TABLE OF CONTENTS
1-1
GENERAL INFORMATION
Safety and Preparation for Use 1-3
Specifications 1-5
Abridged Command List 1-7
GETTING STARTED
Your First Measurements 2-1
The Basic Lock-in 2-3
X, Y, R and q 2-7
Outputs, Offsets and Expands 2-9
Storing and Recalling Setups 2-13
Aux Outputs and Inputs 2-15
GENERAL INFORMATION
Safety and Preparation for Use 1-3
Specifications 1-5
Abridged Command List 1-7
GETTING STARTED
Your First Measurements 2-1
The Basic Lock-in 2-3
X, Y, R and q 2-7
Outputs, Offsets and Expands 2-9
Storing and Recalling Setups 2-13
Aux Outputs and Inputs 2-15
SR830 BASICS
What is a Lock-in Amplifier? 3-1
What Does a Lock-in Measure? 3-3
The SR830 Functional Diagram 3-5
Reference Channel 3-7
Phase Sensitive Detectors 3-9
Time Constants and DC Gain 3-11
DC Outputs and Scaling 3-13
Dynamic Reserve 3-15
Signal Input Amplifier and Filters 3-17
Input Connections 3-19
Intrinsic (Random) Noise Sources 3-21
External Noise Sources 3-23
Noise Measurements 3-25
OPERATION
Power On/Off and Power On Tests 4-1
Reset 4-1
[Keys] 4-1
Spin Knob 4-1
Front Panel BNC Connectors 4-2
Key Click On/Off 4-2
Front Panel Display Test 4-2
Display Off Operation 4-2
Keypad Test 4-3
Standard Settings 4-4
FRONT PANEL
Signal Input and Filters 4-5
Sensitivity, Reserve, Time
Constants 4-7
CH1 Display and Output 4-12
CH2 Display and Output 4-15
Reference 4-18
Auto Functions 4-21
Setup 4-23
Interface 4-24
Warning Messages 4-26
REAR PANEL
Power Entry Module 4-27
IEEE-488 Connector 4-27
RS232 Connector 4-27
Aux Inputs (A/D Inputs) 4-27
Aux Outputs (D/A Outputs) 4-27
X and Y Outputs 4-27
Signal Monitor Output 4-28
Trigger Input 4-28
TTL Sync Output 4-28
Preamp Connector 4-28
Using SRS Preamps 4-29
PROGRAMMING
GPIB Communications 5-1
RS232 Communications 5-1
Status Indicators and Queues 5-1
Command Syntax 5-1
Interface Ready and Status 5-2
GET (Group Execute Trigger) 5-2
DETAILED COMMAND LIST 5-3
Reference and Phase 5-4
Input and Filter 5-5
Gain and Time Constant 5-6
Display and Output 5-8
Aux Input and Output 5-9
Setup 5-10
Auto Functions 5-11
Data Storage 5-12
Data Transfer 5-15
Interface 5-19
Status Reporting 5-20
STATUS BYTE DEFINITIONS
Serial Poll Status Byte 5-21
Service Requests 5-22
Standard Event Status Byte 5-22
LIA Status Byte 5-23
Error Status Byte 5-23
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