Lake Shore 370 User Manual

Contents

Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
GENERAL
DESCRIPTION
SENSOR PERFORMANCE
Voltage Range
SPECIFICATIONS
OPTIONS AND ACCESSORIES
SAFETY SUMMARY
Dilution Refrigerator Terminology
He Cryostat
Adiabatic Demagnetization Refrigerator (ADR)
MODEL 370 THEORY OF OPERATION
Excitation Modes
Shielding and Grounding Theory
Active Common Mode Reduction
NOISE SOURCES
Resistor Thermal Noise
Resistor Self-Heating and Thermal Resistance
Instrument Operation
Excitation vs. Signal-to-Noise
Scanner Performance
Temperature Range
Sensor Calibration
Contact Area
Considerations For Good Control
Closed Loop PID Control
Examples of PID Control
Tuning a Closed Loop PID Controller
Tuning Integral
REAR PANEL DEFINITION
LINE INPUT ASSEMBLY
RESISTOR INPUT CONNECTION AND CABLING
Driven Guards
Dressing Cables
Temperature Sensors
Scanner Output Connector Definition
Scanner Control Connector Definition
Scanner Mounting Bracket
MONITOR AND REFERENCE OUTPUTS
Heater Output Connection
Boosting Heater Power Above 1W
RELAY CONNECTION
Reading Display
Temperature Control Display
General Keypad Operation
Display Resolution
Voltage Excitation Mode
Turning Excitation Off
Channel Selection
Selecting a Temperature Response Curve
INSTRUMENT SETUP
Monitor Output Selection
Manual Scanner Channel Selection
TEMPERATURE MEASUREMENT
Control Setup
Setpoint Units
Heater Output Display
Heater Polarity
Manually Setting PID Values
Manual Heater Output
Setpoint Ramp
Controlling and Scanning
LINEAR EQUATION (ΔR)
ALARMS
RELAYS
ANALOG OUTPUTS
STILL OUTPUT
LOCKING THE KEYPAD
Default Parameter Values
CalCurve™
Recommended Curve Parameters
Erase Curve
Copy Curve
ZONE TUNING
Using Zone Tuning
Record of Zone Settings
COMPUTER INTERFACE OPERATION
Remote/Local Operation
Status Registers
IEEE Interface Example Programs
DEV 12 Device Template Configuration
Visual Basic IEEE-488 Interface Program Setup
IEEE-488 Interface Program Control Properties
Visual Basic IEEE-488 Interface Program
Program Operation
SERIAL INTERFACE OVERVIEW
Hardware Support
Message Flow Control
Visual Basic Serial Interface Program Setup
Serial Interface Program Control Properties
Visual Basic Serial Interface Program
COMMAND SUMMARY
Interface Commands
Model 112-374 Cable Assembly
SERVICE
FUSE DRAWER
FUSE REPLACEMENT
TROUBLESHOOTING
ENCLOSURE TOP REMOVAL AND REPLACEMENT
ELECTROSTATIC DISCHARGE
Location Of Important Internal Components
CONNECTOR AND CABLE DEFINITIONS
Resistor Sensor INPUT Connectors
ALARM RELAYS Terminal Block
IEEE-488 Rear Panel Connector Details
MODEL 370 CALIBRATION

Lake Shore 370 User Manual Manual pdf 158 page image

Lake Shore Model 370 AC Resistance Bridge User’s ManualInput Connectors.bmpPin Voltage Connector Current Connector1 V– Voltage – I– Current –2 VG– Voltage Guard – IG– Current Guard –3 SHIELD Shield SHIELD Shield4 VG+ Voltage Guard + IG+ Current Guard +5 V+ Voltage + I+ Current +6 None Not Used None Not UsedFigure 8-6. Resistor Sensor INPUT ConnectorsMonitorRefOutputs.bmpPin DescriptionCenterShellSignalGroundFigure 8-7. REFERENCE and MONITOR Connector DetailsHeater Output.bmpPin DescriptionCenterShellSignalGroundFigure 8-8. HEATER OUTPUT Connector DetailsAnalog Outputs.bmpPin DescriptionCenterShellSignalGroundFigure 8-9. ANALOG OUT 1 and 2 (STILL) Connector Details8-12 Service

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