SRS Labs SR510 - Manual (Page 3)

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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 9
Configuration Switches 9
Guide to Operation
Front Panel 11
Signal Inputs 11
Signal Filters 11
Sensitivity 11
Dynamic Reserve 12
Status Indicators 12
Display Select 12
Output 13
Expand Function 13
Rel Function 13
Offset 13
Time Constants 17
Noise Measurements 17
Reference Input and Trigger Levels 9
Phase Controls
Power Switch
18
Local/Remote Operation 18
Default Settings 18
Rear Panel 19
AC Power 19
GPIB (IEEE-488) Connector 19
RS232 Interface 19
Signal Monitor Output 19
Pre-Amp Connector 19
A/D Inputs and D/A Outputs 19
Ratio Feature 19
Internal Oscillator 19
Guide to Programming
Communications 21
Command Syntax 21
Status LED's 21
RS232 Echo Feature 22
Try-out with an ASCII Terminal 22
Command List 23
Status Byte 26
Errors 26
Reset Command 27
Trouble-Shooting Interface Problems 27
Common Hardware Problems 27
Common Software Problems 27
RS232 Interface
Introduction to the RS232 29
Data Communications Equipment 29
Wait Command 29
Termination Sequence 29
GPIB (IEEE-488) Interface
Introduction to the GPIB 31
GPIB Capabilities 31
Response to Special GPIB commands 31
Serial Polls and SRQ's 31
Echo Mode using the RS232 31
Using Both the RS232 & GPIB 31
Lock-in Technique
Introduction to Lock-in Amplifiers 33
Measurement Example 33
Understanding the Specifications 34
Shielding and Ground Loops 34
Dynamic Reserve 35
Current Input 35
Auto-Tracking Bandpass Filter 35
Notch Filters 36
Frequency Range 36
Noise Measurements 36
Output Filters 36
Ratio Capability 36
Computer Interface 36
Internal Oscillator 36
SR510 Block Diagram
Block Diagram 37
Signal Channel 38
Reference Channel 38
Phase-Sensitive Detector 38
DC Amplifier and System Gain 38
Microprocessor System 38
Circuit Description
Introduction 39
Signal Amplifier 39
Current Amplifier 39
Notch Filters 39
Bandpass Filter 39
Reference Oscillator 40
PSD, LP Filters and DC Amplifier 40
Analog Output 41
A/D's 41
D/A's 41
Expand 41
Front Panel
41
Microprocessor Control 41