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TB-9057
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© 2020 DESCO INDUSTRIES INC
Employee Owned
Memory Recall Menu
R
S
Figure 7. Settings menu
R. Memory Slot Number:
Indicates the memory slot
number.
S. Resistance Measurement:
Indicates the resistance
measurement value for the respective memory slot.
Operation
General Guidelines
Use both 5-pound electrodes for Resistance
Point-to-Point (Rtt) measurements.
Use one 5-pound electrode, and connect the black
test lead to ground for Resistance-to-Ground (Rtg)
measurements.
Ensure that the item being measured is electrically
isolated (placed on an insulative surface). The meter will
measure the lowest resistance path.
The meter will automatically switch its test voltage from
10V to 100V when the measured resistance is 1 x 10
⁶
ohms or greater to meet the test procedure outlined in
ESD TR53.
Minimize crossing the test leads when possible.
When using 5-pound electrodes:
• Place them no closer than 2" from the edge of the
surface being measured.
• Place them no closer than 3" to any groundable
point.
• Place them about 10" apart from each other for Rtt
measurements of a worksurface.
• Place them about 3' apart from each other for Rtt
measurement of a floor.
Preferable electrode placements include:
• Most commonly used area of a surface
• Most worn area
• Center of surface
• Furthest area from a grounded point
If the surface to be measured has sections (i.e. floor
tiles, garment panels), place the 5-pound electrodes on
different sections for Rtt measurements.
Clean the material’s surface for test lab measurements,
but do not clean the surface for materials that are
already installed. Only clean and re-test the installed
material if failure occurs.
Measure Resistance-to-Ground (Rtg)
Test Procedure in accordance with ANSI/ESD S4.1
section 6.4 Periodic Worksurface Testing:
1. Do not clean the surface.
2. Remove from the surface only those items that
might interfere with the test. ESD sensitive devices
shall also be removed.
3. Connect the black test lead to a grounded point.
4. Connect the red test lead to one 5-pound electrode,
and place the electrode on the furthest convenient
point on the surface.
5. Push the red pushbutton to perform a measurement.
Should the 15-second electrification period appear,
it may be bypassed by pushing the red pushbutton
a second time.
6. Push the right black pushbutton to save the
measurement, and apply an included measurement
location label if desired.
7. Perform additional measurements by placing the
electrode on the most commonly used or worn area.
Figure 9. Applying a measurement location label to the
edge of a workstation
Figure 8. Measuring the Resistance-to-Ground (Rtg) of a
worksurface mat
