Keithley 2750 Manuals

Manuals and User Guides for Keithley 2750. We have 3 Keithley 2750 manuals available for free PDF download: User Manual, Service Manual, Quick Start Manual

Keithley 2750 User Manual (452 pages)

Multimeter/Switch System

Brand: Keithley | Category: Switch | Size: 7.62 MB

Safety Precautions
4
Table of Contents
8
Getting Started

18
- General Information
  19
  - Contact Information
    19
  - Safety Symbols and Terms
    19
  - Inspection
    20
  - Options and Accessories
    20
- Model 2750 Features
  22
- Plug-In Switching Modules
  23
  - Pseudocards
    25
  - Identifying Installed Switching Modules
    25
- Front and Rear Panel Familiarization
  26
  - Front Panel Summary
    26
  - Rear Panel Summary
    29
- Rack Mounting
  30
- Power-Up
  31
  - Line Power Connection
    31
  - Line Frequency
    32
  - Setting Line Voltage and Replacing Fuse
    32
  - Power-Up Sequence
    33
  - Keyclick
    33
- Display
  34
  - Status and Error Messages
    34
  - Remote Programming - Display
    34
- Defaults and User Setups
  36
  - Saving and Restoring Setups
    37
  - Remote Programming - Default and User Setups
    41
- Remote Programming Information
  42
- Quick Start Exercises
  42
Closing and Opening Switching Module Channels

56
- Close/Open Overview
  57
- Switching Module Installation and Connections
  58
  - Module Installation
    58
  - Connections
    59
  - Pseudocards
    60
- Channel Assignments
  60
- System Channel Operation
  61
- Multiple Channel Operation
  69
- Identifying Installed Modules and Viewing Closed Channels
  82
  - CARD Menu
    82
  - Switching Module Queries (Remote Operation)
    84
- Relay Closure Count
  86
  - Reading Relay Closure Count
    87
  - Setting Count Update Interval
    87
- Model 7700 Switching Module
  88
  - Switching Module Capabilities
    88
  - Schematic Diagram
    89
Basic DMM Operation

92
- DMM Measurement Capabilities
  93
- High Energy Circuit Safety Precautions
  94
- Performance Considerations
  95
  - Warm-Up
    95
  - Autozero
    95
  - LSYNC (Line Cycle Synchronization)
    96
  - Remote Programming - Autozero and LSYNC
    97
- Channel List Parameter (<Clist>)
  98
- Voltage Measurements (DCV and ACV)
  99
  - DCV Input Divider
    99
  - Connections
    99
  - Volts Measurement Procedure
    102
  - Crest Factor
    103
  - Low Level Considerations
    103
- Current Measurements (DCI and ACI)
  105
  - Connections
    105
  - Amps Measurement Procedure
    106
  - AMPS Fuse Replacement (Front Panel AMPS Input)
    107
- Resistance Measurements (Ω2 and Ω4)
  107
  - Connections
    108
  - Standard Resistance Measurements
    110
  - Offset-Compensated Ohms
    111
  - Dry Circuit Ohms (DRYCKT)
    113
- Temperature Measurements
  116
  - Thermocouples
    116
  - Thermistors
    118
  - 4-Wire Rtds
    119
  - Connections
    119
  - Temperature Measurement Configuration
    125
  - Temperature Measurement Procedure
    127
- Frequency and Period Measurements
  128
  - Trigger Level
    128
  - Gate Time
    128
  - Connections
    129
  - Frequency and Period Measurement Procedure
    130
- Continuity Testing
  131
  - Connections
    131
  - Continuity Testing Procedure
    132
- Remote Programming for Basic Measurements
  133
  - Basic Measurement Commands
    133
  - Basic Measurement Programming Examples
    139
- Measurement Queries
  140
  - Fetch
    140
  - Read
    141
  - Measure[:<Function>]
    141
  - [:Sense[1]]:Data:fresh
    142
  - [:Sense[1]]:Data[:Latest]
    142
  - Examples
    143
Range, Digits, Rate, Bandwidth, and Filter Range

146
- Measurement Ranges and Maximum Readings
  147
- Manual Ranging
  147
- Auto Ranging
  148
- Scanning
  148
- Remote Programming - Range
  149
- Digits
  150
  - Scanning
    150
  - Remote Programming - Digits
    151
- Rate and Bandwidth
  153
  - Rate
    153
  - Bandwidth
    155
  - Scanning
    155
  - Remote Programming - Rate and Bandwidth
    156
- Filter
  159
  - Filter Characteristics
    159
  - Remote Programming - Filter
    164
Relative, Math, Ratio, Channel Average, and Db

168
- Relative
  169
  - Basic Operation
    169
  - Remote Programming - Rel
    171
- Math
  175
  - MX+B
    176
  - Percent
    177
  - Reciprocal (1/X)
    178
  - Basic Operation
    179
  - Remote Programming - Math
    180
- Ratio and Channel Average
  183
  - Basic Operation
    184
  - Remote Programming - Ratio and Channel Average
    186
  - Remote Programming - Db
    188
Buffer

190
- Buffer Overview
  191
- Front Panel Buffer
  191
  - Auto Clear
    191
  - Timestamps
    192
  - Storing Readings
    194
  - Recalling Readings
    195
- Remote Programming - Buffer
  197
  - Buffer Commands
    197
  - Programming Example
    203
Scanning

206
- Scanning Fundamentals
  207
  - Channel Assignments
    208
  - Sequential and Non-Sequential Scans
    208
  - Scan Process
    208
  - Trigger Models
    209
- Scan Configuration
  216
  - Scan Reset
    218
  - Simple Scan
    218
  - Advanced Scan
    219
  - Setting Delay
    222
  - Monitor Channel
    223
  - Auto Channel Configuration
    224
  - Saving Setup
    225
  - Auto Scan
    225
- Scan Operation
  226
  - Basic Scan
    226
    
    Manual/External Trigger Scan
    228
    
    Monitor Scan (Analog Trigger)
    229
  - Remote Programming - Scanning
    231
    
    Trigger Model
    231
    
    Channel Setup
    232
    
    Buffer
    232
    
    Scanning Commands
    232
    
    Scanning Programming Example
    237
  - Scanning Examples
    238
    
    External Trigger Scan
    238
    
    Monitor Scan
    241
Triggering

244
- Trigger Model
  245
  - Idle
    245
  - Control Source and Event Detection
    246
  - Delay (Auto or Manual)
    246
  - Device Action
    248
  - Output Trigger
    248
- External Triggering
  249
  - Digital I/O
    249
  - External Trigger
    250
  - Voltmeter Complete
    250
  - External Triggering Example
    251
  - External Triggering with BNC Connections
    254
- Remote Programming - Triggering
  255
  - Trigger Model (Remote Operation)
    255
  - Trigger Model Operation
    258
  - Triggering Commands
    259
  - Programming Example
    260
Limits and Digital I/O

262
- Limits
  263
  - Scanning
    265
  - Basic Limits Operation
    265
- Digital I/O
  266
  - Digital Input (Trigger Link Input)
    266
  - Digital Outputs
    267
  - Setting Digital Output
    272
  - Scanning
    273
- Remote Programing - Limits and Digital Output
  274
  - Limits and Digital Output Commands
    274
  - Limits and Digital Outputs Programming Example
    276
- Application - Sorting Resistors
  277
  - Limits
    277
  - Digital Outputs
    279
Remote Operations

280
- Operation Enhancements
  281
  - Pseudocards
    281
  - Autozero
    281
  - Db Calculation
    281
  - Separate Function Setups
    282
  - DCV Input Divider
    282
  - Multiple Channel Operation
    282
- GPIB Setup
  283
  - GPIB Standards
    283
  - Selecting GPIB and Setting Primary Address
    283
  - GPIB Connections
    284
- General Bus Commands
  286
  - REN (Remote Enable)
    287
  - IFC (Interface Clear)
    287
  - LLO (Local Lockout)
    287
  - GTL (Go to Local)
    287
  - DCL (Device Clear)
    288
  - SDC (Selective Device Clear)
    288
  - GET (Group Execute Trigger)
    288
  - SPE, SPD (Serial Polling)
    288
- Front Panel GPIB Operation
  289
  - Error and Status Messages
    289
  - GPIB Status Indicators
    289
  - LOCAL Key
    290
- Programming Syntax
  290
  - Command Words
    290
  - Query Commands
    292
  - Case Sensitivity
    292
  - Long-Form and Short-Form Versions
    293
  - Short-Form Rules
    293
  - Program Messages
    294
  - Response Messages
    296
  - Message Exchange Protocol
    296
- RS-232 Interface Operation
  297
  - Sending and Receiving Data
    297
  - Baud Rate
    297
  - Signal Handshaking (Flow Control)
    298
  - Terminator
    298
  - Selecting and Configuring RS-232 Interface
    299
  - RS-232 Connections
    299
  - Error Messages
    301
Status Structure

302
- Overview
  303
  - Status Byte and SRQ
    303
  - Status Register Sets
    303
  - Queues
    303
- Clearing Registers and Queues
  305
- Programming and Reading Registers
  306
  - Programming Enable Registers
    306
  - Reading Registers
    307
- Status Byte and Service Request (SRQ)
  307
  - Status Byte Register
    308
  - Service Request Enable Register
    309
  - Serial Polling and SRQ
    309
  - Status Byte and Service Request Commands
    310
  - Serial Poll Programming Example
    310
- Status Register Sets
  312
  - Register Bit Descriptions
    312
  - Condition Registers
    319
  - Event Registers
    319
  - Event Enable Registers
    320
- Queues
  321
  - Output Queue
    321
  - Error Queue
    321
Common Commands

324
SCPI Signal Oriented Measurement Commands

332
- Configure:<Function> [<Rang>], [<Res>], [<Clist>]
  334
- Fetch
  336
- Read
  336
- Measure:<Function>? [<Rang>], [<Res>], [<Clist>]
  338
Format and Miscellaneous System Commands

340
- Format Commands
  341
  - Format[:Data] <Type>[,<Length>]
    341
  - Format:elements <Item List
    344
  - Format:border <Name
    345
- Miscellaneous System Commands
  346
  - System:preset
    346
  - System:version
    346
  - System:key <Nrf
    346
  - System:beeper[:State] <B
    347
SCPI Reference Tables

348
- Reference Tables
  349
- Model 7700 Connection Guide
  
  374
  - Card Configuration - Schematic
    375
  - Connections and Wiring
    377
    
    Screw Terminals
    378
    
    Wiring Procedure
    379
    
    Typical Connections
    380
    
    Connection Log
    383
- Status and Error Messages
  
  386
- Signal Processing Sequence and Data Flow
  
  395
  - Signal Processing Sequence
    395
    
    Basic Signal Processing
    395
    
    Signal Processing Using Instrument Features
    396
    
    Signal Processing Using Ratio or Ch Avg
    399
  - Data Flow (Remote Operation
    400
    
    Sense and Sample Buffer
    401
    
    [Sens[1]]:Data[:Latest]
    402
    
    [Sens[1]]:Data:fresh
    402
    
    Fetch
    402
    
    Read
    402
    
    Measure
    402
    
    Calc[1]:Data[Latest
    402
    
    Calc[1]:Data:fresh
    402
    
    Calc3:Lim1:Fail
    404
    
    Calc3:Lim2:Fail
    404
    
    Trace:data
    404
    
    Calc2:IMM
    405
    
    Calc2:Data
    405
    
    Continuous Measurement Mode
    405
    
    Scanning
    406
  - Measurement Considerations
    408
    
    Thermoelectric Potentials
    409
    
    Thermoelectric Generation
    410
    
    Minimizing Thermal Emfs
    411
    
    Source Resistance Noise
    412
    
    Magnetic Fields
    413
    
    Radio Frequency Interference
    413
    
    Ground Loops
    415
    
    Shielding
    416
    
    Meter Loading
    417
- Temperature Equations
  
  418
  - Thermocouple Equation
    419
  - Thermistor Equation
    423
  - RTD Equation
    425
- IEEE-488 Bus Overview
  
  428
  - Introduction
    429
  - Bus Description
    429
  - Bus Lines
    431
    
    Data Lines
    431
    
    Bus Management Lines
    432
    
    Handshake Lines
    432
  - Bus Commands
    433
    
    Uniline Commands
    435
    
    Universal Multiline Commands
    435
    
    Addressed Multiline Commands
    436
    
    Address Commands
    436
    
    Unaddress Commands
    436
    
    Common Commands
    437
    
    SCPI Commands
    437
    
    Command Codes
    438
    
    Typical Command Sequences
    439
    
    IEEE Command Groups
    440
  - Interface Function Codes
    441

Keithley 2750 Service Manual (179 pages)

Multimeter/Switch System

Brand: Keithley | Category: Multimeter | Size: 1.93 MB

Table of Contents

5
Troubleshooting

12
- 1 Performance Verification
  
  13
- 2 Calibration
  
  49
  - Introduction
    50
  - Environmental Conditions
    50
    
    Line Power
    50
    
    Warmup Period
    50
  - Calibration Considerations
    51
  - Calibration Code
    52
    
    Front Panel Calibration Code
    52
    
    Remote Calibration Code
    52
  - Comprehensive Calibration
    53
    
    Calibration Cycle
    53
    
    Recommended Equipment
    53
    
    Aborting Calibration
    54
    
    Front Panel Calibration
    54
    
    Remote Calibration
    62
  - Manufacturing Calibration
    68
    
    Extender Board Preparation
    68
    
    Recommended Test Equipment
    68
    
    Front Panel Manufacturing Calibration
    69
    
    Measuring Function Generator Signal Amplitude
    69
    
    Unlocking Manufacturing Calibration
    69
    
    Remote Manufacturing Calibration
    70
  - Model 7700 Calibration
    71
    
    Recommended Test Equipment
    71
    
    Extender Board Connections
    72
    
    Model 7700 Calibration
    72
- 3 Routine Maintenance
  
  75
  - Introduction
    76
  - Setting the Line Voltage and Replacing the Line Fuse
    76
  - Figure 3-1 Power Module
    77
  - Figure 3-2 AMPS Fuse
    78
  - Replacing the AMPS Fuse
    78
  - Figure 3-3 Model 7700 Amps Fuses
    79
  - Replacing Model 7700 Plug-In Module Amps Fuses
    79
  - Replacing Non-Volatile RAM Battery
    80
    
    Replace the Battery as Follows
    81
  - Plug-In Module Relay Closure Count
    82
    
    Closure Count Commands
    82
    
    Reading Relay Closure Count
    82
    
    Resetting Relay Closure Count
    83
    
    Setting Count Update Interval
    83
  - Rack Mounting
    84
    
    Rack Mount Kit
    84
    
    Rack Mount Procedure
    84
    
    Figure 3-4 Rack Preparation
    85
  - 4 Troubleshooting
    
    91
    
    Troubleshooting
    87
    
    Introduction
    88
    
    Repair Considerations
    88
    
    DISP Test
    89
    
    Front Panel Tests
    89
    
    KEY Test
    89
    
    Power-On Self-Test
    89
    
    Figure 4-1 Power Supply Block Diagram
    90
    
    Power Supply
    90
    
    Principles of Operation
    90
    
    Table 4-1 Power Supply Components
    91
    
    Display Board
    92
    
    Digital Circuitry
    93
    
    Analog Circuitry
    95
    
    Display Board Checks
    100
    
    Power Supply Checks
    100
    
    Table 4-2 Display Board Checks
    100
    
    Table 4-3 Power Supply Checks
    100
    
    Troubleshooting
    100
    
    Digital Circuitry Checks
    101
    
    Table 4-4 Digital Circuitry Checks
    101
    
    Analog Signal Switching States
    102
    
    Table 4-5 DCV Signal Switching
    102
    
    Table 4-6 ACV and FREQ Signal Switching
    103
    
    Table 4-7 2 Signal Switching
    105
    
    Table 4-8 4 Signal Switching
    105
    
    Table 4-11 4 Dry Circuit Reference Signal Switching
    107
    
    Table 4-12 DCA Signal Switching
    107
    
    Table 4-13 ACA Signal Switching
    107
    
    Table 4-14 DCV Signal Multiplexing and Gain
    108
    
    Table 4-15 ACV and ACA Signal Multiplexing and Gain
    108
    
    Table 4-16 DCA Signal Multiplexing and Gain
    108
    
    Table 4-17 2 Signal Multiplexing and Gain
    109
    
    Table 4-18 4 Signal Multiplexing and Gain
    109
    
    Table 4-19 4 Dry Circuit Signal Multiplexing and Gain
    109
    
    No Comm Link Error
    110
    
    Table 4-20 Switching Device Locations
    110
    
    Disassembly
    111
    
    Handling and Cleaning
    112
    
    Handling PC Boards
    112
    
    Introduction
    112
    
    Solder Repairs
    112
    
    Assembly Drawings
    113
    
    Static Sensitive Devices
    113
    
    Case Cover Removal
    114
    
    Disassembly Procedures
    114
    
    Motherboard Removal
    114
    
    Card Cage Removal
    115
    
    Front Panel Disassembly
    115
    
    Removing Power Components
    115
    
    Input Terminal Wire Connections
    116
    
    Instrument Reassembly
    116
    
    Power Module Wire Connections
    117
  - 5 Disassembly
    
    121
  - 6 Replaceable Parts
    
    121
    
    Replaceable Parts
    119
    
    Factory Service
    120
    
    Introduction
    120
    
    Ordering Information
    120
    
    Parts Lists
    120
    
    Component Layouts
    121
    
    Table 6-1 Model 2750 Motherboard Parts List
    121
    
    Table 6-5 Model 7700 Module Parts List
    133
    
    Accuracy and Optimization
    135
    
    Accuracy Calculations
    136
    
    Calculating AC Characteristics Accuracy
    136
    
    Calculating DC Characteristics Accuracy
    136
    
    Calculating Db Characteristics Accuracy
    137
    
    Calculating Dbm Characteristics Accuracy
    137
    
    AC Voltage and AC Current
    138
    
    Additional Derating Factors
    138
    
    DC Voltage, DC Current, and Resistance
    138
    
    Optimizing Measurement Accuracy
    138
    
    Temperature
    138
    
    AC Voltage and AC Current
    139
    
    DC Voltage, DC Current, and Resistance
    139
    
    Optimizing Measurement Speed
    139
    
    Temperature
    139
  - A Accuracy and Optimization
    
    148
  - B Calibration Reference
    
    148
    
    Calibration Reference
    141
    
    Command Summary
    142
    
    Introduction
    142
    
    Miscellaneous Calibration Commands
    144
    
    DC Calibration Commands
    148
    
    Table B-2 DC Calibration Commands
    148
    
    AC Calibration Commands
    153
    
    Manufacturing Calibration Commands
    155
    
    Model 7700 Calibration Commands
    156
    
    Error Summary
    161
    
    Remote Error Reporting
    161
    
    Table B-5 Calibration Errors
    161
    
    Error Queue
    164
    
    Detecting Calibration Step Completion
    165
    
    Generating an SRQ on Error
    165
    
    Status Byte EAV (Error Available) Bit
    165
    
    Using the *OPC? Query
    165
    
    Generating an SRQ on Calibration Complete
    166
    
    Using the *OPC Command
    166
    
    Calibration Program
    167
    
    Calibration Equipment
    168
    
    Computer Hardware Requirements
    168
    
    Introduction
    168
    
    Software Requirements
    168
    
    General Program Instructions
    169

Keithley 2750 Quick Start Manual (52 pages)

Brand: Keithley | Category: Data Loggers | Size: 1.76 MB

Table of Contents
9
Getting Started

10
- Introduction
  10
- Measure and Switching Capabilities
  10
- Front and Rear Panels (Mainframe)
  12
- Power-Up
  15
- Edit Keys
  15
- Factory Defaults
  16
- Communication Interfaces
  16
- Start-Up Software
  18
- Trigger and Return Readings
  18
Front Panel Input Connections

19
Basic Measurements

21
- Measure Volts, Amps and Ohms
  21
- Measure Temperature
  23
- Measure Frequency and Period
  25
- Testing Continuity
  26
Optimizing Performance

27
- Warm-Up
  27
- Display Resolution (Digits)
  27
- Measurement Speed (Rate)
  28
- Filter
  29
- Line Cycle Synchronization (Lsync)
  31
- Autozero
  32
- Math Operations
  
  32
  - Relative (Rel)
    33
  - Math MX+B
    34
    
    Percent
    35
    
    Reciprocal (1/X)
    35
  - Ratio and Channel Average
    36
Buffer

38
- Storing and Recalling Readings
  38
  - Storing Readings
    38
  - Recalling Readings (and Statistics)
    38
Model 7700 Switching Module

41
- Input Connections and Measurements
  42
  - 2-Wire Measurements
    43
- Channel Assignments
  45
- Closing and Opening Channels
  46
- Simple Scanning
  48

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Keithley 2750 Manuals

Keithley 2750 User Manual (452 pages)

Table of Contents

Getting Started

Closing and Opening Switching Module Channels

Basic DMM Operation

Range, Digits, Rate, Bandwidth, and Filter Range

Relative, Math, Ratio, Channel Average, and Db

Buffer

Scanning

Triggering

Limits and Digital I/O

Remote Operations

Status Structure

Common Commands

SCPI Signal Oriented Measurement Commands

Format and Miscellaneous System Commands

SCPI Reference Tables

Model 7700 Connection Guide

Status and Error Messages

Signal Processing Sequence and Data Flow

Temperature Equations

IEEE-488 Bus Overview

Keithley 2750 Service Manual (179 pages)

Table of Contents

Table of Contents

Troubleshooting

1 Performance Verification

2 Calibration

3 Routine Maintenance

4 Troubleshooting

5 Disassembly

6 Replaceable Parts

A Accuracy and Optimization

B Calibration Reference

Keithley 2750 Quick Start Manual (52 pages)

Table of Contents

Getting Started

Front Panel Input Connections

Basic Measurements

Optimizing Performance

Math Operations

Buffer

Model 7700 Switching Module

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