GRAPHTEC GL840 User Manual page 6

Safety Precautions
Do not touch the input terminals after the signal
cable is connected to the measuring objects that are
containing the voltage.
•
It will cause the electric shock.
•
Ensure that the GL840's power source is positioned so that
it can easily be disconnected.
Strict observance Watch out for
electrical shock
Do not touch the device with wet hands.
•
This can cause an electrical shock or malfunction.
Don't touch
with wet hands
Do not input the voltage that is exceeding the
specification of this device.
•
If a voltage exceeding the specified value is input, the
semiconductor relay in the input section will be damaged.
Never input a voltage exceeding the specified value even
for a moment.
Strict observance
•
Have an enough margin from the specification of
withstanding voltage when using this device, it have to
consider a noise and change of the measurement voltage.
CAUTION
•
It will cause the fire or the electric shock when the voltage is
input to the defective device.
Use prohibited
iv
Safety Precautions
CAUTION
Confirm the power of supplier of signal is turned
off before connecting the input cables to the input
terminal of this device to prevent the electric shock.
•
Be careful of static electricity.
•
Do not block the air vent on the GL840.
•
Confirm this device is not broken before the input
cable is connected to the input terminal.
•
It will cause the electric shock.
Strict observance Watch out for
electrical shock
Static electricity may damage the device. To prevent this
from happening, touch a different metal object to discharge
any built-up static electricity before touching the GL840.
CAUTION
This device will get damage when there is abnormal heat in
this device.
Strict observance
HIGH
TEMPERATURE
It will cause the fire or the electric shock when the voltage is
input to the defective device.
Use prohibited