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General| Brand | METRON |
|---|---|
| Model | QA-90 |
| Category | Measuring Instruments |
| Language | English |
Details the advanced features and capabilities of the QA-90 safety testing equipment.
Outlines the technical specifications including measurement ranges, resolution, and accuracy.
Provides general information on operating temperature, display, data input/output, and power.
Guides users on inspecting the equipment upon receipt and procedures for returning it.
Details the steps for connecting the QA-90 to peripherals like printers and PCs.
Explains the correct procedure for powering the QA-90 on and off.
Describes the PRO-Soft QA-90 software for test automation and data management.
Details the functions of front and rear panel switches, ports, and connectors.
Explains the function of each key on the QA-90 keypad for data entry and navigation.
Describes how to use the bar code reader for inputting instrument and patient lead data.
Explains how to navigate menus and use function keys (F1-F7) for control.
Illustrates the startup screen, main menu, and other display messages shown during operation.
Provides procedures for performing measurements on multiple modules in manual test mode.
Explains how to store operator, establishment, and calibration parameters in flash memory.
Details the step-by-step process for upgrading the QA-90 firmware.
Provides instructions on how to clean the exterior of the QA-90 unit safely.
Explains how to perform self-calibration of test leads for accurate measurements.
Guides connection procedures for instruments lacking patient inputs.
Details connection steps for instruments with patient inputs (Types B, BF, CF).
Describes the procedure for testing the power cable's earth connection.
Explains how to perform current measurements using dual leads.
Details how to measure voltage potentials using dual leads.
Explains how to measure protective earth resistance using dual leads.
Guides on connecting auxiliary power sources or isolating transformers for testing.
Lists the necessary test equipment for QA-90 control and calibration.
Outlines startup preparation and initial adjustments before testing or calibration.
Details calibration steps for various leakage currents and measurements.
Covers calibration for the bar code reader and automatic test sequences.
Explains the purpose and adjustment of various calibration constants.
Explains the basic operational principles and standards compliance of the QA-90.
Details the architecture and function of the QA-90's measuring system.
Describes the microprocessor system, CPU, and interfaces controlling the QA-90.
Lists the component parts for the CPU, front board, and measuring board.
Explains equipment classifications (0, 1, 2, 3) and applied part symbols (B, BF, CF).
Details tests for mains-powered equipment including continuity, insulation resistance, and leakage currents.
Outlines tests for internally powered equipment, including enclosure and patient leakage currents.
Describes system-level enclosure leakage current tests under normal and fault conditions.
Covers replacement leakage current tests according to VDE 0751-1 standard.
Shows the schematic for mains and equipment under test connections.
Diagram showing component placement on the measuring board, layer 1.
Diagram showing component placement on the measuring board, layer 2.
Schematic diagram of the measuring system, part 1, focusing on preparation.
Schematic diagram of the measuring system, part 2, covering the high voltage interface.
Schematic diagram of the measuring system, part 3, detailing high voltage logic.
Schematic diagram of the measuring system, part 4, showing high voltage drives.
Schematic diagram of the measuring system, part 5, illustrating the applied part matrix.
Schematic diagram of the measuring system, part 6, showing the measurement matrix.
Schematic diagram of the measuring system, part 7, for program amplifier and lowpass.
Schematic diagram of the measuring system, part 8, detailing relay drivers.
Diagram showing component placement on the microprocessor board.
Diagram showing component placement on the keypad board.
Schematic diagram of the microprocessor system, part 1, for QA-90.
Schematic diagram of the microprocessor system, part 2, for the integrated keypad.
Schematic diagram of the microprocessor system, part 3, focusing on the CPU.
Schematic diagram of the microprocessor system, part 4, also focusing on the CPU.
Schematic diagram of the microprocessor system, part 5, for printer and display interfaces.
Schematic diagram of the microprocessor system, part 6, for series and keypad interfaces.
