DESCO 98221 Wave Distortion Monitor Verification Tester Instruction Manual

TECHNICAL BULLETIN TB-3074
Wave Distortion Monitor Verification Tester
Operation Instructions

Figure 1. Desco 98221 Wave Distortion Monitor Verification Tester

Description

The Desco 98221 Wave Distortion Monitor Verification Tester is used to perform periodic test limit verification of Desco Wave Distortion Monitors. Verification may be accomplished without removing the monitor from its workstation. The Wave Distortion Monitor Verification Tester is National Institute of Standards and Technology (NIST) traceable. Frequency of verification is based on the critical nature of the ESD susceptible items handled.
Desco recommends annual calibration of workstation monitors and the Wave Distortion Monitor Verification Tester.
Desco Single-Wire Wave Distortion Continuous Monitors are defined in ESD TR1.0-01-01 as impedance continuous monitors. Most metrology departments or companies specializing in calibration will not have the specialized test equipment needed for the calibration or verification of wave distortion continuous monitors.
The Desco 98221 Wave Distortion Monitor Verification Tester meets ANSI/ESD S20.20 and Compliance Verification ESD TR53.

The Desco 98221 Wave Distortion Monitor Verification Tester can be used with the following items:

Packaging

1 Wave Distortion Monitor Verification Tester
1 09700 Alligator Clip
1 09782 10mm Stacking Snap
1 09838 Ground Plug Adapter
1 Banana Plug Wire Adapter, 5″
1 Ground Extension Cord, 5′
1 Certificate of Calibration

Features and Components

Figure 2. Wave Distortion Monitor Verification Tester
features and components

A. Mat Test Lead: Connect to the monitor’s mat terminal to verify its mat test circuit.
B. Ground Lead: Connect to equipment ground to provide a ground reference for the Wave Distortion Monitor Verification Tester.
C. Operator Test Lead: Insert into the monitor’s operator jack to verify its operator test circuit.
D. Rotary Switch: Selects the various pass and fail load values needed to verify the monitor’s operator and mat test circuits.

Operation

Mini Monitor
VERIFYING THE OPERATOR CIRCUIT

1. Connect the Wave Distortion Monitor Verification Tester’s green ground lead to equipment ground.
   This may be done using the included Ground Plug Adapter or alligator clip. Figure 3. Using the Ground Plug Adapter to ground the Wave Distortion Monitor Verification Tester

2. Insert the verification tester’s black operator test lead into the Mini Monitor’s operator jack.Figure 4. Connecting the Wave Distortion Monitor Verification Tester to the Mini Monitor’s operator jack

3. Set the rotary switch to OPERATOR FAIL LOW.
   The monitor’s red operator LED should illuminate, and its audible alarm should sound.

4. Set the rotary switch to OPERATOR PASS LOW.
   The monitor’s green operator LED should illuminate.

5. Set the rotary switch to OPERATOR PASS HIGH.
   The monitor’s green operator LED should illuminate.

6. Set the rotary switch to OPERATOR FAIL HIGH.
   The monitor’s red operator LED should illuminate, and its audible alarm should sound.

7. Disconnect the operator test lead from the monitor.
   VERIFYING THE MAT CIRCUIT

8. If using a discontinued monitor model (see page 7), insert a wrist cord into the monitor’s operator jack and attach it to its park snap. This will enable the audible alarm for the mat circuit.

9. Connect the included stacking snap to the verification tester’s white mat test lead.

10. Disconnect the monitor from its worksurface mat and turn it over to expose its 10mm snaps.

11. Connect the verification tester’s white mat test lead to the monitor’s 10mm mat snap.Figure 5. Connecting the Wave Distortion Monitor Verification Tester to the Mini Monitor’s 10mm mat snap

12. Set the rotary switch to MAT 500M PASS. The monitor’s green mat LED should illuminate.

13. Set the rotary switch to MAT 500M FAIL. The monitor’s red mat LED should illuminate, and its audible alarm should sound.

Multi-Mount Monitor

VERIFYING THE OPERATOR CIRCUIT

1. Connect the Wave Distortion Monitor Verification Tester’s green ground lead to equipment ground.
   This may be done using the included Ground Plug Adapter or alligator clip. See Figure 3.

2. Insert the verification tester’s black operator test lead into the Multi-Mount Monitor’s operator jack. Figure 6. Connecting the Wave Distortion Monitor Verification Tester to the Multi-Mount Monitor’s operator jack

3. Set the rotary switch to OPERATOR FAIL LOW.
   The monitor’s red operator LED should illuminate, and its audible alarm should sound.

4. Set the rotary switch to OPERATOR PASS LOW.
   The monitor’s green operator LED should illuminate.

5. Set the rotary switch to OPERATOR PASS HIGH.
   The monitor’s green operator LED should illuminate.

6. Set the rotary switch to OPERATOR FAIL HIGH.
   The monitor’s red operator LED should illuminate, and its audible alarm should sound.

7. Disconnect the operator test lead from the monitor.
   VERIFYING THE MAT CIRCUIT

8. If using a discontinued monitor model (see page 7), insert a wrist cord into the monitor’s operator jack and attach it to its park snap. This will enable the audible alarm for the mat circuit.

9. Connect the included stacking snap to the verification tester’s white mat test lead.

10. Disconnect the monitor’s white mat monitor cord from its worksurface mat and turn it over to expose its 10mm snap.

11. Connect the verification tester’s white mat test lead to the mat monitor cord’s 10mm snap.Figure 7. Connecting the Wave Distortion Monitor Verification Tester to the Multi-Mount Monitor’s mat monitor cord

12.  Set the rotary switch to MAT 10M PASS. The monitor’s green mat LED should illuminate.

13. Set the rotary switch to MAT 10M FAIL. The monitor’s red mat LED should illuminate, and its audible alarm should sound.

Dual Operator Continuous Monitor

VERIFYING THE OPERATOR CIRCUIT

1. Connect the Wave Distortion Monitor Verification Tester’s green ground lead to equipment ground.
   This may be done using the included Ground Plug Adapter or alligator clip. See Figure 3.

2. Insert the verification tester’s black operator test lead into one of the two operator jacks. Figure 8. Connecting the Wave Distortion Monitor Verification Tester to the Dual Operator Monitor’s operator 1 jack

3. Set the rotary switch to OPERATOR FAIL LOW.
   The monitor’s corresponding operator LED should illuminate red, and its audible alarm should sound.

4. Set the rotary switch to OPERATOR PASS LOW.
   The monitor’s corresponding operator LED should illuminate green.

5. Set the rotary switch to OPERATOR PASS HIGH.
   The monitor’s corresponding operator LED should illuminate green.

6. Set the rotary switch to OPERATOR FAIL HIGH.
   The monitor’s corresponding operator LED should illuminate red, and its audible alarm should sound.

7. Disconnect the operator test lead from the monitor, and connect it to the second operator jack. Repeat the test procedure for the second operator circuit.
   VERIFYING THE MAT CIRCUIT

8. Connect the included stacking snap to the verification tester’s white mat test lead.

9. Disconnect the satellite remote’s black mat monitor cord from its worksurface mat and turn it over to expose its 10mm snap.

10. Connect the verification tester’s white mat test lead to the mat monitor cord’s 10mm snap.Figure 9. Connecting the Wave Distortion Monitor Verification Tester to the Dual Operator Continuous Monitor’s mat monitor cord

11. Set the rotary switch to MAT 10M PASS. The monitor’s mat LED should illuminate green.

12. Set the rotary switch to MAT 10M FAIL. The monitor’s mat LED should illuminate red, and its audible alarm should sound.

Full-Time Continuous Monitor

VERIFYING THE OPERATOR CIRCUIT
Connect the Wave Distortion Monitor Verification Tester’s green ground lead to equipment ground.

1. This may be done using the included Ground Plug Adapter or alligator clip. See Figure 3.

2. Insert the verification tester’s black operator test lead into the Full-Time Continuous Monitor’s operator jack. Figure 10. Connecting the Wave Distortion Monitor Verification Tester to the Full-Time Continuous Monitor’s operator jack

3. Set the rotary switch to OPERATOR FAIL LOW.
   The monitor’s red operator LED should illuminate, and its audible alarm should sound.

4. Set the rotary switch to OPERATOR PASS LOW.
   The monitor’s green operator LED should illuminate.

5. Set the rotary switch to OPERATOR PASS HIGH.
   The monitor’s green operator LED should illuminate.

6. Set the rotary switch to OPERATOR FAIL HIGH.
   The monitor’s red operator LED should illuminate, and its audible alarm should sound.

7. Disconnect the operator test lead from the monitor.
   VERIFYING THE MAT CIRCUIT

8. Connect the included stacking snap to the verification tester’s white mat test lead.

9. Disconnect the monitor’s white mat monitor cord from its worksurface mat and turn it over to expose its 10mm snap.

10. Connect the verification tester’s white mat test lead to the mat monitor cord’s 10mm snap.Figure 11. Connecting the Wave Distortion Monitor Verification Tester to the Full-Time Continuous Monitor’s mat monitor cord

11. Set the rotary switch to MAT 10M PASS. The monitor’s green mat LED should illuminate.

12. Set the rotary switch to MAT 10M FAIL. The monitor’s red mat LED should illuminate, and its audible alarm should sound.

Calibration

Frequency of recalibration should be based on the critical nature of those ESD sensitive items handled and the risk of failure for the ESD protective equipment and materials. In general, Desco recommends that calibration be performed annually.
Use the information below to verify if the Wave Distortion Monitor Verification Tester operates within its specifications.

EQUIPMENT NEEDED

• RLC Bridge for testing operator circuit
• Digital Multimeter with 50-100V power supply for testing mat circuit

SETTINGS

• @ 50 Hz
  Frequency = 1,000 Hz (20 x 50), 20th harmonic

• @ 60 Hz
  Frequency = 1,020 Hz (17 x 60), 17th harmonic

• Set function switch to read “Equivalent Parallel
  Circuit”

RECORD THE FOLLOWING DATA

Operator Rotary Switch Setting| Equivalent Parallel Capacitance| Targeted Specification (±10%)
---|---|---
Fail Low| | 138.9 pF
Pass Low| | 118.6 pF
Pass High| | 49.0 pF
Fail High| | 44.7 pF
Operator Rotary Switch Setting| Dissipation Factor| Targeted Specification (±10%)
---|---|---
Fail Low| | .158
Pass Low| | .367
Pass High| | .445
Fail High| | .192
Mat Rotary Switch Setting| Resistance @ 50V| Targeted Specification (±4%)
---|---|---
10M Pass| | 8 megohms
10M Fail| | 12 megohms
100M Pass| | 80 megohms
100M Fail| | 120 megohms
500M Pass| | 400 megohms
500M Fail| | 600 megohms

Specifications

Operating Temperature 50 to 95°F (10 to 35°C)

Environmental Requirements| Indoor use only at altitudes less than 6500 ft. (2 km)
Maximum relative humidity  of 80% up to 85°F (30°C)
decreasing linearly to 50% @ 85°F (30°C)
---|---
Dimensions| 3.17″ L x 2.25″ W x 1.26″ H
(81 mm x 57 mm x 32 mm)
Weight| 0.3 lbs. (0.15 kg)
Country of Origin| United States of America

The Desco 98221 Wave Distortion Monitor Verification Tester may also be used with the following discontinued items:

Jewel® Workstation Continuous Mini Monitor| 19212, 19213, 19214, 19215, 19216, 19217, 19218
---|---
Multi-Mount Continuous Monitor| 19220, 19221, 19222, 19223, 19226, 19227, 19228, 19229, 19234, 19236, 98225, 98226, 98227, 98228
Dual Operator Continuous Monitor| 19208, 19209, 19230, 19231, 19232, 19233, 19237, 19238, 19246, 19247, 98207, 98208
Full-Time Continuous Monitor| 19210, 19211, 19225, 19321, 19322, 19325, 19326, 50543, 50544, 98210, 98211

Limited Warranty, Warranty Exclusions, Limit of Liability and RMA Request Instructions
See the Desco Warranty – Desco.com/Limited-Warranty.aspx

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

© 2022 DESCO INDUSTRIES INC
Employee Owned

Documents / Resources

| DESCO 98221 Wave Distortion Monitor Verification Tester [pdf] Instruction Manual
98221 Wave Distortion Monitor Verification Tester, 98221, Wave Distortion Monitor Verification Tester, Distortion Monitor Verification Tester, Monitor Verification Tester, Verification Tester, Tester
---|---
| DESCO 98221 Wave Distortion Monitor Verification Tester [pdf] Instruction Manual
98221 Wave Distortion Monitor Verification Tester, 98221, Wave Distortion Monitor Verification Tester, Distortion Monitor Verification Tester, Monitor Verification Tester, Verification Tester, Tester

References

• Desco - Static Control Products and Supplies for ESD Protection
• Desco - Limited Warranty
• Desco - Full Catalog
• Desco - 19239 Continuous Mini Monitor, N. American Plug
• Desco - 19243 Continuous Mini Monitor, Universal Power Adapter
• Desco - 19652 Multi-Mount Continuous Monitor with Universal Plug
• Desco - 98221 Wave Distortion Monitor Verification Tester
• Desco - 09700 Banana Jack Alligator Clip
• Desco - 09782 Banana Jack Parking Snap, 10 MM
• Desco - 09838 Ground Plug Adapter
• Desco - Static Control Products and Supplies for ESD Protection
• Desco - 19655 DUAL OPERATOR MONITOR, NORTH AMERICA
• Desco - 19656 DUAL OPERATOR MONITOR, UNIVERSAL POWER ADAPTER
• Desco - 19330 FULL-TIME MONITOR, WITH NORTH AMERICA POWER CORD
• Desco - 19331 FULL-TIME MONITOR, WITH UK POWER CORD
• National Institute of Standards and Technology

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