TECHNICAL BULLETIN TB-3072 Mini Monitor Made in the Installation, Operation and Maintenance United States of America Wave Distortion Technology is the Most Reliable Technology for the Continuous Monitoring of Single-Wire (Conductor) Wrist Straps Wave Distortion or vector impedance works by applying a continuous test voltage of 1.2 volts peak-to-peak at 1 to 2 microamperes (0.000002 amperes) to the wrist strap that is connected to the continuous or constant monitor. The test voltage creates a square wave that the monitor circuit compares to established patterns. By monitoring the distortions, or shape of the square wave, Wave Distortion Technology determines if the monitored circuit is complete - the operator is in the circuit and the total equivalent DC resistance is within specifications. Wave Distortion Technology produces a very fast alarm time (<50 milliseconds) and minimal false alarms. ANSI/ESD S20.20 section 7.3 states Compliance verification records shall be established and maintained to provide evidence of conformity to the technical requirements. Per ANSI/ESD S1.1 Annex A.3 Daily Figure 1. Desco Mini Monitor (wrist strap system) testing may be omitted if constant monitoring used. Per ESD Handbook ESD TR 20.20 Description section 5.3.2.4.4 Typical Test programs recommend The Desco Mini Monitor is a single workstation that wrist straps that are used daily should be tested continuous monitor. It continuously monitors the daily. However, if the products that are being produced path-to-ground integrity of one operator and one ESD are of such value that knowledge of a continuous, worksurface. The Mini Monitor eliminates the need for reliable ground is needed, and then continuous periodic testing and record keeping of wrist straps. monitoring should be considered or even required. The Mini Monitor is designed with Wave Distortion The Mini Monitor and its accessories are available as Technology which provides stable continuous monitoring the following item numbers: of the path-to-ground and presence of 1 megohm resistance of an operators wrist strap. Audio and visual Item Description alarms activate (in less than 50 milliseconds) when the 19239 Mini Monitor, Black, North American Power operator unintentionally disconnects from the monitor or Adapter the wrist strap connection points are intermittent. The 19243 Mini Monitor, Black, Universal Power Adapter Mini Monitor also serves as a ground point for an ESD worksurface and monitors for a path-to-ground of less 19258 Power Adapter, 100-240VAC Input, 24VDC than 500 megohms. All Mini Monitors are calibrated to 150mA Output, IEC Inlet NIST standards and include a certificate. 19260 Power Adapter, 100-240VAC Input, 24VDC 150mA Output, North America Plug 19264 Power Adapter Extension Cord, 3 98221 Wave Distortion Monitor Verification Tester 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 2020 DESCO INDUSTRIES INC TB-3072 Page 1 of 6 October 2020 Employee Owned19243 Mini Monitor, Universal Power Adapter Packaging 1 Mini Monitor 19239 Mini Monitor, North America 2 Countersunk Washers 1 Mini Monitor 2 Flat Head Screw, 6-32 x 1/4 2 Countersunk Washers 1 10mm Interchangeable Park Snap 2 Flat Head Screw, 6-32 x 1/4 1 10mm Operator Jack Adapter 1 Power Adapter, 24VDC, North America Plug 1 Power Adapter, 24VDC, IEC Inlet 1 Certificate of Calibration 1 Certificate of Calibration Figure 3. Universal power adapter included with the 19243 Mini Monitor NOTE: The power cord must be purchased separately if ordering the 19243 Mini Monitor. The power cords are available as the following item numbers: Item Plug Type 50545 Europe Figure 2. North American power adapter included with 50546 United Kingdom the 19239 and 19242 Mini Monitors 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 2020 DESCO INDUSTRIES INC TB-3072 Page 2 of 6 Employee Owned