PDFINFO H2 87 9- 0 1
VXI Mainframe, C-Size, 13-Slot,
1000 Watt
HP E8404A
Technical Specifications
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13-Slot, C-size
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Enhanced monitoring for confident
measurements
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Color graphics display
●
1000 watts of usable power
●
Efficient, quiet cooling improves VXI module
performance
●
Compliant with VXIbus & VXI
Specifications
plug&play
Description
The HP E8404A C-size, 13-slot VXI mainframe is the
high-performance mainframe in Hewlett-Packard’s new
VXI mainframe family. It delivers innovative cooling
technology, improved backplane design, high reliability,
easy maintenance, and versatile accessories. The power
supply in the HP E8404A VXI mainframe provides 1000
watts of usable power, sufficient for the most
demanding automated test applications. The innovative
air distribution system in this mainframe provides
extremely quiet and efficient cooling.
HP E8404A
Enhanced monitoring of the HP E8404A mainframe
provides superior cooling control and details regarding
temperatures throughout the mainframe, power supply
voltages and currents, fans operation, system status,
history queue, and stripcharts or histograms for easy
diagnostics. This information is available on the full
color display or through VXIbus or RS-232 connection.
A front panel diagnostics connector allows continuous
local or remote system monitoring. This mainframe also
complies with the VXI specification by providing
injector surface rails used by the HP QUIC easy module
insertion and extraction system. Superior cooling,
reliable design and enhanced monitoring make the
HP E8404A an excellent choice for all VXI test system
applications.
Refer to the HP Website for instrument driver
availability and downloading instructions, as well as for
recent product updates, if applicable.
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Enhanced Monitoring
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VXIbus or RS-232 communication
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3 temperature sensors per slot
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Cooling control
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Power supply voltage and current
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Stripcharts and histograms for easy diagnostics
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Audible warnings of over-limit conditions
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History queue
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VXI
plug&play
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English, French, German, and Spanish language
WIN Framework driver
support
State-of-the-art enhanced monitoring is provided on the
HP E8404A VXI mainframe. The enhanced monitor
board plugs into the backplane from the rear of the
mainframe; it does not occupy a slot in the mainframe
or tie up a MODID line.
The enhanced monitoring is message based, allowing
easy communication with the mainframe for the user
over RS-232 or through the VXIbus. SCPI commands
are used to address the mainframe. A VXI
plug&play
WIN Framework driver is provided.
Temperature monitoring includes module exhaust
temperatures at three points on every slot, power
supply temperature and ambient temperature.
Measurements at the front, center and rear of every slot
provide an accurate assessment of the temperature
fluctuations over a variety of cards, whose hottest
components may vary in position. Display screens are
provided for overall temperature map, temperature
limits set, stripcharts and histograms of each slot.
Temperature monitoring is also used for cooling
control. Both the absolute temperature of the slots and
the temperature rise over ambient temperature are
measured. Cooling speed is increased when either an
absolute temperature or a temperature rise approaches
its respective limit. The user may adjust these control
limit ranges programmatically.
Speeds of power supply fans and the impeller are
displayed as a percentage of full speed and as the
number of rotations per minute.
All seven voltages, + 5 V standby and the optional usersupplied external 5 V power are measured. Current
monitoring is provided and power is calculated for each
power supply voltage. Overview display screens are
provided for all these data; more detailed information is
also available in stripcharts and histograms. These
values are visible on the display and are available
through the VXI and RS-232 interfaces.
Warning alarms occur when a temperature is over limit,
power supply voltages are out of VXI specification,
when current or total power exceeds user set limits, or
for certain user-defined conditions. A beeper provides
audible warnings; it is enabled or disabled through a
SCPI command or through the front panel keys.
The enhanced monitor includes a maintenance timer.
This timer may be set, queried, and reset by the user for
support of scheduled maintenance activities, such as
cleaning the optional air filter.
The enhanced monitor may operate independently of
line power by providing external + 5 V power. When
line power goes down, communication with the
enhanced monitor is possible via the RS-232 interface.
Remote power-on is available via the diagnostic
connector “remote on signal” or through a SCPI
command.
Localization enables the user to select English, French,
German, or Spanish languages on the display for ease of
operation worldwide.
Color Graphics Display
A full color graphical display on the front of the
HP E8404A VXI mainframe provides frame status,
including:
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Temperatures at front, center and rear of every slot
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Ambient and power supply temperatures
●
Power supply voltages
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Power supply currents
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Total power
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Fans speeds
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User-defined text messages
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System log and timer
●
History
1000W Power Supply
The HP E8404A VXI mainframe features over 1000 watts of
usable power from 0 °C to 55 °C. Ample dynamic and peak
currents are provided for most applications.
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Superior Cooling
The innovative cooling design in the HP E8404A VXI
mainframe provides extremely quiet and efficient
cooling. Carefully engineered airflow provides the
ultimate in cooling with a minimum of noise.
Outstanding back pressure performance insures airflow
through dense modules. Separate power supply cooling
fan(s) provides an independent air path for reliable
cooling of the power supply.
All fans operate in either Variable or Full Speed mode.
A two-position switch on the mainframe’s front panel
controls the speed mode. Full Speed mode is
recommended for maximum cooling and/or if acoustic
noise is not a concern; all air movers (cardcage impeller
and power supply fan(s)) are operated at full capacity
at all times. In Variable Speed mode, the fan speed will
vary depending on the temperature rise in the
mainframe, and the ambient temperature. Variable
Speed mode operation allows the quietest operation
while providing sufficient cooling for the modules in
the mainframe.
Airflow is conveniently routed into the rear and
exhausted out the sides of the mainframe. This allows
mainframes to be stacked or rack-mounted directly on
top of one another.
At-a-Glance Confidence in Operation
The front panel indicator lights on the HP E8404A VXI
mainframe gives immediate visual indication that the
power supply voltages are operating within the VXI
Specification, the temperatures are within limit, and
that the fans are operational. Backplane activity and
SYSFAIL indicators are also provided.
The system can be reset easily from the front panel,
providing reset even when the Slot 0 is inaccessible due
to cabling.
The diagnostic connector, conveniently located on the
front of the mainframe, provides connection for remote
monitoring of power supply voltages, power supply and
reference temperatures, and fans function. This
connector also allows remote on/standby, access to
+5VSTDBY, ACFAIL, and SYSRESET. The connector’s
functionality is a superset of the functionality on the
HP E1401B Mainframe, allowing software and hardware
compatibility with existing applications. Up to 1A of
+5VSTDBY may be provided by the user through the
connector. Up to 1 A each of + 5 V and + 12 V are
available for external applications through the
connector.
Improved, Highly Reliable Backplane Design
The backplane features solid state automatic daisychain jumpering for the VMEbus grant and interrupt
acknowledge lines, eliminating the need for hand
selection of switch settings. Full differential distribution
of the CLK10 signal is provided on the backplane. This
minimizes jitter and skew, providing a clean timing
source for VXI instrument modules. The surface mount
backplane improves both reliability and stripline signal
performance.
HP generates SYSRESET and ACFAIL on the
backplane. This is necessary for full compliance with
the VXI Specification, but is not generally implemented
by other manufacturers.
Easy Maintenance Rear-Accessible Power Supply
and Impeller
Convenient access to the power supply, cooling and
monitoring systems is provided through the
mainframe’s rear panel; a replacement power supply or
fan can be installed without removing the mainframe
from a rack. The power supply’s plug-in design makes
repairing easy.
The monitor control board and the impeller for module
cooling are easily replaced. The internal fan for the
power supply, an integral part of the supply, is easily
replaced with the power supply itself. If the optional Air
Filter Accessory Kit is installed, air filters may be
replaced without tools.
Accessories and Configurations
Optional Rack Mounting Kits
Three rack mounting kits are available for the
mainframe, providing versatile options for installation
in an HP or a non-HP rack. The following rack
mounting kits are available: Standard Adapter Kit, Flush
Mount Adapter Kit and VXI
plug&play
Adapter Kit.
Standard Adapter Kit for Recess, Flush or
Forward Rack Mounting
Using the Standard Adapter Kit (HP E8394A), the
mainframe can be recess mounted up to 10.6 inches in
∼1/2 inch increments. (Recess mounting is required for
compatibility with the tinted acrylic door.) The
mainframe can also be mounted extended from the
front of the rack from 0 to 5.8 inches in ∼1/2 inch
increments, allowing mounting in racks with shallow
depths. The Standard Adapter Kit includes handles and
requires the HP E3664A Support Rail Kit or the
HP 1494-0411 Rack Slide Kit.
Compliant
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