Technical data
3-6 Service Guide 85309-90082
General Information LO/IF Distribution Unit
General Safety Considerations 85309B
Statement of Compliance
This instrument has been designed and tested in accordance with IEC Publication 61010, Safety
Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition. The
instruction documentation contains information and warnings which must be followed by the user to ensure
safe operation and to maintain the instrument in a safe condition.
General Safety Considerations
Ground the Instrument
WARNING This is a Safety Class I product (provided with a protective earthing ground incorporated in the
power cord). The mains plug shall only be inserted in a socket outlet provided with a protective
earth contact. Any interruption of the protective conductor, inside or outside of the instrument, will
make the instrument dangerous. Intentional interruption is prohibited.
Before Applying Power
Verify that the product is configured to match the available main power source. If this product is to be
powered by autotransformer, make sure the common terminal is connected to the neutral (grounded) side of
the ac power supply.
Cautions applicable to this instrument.
WARNING Always use the three-prong AC power cord supplied with this instrument with adequate
electric rating. Failure to ensure adequate earth grounding or using a power cord with
inadequate rating will impair the safety protection provided by the equipment and make
the instrument dangerous.
CAUTION This product is designed for use in Installation Category II and Pollution Degree 2.
CAUTION This instrument has autoranging line voltage input; be sure the supply voltage is within the
specified range.
CAUTION Ventilation Requirements: When installing the instrument in a cabinet, the convection into
and out of the instrument must not be restricted. The ambient temperature (outside the
cabinet) must be less than the maximum operating temperature of the instrument by 4 C for
every 100 watts dissipated in the cabinet. If the total power dissipated in the cabinet is
greater than 800 watts, forced convection must be used.