Quantum Composers 9530 Series Manual do Utilizador descarregar pdf (Página 2)

Custom Modifications

The 9314E is microprocessor-controlled and, employs a flexible and expandable user-

interface. New features and operating modes often can be added, without hardware modifi-

cations, by merely modifying the software contained inside the 9314E. Most modifications

can be made for a very modest charge -- contact Quantum Composers for details.

Safety Issues

Normal use of test equipment exposes you to a certain amount of danger from electrical

shock because testing must be performed where exposed voltage is present. An electrical

shock causing 10 milliamps of current to pass through the heart will stop most human heart-

beats. Voltage as low as 35 VDC or RMS AC should be considered dangerous and hazard-

ous since it can produce a lethal current under certain conditions. Higher voltages pose an

even greater threat because such voltage can more easily produce a lethal current. Your nor-

mal work habits should include all accepted practices that will prevent contact with exposed

high voltage, and that will steer current away from your heart in case of accidental contact

with a high voltage. You will significantly reduce the risk factor if you know and observe the

following safety precautions:

1. Do not expose high voltage needlessly. 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 unex-

pected 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. Use the time-proven "one hand in the pocket" technique while handling an instru-

ment probe. Be particularly careful to avoid contacting a nearby metal object that

could provide a good ground return path.

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 trans-

former etc., any time the equipment is connected to an AC outlet, even if the equip-

ment is turned off.

6. Never work alone. Someone should always be nearby to render aid if necessary.

Training in CPR first aid is highly recommended.

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Quantum Composers 9530 Series Manual do Utilizador Página 2