EM Test esd NX30
Instruction Manual V 1.00.7 19 / 33
6.3.5 Repetition
The repetition button takes you into the menu to select either single pulses or a repetition rate from 0.5 to 25 Hz in air dis-
charge, or from 0.5 to 20 Hz in contact discharge mode.
Four further repetition modes are available that trigger pulses with a statistical distribution over a specified period:
Random P: 1 – 9999 pulses are triggered with a statistically distributed repetition rate ranging from a minimum of > 20 ms to
a maximum repetition rate of < 2000 ms.
Random T: Pulses are triggered during a period of 1 – 9999 seconds with a statistically distributed repetition rate ranging
from a minimum of > 20 ms to a maximum repetition rate of < 2000 ms.
Free Adjust: For some specific requirements like R&D jobs or product standards, the prestored repetition times provided in
Hz may not match all needs. Allows entering values between 0.04 up to 300.00 s in 0.01 s steps.
6.3.6 Discharge Network
Depending on mounted tip the sign shows the actual discharge-mode AD (air discharge) or CD (contact discharge)
The R/C values for the relevant network are also shown. The corresponding value is automatically loaded.
Air-discharge = round test tip
Contact-discharge = sharp point test tip
6.3.7 DUT Discharge Mode
The DUT discharge mode sets if an internal or external discharge should be used. For most users, Internal is correct.
A simple tap of the various timings will select the value, enabling the user to imput the time with the numeric keypad.
• Ts “shoot”. This is the minimum time that is used to shoot a pulse.
In contact discharge mode, this is quite precise, however in air discharge mode, the gun will wait up to a maximum
of 30s to allow the user to approach, and make contact to the DUT.
As soon as a valid discharge is detected, the discharge relay will go open circuit.
• Td “discharge” – the time used to discharge the DUT. During this time, the DUT will be discharged.
If internal mode is chosen in settings, the tip must remain in contact to the DUT to discharge any remaining energy
stored in the DUT.
• Tr “repetition”
The waiting time before the next discharge. The discharge relay is open circuit during this time.
• ON/OFF sets the DUT discharge function to on or off. This will take you immediately back to the home screen.
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