Polar Instruments TONEOHM 950 Manuals

Manuals and User Guides for Polar Instruments TONEOHM 950. We have 2 Polar Instruments TONEOHM 950 manuals available for free PDF download: Service Manual, Operator's Manual

Polar Instruments TONEOHM 950 Service Manual

Polar Instruments TONEOHM 950 Service Manual (60 pages)

Brand: Polar Instruments | Category: Measuring Instruments | Size: 0 MB

Declarations

6
Safety

7
- Grounding
  7
- Power Supply
  7
- Operation
  8
- Caution
  8
  - Electrical Isolation
    8
  - Static Sensitive Devices
    8
Specifications

9
- Environmental Operating Conditions
  10
  - Power Requirements
    10
  - Fuses
    10
  - Physical Characteristics (Excluding Accessories)
    10
- Symbols
  11
- Accessories
  11
  - Standard Accessories
    11
  - Optional Accessories
    11
  - Table of Contents
    12
Section 1 Performance Check

14
- Maintenance and Calibration of Instruments
  14
- Performance Check
  15
  - Equipment Required
    15
  - Procedure
    15
Section 2 - Adjustment Procedure

18
- Adjustment Procedure
  18
  - Equipment Required
    18
  - Display Calibration
    18
  - A2D Calibration
    18
  - Resistance Calibration
    18
  - Current Range Adjustment
    19
  - Current Offset Calibration - Version 8 Firmware and above
    19
  - Current Trace
    19
  - Plane Shorts
    20
Section 3 - Circuit Description

22
- Toneohm 950 Theory of Operation
  22
  - Main Operating Modes
    23
    
    Track Resistance
    23
    
    Track Current
    23
    
    Trace
    23
    
    Track Voltage
    23
    
    Plane Shorts
    23
  - Detailed Theory of Operation
    24
    
    Microvolt Amplifier
    24
    
    Trace Amplifier
    24
    
    Current Source
    24
    
    Plane Amplifier and Vector Discriminator
    24
    
    Vectored Plane Stimulus
    25
    
    Drive Source
    26
    
    Tone Generator
    26
    
    A2D2A
    26
    
    Power Supply
    26
    
    Microprocessor
    27
    
    Front Panel (Schematics 1 and 2)
    27
Section 4 - Dismantling Instructions

28
- Removing the Cover
  28
Section 5 - Line Voltage and Fuse Changing

30
- Line Voltage Selection and Fuse Changing
  30
  - Changing the Line Voltage Setting
    30
Section 6- Fault Diagnosis

32
- Troubleshooting Hints
  32
Section 7 - Maintenance and Cleaning

34
- Cleaning
  34
- Technical Support
  34
- Instrument Repair
  34
Section 8 - Replacement Parts

36
- Front Panel Kit
  37
- Main Board Kit
  38
- Mechanical Kit
  42
Section 9 - Schematic Diagrams

44

Polar Instruments TONEOHM 950 Operator's Manual (45 pages)

Brand: Polar Instruments | Category: Measuring Instruments | Size: 0 MB

Declarations
4
Safety
5
- Warning
  5
- Power Supply
  6
- Caution
  6
  - Electrical Isolation
    6
Specifications
7
- Environmental Operating Conditions
  8
  - Power Requirements
    8
  - Physical Characteristics (Excluding Accessories)
    8
- Symbols
  8
- Accessories
  9
  - Standard Accessories
    9
  - Optional Accessories
    9
  - Table of Contents
    10
Section 1 Introduction
13
- Introduction
  13
  - TONEOHM 950 Operating Modes
    13
Section 2 - Installation and Set up
15
- Preparation for Use
  15
  - Unpacking
    15
  - Connecting the TONEOHM 950 to a Power Supply
    15
  - Self Test
    16
Section 3 - Description
17
- 3.1 Connectors and Probes
  17
  - Plane Probe
    17
  - Current Trace Probe and Drive Source Leads
    17
  - Needle Probes
    17
  - Plane Stimulus Leads
    17
  - Headphone Socket
    17
  - 3.2 Indicators
    18
    
    Drive Source LED
    18
    
    Liquid Crystal Display
    18
    
    Plane Shorts Direction Arrows
    18
    
    Probes Reversed LED
    18
    
    Uncalibrated LED
    18
  - 3.3 Controls
    18
    
    Drive Source
    18
    
    Volume
    18
  - 3.4 Ranges
    19
    
    Track Current
    19
    
    Track Resistance
    19
Section 4 - Operation
21
- Locating Faults with the Toneohm 950
  21
  - 4.1 Range Selection
    21
  - 4.2 (Low Resistance) Shorts
    22
    
    Example - Low Resistance Short
    22
  - Plane Shorts
    23
    
    Causes of Shorts on Multi-Layer Boards
    24
    
    Connection
    24
    
    Operation (Single Short)
    25
    
    Sensitivity Adjustment
    25
    
    High Resistance Shorts
    26
    
    Multiple Shorts
    27
    
    Non-Rectangular Boards
    27
    
    Segmented Planes
    27
  - 4.4 Track Current Measurement
    28
    
    Excessive VCC Loads
    30
    
    Example - Excessive VCC Load
    31
    
    Example - Multiple Current Paths
    32
  - Current Tracing (Non-Contact)
    33
  - Locating Faults Using TRACE
    33
    
    Connection and Sensitivity Adjustment
    33
    
    Operation
    34
    
    Bus Faults (Stuck Nodes)
    35
    
    Edge Connectors
    36
    
    Faulty Decoupling Capacitors
    37
  - Track Voltage Measurement
    38
    
    Example - Excessive VCC Loads
    39
Section 5 - Maintenance and Cleaning
41
- Calibration Requirements
  41
- Plane Stimulus Protection Fuses
  41
- Cleaning
  41
- Technical Support
  41
Section 6 - Application Note
43
- Question about Plane Shorts
  43

Polar Instruments Categories

Test Equipment Measuring Instruments Industrial Equipment Laboratory Equipment

More Polar Instruments Manuals

Polar Instruments TONEOHM 950 Manuals

Polar Instruments TONEOHM 950 Service Manual (60 pages)

Table of Contents

Declarations

Safety

Specifications

Section 1 Performance Check

Section 2 - Adjustment Procedure

Section 3 - Circuit Description

Section 4 - Dismantling Instructions

Section 5 - Line Voltage and Fuse Changing

Section 6- Fault Diagnosis

Section 7 - Maintenance and Cleaning

Section 8 - Replacement Parts

Section 9 - Schematic Diagrams

Polar Instruments TONEOHM 950 Operator's Manual (45 pages)

Table of Contents

Related Products

Polar Instruments Categories