Racal Instruments 3155 Spezifikationen PDF herunterladen (Seite 29)

User Manual 3155

2-2 Installation

Exercise extreme caution when a shock hazard is present. Lethal

voltage may be present on cables, connector jacks, or test fixtures.

The American National Standard Institute (ANSI) states that a shock

hazard exists when voltage levels greater than 30V RMS, 42.4V

peak, or 60VDC are present. Before operating an instrument, make

sure the line cord is connected to a properly grounded power recep-

tacle. Inspect the connecting cables and test leads for possible wear,

cracks, or breaks before each use.

For maximum safety, do not touch the product, test cables or any

other of the instrument parts while power is applied to the circuit un-

der test. ALWAYS remove power from the entire test system before

connecting cables or jumpers, installing or removing cards from the

computer or making internal changes, such as changing card jump-

ers.

Do not touch any object that could provide a current path to the

common side of the circuit under test or power line (earth) ground.

Always keep dry hands while handling the instrument. When using

test fixtures, keep the lid closed while power is applied to the device

under test. Carefully read the “Safety Precautions” instructions that

are supplied with your test fixtures.

Before performing any maintenance, disconnect the line cord and all

test cables. Only qualified service personnel should perform mainte-

nance. If you have no past experience in computer servicing, we

strongly recommend that installation and initial tests on the instru-

ment be done by your computer dealer or by the factory itself

Power Require-

ments

The Model 3155 operates from within a PXI chassis. Voltages are

supplied to the instrument from the backplane. The instrument re-

quires a variety of voltages as specified in the specification list in Ap-

pendix A. Before you slide the card into the PXI chassis, make sure

the chassis is capable of supplying the required voltages and has

sufficient current to drive the generator.

Grounding

Re-

quirements

To ensure the safety of operating personnel, the U.S. O.S.H.A. (Oc-

cupational Safety and Health) requirement and good engineering

practice mandate that the instrument panel and enclosure be "earth"

grounded.

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Racal Instruments 3155 Spezifikationen Seite 29