Atec Noiseken-ESS-2000 - Manual (Page 12)

Electrostatic Discharge Simulator
IEC61000-4-2 Standard
■ EXECUTION OF THE TEST
● Direct application of discharges to the EUT
The test voltage shall be increased from the minimum to the
selected test level. The test shall be performed with single
discharges. On selected points at least ten discharges in the
most sensitive polarity shall be applied.
It may be necessary to carry out some investigatory or
preliminary testing to select the points at which discharges
are to be applied. This pretest may be done at a repetition
rate of 20 discharges per second or more.
The ESD gun shall be held perpendicular to the surface to
which the discharge is applied.
In the case of contact discharge, the tip of the discharge
electrode shall touch the EUT before the discharge switch is
operated.
In the case of air discharges, the round tip of the discharge
electrode shall be approached as fast as possible to touch
the EUT. While the discharge electrode approaching,
the discharge switch shall be maintained closed until a
discharge occurs.
● Indirect application of the discharge:
Discharges to objects placed or installed near the EUT shall
be simulated by applying the discharges to a coupling plane
in the contact discharge mode.
● Horizontal coupling plane: At least 10 single discharges in
the most sensitive polarity shall be applied to the edge of the
plane opposite the center point of the EUT and 0.1m from
the front of the EUT. The ESD gun shall be kept horizontal
and perpendicular to the front edge line of the plane.
● Vertical coupling plane: At least 10 single discharges in
the most sensitive polarity shall be applied to the center of
one vertical edge of the coupling plane. The coupling plane
shall be placed parallel to, and positioned at a distance of 0.1
m from, the EUT. Discharges shall be applied with sufficient
different positions such that the four faces of the EUT are
completely illuminated.
■ ESD GENERATOR SCHEMATIC AND REQUIRED PERFORMANCE
● Circuit Diagram
NOISE LABORATORY CO., LTD.
1-4-4, Chiyoda, Sagamihara City,
Kanagawa Pref., 229-0037 Japan
Tel: +81(0)42-712-2051 Fax: +81(0)42-712-2050
http://www.noiseken.co.jp/
E-mail: sales
@ noiseken.com
Rch Rd
V Cs
Capacitance Cs: 150pF
Discharge resistance Rd: 330Ω
Charging resistance Rch: 50-100MΩ
Output voltage V: Contact 8kV max.
Air 15kV max.
Holding time: at least 5 s
Discharge, mode of operation: Single discharge
(time between successive discharges at least 1 s)
● ESD typical output waveform
I
Ipeak
100%
90%
Iat30ns
Iat60ns
10%
30ns
60ns
tr=0.7 to 1ns
I 1
I 2
t
● Severity Level
Level Contact Discharge Air discharge
1 2kV 2kV
2 4kV 4kV
3 6kV 8kV
4 8kV 15kV
X 1) Special Special
1) X is an open level.
● Designs and specifications are subject to change without notice.
● Waveform parameters
Level Voltage
kV
First peak current
(±10%)Ip
Rise time
tr
Current at 30ns
(±30%) I
1
Current at 60ns
(±30%) I
2
1 2 7.5A 0.7～1ns 4A 2A
2 4 15A 0.7～1ns 8A 4A
3 6 22.5A 0.7～1ns 12A 6A
4 8 30A 0.7～1ns 16A 8A
0407-07K N