Model 4431T Shielded Bag Test System - Operating Manual
6
D00003 Rev. K.
2.0 EQUIPMENT DESCRIPTION
The ETS Model 4431-T ESD Test System is supplied with a laptop computer and an oscilloscope as
shown in Figure 3-1.
Figure 3-1: Model 4431-T Shielded Bag Test
System
This is a turnkey system that performs the ANSI/ESD S11.31 shielding bag tests. The 4431 Discharge
Unit provide the correct discharge current pulse for both tests. The capacitive sensor detects the current
pulse and sends the signal(s) to the included oscilloscope for detection and display. Oscilloscope
waveform information may be sent to the included computer for processing, display, and calculation of
energy.
The Model 4431-T Shielded Bag Test System consists of the following components:
3.1 The 4431 Discharge Unit
High voltage power supply, adjustable from approximately 850 to 1,250 Volts DC with 3½-digit
LED display, allows the user to make minor corrections to obtain the specified discharge current
and energy.
Universal switching power supply, may be operated directly from 90 – 260 VAC, 50/60 Hz line
voltage (mains) with 0.5A resettable fuse that is reset by powering down the unit, and after
several seconds turning it back on.
Separate ON/OFF switches on the front panel for overall power and high voltage. Note:
Discharge only occurs if high voltage is ON.
A green LED point source indicates CHARGE (HV is ready).
