98221 DESCO | Alldatasheet

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© 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 Wave Distortion Monitor Verification Tester Operation Instructions

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. August 2017 The Desco 98221 Wave Distortion Monitor Verification Tester can be used with the following items: Item Description

19239 Mini Monitor

19242 Mini Monitor

19243 Mini Monitor

19651 Multi-Mount Monitor

19652 Multi-Mount Monitor

19246 Dual Operator Continuous Monitor

19247 Dual Operator Continuous Monitor

19325 Full-Time Continuous Monitor

50543 Full-Time Continuous Monitor

50544 Full-Time Continuous Monitor

1 Wave Distortion Monitor Verification Tester

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

TECHNICAL BULLETIN TB-3074 Figure 1. Desco 98221 Wave Distortion Monitor

© 2017 DESCO INDUSTRIES, INC.

  1. Connect the included stacking snap to the

verification tester's white mat test lead.

  1. Disconnect the monitor's black mat monitor cord
  2. Connect the verification tester's white mat test lead

to the mat monitor cord's 10mm snap. Figure 11. Connecting the Wave Distortion Monitor

  1. Set the rotary switch to MAT 10M PASS. The

monitor's green operator LED should illuminate.

  1. Set the rotary switch to MAT 10M FAIL. The

calibration be performed annually.

  • RLC Bridge for testing operator circuit
  • Digital Multimeter with 50V 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

© 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 Limited Warranty, Warranty Exclusions, Limit of Liability and RMA Request Instructions See the Desco Warranty - http://desco.descoindustries.com/Limited-Warranty.aspx 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, 98207, 98208 Full-Time Continuous Monitor 19210, 19211, 19225, 98210, 98211