Atec 4700 User Manual

High-Current DC Loads

4700 LXI SERIES

K 120V, 1kW/200A to 36kW/7200A
K 18 Voltage, Current, Power and

Timing Measurements

K Complex load profile playback
K Air cooling
K Touch-panel manual control

APPLICATION

4700 LXI Series Electronic Loads are designed for testing applications that require high-power and high-current
plus measurement of UUT dynamic performance. The Loads provide exceptional reliability combined with the
inherent simplicity and safety of air cooling. The 4700 Loads are controlled through either a manual touch-panel, a
LabVIEW soft-panel or an emPower™ Test Executive enabled automatic test station. Typical power conversion
products to be tested include higher-power DC supplies, telecom rectifiers, fuel cells and batteries.

EXTENDED INTERNAL MEASUREMENTS

The 4700 Loads eliminate the need for separate external
instruments and related switching to capture timing and other
dynamic measurements during UUT turn-on and turn-off. This
is accomplished by incorporating the task-essential features of
a DMM, DSO and Transient Generator. With this built-in
capability, the 4700 can rapidly generate engineering­characterization-like test information at faster test speeds with
the additional benefit of cost savings from fewer measurement
instruments, switches and interconnection wiring.

AUTO MODE

The 4700 contains a unique Auto Mode that provides
glitchless automatic switching between CR, CC, CV and CP
limits. Previously challenging tests that are now made
possible include turn-on into a CR load, confirming the
complete V-I curve for Lithium-Ion battery chargers, and
preventing device-under-test blowup should a protection
circuit fail.

Rise

Time

Settle Time

Turn-on Time

max

min

Peak Settle

Turn-on voltage & current measurements

Constant Current

Voltage

Constant Resistance

Overshoot

Current

Constant Voltage

Power supply turn-on voltage & current
waveforms in Auto Mode

Just as touch-panels have revolutionized the user
interface on mobile phones and GPS navigation
devices, they now are about to change electronic
power instruments. The old paradigm of controlling
electronic loads through knobs, meters and keypads
has been lacking for years. There are just too many
control & display functions to manage, especially
with the latest generation of smart loads that contain
digitized measurements for oscilloscope-like
waveform displays.

The new NHR PowerTouch panel eliminates those
limitations forever. The display is organized through

POWERTOUCH MANUAL CONTROL

Monitor Tab

Control tab

6 tabs, each providing a full screen with complete
control & display of related information. For instance,
a Monitor tab displays actual measurements either in
the local or remote-control mode. A Control tab
provides for setting voltage, current, resistance and
power as well as the CC, CV, CR and CP Operating
Modes. The unique Scope tab provides the ability to
zoom in on specific areas of interest as well as take
basic measurements on waveform captures. Those
waveform captures can then be saved on a SD card for
later review on a PC. Load user interfaces have never
been as comprehensive or easier to use as is now
possible with this touch-panel technology.

Scope Tab

Actual Size