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Table of Contents
Related Manuals for norbar TST 10
Summarization of Contents
Section 1: Introduction
Scope of Service Manual
Details the service, calibration, and upkeep of Norbar TST, TTT, and TTL instruments.
Instrument Hidden Features Access
Explains how to access hidden features for instrument setup and calibration using specific key presses.
Manual Limitations and Exclusions
Details information not included in the manual, such as circuit details and software specifics.
Repackaging for Shipping and Transit
Provides guidance on using quality packaging material for instrument transport and returning items for service.
Disposal and Recycling Considerations
Lists components and their materials for recycling purposes.
Common Abbreviations Glossary
Defines common abbreviations used throughout the service manual.
Section 2: Testing Procedures
Scope of Testing Section
Details tests for TST, TTT & TTL instruments to ensure they are working, without opening the case.
Tests to Complete for Instrument Functionality
Outlines tests including Visual Inspection, Power Supply, Inputs, Menus, and Outputs.
Measure Mode Testing Procedures
Details checks for stable displayed values, zeroing, torque direction, and mode operation.
Serial Port Data Output Testing
Verifies data transmission via serial port with 'PRINT' and 'NO PRINT' settings.
Unit Selection and Conversion Testing
Checks the functionality of the SELECT UNITS button for converting displayed measurement units.
Overrange Functionality Test
Confirms overrange occurs at 120% of full scale and produces an audible 'bleep'.
Section 3: Instrument Calibration Check
Scope of Instrument Calibration Check
Details the method for checking the Norbar TST, TTT & TTL instrument calibration using a DVM.
Equipment Required for Calibration
Lists required items including Digital Voltmeters and a Voltage Test Fixture.
Calibration Environmental and Setup Considerations
Details ambient conditions, warm-up times, battery charge, and lead length for calibration.
Instrument Calibration Check Procedure
Step-by-step guide for connecting, setting instrument calibrate mode, and performing checks.
Calibration Check in TRACK Mode
Guidance on using TRACK mode for 'as found' results and setting voltage excitation compensation.
Setting Instrument Zero for Calibration
Procedure for setting the instrument zero using the test fixture and 'ZERO' button.
Setting Instrument Full Scale
Procedure for setting the instrument's full scale using the test fixture and '#' key.
Calibration Acceptance Bleep Indicator
Explains that instrument bleeps indicate calibration not accepted due to input voltage outside range.
Transducer Calibration Directionality
Details how recalibrating one direction can wipe the figure for the other direction.
Changing Display Resolution Settings
Explains how to change display resolution options for different transducer capacities.
Customer Resolution Setting Advice
Advises returning the instrument with the same resolution setting as received, or not changing it.
Voltage Excitation Compensation
Explains how to compensate for slight errors in the 5V excitation voltage.
Voltage Not Accepted Error Condition
Details the voltage range (4.99-5.01V) for acceptance and when to return to Norbar.
Section 4: Transducer Calibration
Scope of Transducer Calibration
Explains how to calibrate SMART transducers, both external and internal (TST).
Equipment Required for Transducer Calibration
Lists required items including the instrument, calibration beams, weights, and transducer lead.
Transducer Calibration Considerations
Details ambient conditions, warm-up times, and battery charge for transducer calibration.
As Found / As Left Calibration Strategy
Recommends completing 'AS FOUND' results first, then adjusting and taking 'AS LEFT' results if needed.
Transducer Calibration Procedure Steps
Provides a simplified procedure for calibrating all torque transducers.
Performing 'AS LEFT' Transducer Calibration
Details using the Calibrate Transducer mode to change calibration, entering password and parameters.
Calibration Not Accepted Error
Explains that a bleep signifies calibration failure due to mV/V input being outside the acceptable range.
Transducer Calibration Directionality
Clarifies that calibrating one direction may erase the calibration for the opposite direction.
Section 5: Instrument Operation
Scope of Operation Section
Explains instrument operation not covered in the operator's handbook.
General Instrument Description
Describes the function of the external power supply, front panel, and transducer signal processing.
Setting and Resetting Stored Data
Details managing instrument and transducer data, including recording, re-initializing, and setup options.
Data Recording Before Changes
Advises recording all data, including model and serial numbers, before making changes.
Re-initializing the Instrument
Explains re-initialization resets software settings to default, impacting calibration.
Setting Up External Transducers
Details setting up external transducers, including selection button states and entering mV/V values.
Complete Transducer Reset Procedure
Recommends 'Uninitialize external transducer' before a full reset to ensure no old data remains.
Setting Up Internal Transducers
Describes setting up internal transducers, specifically for TST, requiring 'INT' selection and mV/V entry.
Uninitializing External Transducers
Explains the use of this feature for resetting external transducers before re-use.
Removing Linearised Transducer Constants
Advises using 'Uninitialize external transducer' to remove constants when reverting to mV/V.
Additional Special Features
Details features not in the handbook, such as power down time and holding the display logo.
Power Down Time Setting
Explains setting power down time in seconds or minutes to reduce instrument testing time.
Holding the Display Logo
Describes how to hold the display logo by pressing a specific key on power up.
Voltage Excitation Compensation Feature
Explains how to use and calibrate voltage excitation compensation for accurate readings.
Limits Off Signal Functionality
Details the 'Limits Off' signal available on PAD 11 for external equipment status indication.
Limits Off Signal During Power Down
Advises disabling the power down feature when using the limits off signal for consistent operation.
Transducer Linearization Details
Explains transducer linearization using a 2nd degree polynomial (T = a + bR + cR2) and calibration methods.
Anticlockwise Polynomial Entry
Instructs on entering anticlockwise polynomial 'b' values as positive numbers, and other values exactly.
Incorrect Linearization Data Handling
Describes handling 'Error 64274' and ensuring correct constant values, especially for 'b'.
Recalibrating Transducers on Instruments
Explains instrument capabilities for recalibrating mV/V figures and how polynomial constants are handled.
Removing Linearised Transducer Feature
Recommends using 'UNINITIALISE EXTERNAL TRANSDUCER' to remove linearization constants.
Transducer Classification Verification
Notes that using linearised constants typically results in the same classification as the original mV/V certificate.
Section 6: Repair Procedures
Scope of Repair Section
Explains how to repair the TST / TTT / TTL instruments.
Replaceable Parts Information
Discusses availability of parts, importance of matching components, and non-serviceable items.
Removing the Front Panel
Details the procedure for removing the front panel using a hex key and care with wires.
Electrostatic Discharge (ESD) Precautions
Highlights the need for ESD-safe workstations and precautions due to sensitive integrated circuits.
Internal Settings Adjustments
Describes adjusting internal potentiometers and switch settings, focusing on setting instrument zero.
Setting Instrument Zero Adjustment
Details the procedure for adjusting the zero potentiometer (RV1) to set the correct instrument zero.
Transducer Resolution Adjustment
Refers to Section 3 for changing resolution if the display does not show enough digits.
Setting Display Contrast Adjustment
Explains adjusting the contrast potentiometer (RV2) on the PCB for new displays.
SW1 Switch Settings for Programming
Describes the function of SW1 switches for opening the RS232 for programming.
Internal Connections and Wiring
Provides tables detailing PAD connections from the front panel to TST, TTT, and TTL connector PCBs.
CONN 3: Connector PCB Pinouts
Details the IDC pin functions connecting to the connector PCB for various interfaces.
External Connectors and Pinouts
Lists pin connections for transducer, serial port, and ancillary interfaces.
Error and Warning Codes
Lists error and warning numbers with their messages and comments for troubleshooting.
Section 7: Parts List
Scope of Parts List
Lists items used in the manufacture of TST, TTT, and TTL instruments.
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