TM109902 (5/03)
3-5
USE OR DISCLOSURE OF DATA CONTAINED ON THIS PAGE IS SUBJECT TO THE
RESTRICTION ON THE TITLE PAGE OF THIS DOCUMENT
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C
O M M A N D
S
Y S T E M S
D
I V I S I O N
(2) Work Station
All equipment, tools, materials, and personnel at the workstation must be maintained at the
same electrical potential. All grounding connections shall have a common point, and that
point shall be connected to electrical ground.
Soldering irons shall be isolated from the power line by transformer, or shall be direct
current isolated. The soldering iron must be grounded and have a resistance of less than 0.2
ohm from the tip to ground when the iron is hot.
Test equipment shall have all exposed metallic surfaces electrically connected to the test
equipment power system ground (through 200 ohms or less).
Do not use rubber mats, carpets, and rugs in the workstation area. Use grounded conductive
mats.
Do not allow nonconductive items on the workbench. This includes such items as plastic
ashtrays, cellophane wrappers, plastic tools, styrofoam coffee cups, etc.
Maintain the relative humidity higher than 40 percent (minimum) in the work area.
Keep all material and work surfaces CLEAN in the work area. Wash with damp cloth when
necessary.
Keep the workstation static-safe. Periodically check the area with a static meter. When a
dangerous reading is observed, remove the nonconductor or take precautions to prevent
contact with ESDS devices.
(3) Personnel
When handling electrostatic discharge sensitive devices or assemblies, wear a skin-contact
wrist strap connected to the workstation common ground.
Do not connect personnel directly to earth or
building ground. Commercial grounding straps
contain an internal resistance of about 1
megohm in the cord to bleed the electrostatic
charge from the body while protecting personnel
from electrical shock.
WARNING
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