TEST INSTRUMENT SAFETY GUIDELINES
WARNING
An electrical shock of over 10 milliamps of current to pass through the heart will stop most human
heartbeats. Voltage as low as 35 volts dc or ac rms should be considered dangerous and hazardous
since it can produce a lethal current under certain conditions. Be sure to observe following safety
precautions:
1.
Do not expose high voltage needlessly in the equipment under test. Remove housings and
covers only when necessary. Turn off equipment while making test connections in high-voltage
circuits. Discharge high-voltage capacitors after removing power.
2.
If possible, familiarize yourself with the equipment being tested and the location of its high
voltage points. However, remember that high voltage may appear at unexpected points in
defective equipment.
3.
Use an insulated floor material or a large, insulated floor mat to stand on, and an insulated work
surface on which to place equipment; make certain such surfaces are not damp or wet.
4.
When using a probe, touch only the insulated portion. Never touch the exposed tip portion.
5.
When testing ac powered equipment, remember that ac line voltage is usually present on some
power input circuits such as the on-off switch, fuses, power transformer, etc. any time the
equipment is connected to an ac outlet, even if the equipment is turned off.
Summary of Contents for HG139
Page 1: ...GME User s Manual Rev 1 1...
Page 17: ...www gmetechnology com 13 Notes...
