Functions and Features
• The output current value is less than the set current protection point Level
and the period is greater than the set protection delay time Delay.
Delay time Delay — You can specify an UCP delay to prevent momentary
output settings, DUT and status changes from tripping the under-current pro-
tection. In most cases these momentary conditions would not be considered
an under-current protection fault, and having an UCP condition disable the
output when they occur would be a nuisance. Specifying an UCP delay lets
the UCP circuit ignore these momentary changes during the specified delay
period. Once the UCP delay time has expired and the under-current condi-
tion persists, the output will shut down.
When under-current protection occurs, the instrument responds as follows:
• Instrument output is off;
• The buzzer sounds intermittently;
• The interface displays “Under Current Protect” and flashes;
• Status register, the UC status bit is set to 1.
Enable UCP
1. Press [Shift]+[Recall] (Protect) to enter Protect menu interface.
2. Use left and right keys or rotate the knob to select UCP and press [Enter]
key to confirm.
3. Use left and right keys or rotate the knob to select On and press [Enter] key
to confirm.
4. Rotate the knob to adjust the under-current limit Level and press [Enter]
key to confirm.
5. Rotate the knob to adjust the delay time Delay and press [Enter] key to
confirm.
6. Rotate the knob to adjust the warm-up time Warm Up and press [Enter] key
to confirm.
7. Press [Esc] to exit the protection menu setting.
Clear Under-Current Protection
To clear the under-current and return to normal operation, firstly remove the
conditions that caused the protection fault. Press [Esc] key (or send the com-
mand PROTection:CLEar) to clear the protection status. The “Under Current
Protect” displayed in front panel is cleared and the instrument exits UCP status.
4.3.7 Over-Temperature Protection
To prevent damaging heat build-up and ensure specified performance, make
sure there is adequate ventilation and air flow around the instrument to ensure
Copyright © Itech Electronic Co., Ltd.
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