Set Under-Current Protection - Cal Power IT-M3400 Series User Manual

Delay time
You can specify an OPP delay to prevent momentary output settings, DUT and
status changes from tripping the over-power protection. In most cases these
momentary conditions would not be considered an over-power protection fault,
and having an OPP condition disable the output when they occur would be a
nuisance. Specifying an OPP delay lets the OPP circuit ignore these
momentary changes during the specified delay period. Once the OPP delay
time has expired and the over-power condition persists, the output will shut
down.
Clear Over-Power Protection
When over-power protection occurs, the instrument responds as follows:
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To clear the over-power and return to normal operation, firstly remove the
conditions that caused the protection fault. Press [Esc] key (or send the
command PROTection:CLEar) to clear the protection status. The "Over Power
Protect" displayed in front panel is cleared and the instrument exits OPP status.

6.4 Set Under-Current Protection

Output under-current protection is for the DUT sensitive to the current under CC
mode, under-current protection function allows the user to enable the protection
and set a under-current limit (Level), delay time (Delay) and warm-up time (
Warm Up).
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Enable UCP
1. Press [Shift]+[R-set](Protect) to enter Protect menu interface.
2. Rotate the knob to select UCP and press [Enter] key to confirm.
3. rotate the knob to select On and press [Enter] key to confirm.
Instrument output is off;
The buzzer sounds;
The interface displays "Over Power Protect" and flashes;
Status register, the OP status bit is set to 1;
Enable UCP;
The output time exceeds the warm-up time;
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.
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Protect Function
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