5 grounding, 1 check points for grounding, Grounding – Toshiba SX 2000 User Manual

Page 150: Check points for grounding, A caution

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4.5 Grounding

It is advisable, for the grounding of electronic devices to carry out dedicated

grounding which is isolated from that of power systems, and to carry out single-point
grounding between 2 or more electronic devices. The S2T is designed to apply to

EMC which takes the actual application into account, and it has a satisfactory noise-
immunity without carrying out grounding of the device itself. However, as a
precaution, correct grounding is recommended from the viewpoint of reliability.

A CAUTION

Operation without grounding may cause electrical shock or malfunction. Connect the ground

terminal on the S2T to the system ground.

4.5.1 Check points for grounding

Check the grounding against the following criteria :

(1 ) The S2T must not become a path for a ground current. High-frequency currents

are particularly harmful.

(2) Equalize the ground potentials when 2 or more units of electronic equipment are

to be connected. Ground them at single-point.

(3) Do not connect the ground of the S2T to that of high-power system.

(4) Do not use a ground that has unstable impedance, such as painted screws, or

grounds subject to vibration.

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