Figure 3. Stationary installation of the
Combo Tester
Operation
The Combo Tester can be operated either on
battery or AC power. The unit comes
equipped with a 9 volt alkaline battery. For
AC operation, plug the optional AC adapter
into the mini phone jack located on the
upper left hand corner of the tester. AC
adapters are sold separately as item 41228
(120 volt) or 41229 (220 volt).
LOW BATTERY INDICATOR
The Combo Tester includes a low battery
indicator alarm circuit. If both the audible
alarm and indicator LED turn on during use,
discontinue testing and replace the battery.
The tester will continue to operate with a
weak battery, but results should not be
considered accurate.
The battery can be easily replaced by
removing the battery compartment cover on
the back of the unit and installing a new 9
volt battery.
Figure 4. Replacing the battery
General Instructions
In the following test configurations, the
41201 can be used to test wrist straps while
they are worn. Models 41205 and 41203
will also allow the user to test footwear.
Insertion of the banana plug on the wrist
strap cord activates the wrist strap tester
circuit and deactivates the footwear test
circuit.
WRIST STRAP TESTING WITH
MODEL 41201
This test safely checks that a continuous
path between the operator, wrist strap and
ground cord exists.
A. While wearing the wrist strap, plug the
banana plug end of the cord into the jack on
the face of the unit.
B. Press rocker switch toward “WRIST
CORD”.
C. Press the test button so that the unit
activates. Hold down for 2-3 seconds while
flexing coil cord area near resistor.
Note:
Often the initial intermittency will be failure
of strain relief connection to resistor as
simulated by ESD S1.1-1998 paragraph 5.7.
Bending Life Test.
Note:
DO NOT TOUCH ANY OTHER
METAL WHILE PERFORMING TEST.
Figure 5. Testing of wrist strap grounding
assemblies.
D. Lighting of the green “PASS” LED
indicates that the wrist strap and ground
cord assemblies are functioning properly.
E. If either red “FAIL LO” or “FAIL HI”
LEDs light and the audible indicator sounds,
the wrist strap wearer should check the wrist
strap assembly immediately.
PS-2057
Page 2 of 4
TESTING FOOT GROUNDING
DEVICES
In order to test footwear you will need the
model 41205 or 41203 Combo Tester. The
following instructions are intended for use
while wearing foot grounding devices.
When testing conductive shoes, or foot
grounders worn on both feet, test each foot
separately to ensure proper operation and
complete protection.
A. Place the Foot Plate on the floor in front
of the Combo Tester.
B. Plug the plate’s ground cord into the
jack on the left hand side of the unit.
NOTE:
Steps A and B are not required with
the 41203.
Figure 6. Installing ground cord to
“footplate” jack.
C. Press the rocker switch toward
“FOOTPLATE”
D. Place one foot on the plate. If the floor is
conductive, lift the foot you are not testing
off of the floor during this test. Make sure
there is no cord plugged into the “WRIST
CORD” jack.
E. Press the test button so that the unit
activates. Hold for 2-3 seconds.
F. Lighting of the green “PASS” LED
indicates that the foot ground assemblies are
functioning properly.
Figure 7. Testing foot grounding devices
with 41205
.
© 2005 DESCO INDUSTRIES INC.
Employee Owned
ESD Systems.com • 432 Northboro Road Central Marlboro, MA 01752-1823 • (508) 485-7390 • Fax (508) 480-0257 • Web Site: http://www.esdsystems.com
