Atec Agilent-N3300A User Manual

Agilent N3300 Series DC Electronic Loads
Data Sheet
Increase your manufacturing test throughput with fast electronic loads
• Increase test system throughput
• Lower cost of ownership
• Decrease system development time
• Increase system flexibility
• Stable operation down to zero volts
• DC connection terminal for ATE applications
Increase Test Throughput
Today’s high volume manufacturing requires optimization of test system throughput, to maximize production volume without increasing floorspace. The N3300 Series electronic loads can help you in a number of ways to achieve this goal.
Reduced command processing time:
Commands are processed more than 10 times faster than previous electronic loads.
Automatically execute stored command sequences: “Lists” of
downloaded command sequences can execute independent of the computer, greatly reducing the electronic load command processing time and com­puter interaction time during product testing.
Programmable delay allows for either simultaneous or sequential load changes: This is the most
multiple output DC power supplies, simulating real-life loading patterns, with a minimum of programming commands.
Buffer measurement data: Voltage,
current, and power measurements can be buffered for later readback to the computer, reducing computer interaction.
Control measurement speed vs. accuracy: Decrease the number of
measurement samples to achieve greater measurement speed, or increase the number of samples to achieve higher measurement accu­racy. You can optimize your measure­ments for each test.
Control rising and falling slew rates separately: Reduce rate of loading
change when necessary for DUT stability or to simulate real life condi­tions, but otherwise change load values at maximum rate.
Increase System Flexibility…for Both Present and Future Requirements
Most power supply and battery charger test systems designed today need to test a variety of products and/or assemblies. In the future, additional products or assemblies may be needed. A flexible family of electronic loads makes present system design and future growth much easier.
Test low voltage power supplies:
The N3300 Series electronic loads operate with full stability down to zero volts. Many other electronic loads available today have been found to become unstable in the operating region below one volt. When design­ing power supply test platforms, the trend towards lower voltage require­ments should be taken into account. Refer to the specification and supplemental characteristic tables for details of lower voltage operating characteristics.
Choose DC load connection method:
Automatic test systems need consistency and reliability. Option UJ1 8 mm screw connectors provide a simple screw onto which your wires, terminated with insulated ring terminals, may be securely mounted. This optional connector is specifically designed for test systems. Wires may exit the plastic cover in any direction, and multiple wires may be placed on each screw terminal for easy parallel load connections. Up to AWG 4 wire may be used.
Applications which require repeated connections/disconnections are bet­ter suited to the standard connector. The standard connector accepts an unterminated wire, and may be hand­tightened. This connector is specifi­cally designed for bench applications and short-term automated tests.
Standard DC connectors
Option UJ1 8 mm screw connectors
Design a system to test a variety of products: This series consists of
2 mainframes and 6 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 6 different modules can be configured 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 additional current sinking capability.
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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 program­ming and monitoring ports for those applications that utilize nonstandard 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 Programmable Instruments) com­mand set. This makes learning the commands easy, because they are the same format 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 simultaneously: Testing multiple
output DC power supplies and DC to 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 N3300 electronic loads, all outputs can be measured simultaneously. Alternatively, multiple single output power sources can be tested simultaneously.
Observe transient behavior using waveform digitization: Transient
response and other dynamic tests often require an oscilloscope. The N3300 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 adequate for power supply test needs. Current and voltage are digitized simultaneously, and the sampling rate and sample window are programmable. Some analysis functions are provided, including RMS, max and min.
Measure voltage and current simultaneously: The N3300 measure-
ment system has individual but linked current and voltage measurement 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.
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