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Caution
Preparing Your VXI System for Use
AC Power
Requirements
WARNING
Chapter 1
After removing R108, heat damage may prevent the resistor
from being re-installed to re-enable the On/Stdby switch.
To access the basic monitor board and resistor:
1. Turn off the mainframe and remove the power cord.
2. Remove the mainframe cover by removing the 10 m3x6 flat head torx
screws.
3. Remove the resistor by heating both sides simultaneously with
soldering irons. Separate the resistor from the board by gently
pressing the tips of the soldering irons together.
4. Save the resistor in order to re-enable the On/Stdby switch. Again,
heat damage may prevent the resistor from being re-installed.
The HP E8400A is shipped from the factory ready to use. However, before
installing VXI instruments and turning on the mainframe, refer to the
following:
•
AC Power Requirements
•
Airflow Requirements
•
Installing VXI Instruments
The HP E8400A mainframe 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 mainframe ships with a power cord and with a 250V, 15A fast blow fuse
installed. The fuse is suitable for all line voltages. Refer to Chapter 3 for
additional information on E8400A power cords and on fuse replacment.
Appendix A contains complete input power specifications.
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 HP E8400A is mounted in a
system cabinet, the power cord need not be accessible since
the cabinet must have its own disconnect device.
Using the HP E8400A Mainframe 13
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