V Step
Selection of the voltage/step (V) parameter which is used in the menus Quick ZAP and Evaluation. Range 100V...9900V.
Default setting 1000V.
Vr/ V level discharge detection
After each discharge the residual voltage Vr within dito is measured. Due to the Vr/ Vlevel ratio dito knows if a discharge
occurred. Based on this parameter the operator can decide whether a discharge is accepted as a complete discharge or not.
In case of NO discharge a double beep will be generated. It is up to the user to decide on this discharge. The counter will
decrease in each case
REMARK: For a discharge detection, a voltage drop of approx. 200V is necessary. Slow voltage changes as RC discharges of
the module and recharge for voltage stabilization, will not trip the discharge detection.
Isolated EUT with small surface or already charged parts generates a small voltage drop who will not detect as discharge.
This effect happens more at lower test levels.
Range for Vr 20...80 , (10% step), minimum voltage is 2000V
This function can only be used for CD mode and AD mode when the rep rate is larger than 0.5s. In the case when the dis-
charge frequency is higher than 2Hz, it cannot be guaranteed that the test voltage ever reaches the preselected value. The
discharge voltage mostly is determined by the distance of the spark gap.
Vlevel = Test voltage
Vr = Residual voltage remaining at the discharge tip
after a discharge occurs
Vdetect = min. voltage drop for discharge detection
Calculated value for dV = V level-Vr
Warning Ur/U level ON / OFF
In case that dito is not discharged completely, an acoustic warning signal will appear. This may happen during testing of
insulated objects. Maybe the EUT was charged up due to the previous testing so that no more discharges can be made to
the EUT. Maybe only small partial discharges occur which may not be detected as a spark over by the operator. The func-
tion Vr/Vlevel can be used as spark over sensitivity detection.
AD Timer
Beep for release of next AD discharge. The AD timer is only an acoustic beep to indicate that the time between two pulses is
over and has no influence to the test procedure. The user must release the next pulse himself.
The AD timer starts after the pulse detection and deliver a Beep after the selected repetition time. At any time it is possible to
start with the next pulse.
Pre Discharge ON / OFF
A discharge by AD testing caused by a too short distance during the charging procedure will indicate a double beep with the
display Pre-Discharge. The counter will not count this discharge.
Default settings
U Step : 1.0kV
Ur/Ulevel : 80%
Ur/Ulevel : OFF
AD Timer : OFF
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