TB-3037 Page 2 of 4
Features and Components
C. Resistance Measurement LEDs:
The resistance is
measured in ohms and read as 10EX ±1/2 decade where X
is the range illuminated on the checker.
D. Low Battery LED:
When illuminated, this LED indicates
when the battery needs to be replaced. Do not use the
Surface Resistance Checker when this LED is illuminated.
E. Test Contact:
Use this contact area to make a surface
resistance measurement. Press and hold until one of the
Resistance Measurement LEDs remains illuminated.
F. Battery Compartment:
Remove the cover to allow
access to the 9V battery compartment.
G. Parallel Electrodes:
Be sure to position the Electrode
Toggle Switch to “INTERNAL” when choosing to make a
measurement using the parallel electrodes built-in on the
back of the Surface Resistance Checker.
Operation
USING THE INTERNAL PARALLEL ELECTRODES
MEASURE RESISTANCE POINT-TO-POINT (RTT) ON
THE SURFACE
• Do not clean the surface prior to testing
• Remove all items from the surface that may interfere with
the test
• ESD sensitive devices should also be removed
• Place the Surface Resistance Checker on the most
commonly used portion of the surface (2” from any edge,
3” from any groundable point)
• Toggle the Electrode Switch located at the top of the
Surface Resistance Checker to “INTERNAL”
• Press and hold the test contact until the measurement is
displayed
• If the measurement is outside acceptable limits, clean the
surface and re-test to determine if the cause of failure is
an insulative dirt layer or the surface material.
NOTE: For worksurfaces, use Desco Item#
10435
Reztore™ Antistatic Surface and Mat Cleaner or other
silicone-free ESD cleaner. Be sure the surface is dry before
testing.
© 2009 DESCO INDUSTRIES INC.
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Fax (781) 575-0172 • Website:
Desco.com
Figure 3. Using the internal parallel electrodes to measure
surface resistance
Figure 2. Surface Resistance Checker features and
components
C
D
E
F
G
TOP VIEW
FRONT VIEW
REAR VIEW
A. Electrode Banana Jacks:
Insert the test leads from the
optional 5 pound electrodes here.
B. Electrode Toggle Switch:
Position the switch to the
left (“INTERNAL”) to measure using the built-in parallel
electrodes on the back of the Surface Resistance Checker.
Position the switch to the right (“EXTERNAL”) to measure
using one or two of the optional 5 pound electrodes.
B
A
electronic components distributor
