3156B User Manual
Configuring The Instrument 2-2
Racal Instrument © 2005
WARNING
For maximum safety, do not touch the product, test cables,
or any other instrument parts while power is applied to the
circuit under 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 the module address.
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 your hands dry 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
maintenance.
Performance
Checks
The instrument has been inspected for mechanical and electrical
performance before shipment from the factory. It is free of physical
defects and in perfect electrical order. Check the instrument for
damage in transit and perform the electrical procedures outlined in the
section entitled
Unpacking and Initial Inspection.
Grounding
Requirements
To ensure the safety of operating personnel, the U.S. O.S.H.A.
(Occupational Safety and Health) requirement and good engineering
practice mandate that the instrument panel and enclosure be “earth”
grounded. Although BNC housings are isolated from the front panel,
the metal part is connected to earth ground.
WARNING
Do not attempt to float the output(s) from ground as it may
damage the Model 3156B and your equipment.
