Desco Combo Tester X3 Installation, Operation And Maintenance Manual Download Page 2

TB-3066

 Page 2 of 8

© 2017 DESCO INDUSTRIES, INC.

Employee Owned

DESCO WEST 

- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178

DESCO EAST 

- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: 

Desco.com

“Compliance verification should be performed prior to 

each use (daily, shift change, etc.). The accumulation 

of insulative materials may increase the foot grounder 

system resistance. If foot grounders are worn outside 

the ESD protected area testing for functionality 

before reentry to the ESD protected area should be 

considered.” (ESD SP9.2 APPENDIX B - Foot Grounder 

Usage Guidance)
“Compliance verification records shall be established 

and maintained to provide evidence of conformity to the 

technical requirements.” (ANSI/ESD S20.20 section 7.3)

Packaging

19278 COMBO TESTER X3

1  Combo Tester X3

1  Dual Foot Plate

1  Power Adapter, 12VDC, with interchangeable plugs 

  (North America, UK/Asia, Europe)

1  Foot Plate Cord, 6'

1  Ground Cord

1  Certificate of Calibration

19255 STAND, FOR COMBO TESTER X3

1 Pedestal

1 Baseplate

2  Socket Head Screws, 1/4-20 x 3/4"

2  Pan Head Screws, 10-32 x 5/8"

2  Nuts, 10-32

4  Pan Head Screws, #4 x 3/4"

Features and Components

Figure 2. Dual Combination Tester features and 

components

B

D

H I

1 2 3

A

C

G

F

E

J K

A. Test Limit DIP Switch:

 Use this DIP switch to 

configure the resistance limits of the tester. See the 

section titled “Tester Configuration” for more information.

B. Footwear Status LEDs

: Displays the footwear test 

results.

C. 12VDC Power Jack:

 Connect the included power 

adapter here to power the Combo Tester X3.

D. Steady-State Test Switch:

 Place and hold your 

finger here to begin the test.

E.  Single-Wire Wrist Strap Jack: 

Insert your 

single-wire wrist cord 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 Terminal:

 Can be integrated with electronic 

door locks, lights, buzzers, etc. It is capable of switching 

up to 1A @ 30VDC or .5A @ 125VAC.
Terminals 1 & 2 = Normally Closed

Terminals 2 & 3 = Normally Open
NOTE: All tests must pass in order for the relay to 

activate.

I.  Ground Jack:

 Insert the banana plug end of the 

included ground cord to this jack. Connect the ring 

terminal end of the cord to equipment ground. This 

connection will remove any static charge from the user 

before the test. 

NOTE: Failure to correctly ground the 

Combo Tester X3 may result in damage not covered 

under warranty.

J.  Foot Plate Jack:

 Connect one end of the foot plate 

cable cord and the other end to the dual foot plate.

K. Buzzer Volume Adjustment:

 Turn the trimpot 

clockwise to increase the buzzer volume and 

counter-clockwise to decrease the volume.

Summary of Contents for Combo Tester X3

Page 1: ...r Combo Tester X3 50755 ESD Glove Test Fixture 50424 Limit Comparator 19262 Power Adapter 100 240VAC Input 12VDC 0 5A Output All Plugs 50406 Replacement Dual Foot Plate Per ANSI ESD S20 20 section 7 3 A Compliance Verification Plan shall be established to ensure the Organization s fulfillment of the technical requirements of the ESD Control Program Plan Process monitoring measurements shall be con...

Page 2: ...Switch Use this DIP switch to configure the resistance limits of the tester See the section titled Tester Configuration for more information B Footwear Status LEDs Displays the footwear test results C 12VDC Power Jack Connect the included power adapter here to power the Combo Tester X3 D Steady State Test Switch Place and hold your finger here to begin the test E Single Wire Wrist Strap Jack Inser...

Page 3: ...it Resistance OFF OFF wrist strap test disabled ON 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 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 in...

Page 4: ...4 Align the backplate s two holes located above and below the tester to the two holes on the pedestal s mounting bracket Secure the backplate using the two included 10 32 pan head screws and nuts 5 Insert one end of the foot plate cord into the foot plate jack located at the bottom of the tester Connect the other end of the foot plate cord into the jack located on the dual foot plate 6 Insert the ...

Page 5: ...Access Control System and Combo Tester X3 Operation 1 A circling light around the test switch indicates when the Combo Tester X3 is on standby and ready to perform a test Access Control System NORMALLY OPEN RELAY DATA INPUT Proximity Reader Combo Tester X3 ACC INPUT Turnstile DATA LINES Figure 8 Wiring the Combo Tester X3 to an Access Control System normally open relay contacts shown above 2 While...

Page 6: ...st strap and footwear 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 such as Menda Reztore ESD Hand Lotion to your wrist prior to use Footwear test results can be improved by taking a short walk to build a sweat layer for better conductivity The Com...

Page 7: ...ar test limit 10 for all other test limits A periodic check using a precision resistance box can be used to verify proper operation The EMIT 50424 Limit Comparator is available for the convenient calibration of the Combo Tester X3 The Limit Comparator allows the customer to perform NIST traceable calibration on the Combo Tester X3 The Limit Comparator can be used on the shop floor within a few min...

Page 8: ...um relative humidity of 80 up to 85 F 30 C decreasing linearly to 50 85 F 30 C Maximum relative humidity of 50 at 1 gigohm setting Dimensions with mounting plate 11 35 x 7 75 x 1 47 288 mm x 197 mm x 37 mm Weight with mounting plate 1 2 lbs 0 5 kg Test Accuracy 20 for 1 gigohm footwear test limit 10 for all other test limits Test Switch Voltage 5 VDC open circuit Wrist Strap and Footwear Test Volt...

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