7351 Series Digital Multimeter Operation Manual
3.2.2 Protecting Against Electrostatic Discharge
3-4
3.2.2
Protecting Against Electrostatic Discharge
To prevent semiconductors from being damaged by electrostatic discharge (ESD), the precautions shown
below should be taken. We recommend combining two or more countermeasures to prevent damage from
ESD.
(Static electricity can be generated easily by the movement of a person or the friction against insulation.)
Figure 3-2 Electrostatic Countermeasures for the Work Floor and Human Body
Figure 3-3 Electrostatic Countermeasures for the Workbench
Table 3-2 ESD Countermeasures
Human Body
Use a wrist strap (See Figure 3-2).
Work floor
Install a conductive mat, use conductive shoes, and connect to earth. (See Figure 3-2)
Workbench
Install a conductive mat and connect to earth. (See Figure 3-3)
Wrist strap
Equivalent resistance
Approx.1M
Ground
Workbench
Floor
Equivalent resistance
10
6
to
10
9
1M
Ground
Conductive shoes
Conductive mat
Workbench
Workbench
Workbench
Ground
Ground
Ground
1M
1M
1M
1M
Conductive mat
Copper foil tape
Conductive mat
Conductive mat
(Method 1)
(Method 2)
(Method 3)
Copper wire
