Desco TB-6120 Installation Manual

TB-6120 January 2009 Page 1 of 2

Static Control Systems Analyzer
Recommended Set-Up

ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • [phone] • Fax [phone] • Website: ESDSystems.com

INSTRUCTIONS MANUAL TB-6120

Made in America

© 2009 DESCO INDUSTRIES INC.

Employee Owned

Figure 1. 62150

Static Control Systems Analyzer

Resistance R1 through R6, forms a series-connected
closed loop. If this series resistance is greater than 0.8
megohms and less than 10 megohms or 100
megohms, depending on range switch position, a
"safe" condition will be indicated.

It is recommended that the analyzer ground and the
operator wrist cord ground not be a common
connection. By utilizing separate grounding points, the
integrity of the ground connections is also being
checked during analyzer operation.

EARTH
GROUND

Water Pipe, Condult
Or Ground Bus

R1= 1 Megohm resistor ±5% molded in ground

cord

R2= Skin contact to wrist band may be high on

some operator's up to 1 Megohm
R3= Operator's body resistance usually low about 1K
R4= Contact resistance, analyzer ground cord to

ground should be almost 0 if good connection

R6= Contact resistance, operator's cord to

ground should be almost 0 if good connection

Analyzer

R5

R4

R6

R1

R2

R3

Conductive
Table Mat
( <105 Ω / )

Conductive
Floor Mat
( <105 Ω / )

1 Meg

(or)

1 Meg

Ground

By pushing the button on the EN425, an operator can
check the wrist band, skin contact of wrist band, coil
cord, "CONDUCTIVE" table top, "CONDUCTIVE" floor
mat, heel straps, or any series combination of these
items to a maximum of 10 Meg. Ohms or 100 Meg.
Ohms. *

By definition, the term "CONDUCTIVE" used in the
following procedure, means equal to or less than 105
Ohms per square.

Refer to diagram above.

1. To check "CONDUCTIVE" Table Mat:
A. Place hand flat on mat while pressing Push-

To-Test button with other hand. (Operator NOT
wearing wrist cord) - safe should be indicated.

2. To check "CONDUCTIVE" Floor Mat:
A. Use procedure for testing table mat - OR
B. Have operator, wearing "CONDUCTIVE"

heel strap stand on floor mat and press Push-To-Test
button. (Operator NOT wearing, wrist cord) - safe
should be indicated.

ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • [phone] • Fax [phone] • Website: ESDSystems.com

TB-6120 Page 2 of 2

© 2009 DESCO INDUSTRIES INC.

Employee Owned

3.Automatic Low Battery Indicator
When Test button is pushed, red and yellow LED's on
at the same time indicate the battery voltage is less
than 7 volts and should be immediately replaced for
proper operation.

NOTE: If "CONDUCTIVE" table mat cord is connected
to the "CONDUCTIVE" floor mat (Shown as "OR"
condition above), use procedure 2B - safe should be
indicated.

* Depending on range switch position

Technical Support

ESD Systems
432 Northboro Road Central
Marlboro, MA 01752
Tel: [phone]
Fax: [phone]

NOTE: Unauthorized servicing or modifications to
your monitor will void the product warranty and may
create dangerous conditions. Servicing should be
performed only at the factory, or by a Semtronics
approved technician.

LIMITED WARRANTY

Semtronics expressly warrants that for a period of one
(1) year from the date of purchase, Semtronics
62150(EN425) will be free of defects in material (parts)
and workmanship (labor). Within the warranty period, a
unit will be tested, repaired, or replaced at our option,
free of charge. Call Customer Service at 909-627-8178
(Chino, CA) or 781-821-8370 (Canton, MA) for Return
Material Authorization (RMA) and proper shipping
instructions and address. Include a copy of your
original packing slip, invoice, or other proof of date of
purchase. Any unit under warranty should be shipped
prepaid to the Semtronics factory. Warranty
replacements will take approximately two weeks. If
your unit is out of warranty, Semtronics will quote
repair charges necessary to bring your unit up to
factory standards. Call Customer Service at 909-627­8178 for proper shipping instructions and address.
Ship your unit freight prepaid.

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 Semtronics 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.