SCS 770758 Installation, Operation And Maintenance Manual Download Page 3

TB-9094

 Page 3 of 7

© 2019 DESCO INDUSTRIES INC

Employee Owned

SCS 

- 926 JR Industrial Drive, Sanford, NC 27332

East: (919) 718-0000 | West: (909) 627-9634 • Website: 

StaticControl.com

Installation

TESTER CONFIGURATION

The resistance limits for footwear and wrist strap 

tests are controlled by the DIP switches located on 

the left side of the Dual Combination Tester. Use the 

following tables for the DIP switch settings and their 

corresponding test values.

Footwear Resistance

DIP switches 1 and 2 control the HIGH test limit.

Switch 1 Switch 2 HIGH Limit Resistance

ON

ON

10 Megohms (1 x 10

7

)

OFF

OFF

35 Megohms (3.5 x 10

7

)

ON

OFF

100 Megohms (1 x 10

8

)

OFF

ON

1 Gigohm (1 x 10

9

)

DIP switches 3 and 4 control the LOW test limit.

Switch 3 Switch 4 LOW Limit Resistance

OFF

OFF

footwear test disabled

ON

OFF

100 Kilohms (1 x 10

5

)

OFF

ON

750 Kilohms (7.5 x 10

5

)

default setting

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.

Switch 5 Switch 6 HIGH Limit Resistance

OFF

OFF

wrist strap test disabled

ON

ON

10 Megohms (1 x 10

7

)

ON

OFF

35 Megohms (3.5 x 10

7

)

default setting

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.

5.  Insert the ground cord’s banana plug into the 

ground jack located at the bottom of the tester. 

Connect ground cord’s ring terminal to equipment 

ground. This connection will remove any static 

charge from the user before the test.

 NOTE: Failure 

to correctly ground the Dual Combination Tester 

may result in damage not covered under warranty.

 

6.  Power the Dual Combination Tester with the power 

adapter.

INSTALLING THE DUAL COMBINATION TESTER

1.  Mount the tester at the desired location using the 

four mounting holes located in the corners of the 

yellow mounting plate. 

2.  Set the dual foot plate below the tester. 
3.  Insert one end of the foot plate cord into the stereo 

jack located at the bottom of the tester. Insert the 

opposite end of the cord into the stereo jack located 

on the underside of the dual foot plate. 

4.  Use the guides located on the underside of the dual 

foot plate to route the cord either out the top or the 

side. This will prevent the foot plate cord from being 

accidentally tripped and unplugged. 

Figure 3. Routing the foot plate cord through the top

Figure 4. Routing the foot plate cord through the side

Summary of Contents for 770758

Page 1: ...Combination Tester 770751 Limit Comparator 770752 Power Adapter 100 240 VAC Input 12 VDC 0 5 A Output All Plugs Per ANSI ESD S20 20 section 7 3 A Compliance Verification Plan shall be established to e...

Page 2: ...rd here to test your wrist strap F Dual Wire Wrist Strap Jack Insert your dual wire wrist cord here to test your wrist strap G Wrist Strap Status LEDs Displays the wrist strap test results H Relay Ter...

Page 3: ...ON 10 Megohms 1 x 107 ON OFF 35 Megohms 3 5 x 107 default setting 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 i...

Page 4: ...Secure the backplate using the two Phillips head screws and nuts 4 Plug the ground cord into the ground jack located on the bottom of the tester and connect the ring terminal to equipment ground This...

Page 5: ...onding jack located on the face of the Dual Combination Tester Place one foot on each foot plate 3 To begin the test use your finger to bridge the test switch s inner and outer contacts The blue stand...

Page 6: ...to ensure that they are being worn correctly and or need to be replaced NOTE Failures may be caused by dry skin or minimal sweat layer For wrist straps try using an approved dissipative hand lotion s...

Page 7: ...bs 2 5 kg Maintenance To maintain optimum performance cleaning should be performed on a regular basis Use a minimum of 80 Isopropyl alcohol to clean the foot plate and test switch Other cleaners are s...

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