Agilent Technologies C-Size VXIbus Systems Instrukcja Użytkownika Pobierz pdf (Strona 2)

Visit Agilent Technologies’ worldwide websites (

http://

www.agilent.com/find/vxi

http://www.agilent.com/find/

tmdir

) to review the following E8408A example

applications:

• Appliance manufacture

• Battery manufacture

• Cable and wire test

• Canning process characterization

• Crystal oscillator manufacture

• Design verification using environmental chambers

• Energy conservation

• Elevator test

• Race car test

• Switch box in Electronic Functional Test

• Wastewater treatment/test

175 Watts Usable Power

The E8408A provides 175 watts usable power. This is

adequate to power the vast majority of Agilent VXI modules.

Superior Cooling

The E8408A’s innovative mechanical design provides

extremely quiet and efficient cooling for the power supply

and modules. Carefully engineered airflow provides

excellent cooling with minimum acoustic noise.

A two-speed cooling fan provides reliable cooling of the

power supply and modules. The fan operates in either

Variable (automatically controlled) 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 when acoustic noise is not a big concern.

In Variable Speed mode, the fan speed is controlled

automatically as a function of temperature rise in the

mainframe and ambient temperature. Variable Speed mode

allows the quietest operation while providing sufficient

power supply and module cooling.

Airflow enters the mainframe rear panel, flows through the

power supply, fan and modules and exhausts out the left

side (as viewed from the front with the E8408A in

horizontal position). This allows mainframes to be stacked

or rack-mounted directly on top of one another.

At-a-Glance Confidence in Operation

The E8408A front panel indicator lights give up-to-the-

moment visual indication that power supply voltages are

operational, the power supply temperature is within limits,

and the fan is operational.

Improved, Highly Reliable Backplane Design

The backplane features solid state automatic daisy-chain

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.

Agilent 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 Power Supply

Convenient access to the power supply and cooling fan is

provided through the mainframe’s rear panel. A

replacement power supply and fan can be installed without

removing the mainframe from your rack. The power

supply’s plug-in design makes replacement easy.

Backplane Connector Shields Kit

The E8408A Opt 918 improves ground connections between

VXI modules and the E8408A backplane. A few Agilent VXI

modules require these shields to comply with EMC EN55011

and CISPR11. (The vast majority of Agilent VXI modules do

not require these shields.) Note that the shields are only

useful if VXI modules include contacts that conform to VXI

Spec. B.7.2.3.

Rack Mount/Cable Route Kit

The E8397A Rack Mount Adapter Kit allows the E8408A to

be flush-mounted or recess-mounted up to 8 inches in one-

inch increments. In addition, the rack mount kit includes a

1.125-inch-wide cable route on the mainframe’s right side,

plus stick-on labels for use when the mainframe is mounted

in a horizontal position. To mount the E8408A in Agilent

rack cabinets, order the E8397A Rack Mount Cable Route

Adapter Kit and either the E3663AC Support Rail Kit or

1494-0413 Rack Slide Kit. The 1494-0413 Rack Slide Kit can

be mounted in non-Agilent rack cabinets using 1494-0061

End Brackets.

Accessories and Configurations

1 2 3 4 5 6 7 8

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Agilent Technologies C-Size VXIbus Systems Instrukcja Użytkownika Strona 2

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