Technical data

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Design a system to test a variety of
products: This series consists of
2 mainframes and 5 modules. The
N3300A mainframe is full rack
width. It has 6 slots. The N3301A
mainframe is half rack width. It
has 2 slots. Any assortment of the
5 different modules can be config-
ured into these mainframes, up
to the slot capacity. The N3302A
(150 watts), N3303A (250 watts),
N3307A (250 watts) and N3304A
(300 watts) each require one slot.
The N3305A (500 watts) and the
N3306A (600 watts) each require
2 slots. The electronic load can be
configured to supply exactly what
you need now, and this modular
design also allows for easy future
reconfiguration.
Test high current power supplies:
Electronic load modules can be
operated in parallel to provide
addition current sinking capability.
Control the electronic load how you
want to: GPIB, RS232, and manual
use of the front panel all provide
complete control of these electronic
loads. There are also analog pro-
gramming and monitoring ports
for those applications that utilize
non-standard interfaces, require
custom waveforms, or utilize
process control signals. Custom
waveforms can also be created
by downloading a “List” of load
parameters. In addition, there is
a built-in transient generator,
which operates in all modes.
Quickly create powerful and consistent
software: All Agilent Technologies
electronic loads use the SCPI
(Standard Commands for Program-
mable Instruments) command set.
This makes learning the commands
easy, because they are the same for-
mat as all other SCPI instruments.
The resulting code is virtually self-
documenting, and therefore easier
to troubleshoot and modify in the
future. Plug-n-Play drivers are also
available to help you to integrate the
loads into your standard software
packages.
Make Measurements
Easily and Accurately
The 16-bit voltage, current and
power measurement system provides
both accuracy and convenience. The
alternative is using a dmm (digital
multimeter) and MUX (multiplexer)
along with a precision current shunt
and a lot of extra wiring. Avoiding
this complexity increases system
reliability and makes the system
easier to design and support.
Current measurements in particular
are more consistently accurate using
the electronic load’s internal system,
because the wiring associated with
an external precision current shunt
may pick up noise.
Measure with all load modules simulta-
neously: Testing multiple-output dc
power supplies and dc-dc converters
can be very time consuming if each
output must be tested sequentially.
If measurements are being made
through a MUX using one DMM,
this is what will happen. Using the
built-in measurement capabilities of
the N3300A electronic loads, all out-
puts can be measured simultane-
ously. Alternatively, multiple single
output power sources can be tested
simultaneously.
Measure voltage and current
simultaneously: The N3300A
measurement system has individual
but linked current and voltage mea-
surement systems. This means that
voltage and current measurements
are taken exactly simultaneously,
which gives a true picture of the
power supply under test’s output at
a particular moment in time. Some
other electronic loads which feature
internal measurement systems
actually take current and voltage
measurements sequentially, and
therefore do not give as accurate
a picture of momentary power.
Observe transient behavior using wave-
form digitization: Transient response
and other dynamic tests often require
an oscilloscope. The N3300A has a
flexible waveform digitizer with a
4096 data point buffer for voltage
and a 4096 data point buffer for
current. Under many circumstances,
this internal digitizer will be ade-
quate for power supply test needs.
Current and voltage are digitized
simultaneously, and the sampling
rate and sample window are pro-
grammable. Some analysis functions
are provided, including RMS, max
and min.
Multiple-Input: 150 W to 600 W (Continued)
Power Products Catalog 2002-2003 For more detailed specifications see the product manual at www.agilent.com/find/power
Agilent dc Electronic Loads maximize throughput with real-life loading conditions