TECHNICAL BULLETIN VER-29205 Limit Comparator Made in the Operation Instructions United States of America Packaging 1 Limit Comparator 2 Test Leads with Banana Plug Terminals 1 RJ11 Foot Plate Cable 1 Certificate of Calibration Tester Configuration The resistance limits for footwear and wrist strap tests are controlled by the DIP switches located on the sides of the tester. Use the following tables for the DIP switch settings and their corresponding test values. EMIT SMARTLOG V4, DUAL INDEPENDENT TESTER FOOTWEAR RESISTANCE DIP switches 1 and 2 control the HIGH test limit. DIP switches 3 and 4 control the LOW test limit. NOTE: At 1 Gigohm high limit resistance, a dirty foot plate could result in a false pass. Be sure to keep the Figure 1. VER-29205 Limit Comparator foot plate clean particularly when using this setting. This setting is not suitable for relative humidity greater Description than 50%. Frequency of recalibration should be based on the critical WRIST STRAP RESISTANCE nature of those ESD sensitive items handled and the risk DIP switches 5 and 6 control the HIGH test limit. of failure for the ESD protective equipment and materials. DIP switch 5 must be ON (default setting) for the wrist In general, Vermason recommends that calibration be strap test to be active. The wrist strap test will be performed annually. disabled if DIP switch 5 is set to OFF. Use the Vermason VER-29205 Limit Comparator to perform The LOW limit for the wrist strap test is set to 1 Megohm periodic testing (once every 6-12 months) of the EMIT and cannot be modified by the user. SmartLog V4, SmartLog V5 and Dual Independent Testers. It may also be used to verify the calibration of the EMIT SMARTLOG V5 Vermason Combo Tester X3. The Limit Comparator can VERMASON COMBO TESTER X3 be used on the shop floor within a few minutes virtually eliminating downtime, verifying that the tester is operating FOOTWEAR RESISTANCE within tolerances. DIP switches 1 and 2 control the HIGH test limit. DIP switches 3 and 4 control the LOW test limit. NOTE: At 1 Gigohm high limit resistance, a dirty foot plate could result in a false pass. Be sure to keep the foot plate clean particularly when using this setting. This setting is not suitable for relative humidity greater than 50%. WRIST STRAP RESISTANCE DIP switches 5 and 6 control the HIGH test limit. DIP switch 5 must be ON (default setting) for the wrist strap test to be active. The wrist strap test will be disabled if DIP switch 5 is set to OFF. The LOW limit for the wrist strap test is set to 750 Kilohms and cannot be modified by the user. 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 2016 Vermason VER-29205 Page 1 of 4 March 2016Operation Switch 3 Switch 4 LOW Limit Resistance EMIT SMARTLOG V4 AND DUAL INDEPENDENT 5 ON OFF 100 Kilohms (1 x 10 ) TESTER 6 OFF ON 1 Megohm (1 x 10 ) Testing the Wrist Strap Circuit 1. Plug the two included test leads into each yellow banana default setting jack located at the top of the Limit Comparator. 5. Select 1M PASS on the Limit Comparator and repeat 2. Connect one of the test leads from the Limit Comparator the test. The tester should indicate a wrist strap PASS to the SINGLE-WIRE jack located on the face of the condition. tester. Connect the other lead from the Limit Comparator to the ground jack located on the bottom of the tester. 6. Select either the 10M PASS or 35M PASS setting, whichever one is appropriate, on the Limit Comparator and repeat the test. The tester should indicate a wrist strap PASS condition. Left Side View Switch 5 Switch 6 HIGH Limit Resistance OFF OFF wrist strap test disabled 7 Figure 2. Locating the DIP switch on the SmartLog V4 ON ON 10 Megohms (1 x 10 ) Tester, Dual Independent Tester and Combo Tester X3 7 ON OFF 35 Megohms (3.5 x 10 ) default USA setting default Europe & Asia setting 7. Select either the 10M HIGH or 35M HIGH setting, whichever one is appropriate, on the Limit Comparator and repeat the test. The tester should indicate a wrist strap FAIL HIGH condition. Testing the Footwear Circuit 1. Insert the Limit Comparators stereo plug into the jack labeled FOOT PLATE on the bottom of the tester. 2. Select the appropriate FAIL LOW setting on the Limit Comparator. 3. Touch and hold the test plate of the tester until the test is completed. The tester should indicate a FAIL LOW condition for both feet. Switch 1 Switch 2 HIGH Limit Resistance 7 ON ON 10 Megohms (1 x 10 ) 7 Right Side View OFF OFF 35 Megohms (3.5 x 10 ) 8 ON OFF 100 Megohms (1 x 10 ) Figure 3. Locating the DIP switch on the SmartLog V5 9 OFF ON 1 Gigohm (1 x 10 ) 3. Select 1M LOW with the Limit Comparators rotary Switch 3 Switch 4 LOW Limit Resistance switch. 5 ON OFF 100 Kilohms (1 x 10 ) 4. Touch and hold the test plate of the tester until the test 5 OFF ON 750 Kilohms (7.5 x 10 ) is completed. The tester should indicate a wrist strap FAIL LOW condition. default setting Switch 1 Switch 2 HIGH Limit Resistance 4. Select the appropriate PASS LOW setting on the Limit 7 ON ON 10 Megohms (1 x 10 ) Comparator and repeat the test. The tester should indicate a PASS condition for both feet. 7 OFF OFF 35 Megohms (3.5 x 10 ) 8 5. Select the appropriate PASS HIGH setting on the Limit ON OFF 100 Megohms (1 x 10 ) Comparator and repeat the test. The tester should 9 OFF ON 1 Gigohm (1 X 10 ) indicate a PASS condition for both feet. 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 VER-29205 Page 2 of 4 2016 Vermason