Contents
Main
FCC Notice
Declaration of Conformity
Table of Contents
Table of Contents Chapter One, Introduction
Chapter Two, Installation & Initial Checks
Chapter Three, Technical Description
Chapter Four, Front and Rear Panels
Chapter Five, Front Panel Operation
Chapter Six, Computer Operation
Appendix A, Specifications
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Introduction
Chapter 1
1.1 How to Use This Manual
Chapter 1, INTRODUCTION
1.2 What is a Lock-in Amplifier?
Chapter 1, INTRODUCTION
1.3 Key Specifications and Benefits
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Installation & Initial Checks
Chapter 2
2.1 Installation
2.1.01 Introduction
2.1.02 Rack Mounting
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2.2 Initial Checks
2.2.01 Introduction
2.2.02 Procedure
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Technical Description
Chapter 3
3.1 Introduction
3.2 Principles of Operation
3.2.01 Block Diagram
3.2.02 Signal-Channel Inputs
3.2.03 Line Frequency Rejection Filter
3.2.04 AC Gain
3.2.05 Anti-Aliasing Filter
3.2.06 Main Analog to Digital Converter
3.2.07 Reference Channel DSP
3.2.08 Internal Oscillator
3.2.09 Demodulator DSP
3.2.10 Output Processor
3.2.11 Main Microprocessor
3.3 Accuracy
3.3.01 Absolute Accuracy Specifications
3.3.02 Relative Accuracy
3.4 Full-Scale Sensitivity and AC Gain Control
3.5 Dynamic Reserve
3.6 System Updates and Reference Frequency Changes
3.7 Reference Phase and Phase Shifter
3.8 Output Channel Filters
3.8.01 Slope
3.8.02 Time Constants and Synchronization
3.8.03 Output Offset and Expand
3.9 Use of Magnitude and Signal Phase Outputs
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3.10 Noise Measurements
3.11 Power-up Defaults
3.12 Auto Functions
3.12.01 Introduction
3.12.02 Auto-Sensitivity
3.12.03 Auto-Phase
3.12.04 Auto-Offset
3.12.05 Auto-Measure
3.12.06 Default Setting
Front and Rear Panels
Chapter 4
4.1 Front Panel
4.1.01 A and B/I Signal Input Connectors
4.1.02 OSC OUT Connector
4.1.03 REF IN Connector
4.1.04 Left-hand LCD Display Panel
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4.1.05 MENU Key
4.1.06 90 Key
4.1.07 SET Key
4.1.08 Right-hand LCD Display Panel
4.2 Rear Panel
4.2.01 Line Power Switch
4.2.02 Line Power Input Assembly
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Front Panel Operation
Chapter 5
5.1 Introduction
5.2 Setup Menu Mode
5.2.01 Input Setup Menu
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5.2.02 Reference Setup Menu
ON
OFF
5.2.03 Output Setup Menu
Expand
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PHASE1
PHASE2
NOISE
RATIO
5.2.04 Control Options Menu
Linefilt
AC Gain
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5.2.05 Miscellaneous Options Menu
5.2.06 RS232 Setup 1 Menu
5.2.07 RS232 Setup 2 Menu
5.2.08 RS232 Setup 3 Menu
Address
Information only
5.2.09 GPIB Setup 1 Menu
5.2.10 GPIB Setup 2 Menu
SRQ Mask
Test echo
5.2.11 Digital Outputs Setup Menu
Decimal
5.2.12 Control Setup Menu
Default Setting
Sample rate
5.3 Auto Functions Menu
AUTO SEN
AUTO PHASE
AUTO OFFSET
AUTO MEASURE
5.4 Main Display Mode - Left-hand LCD
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5.5 Main Display Mode - Right-hand LCD
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5.6 Typical Lock-in Amplifier Experiment
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Computer Operation
Chapter 6
6.1 Introduction
6.2 Capabilities
6.2.01 General
6.3 RS232 and GPIB Operation
6.3.01 Introduction
6.3.02 RS232 Interface - General Features
6.3.03 Choice of Baud Rate
6.3.04 Choice of Number of Data Bits
6.3.05 Choice of Parity Check Option
6.3.06 Auxiliary RS232 Interface
6.3.07 GPIB Interface - General Features
6.3.08 Handshaking and Echoes
6.3.09 Terminators
6.3.10 Command Format
6.3.11 Delimiters
6.3.12 Compound Commands
6.3.13 Status Byte, Prompts and Overload Byte
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6.3.14 Service Requests
6.4 Command Descriptions
6.4.01 Signal Channel
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6.4.02 Reference Channel
6.4.03 Signal Channel Output Filters
6.4.04 Signal Channel Output Amplifiers
6.4.05 Instrument Outputs
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6.4.06 Internal Oscillator
6.4.07 Auxiliary Outputs
6.4.08 Auxiliary Inputs
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6.4.09 Output Data Curve Buffer
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6.4.10 Computer Interfaces (RS232 and GPIB)
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6.4.11 Instrument Identification
6.4.12 Front Panel
6.4.13 Default Setting
6.5 Programming Examples
6.5.01 Introduction
6.5.02 Basic Signal Recovery
6.5.03 Frequency Response Measurement
6.5.04 X and Y Output Curve Storage Measurement
6.5.05 Transient Recorder
6.5.06 Frequency Response Measurement using Curve Storage and Frequency Sweep
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Specifications
Appendix A
Measurement Modes
Displays
Signal Channel
Reference Channel
Demodulator and Output Processing
Oscillator
Auxiliary Inputs
Outputs
Data Storage
Interfaces
Power Requirements
General
Pinouts
Appendix B
B.1 RS232 Connector Pinout
B.2 Preamplifier Power Connector Pinout
Appendix B, PINOUTS
B.3 Digital Output Port Connector
Demonstration Programs
Appendix C
C.1 Simple Terminal Emulator
C.2 RS232 Control Program with Handshakes
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C.3 GPIB User Interface Program
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Cable Diagrams
Appendix D
D.1 RS232 Cable Diagrams
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Alphabetical Listing of Commands
Appendix E
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Default Settings
Appendix F
Default Setting Function
Appendix F, DEFAULT SETTINGS
Index
Index
Index-1
Index-2
Index-3
Index-4
Index-5
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WARRANTY
SHOULD YOUR EQUIPMENT REQUIRE SERVICE