Prostat PGA-710 Manual de usuario

PGA-710 Autoanalysis System

How To Measure Guide

For PGA-710 Autoanalysis System Only

Currently only available in English & Japanese

Last updated: January 2011

PGA-710 Autoanalysis System – How To Measure Guide 2

CVM-780 Contact Voltmeter Set

Quick Start Guide

America. No part of this manual may be used or reproduced in any manner whatsoever without written

permission. For information contact PROSTAT Corporation, 1072 Tower Lane, Bensenville, IL 60106

PROSTAT is the registered trademark of PROSTATCorporation

PGA-710 Autoanalysis System – How To Measure Guide 3

TABLE OF CONTENTS

PROSTAT®PGA-710 AUTOANALYSIS SYSTEM

Title Page #

I. General .......................................................................................................................... 3

II. Instrument Setup for Body Voltage .................................................................................. 4

III. Measure Body Voltage Generation ............................................................................... 11

IV. Instrument Test Setup for Decay .................................................................................. 21

V. Basic of Voltage Decay Analysis................................................................................... 22

VI. Understanding Ionization & Measurement Objectives ................................................... 24

VII. Offset Voltage & Decay Time Measurement Procedures.............................................. 25

VIII. Understanding Ionization & Measurement Objectives ................................................... 27

IX. Analyzing Decay Time Data & Generating Reports ....................................................... 29

X. Assembled Decay Charts................................................................................................ 32

PGA-710 Autoanalysis System – How To Measure Guide 4

Overview: Body Voltage Generation Analysis

Body voltage generation is directly related to the contact and separation of footwear with

flooring surfaces. Charge (Q) is generated on the outer surface of the shoe sole, and the body’s

voltage (V) is a function of body capacitance (C), which varies while walking versus standing.

The following instrument system and procedures measure and analyze body voltage while

personnel transport ESD sensitive devices, and estimate voltages when standing at

workstations or equipment during device handling operations.

The following analysis is useful in assessing the probability of device damage in the

manufacturing process based on the device’s Human Body Model (HBM) damage threshold. It

will estimate the range of probable body voltage of most personnel while wearing the test

footwear on the floor surface in question, under specific temperature and relative humidity

conditions. In effect, using the following procedure with the PGA-710 Autoanalysis system

calculates and reports the probability of personnel equaling, or exceeding levels of body voltage

under specific conditions.

I. General

Install the PGA-710 Autoanalysis Applications software on your computer as described in

the Quick Start Installation Guideline, and charge the PGA-710 Autoanalyzer’s battery for

greater than 8 hours. Setup the instrumentation and test area as described, using the

following schematic and photographs. Review the PGA-710 Autoanalysis System

Operations Manual for detailed system instructions.

Figure 1: Schematic of Test Setup

PGA-710 Autoanalysis System – How To Measure Guide 5

The shielded measurement cable is intented for use with the Prostat CPM-720 charge plate

monitor for measuring body voltage generation, charge retention, remote equipment and other

electrostatic voltage sources. The signal conductor insulation is Red and the shield insulation is

Green. Connect the Red lead to the CPM and object being measured. Connect the Green shield

to ground to reduce the effects of ambient electrical noise and transmitted energy. Do not

connect the shield to the ground plate of the CPM.

II. Instrument Setup for Body Voltage

The following outline will help prepare your system for capturing and recording data. To

protect your system, please review the following before proceeding further.

NOTE: The PGA-710 was designed to be used in conjunction with PROSTAT instruments,

specifically the PFM-711A Field Meter equipped with the CPM-720 Charge Plate Monitor

accessory. However, other devices having specified tolerances and output voltages ±2 volts

or less may be used with the PROSTAT PGA-710 Autoanalysis System. Confirm that the

measurement instrument’s maximum output voltage does not exceed 2.0 volts and that

connections are compatible before using other instruments with the PGA-710. If there is any

doubt about instrument compatibility, contact PROSTAT before connecting the instrument,

as damage incurred by using other instruments with the PGA-710 may void your warranty.

Set up your instrument for capturing data as follows:

1. Attach the PROSTAT CPM-720 Charge Plate to the

PFM-711A Field Meter

2. Ground the instrument. Mount a fabric PROSTAT

PWS-610M Modified Wrist strap to a 5 pound NFPA

electrode, and connect the wrist strap cord to a

previously tested ESD ground as shown in Figure 2,

below. (See ESD S-6.1 Grounding for details

regarding ESD grounds.)

CAUTION: To prevent damage to the PGA-710 and voiding your warranty, input to the

Autoanalyzer may not exceed 2.0 volts without specific adjustments and recommendations

from PROSTAT. Confirm proper non-PROSTAT instrument output voltages before connecting

to, and energizing the system.

Figure 2: Portable CPM Connections

PGA-710 Autoanalysis System – How To Measure Guide 6

3. Secure the instrument to prevent damage. Attach the PFM-711A Field Meter to the

modified wrist strap using its ground snap as shown in Figure 2. This will maintain the

PFM-711A & CPM-720’s connection to ground, while preventing the system from being

pulled from a worksurface during normal measurements.

4. Connect the instruments. Plug one end of the analog output cable into the PFM-711A

Field Meter, and the other end into the PGA-710 Autoanalyzer. See Figure 3, below.

5. Connect the PGA-710 to the Computer. Install the supplied USB output cable between

the PGA-710 Autoanalyzer receptacle and your computer’s USB port. This allows data

flow from the PGA-710 into the Autoanalysis System Application software.

6. Energize instruments & computer. Turn ON the field meter, computer and Autoanalyzer.

7. Start Software. Open Autoanalysis Applications Software on the computer and select

Start a New Session Wizard (Figure 4)

Figure 3: Connect Field Meter Output to Autoanalyzer input

Figure 4: Start a new session

PGA-710 Autoanalysis System – How To Measure Guide 7

8. Select type of test. When the Session

Wizard opens, choose Voltage

Generation Test as in Figure 5. This

opens a series of windows you may

use to annotate your charts and

provide report information.

9. Enter number of walking steps. In the

first window you may enter the

number of walking step cycles you

plan to conduct, as in Figure 6.

Twenty is typical, but you may enter

any number suitable to your needs.

Press to continue.

10. Enter Technician, Affiliation and Material information, and press to continue.

11. Enter address and test area information and click Finish to complete Session Wizard.

Figure 5: Start a new session

Figure 6: Enter number of Step Cycles Figure 7: Enter Personnel & Material Information

Figure 8: Test Location Information

PGA-710 Autoanalysis System – How To Measure Guide 8

12. A new test screen opens and allows immediate measurements. Note that without data

in the system Test Information Status is “Incomplete”.

13. Select background, line colors and temperature type (oC, oF or both). Change colors or

include reference lines using the Document drop down, Appearance Options menu.

Figure 9: New Test Screen

Figure 10: Appearance Window Changes Backgroundand Selected Display Elements

PGA-710 Autoanalysis System – How To Measure Guide 9

14. Add reference lines and labels using the Document drop down, Voltage Custom

Labels menu. Once lines and labels are added and the screen is configured to your

needs you may test the system for proper zero, data capture and scaling.

15. To confirm the voltage zero (0) reference for the system, proceed as follows:

a. Remove the analog cable from the Autoanalyzer and insert the supplied shorting

shunt. Confirm the unit is energized and connected to the computer

b. Press Green right arrow in the Chart Control section or F5 to start the Preview

data trace.

c. If using a black background a Lime Green trace will appear in the screen window at

approximately zero

d. Press the Black Square ■or F8 to stop the preview

Figure 11: Adding and Modifying Reference Voltage Line, Labels and Colors

Figure 12: Previewing the zero reference

PGA-710 Autoanalysis System – How To Measure Guide 10

16. To fine tune the zero reference, open the Edit drop down menu and select Current

Measures (Figure 13). This will display a small window that provides detailed data

regarding specific Voltage, Temperature and Relative Humidity.

a. Press the Green Preview Arrow (F5) to start the Preview Trace, then Voltage Auto

Balance double vertical arrows (F11). This will provide a detailed view of the zero

reference.

b. If the zero reference is greater than 0 ± 2 Volts, zero the System as follows:

Figure 13: Opening the Current Measures window for detailed data display

Figure 14: Press Voltage Auto Balance button of F11 to display all data in the screen view

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