Agilent Technologies E8401A, Руководство пользователя и обслуживания, Страница: 10 / 66

8 Getting Started Chapter 1
Preparing Your VXI System for Use
The Agilent E840xA mainframes are shipped from the factory ready to use.
This section describes important mainframe installation procedures.
AC Power
Requirements
The Agilent E840xA mainframes can be operated at line voltages of
90 VAC to 264 VAC, and line frequencies of 47 Hz to 66 Hz. The
mainframe can also operate at 360 Hz to 440 Hz with line voltages of
90 VAC to 132 VAC.
The mainframes ship with a power cord and with a fuse installed in the
power supply. The fuse is suitable for all line voltages, but is not accessible.
Appendix A contains complete input power specifications.
WARNING
The power cord is the only way to disconnect the mainframe
from AC power and, therefore, it must be accessible to the
operator at all times. When the Agilent E840xA mainframes are
mounted in a system cabinet, the power cord need not be
accessible since the cabinet must have its own disconnect
device.
Positioning the
Mainframe for
Adequate Cooling
VXI instruments are cooled by air drawn through the back of the mainframe
and exhausted out the sides. The power supply is cooled by air drawn from
the right side (facing the mainframe) and exhausted out the left side. When
placing the mainframe on a work bench or if the mainframe is rack mounted,
provide at least a one inch clearance at the back and sides to allow for proper
air flow.
Air filters are not necessary on these mainframes. However, an optional air
filter kit (mainframe option 938 or Agilent E8401-80938) is available for
use in harsh environments. The airflow is restricted less than 10% with the
air filter installed. Refer to “Agilent E840xA Air Filter Kit” on page 41 for
installation information.