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Table of Contents
Condensed Information
SAFETY and Preparation for use 1
Symbols 2
Specifications 3
Front Panel Summary 5
Abridged Command List 7
Status Byte Definition 8
Configuration Switches 8
Guide to Operation
Front Panel 9
Signal Inputs 9
Signal Filters 9
Sensitivity 9
Dynamic Reserve 10
Status Indicators 10
Display Select 10
Channel 1 Display 10
R Output 11
Output Channel 1 11
Rel Channel 1 11
Offset Channel 1 11
Expand Channel 1 12
X (RCOSØ) Output 12
Channel 2 Display 12
Ø Output 12
Output Channel 2 13
Rel Channel 2 13
Auto Phase 13
Offset Channel 2 13
Expand Channel 2 14
Y (RSINØ) Output 14
Reference Input 14
Trigger Level 14
Reference Mode 15
Reference Display 15
Phase Controls 15
Time Constants 15
Noise Measurements 15
Power Switch 16
Local/Remote Operation 16
Default Settings 16
Rear Panel 17
AC Power 17
GPIB (IEEE-488) Connector 17
RS232 Connector 17
Signal Monitor Output 17
Pre-Amp Connector 17
A/D Inputs and D/A Outputs 17
Ratio Feature 17
Internal Oscillator 17
Guide to Programming
Communications 19
Command Syntax 19
Status LED's 19
RS232 Echo Feature 20
Try-out with an ASCII Terminal 20
Command List 21
Status Byte 24
Errors 24
Reset Command 25
Trouble-Shooting Interface Problems 25
Common Hardware Problems 25
Common Software Problems 25
RS232 Interface
Introduction to the RS232 26
Data Communications Equipment 26
Wait Command 26
Termination Sequence 26
GPIB (IEEE-488) Interface
Introduction to the GPIB 26
GPIB Capabilities 26
Response to Special GPIB commands 26
Serial Polls and SRQ's 27
Echo Mode using the RS232 27
Using Both the RS232 & GPIB 27
Lock-in Technique
Introduction to Lock-in Amplifiers 28
Measurement Example 28
Understanding the Specifications 29
Shielding and Ground Loops 29
Dynamic Reserve 30
Current Inputs 30
Bandpass Filter 30
Notch Filters 31
Frequency Range 31
Output Time Constants 31
Noise Measurements 31
Ratio Capability 31
Computer Interfaces 31
Internal Oscillator 31
SR530 Block Diagram
Block Diagram 32
Signal Channel 33
Reference Channel 33
Phase-Sensitive Detector 33
DC Amplifier and System Gain 33
Microprocessor System 33