EM TEST UCS 500Mx - ESD Discharge Unit Details; Discharge Unit Components and Controls

EM TEST UCS 500 Series
Operating Manual V 3.05 54 / 57
12.4.4. Discharge Unit
1
2
4
ON
P18
ELECTROSTATIC DISCHARGE
150pF / 330 Ohm
Description of the Discharge Module
3
Discharge tip (exchangeable)
Testing ON/OFF Key
Connecting Cable to Control Unit
1 Connecting Cable to Control Unit
The connecting cable supplies and controls the discharge unit. There is a plug on each side of the cable so
that the connection between control unit and discharge unit is flexible.
Advantage: fast exchange of the discharge modules.
2 Testing On / Off Key
After all pre-adjustments of the control unit have been conducted, testing is released by pressing ON/OFF key.
For continuous respectively statistical testing consult the previous section.
3 Exchangeable discharge tip
Generally two different discharge tips are available:
- round electrode for air discharge
- sharp electrode for contact discharge
4 Description of Discharge Module
The data of the different discharge units are printed at this place.
Example: 150pF / 330 ohm.
Polarity Reversal (rear part)
Rearranging the polarity switch (turn 180°) enables to choose between positive and negative test voltage.
Opening the switch, high voltage is automatically turned off.
Discharge Return Cable (rear part)
The discharge module is connected with the discharge return cable to the earth reference plane.