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Model:
SR510
Data:
1989
Kategoria:
Grupa:
Opis:
LOCK-IN AMPLIFIER
Informacja
General
Power 100, 120, 220, 240 VAC (50/60 Hz); 35 Watts Max
Mechanical 17" x 17" x 3.5" (Rack Mount Included) 12 lbs.
Warranty Two years parts and labor.
Signal Channel
Inputs Voltage: Single-ended or True Differential
Current: 106 Volts/Amp
Impedance Voltage: 100 MĦ + 25 pF, ac coupled
Current: 1 kĦ to virtual ground
Full Scale Voltage: 100 nV (10 nV on expand) to 500 mV
Sensitivity Current: 100 fA to 0.5 ƒÊA
Maximum Voltage: 100 VDC, 10 VAC damage threshold
Inputs 2 VAC peak-to-peak saturation
Current: 10 ƒÊA damage threshold
1 ƒÊA ac peak-to-peak saturation
Noise Voltage: 7 nV/ãHz at 1 kHz
Current: 0.13 pA/ãHz at 1 kHz
Common Mode Range: 1 Volt peak; Rejection: 100 dB dc to 1KHz
Above 1KHz the CMRR degrades by 6 dB/Octave
Gain Accuracy 1% (2 Hz to 100KHz)
Gain Stability 200 ppm/‹C
Signal Filters 60 Hz notch, -50 dB (Q=10, adjustable from 45
to 65 Hz)
120 Hz notch, -50 dB (Q=10, adjustable from 100 to 130 Hz))
Tracking bandpass set to within 1% of ref freq (Q=5)
Dynamic Reserve 20 dB LOW (1 ƒÊV to 500 mV sensitivity)
40 dB NORM (100 nV to 50 mV sensitivity)
60 dB HIGH (100 nV to 5 mV sensitivity)
Bandpass Filter adds 20 dB to dynamic reserve
Line Notch filters increase dynamic reserve to 100 dB
Reference Channel
Frequency 0.5 Hz to 100 kHz
Input Impedance 1 MĦ, ac coupled
Trigger SINE: 100 mV minimum, 1Vrms nominal
PULSE: }1 Volt, 1 ƒÊsec minimum width
Mode Fundamental (f) or 2nd Harmonic (2f)
Acquisition Time 25 Sec at 1 Hz
6 Sec at 10 Hz
2 Sec at 10 kHz
Slew Rate 1 decade per 10 S at 1 kHz
Phase Control 90° shifts
Fine shifts in 0.025° steps
Phase Noise 0.01° rms at 1 kHz, 100 msec, 12 dB TC
Phase Drift 0.1°/°C
Phase Error Less than 1° above 10Hz
Demodulator
Stability 5 ppm/°C on LOW dynamic reserve
50 ppm/°C on NORM dynamic reserve
500 ppm/°C on HIGH dynamic reserve
Time Constants Pre: 1msec to 100 sec (6 dB/Octave)
Post: 1sec, 0.1 sec, none (6 dB/Octave) or none
Offset Up to 1X full scale (10X on expand)
Harmonic Rej -55 dB (bandpass Filter in)
Outputs & Interfaces
Outputs X (RcosØ), X Offset, Noise
Output Meter 2% Precision mirrored analog meter
Output LCD Four digit auto-ranging LCD display shows same
values as the analog meters
Output BNC ±10 V output corresponds to full scale input
<1Ω output impedance
Reference LCD Four digit LCD display for reference phase
shift or frequency
RS232 Interface controls all functions. Baud rates from 300
to 19.2 K
GPIB Interface controls all functions. (IEEE-488 Std)
A/D 4 BNC inputs with 13 bit resolution (±10.24 V)
D/A 2 BNC outputs with 13 bit resolution (±10.24 V)
Ratio Ratio output equals 10X output divided by the
Denominator input.
Internal Oscillator Range: 1 Hz to 100 kHz, 1% accuracy
Stability: 150 ppm/°C
Distortion: 2% THD
Amplitude: 1% accuracy, 500 ppm/°C stability
Typ ręczny:
Instrukcja obsługi
Strony:
73
Rozmiar:
727.32 Kbytes (744778 Bytes)
Język:
english
Rewizja:
3.3
Ręczny ID:
Data:
2003 11 01
Jakość:
Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data przesłania:
2017 01 01
MD5:
85376193875d45fbc50fbbcc52a6b6b1
Pobrane:
1172
Informacja
Condensed Information
SAFETY and Preparation for use 1
Symbols 2
Specifications 3
Front Panel Summary 5
Abridged Command List 6
Status Byte Definition 7
Configuration Switches 7
Guide to Operation
Front Panel 8
Signal Inputs 8
Signal Filters 8
Sensitivity 8
Dynamic Reserve 9
Status Indicators 9
Display Select 9
Output 9
Expand Function 9
Rel Function 9
Offset 10
Time Constants 10
Noise Measurements 10
Reference Input and Trigger Levels 11
Phase Controls 11
Power Switch 12
Local/Remote Operation 12
Default Settings 12
Rear Panel 13
AC Power 13
GPIB (IEEE-488) Connector 13
RS232 Interface 13
Signal Monitor Output 13
Pre-Amp Connector 13
A/D Inputs and D/A Outputs 13
Ratio Feature 13
Internal Oscillator 13
Guide to Programming
Communications 15
Command Syntax 15
Status LED's 15
RS232 Echo Feature 16
Try-out with an ASCII Terminal 16
Command List 17
Status Byte 20
Errors 20
Reset Command 20
Trouble-Shooting Interface Problems 21
Common Hardware Problems 21
Common Software Problems 21
RS232 Interface
Introduction to the RS232 21
Data Communications Equipment 22
Wait Command 22
Termination Sequence 22
GPIB (IEEE-488) Interface
Introduction to the GPIB 22
GPIB Capabilities 22
Response to Special GPIB commands 22
Serial Polls and SRQ's 23
Echo Mode using the RS232 23
Using Both the RS232 & GPIB 23
Lock-in Technique
Introduction to Lock-in Amplifiers 24
Measurement Example 24
Understanding the Specifications 25
Shielding and Ground Loops 25
Dynamic Reserve 26
Current Input 26
Auto-Tracking Bandpass Filter 26
Notch Filters 27
Frequency Range 27
Noise Measurements 27
Output Filters 27
Ratio Capability 27
Computer Interface 27
Internal Oscillator 27
SR510 Block Diagram
Block Diagram 28
Signal Channel 29
Reference Channel 29
Phase-Sensitive Detector 29
DC Amplifier and System Gain 29
Microprocessor System 29
Circuit Description
Introduction 30
Signal Amplifier 30
Current Amplifier 30
Notch Filters 30
Bandpass Filter 30
Reference Oscillator 31
PSD, LP Filters and DC Amplifier 31
Analog Output 31
A/D's 31
D/A's 32
Expand 32
Front Panel 32
Microprocessor Control 32
RS232 Interface 32
GPIB Interface 32
Power Supplies 33
Internal Oscillator 33
Calibration and Repair
Introduction 34
Multiplier Adjustments 34
Amplifier and Filter Adjustments 34
CMRR Adjustment 34
Line Notch Filter Adjustment 35
2xLine Notch Filter Adjustment 35
Repairing Damaged Front-End 35
Appendix A: Noise Sources and Cures
Johnson Noise 36
'1/f' Noise 36
Noise Spectrum 36
Capacitive Coupling 37
Inductive Coupling 37
Ground Loops 38
Microphonics 38
Thermocouple Effect 38
Appendix B: RS232
Simplest Case Using the RS232 39
Using Control Lines 39
Baud Rates 39
Stop Bits 40
Parity 40
Voltage Levels 40
'Eavesdropping' 40
Appendix C: GPIB
Introduction to the GPIB 41
Bus Description 41
Appendix D: Program Examples
IBM PC, Microsoft Basic, via RS232 42
IBM PC, Microsoft Fortran, via RS232 43
IBM PC, Microsoft C, via RS232 45
IBM PC, Microsoft Basic, via GPIB 47
HP-85, HP Basic, via HPIB 49
Documentation
Part Numbering and Locations 50
Parts List, Main Assembly 51
Parts List, Internal Oscillator 65
Parts List, Miscellaneous 66
Parts List, Front Panel 67
Schematic Diagrams 71