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0004-000067
3
Handling Precautions for Electronic
Devices Subject to Damage by
Static Electricity
This instrument is susceptible to Electronic Static Discharge (ESD) damage. When
transporting, place the instrument or module in conductive (anti-static) envelopes or
carriers. Open only at an ESD-approved work surface. An ESD safe work surface is
defined as follows:
•
The work surface must be conductive and reliably connected to an earth ground
with a safety resistance of approximately 250 kilohms.
•
The
surface
must NOT be metal. A resistance of 30–300 kilohms per square inch
is suggested.
Ground the frame of any line-powered equipment, chassis, test instruments, lamps,
soldering irons, etc., directly to the earth ground. To avoid shorting out the safety
resistance, ensure that the grounded equipment has rubber feet or other means of
insulation from the work surface.
Avoid placing tools or electrical parts on insulators. Do NOT use any hand tool that
can generate a static charge, such as a non-conductive plunger-type solder sucker.
Use a conductive strap or cable with a wrist cuff to reliably ground to the work surface.
The cuff must make electrical contact directly with the skin; do NOT wear it over
clothing.
Note
: Resistance between the skin and the work surface is typically 250 kilohms
to 1 megohm using a commercially-available personnel grounding device.
Avoid circumstances that are likely to produce static charges, such as wearing clothes
of synthetic material, sitting on a plastic-covered stool (especially when wearing
woolen material), combing the hair, or making extensive pencil erasures. These
circumstances are most significant when the air is dry.
When testing static sensitive devices, ensure DC power is ON before, during, and after
application of test signals. Ensure all pertinent voltages are switched OFF while circuit
boards or components are removed or inserted.
Содержание ZT4611
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