Valhalla Scientific 4300C Manuals

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Valhalla Scientific 4300C Operation Manual

Valhalla Scientific 4300C Operation Manual (111 pages)

Programmable Digital µ-Ohmmeter

Brand: Valhalla Scientific | Category: Measuring Instruments | Size: 3.27 MB

Table of Contents

Document History
4
Safety Symbols
5
Table of Contents
8
Chapter 1 Inspection & Installation

14
- Introduction
  14
- Initial Inspection
  15
- Figure 1 - Rear Panel Configuration
  15
- Setting the Line Voltage
  16
- Fuse Selection
  16
- Rack Mounting
  17
- Figure 2 - Rack Mount Kit
  17
- Safety Precautions
  18
- Standard Measurement Mode Specifications
  20
- Temperature Compensator Mode Specifications
  20
Chapter 10 Addendums

20
Chapter 11 Parts List

20
Chapter 12 Schematics

20
- Table 1 - Ranges Parameters and Accuracies
  20
- Table 2 - Temperature Compensation Mode Accuracy
  20
Chapter 2 Specifications

20
- General Specifications
  21
- Environmental
  21
- Power Requirements
  21
- Physical
  21
Chapter 3 Getting Started

22
- Front Panel
  22
  - On/Off Switch
    22
  - Figure 3 - Front Panel Layout
    22
  - Display
    23
  - Range Selection and Test Current Key
    23
    
    Range Selection
    23
    
    Figure 4 - Display Windows
    23
    
    Test Current Key
    24
  - Function/Numerical Keys
    24
  - Figure 6 - Ohms Setting
    24
  - Figure 7 - Test Current
    24
  - Table 4 - Function/Numerical Keys Description
    25
  - TC Mode Key and Sensor Receptacle
    26
  - HLC Leds
    26
  - Figure 10 - HLC Leds
    26
  - Cable Disconnect Status Indicators
    27
  - Charging Inductor Mode
    27
  - Source and Sense Binding Post
    27
  - Figure 12 - Binding Post
    27
  - Figure 13 - Banana Plugs to Binding Post
    28
- Rear Panel
  29
  - Line Voltage Switch
    29
  - Figure 14 - 4300C Rear Panel
    29
  - Fuse Holder
    30
  - Power Connector
    30
  - HLC Relay Terminal
    30
  - Figure 15 - HI-LO Comparator Relay Pins
    30
  - RS-232 Connector
    31
  - Table 5 - RS-232 Pin out
    31
- Applying Power
  32
- Power -O N Default Settings
  32
- Table 6 - Power-Up Defaults
  32
- Figure 17 - Display
  32
- Connecting a Load to the 4300C
  33
- Figure 18 - Alligator
  33
- Figure 20 - Dual
  34
- Figure 19 – Surface
  34
- Taking Standard Measurements
  35
  - Setting the Range
    35
  - Test Current
    35
  - Figure 21 - Voltage Setting
    35
  - Figure 22 - Ohms Setting
    35
  - Figure 23 - Test Current
    35
  - Charging Inductor Mode
    36
  - Cable Disconnect Status Indicators
    36
Chapter 4 Measurement Modes and Functions

38
- Standard Measurement Mode
  38
- Tcm" - Temperature Compensated Measurement Mode
  38
- Hlc" - H I -L O Comparator Mode
  43
  - HLC Relay Terminal
    43
  - Figure 25 - HLC Leds
    43
  - Figure 26 - HLC Relay Pins
    43
  - Setting the Limits
    44
  - Table 9 - HLC Truth Table
    44
  - Table 10 - HLC Default Limits
    44
  - Hlc on
    45
- Update Function
  45
- Run /Hold Function
  47
  - Run/Hold
    47
  - Run/Pkhi
    47
  - Run/Pklo
    47
  - Configuring the Run/Hold Function
    47
  - Figure 27 - Display Function Window
    47
- Print /Log Function
  48
  - Print
    48
  - Log
    48
  - Log2
    48
  - Configuring the Print Button Function
    49
- View Function
  50
  - Using the View Function
    50
Chapter 5 Optional Features and Accessories

52
- Options
  52
  - BCD: Data Output
    52
  - Gpib
    52
  - Usb
    52
- Accessories
  52
- Test Leads
  53
Chapter 6 Remote Operations

56
- Ieee Interface
  56
- The
  56
  - Urpose of Ieee Standard 488
    56
- Definitions
  57
- Bus Restrictions
  58
- Detailed Descriptions of Bus Operations
  59
- Table 12 - ASCII Character Codes
  60
- Setting the Ieee Address
  62
- Remote and Local States
  63
  - Local State
    63
  - Remote State
    63
- Reading the Display Data
  63
- 4300C Command Set for Gpib
  65
  - Voltage Range
    65
  - Test Current Range
    66
  - Srq's and Serial Polls
    66
  - Output Data Terminator
    67
  - Test Current Control
    67
  - Display Hold
    67
  - Temperature Compensation
    67
  - Configuration Status Query
    68
  - Table 13 - IEEE
    69
- Interface
  70
- Connecting the 4300C Via Rs232 Interface
  70
- Input and Output Queue
  72
- Commands and Syntax
  72
  - RS232 Message Terminators
    72
  - Entering Commands
    72
  - Command Characters
    72
  - Combining Commands
    72
  - Synopsis of Commands
    72
- Details of Command Reference
  73
- Bcd Interface
  90
- Eneral
  90
- Bcd Pin Assignments
  90
  - Data
    90
  - Table 15 - BCD Measurement Data
    90
  - Ranges
    91
  - Overload - Pin 12
    91
  - Pin Assignment
    91
  - Table 16 - BCD Range Data
    91
  - Table 17 - BCD Pin Assignment Reference Table
    91
  - Bcd P in a Ssignments
    91
Chapter 7 Theory of Operations

92
- 4-Wire Configuration
  92
- Figure 38 - 4-Wire Configuration
  92
- General Description of Circuits
  93
- Figure 39 - 4300C Block Diagram
  93
- Detailed
  96
  - Descriptions
    96
  - Current Source
    96
    
    Reference
    96
    
    Error Amplifier
    96
    
    Figure 40 - Current Source Block Diagram
    96
    
    S Chematics
    96
    
    Output Stage
    97
    
    Range Switching
    97
    
    Protection Circuitry
    97
    
    Power Supply
    97
    
    Charging Inductor Mode
    97
  - Micro-Controller Board
    98
    
    Micro-Controller
    98
    
    Over-Voltage Protection
    98
    
    Tcm
    98
    
    Figure 41 - Μ-Controller Block Diagram
    98
    
    S Chematics
    98
    
    2.5V Reference
    99
    
    RS-232/Display Switch and RS 232 Driver/Receiver
    99
- Troubleshooting
  99
  - Localizing the Problem
    99
  - S Chematics
    99
  - Component Replacement
    100
Chapter 8 Routine Maintenance

102
- General
  102
- Required Test Equipment
  102
- Pre -Calibration Procedure
  102
- 4300C Calibration Procedure
  103
  - Sense Calibration
    103
  - Current Source Calibration
    104
    
    Reference Adjustment
    104
    
    10 Amp Adjustment
    105
    
    10Ma Adjustment
    105
  - TCM Calibration
    106
  - Figure 42 - Drawing № 4300C-700
    107
Chapter 9 Special Procedures

108
- General
  108
- Onnections and
  108
  - Time
    108
- Noisy Readings
  109
- Disconnecting the Cables
  110

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Valhalla Scientific 4300C Operation Manual

Valhalla Scientific 4300C Operation Manual (84 pages)

Programmable Micro-Ohmmeter

Brand: Valhalla Scientific | Category: Measuring Instruments | Size: 2.21 MB

Table of Contents

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