50
Disable (OFF) input: Disconnect the short between the two pins.
Note: The external analog control does not have to be turned ON from the menu for
these pins to function as intended. To avoid accidentally turning ON the load’s
input, keep these pins opened with nothing connected when external On/Off
control is not used or needed.
Voltage Fault Indicator
The terminal pin labeled VF in the rear panel outputs a 5 VDC signal under normal operations.
When OVP, LRV, or RRV conditions occur, the pin will output 0 VDC to indicate the protection
trip.
Current Monitor
The rear panel has a BNC output labeled I Monitor for current monitoring. It will output a 0-10
V analog signal which reflects 0 - full range of the input current accordingly. You can connect an
external voltmeter or an oscilloscope to display the input current’s change.
3.5 Short Operation
The electronic load can simulate a short circuit at its input. During front panel operation, press
( ) and then to switch the short on/off state. Short operation will not affect the
present setting. When turning off the short state, the load returns to the original set state.
The actual value of the electronic load in short operation depends on the mode and range that
is active when the short is turned on. In CC or CR mode, the maximum short current is typically
110% of the current range. In CV mode, short means setting the load’s constant voltage to be 0
V. In short operation mode, you can measure the maximum short current (Amax) or DC current
(ADC) of the power source to be measured. You can set this function via the Configuration
menu.
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