PS-2057
Page 4 of 4
Figure 13. Calibration of the Combo
Tester’s 750K to 100M range.
Resistance Value
Test Output
(+/- 5%)
675 Kilohm
Red (Fail Lo)
825 Kilohm
Green (Pass)
8.5 Megohm
Green (Pass)
11.5 Megohm
Red (Fail Hi)
750 Kilohm - 100 Megohm TEST
RANGE - FOOTWEAR
The following resistance should give the
display shown:
Resistance Value
Test Output
(+/- 20%)
675 Kilohm
Red (Fail Lo)
825 Kilohm
Green (Pass)
80 Megohm
Green (Pass)
120 Megohm
Red (Fail Hi)
To calibrate, simply test each resistance
value shown above which are included in
the 41230 Calibration Unit. Test across the
test button and “WRIST CORD” jack for
calibration of the 750 Kilohm - 10 Megohm
range. Test across the test button and
“FOOTPLATE” jack for calibration of the
750K - 100M range. Be sure rocker switch
is set correctly.
Figure 14. Calibration of the Combo
Tester 750 Kilohm to 10 Megohm range
with the model 41230
Observe the LED’s for the proper response
as indicated. Be sure to hold the cord at an
insulated point, so that resistance value is
not affected by the body. Should testing
reveal that the Tester is not functioning
properly, verify that the battery or power
supply is operating correctly.
Tester calibration can also be verified with
the use of discrete resistors and two banana-
to-alligator cords.
Adjustment
Detailed adjustment instructions are
available from the factory. Unauthorized
modifications will void the product
warranty. Servicing should be performed
only at the factory. See warranty section for
repair information.
Specifications
Wrist strap circuit
“Hi” Fail
Factory set at 11.5 Megohms
“Lo” Fail
Factory set at 675 Kilohms
Footground circuit
“Hi” Fail
Factory set at 120 Megohms
“Lo” Fail
Factory set at 675 Kilohms
General Characteristics
Power
9 volt battery or
optional AC power supply
Operation
Resistance bridge
Readout
Three LED’s & audible
alarm
Accuracy
±20%
Weight
12 pounds
Height
39 inches
Consider adding the 41201 to your list of
“test equipment [that] shall be selected to
make measuements of appropriate properties
of the technical requirements that are
incorportaed into the ESD program plan” as
required by paragraph 6.1.3.1 of ANSI/ESD
S20.20
Limited Warranty
ESD Systems.com expressly warrants that for a
period of one (1) year from the date of purchase,
our Combo Testers and compo- nents will be free of
defects in material (parts) and workman-ship (labor).
Within the warranty period, a unit will be tested,
repaired or replaced at our option, free of charge.
Call Customer Service at 508-485-7390 for a Return
Material Authorization (RMA) and proper shipping
instructions and address. You should include a copy
of your original packing slip, invoice, or other proof
of purchase date. Any unit under warranty should be
shipped prepaid to the ESD Systems.com factory.
Warranty repairs will take approximately two weeks.
If your unit is out of warranty, ESD Systems.com
will quote repair charges necessary to bring your
unit to factory standards. Call Customer Service at
508-485-7390 for a Return Material Authorization
(RMA) and proper shipping instructions and address.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS
MADE IN LIEU OF ALL OTHER PRODUCT
WARRANTIES, EXPRESSED AND IMPLIED,
INCLUDING MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE
WHICH ARE SPECIFICALLY DISCLAIMED.
The express warranty will not apply to defects or
damage due to accidents, neglect, misuse,
alterations, operator error, or failure to properly
maintain, clean or repair products.
Limit of Liability
In no event will ESD Systems.com or any seller be
responsible or liable for any injury, loss or damage,
direct or consequential, arising out of the use of or
the inability to use the product. Before using, users
shall determine the suitability of the product for their
intended use, and users assume all risk and liability
whatsoever in connection therewith.
432 NORTHBORO ROAD CENTRAL
MARLBORO, MA 01752-1823
PHONE (508) 485-7390
FAX (508) 480-0257
Visit our online
library of Tech Briefs:
http://www.esdsystems.com
DRILL PATTERN
FOR
COMBO TESTER
ACTUAL SIZE
© 2005 DESCO INDUSTRIES INC.
Employee Owned
