Schloder ESD User manual

User Manual
ESD Generators
SESD 216 I SESD 230

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Electrostatic Discharge
Generators
SESD 216 16,5 kV
SESD 230 30,0 kV
ATTENTION
This unit generates high voltages and is inherently dangerous. The local, national and all applicable safety
regulations must be obeyed for operation of this unit. The device must only be used by experienced electric
technicians (see VDE 0140) respectively through qualified operating personal (electrotechnical instructed
person). People using cardiac pacemakers should be removed from the test area.
Before using the generator please read this manual and the warnings to the safety points.
This generator contains a Li-Ion battery.
Please note also Section 5.13.1 “Note / Internal battery”
Scope of delivery:
Transport case with
▪ESD generator SESD 216 / 230
▪Charger with connecting cable
▪Test probes for air discharge (SESD 3020)
▪Test probes for contact discharge (SESD 3021)
▪Ground strap (SESD 231)
▪User manual

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Content
1Introduction .................................................................................................................5
2Safety Instructions........................................................................................................6
2.1 Symbols used ...............................................................................................................6
2.2 Safety Regulations........................................................................................................6
2.3 Impairment of safety....................................................................................................7
3ESD - Definition.............................................................................................................8
4Device functions ...........................................................................................................9
4.1 Front panel...................................................................................................................9
4.2 Casing.........................................................................................................................10
5Function description...................................................................................................11
5.1 ON / OFF - switch .......................................................................................................11
5.2 Output voltage adjust ................................................................................................11
5.3 Polarity switching.......................................................................................................11
5.4 Mode CON / AIR........................................................................................................11
5.4.1 Special function - contact control at Contact Discharge................................12
5.4.2 Special function –displaying of the real discharge voltage at AIR mode ......13
5.5 Repetition frequency .................................................................................................13
5.6 Counter Mode............................................................................................................13
5.6.1 Standard „Counter – Mode“ ..........................................................................13
5.6.2 Polarity changing during the „Counter-Mode“..............................................14
5.7 Continuous discharge.................................................................................................14
5.8 LCD - Display...............................................................................................................15
5.9 Trigger button ............................................................................................................15
5.10 Discharge return cable...............................................................................................15
5.11 Discharge electrodes CON / AIR.................................................................................15
5.12 Power supply..............................................................................................................16
5.13 Display battery charge ...............................................................................................16
5.13.1 Note / Internal battery...................................................................................16
5.14 Connector for a tripod ...............................................................................................16
5.15 Adjustment LCD –Display contrast............................................................................17
5.16 Serial number.............................................................................................................17
6RECALL –Test levels 1 –4 according to IEC/EN 61000-4-2 ...........................................18
6.1 Activation of the function ..........................................................................................18
6.2 Standard test in Counter mode..................................................................................18

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7Setup functions...........................................................................................................19
7.1 Activation of the function ..........................................................................................19
7.2Automatic test............................................................................................................19
7.3 Programming the automatic tests .............................................................................20
7.3.1 Parameters input ...........................................................................................20
7.3.2 Storage oft he parameters.............................................................................21
7.3.3 Clear entry......................................................................................................21
8Self-test –function test...............................................................................................22
8.1 Description of the self-test ........................................................................................22
8.2 Individual description of the steps.............................................................................23
8.2.1 Check of the power supply ............................................................................23
8.2.2 Check at positive polarity...............................................................................23
8.2.3 Check at negative polarity..............................................................................23
9Calibration..................................................................................................................24
9.1 Test equipment for the calibration procedure..........................................................24
9.2 Checking the ESD-pulse..............................................................................................24
10 Test setup...................................................................................................................24
11 Technical data.............................................................................................................25
12 Options.......................................................................................................................26
13 Schematic block diagram ............................................................................................26
14 Maintenance / calibration...........................................................................................27
15 Packing / transport .....................................................................................................27
16 Disposal......................................................................................................................27
17 Manufacturer .............................................................................................................27

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Important Note !
The approach to air discharge should be from a distance of at least 20 cm, otherwise there
is a risk of multiple discharges in single-shot mode (discharge voltage cannot build up com-
pletely and is recharged).
In the event of contact discharge, the pulses are not triggered if there is no contact (e.g.
painted or oxidized surface)! The display shows "No contact". This ensures that a discharge
process actually takes place in the event of contact discharge.
1Introduction
The ESD simulator SESD 216 / SESD 230 is suitable for performing EMC tests on systems and equipment in
accordance with the IEC / EN 61000-4 Part 2 standard. This test is concerned with the immunity behavior to
electrostatic discharge. Depending on the DUT and test setup, two test procedures are to be used:
a) Air Discharge
The discharge electrode with the domed point should first be connected to the SESD. The high voltage dis-
charge of the generator is into an air gap. The very short rise time of each single pulse generates a wide RF
spectrum and interference’s. This can be the reason for an influenced EUT.
b) Contact Discharge
The discharge electrode with a sharp point is connected to the EUT. The discharge switch is operated by a
vacuum relay allowing a better reproduction of the test results.
If the probe is not in electrical contact with the EUT (e.g. varnished or oxidized surfaces) there will be no
triggering of impulses. The display will show "NO contact". This feature makes sure that a discharge took
place in the contact discharge mode
The concept of the ESD generator is designed to work in battery mode. The included power supply unit en-
ables timely charging or "mains operation". In addition to the controlled contact discharge, value was also
placed on a clear and simple operation of the generator.
Automatic test sequences are programmable and easy to activate.

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2Safety Instructions
2.1 Symbols used
Note
This symbol points out additional hints, application tips or information.
Warning / Danger
is used if not following the instructions may cause personal injury, material damage or
environmental damage.
Danger is used if not following the instructions may result in danger of life. Regard these
instructions and take care of your actions.
Electric shock
This symbol warns against danger for life caused by electric shock. Regard these instruc-
tions and take care of your actions.
2.2 Safety Regulations
The SESD 216 and SESD 230 test generators generate high voltages of up to 16,500 volts and up to 30,000
volts respectively. The energy of this high voltage is so limited that it is normally not life-threatening for
humans. Nevertheless, consequential damage may possibly be caused by contact (e.g. shock, etc.).
The use of the ESD generator assumes, like all measurement tasks and verifications, that the local and branch
specific directions are considered. Precautions should be taken that any part that carries high voltage and
can be touched should be shielded. This is important with both the ESD Generator and the object under test.
The tests with the SESD generator on test specimens shall be carried out by a qualified electrician as defined
in DIN 570105 / VDE 0105 part 1 or VBG 4. Care must be taken to ensure that the power supply unit is
operated only with the appropriate protective grounded sockets; the breaking of the grounding connection
is not permitted. The housing and the grounding jack are connected to the protective conductor of the mains.
Attention is drawn to the observance of the accident prevention regulations "Electrical systems and equip-
ment" (VBG1 and VBG2) with implementing instructions.
Warning / Danger
While using the ESD generators it must be made sure that the ground / earth connection is
fastened at the generators ground and connected to earth potential.
It is not allowed to use the tripod connector for grounding!
.
Warning / Danger
The handling of the generator is only allowed to experienced and instructed persons ac-
cording to DIN 570105 / VDE 0105 part 1.
Persons with a cardiac pacemaker are not allowed to handle this unit.
.

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Electric shock !
We warn from untrained staff opening the unit. There is high voltage inside EVEN WHEN
SWITCHED OFF. The warranty will be void if the unit is opened.
The ESD generators SESD 216 and SESD 230 are according to its specifications designedonly forlaboratory
use in the industrial surrounding (tests in a Faraday’s cage).
2.3 Impairment of safety
If the unit has visible damage so that a save operation is no longer possible, it has to be set out of operation.
It has to be ensured against unauthorized usage. The unit has to be send immediately to the manufacture /
dealer with a description of the damage!
Warning / Danger
The absence of a protective earth connection presents a danger to the user and can also
destroy the power supply of the ESD generator. Damage to the power supply due to lack of
protective earth is not covered by the warranty.

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3ESD - Definition
Figure 1: Representation of the ESD pulse according to the standard
Test
level
Test voltage
Air discharge
Test voltage
Con discharge
Rise Time
„CON“
(25 %)
1. peak
current
(15 %)
Current after
30 ns
(30 %)
Current after
60 ns
(30 %)
1
2 kV
2 kV
0,8 ns
7,5 A
4 A
2 A
2
4 kV
4 kV
0,8 ns
15,0 A
8 A
4 A
3
8 kV
6 kV
0,8 ns
22,5 A
12 A
6 A
4
15 kV
8 kV
0,8 ns
30,0 A
16 A
8 A
X*
special
special
* Level „X“ is an open level.
Table 1: Severity level and waveform parameters at contact discharge

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4Device functions
4.1 Front panel
Nr.
Normal Mode
Setup Mode
[1]
On / Off
ON / OFF switch
[2]
Polarity
Polarity of the pulse,
positive and negative
Use
Use the adjusted
parameters
[3]
Con/Air
Mode CON / AIR
Contact discharge or air
discharge
→
Selection of various
parameters
[4]
Perm
Selection test level,
Continuous mode and
Setup - Mode
Escape
Back without saving the
adjusted parameters
[5]
Value
Potentiometer for
output voltage adjust
Value
Adjustment test level 1 –4
and pre-selection parame-
ters
[6]
Counter
Counter pre-selectable
Clear
Clear of the setup values
[7]
Rep. Freq.
Repetition frequency
Store
Store of the setup values
[8]
LCD Display
4 lines
8
5
7
1
6
4
3
2

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4.2 Casing
Figure 2: Housing functions
[9] Connector for an optical RS 232 converter
[10] Test tip for: a) AIR discharge b) Contact discharge
[11] Connector for the discharge return cable
[12] Trigger button
[13] Connector for the power supply
[14] Connector for a tripod
Technical drawing
14
44
14
4
13
9
14
4
11
44
14
4
12
44
14
4
10
14
4
All data in mm