensures comfort during prolonged use, and features like overmolding enhance grip and durability.

One of the standout technologies in these multimeters is Fluke’s True-RMS measurement capability. This feature ensures accurate readings of non-linear loads, which are common in modern electrical systems with variable frequency drives and other electronic devices. Additionally, the built-in low-pass filter technology reduces noise in measurements, ensuring precision even in environments with significant electrical interference.

The Fluke 943-27 and 943-227-15 are also designed to be user-friendly. They feature intuitive controls and a straightforward user interface, allowing technicians to navigate functions effortlessly. The ability to perform automatic ranging simplifies measurements, eliminating the potential for errors when setting the range manually.

In conclusion, the Fluke 943-27 and 943-227-15 represent essential tools for electrical technicians who require versatility, accuracy, and durability in their testing equipment. With advanced features, reliable technologies, and a user-centric design, these multimeters not only meet but exceed the expectations of professionals in the field.
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