16
Insulator
CT-1
18
gage
wire
Figure 6.0-1: Calibration set up to measure ESD pulse
6.1.2 EIA 541-1988 Voltage Differential
EIA 541 does not specify the discharge waveform characteristics.
However, it is implied that the waveform meets the requirements of
ANSI/ESD STM 5.1. To verify the discharge waveform of the Model 4431-
V, follow the procedure described in paragraph 4 in Section 5.1.1 above.
6.2 Product Testing per ANSI/ESD STM11.31
ANSI/ESD STM11.31 specifies an 8" x 10" bag size with the capacitive sensor
placed in the center. The Model 4431 incorporates adjustable stops to correctly
locate 4", 6", 8" and 10" bag lengths. For the standard size bag insert the two
red plastic stops into the third hole from the front of the unit.
Insert a test bag by sliding it over the capacitive sensor until it hits the stops.
Center the bag latterly as shown in Figure 6.0-2. Be sure the sensor is inside the
bag.
Figure 6.0-2: Test bag location
If testing manually, set the FUNCTION switch to MAN nJ.
Adjust the DPM for a reading of 1000 ±10 Volts.
