M470039-01 REV-F Page 57
THREE: LOCAL OPERATION
INTRODUCTION
The programmable electronic load provides powerful control capabilities, which consist of four operating modes
CV/CC/CR/CP. To complement and enhance these features, an internal transient generator is provided to simulate
dynamic operations. The Transient operation provides three programmable features, Transient frequency, Transient duty
cycle, and Transient slew rate. These features provide the user with precise and efficient control of the powerf ul eLoad to
handle the most diverse array of testing applications.
The programmable electronic load provides additional functions and capabilities, such as 256 point step programmable in
four user defined profiles, Cross Mode and Cross Range Operation and Short Operation. For battery testing, we provide
the “C” operand to help user in testing battery parameters without troublesome calculations.
The wide range of operating modes, accurate specifications, and advanced features provide the electronic load with
increased flexibility to work with different types of DUT and power source. Protection features such as Programmable
OVP, OCP, OPP, redundant OTP and hardware OP Protection are provided to protect the electronic load under different
load conditions. Please refer to the specifications to check the maximum input current, voltage, and power range in order
to safely test and obtain the best results.
Note: Protection Mode will shut off the Load Bank input, please take the necessary precaution.
VOLTAGE AND CURRENT METERING INFORMATION
The programmable electronic load uses a DAC with a guaranteed 14-bit resolution in the metering system and is active
once the unit is turn on. With sophisticated control circuits, the load can measure full-scale input voltages and currents
with Auto-Scaling capability. For example, when low voltages levels are applied, the display's decimal point will move
to accurately display the lower value. The same is true for the larger input values, the decimal will move to accurately
display the higher value. Refer to the Specifications for more programming and read back information.
OPERATING STATUS INFORMATION
All operating status information will be displayed when they become active. For example, when the Over-
voltage is tripped, the LCD module will display OVP.
SYMBOL TYPE DESCRIPTIONS
-----------------------------------------------------
UNR WARNING unregulated
OVP ALARM over voltage protection
UVP ALARM under voltage protection
OCP ALARM over current protection
UCP ALARM under current protection
OPP ALARM over power protection
UPP ALARM under power protection
OTP ALARM over temperature protection
UTT WARNING under temperature protection
OSC ALARM oscillation
LV WARNING low voltage
OV ALARM over voltage
OC ALARM over current
OP ALARM over power
RCP ALARM reverse current protection
RSF ALARM remote sense fault
UVL WARNING under voltage lockout
INT ALARM interlock
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