Lake Shore 420, Руководство пользователя

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Lake Shore Model 420 Gaussmeter User’s Manual
Introduction
1-3
1.2.1 Identification of Electrostatic Discharge Sensitive Components
Below are various industry symbols used to label components as ESDS:
1.2.2 Handling Electrostatic Discharge Sensitive Components
Observe all precautions necessary to prevent damage to ESDS components before attempting installation.
Bring the device and everything that contacts it to ground potential by providing a conductive surface and
discharge paths. As a minimum, observe these precautions:
1. Deenergize or disconnect all power and signal sources and loads used with unit.
2. Place unit on a grounded conductive work surface.
3. Ground technician through a conductive wrist strap (or other device) using 1 M
Ω
series resistor to protect
operator.
4. Ground any tools, such as soldering equipment, that will contact unit. Contact with operator's hands
provides a sufficient ground for tools that are otherwise electrically isolated.
5. Place ESDS devices and assemblies removed from a unit on a conductive work surface or in a
conductive container. An operator inserting or removing a device or assembly from a container must
maintain contact with a conductive portion of the container. Use only plastic bags approved for storage of
ESD material.
6. Do not handle ESDS devices unnecessarily or remove from the packages until actually used or tested.
1.3 SAFETY SUMMARY
Observe these general safety precautions during all phases of instrument operation, service, and repair.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety
standards of design, manufacture, and intended instrument use. Lake Shore Cryotronics, Inc. assumes no
liability for Customer failure to comply with these requirements.
The Model 420 protects the operator and surrounding area from electric shock or burn, mechanical hazards,
excessive temperature, and spread of fire from the instrument. Environmental conditions outside of the
conditions below may pose a hazard to the operator and surrounding area.
• Temperature: 5° to 40° C.
• Maximum relative humidity: 80% for temperature up to 31° C decreasing linearly to 50% at 40° C.
• Power supply voltage fluctuations not to exceed ±10% of the nominal voltage.