Limit Comparator for Testers
Installation and Operating Instructions
UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK
Phone: 0044 (0) 1462 672005, Fax: 0044 (0) 1462 670440 • e-mail: Service@Vermason.co.uk, Internet: Vermason.co.uk
TB-7541
December 2008 Page 1 of 3
© 2008 Vermason
Figure 1. Item 222693 Limit
Comparator
Description
Figure 2 shows the components of
the limit comparator.
Figure 2. Components of item
222693
Installation
Remove the Limit Comparator from
the carton and inspect for shipping
damage. Included with the unit are:
• 1 Limit Comparator
• 2 Test Leads, Banana to Banana
• 1 NIST Certificate of Calibration
Operation
Testing Footwear Circuit, refer to
figure 3.
To complete the footwear test, you
will need to test the low and high
limits. Refer to the dip setting on the
left side of the testers for footwear
test ranges. Manufacturer’s
suggested default test range is 1Meg
low and 35Meg high for the US and
Europe.
Do not power down tester, remove
stereo cable from bottom right jack of
tester labeled "FOOTPLATE" and
connect the stereo lead from model
222693 to the jack labeled
"FOOTPLATE".
Figure 3. Footwear test setup
Testing Low Circuit -
If the tester's
low range is set to 1Meg. Set the
knob on model 222693 to the "1M
LOW" position. Push the metal
button down on the tester and you
should get a red LED for the left and
right foot. Disregard the test result for
the wrist strap if the wrist strap circuit
is on.
Set the knob on model 222693 to
"1M Pass", push the metal button on
the tester and you should get a
green LED for the left and right of the
foot.
Testing High Circuit -
If the tester's
high range is 35Meg. Set the knob
on model 222693 to "35M PASS",
push the metal button on the tester
and you should get a green LED for
the left and right feet. Set the knob
on model 222693 to "35M HIGH",
push the metal button on the tester
and you should get a yellow LED for
both the left and right feet. If the limit
is set to 1Gig on the tester, test at
1Gig on model 222693, same for
10Meg and 100Meg.
Figure 4. Footwear test results
TECHNICAL BULLETIN TB-7541
Made in America
Footwear Low Fail
Footwear Low and High Pass
Footwear High Fail