Prostat PWA-805 User manual

User Manual
PWA-805
WRIST STRAP AUDITOR FIXTURE

PROSTAT® PWA805 WRSIT STRAP AUDITOR FIXTURE
Secon Topic Page
I. Before Using the Instrument 4
II. Safery 4
III. Descripon 4
IV. Accuracy 5
V. Baery Installaon & General Maintenance 6
VI. Normal Operaons 7
VII. Funconally Tesng the PMT-872A 13
General Specificaons 17
Table of Contents
Copyright © 2019 by Prostat® Corporaon. All rights reserved. Printed in the United States of America. No part of this
manual may be used or reproduced in any manner whatsoever without wrien permission. For informaon contact
Prostat Corporaon.
Prostat is the registered trademark of Prostat® Corporaon

4Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
I. Introducon
The Prostat PWA-805 Wrist Strap Auditor is designed to determine the condion of a wrist strap as-
sembly. Used with the PRS-801 or PRS-812 Resistance Meters, a resistance measurement can be made
of the full assembly cuffand cord, the cuffonly, or the cord only. This measurement will define the
operable condion of any standard wrist strap.
A. The PWA-805 unit approximates the basic electrical measurement requirements of the ANSI/ESD
S1.1 wrist strap standard.
B. The intent of the PWA-805 is to provide the ESD auditor with a convenient fixture to measure the
exact resistance characteriscs of a wrist strap, rather than generally esmate its approximate
resistance range with an indicang checker.
C. The PWA-805 will provide the four following resistance measurements:
1. Resistance of a wrist strap from the inner, middle posion of the cuffto the end of the ground-
ing cord.
2. The resistance between two points on the inner surface of the cuff
3. The resistance between two points on the outer surface of the cuff
4. The resistance between the cord cuffsnap and ground connecon
II. Cauons & Warnings
A. As with any electrical device, use proper electrical precauons to avoid personnel shock.
1. The PWA-805 Wrist Strap Auditor fixture operates with power input from the Resistance Meter
at 10 to 100 volts, and is capable of delivering an annoying shock to any person touching it.
2. Although the current capability is limited, a disnct HAZARD EXISTS in the person’s reacon to
the shock.
3. To avoid personnel shock, do not touch the can electrodes when power is applied to the fixture
CAUTION
To avoid electrical shock, do not touch the fixture’s
can electrodes when power is being applied.
B. The PWA-805 is designed to be used in audit environments at test voltages of 100 volts or less.
Exceeding 100 volts greatly enhances the risk of personnel shock hazards and may damage the
fixture.
WARNING
Operaonal test voltages should not exceed
100 volts in the audit environment.

5
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
C. DO NOT USE THE PWA-805 AUDITOR if it fails to pass its funconal test.
CAUTION
Should the Funconal connuity check indicate improper operaon of the fix-
ture, OR the fixture becomes damaged, do not use the PWA-805.
Contact Prostat Customer Service Department for further instrucons.
D. DO NOT USE THE PWA-805 AUDITOR if it becomes damaged in any way.
E. Only qualified instrument repair personnel should open terminal connecons or repair the PWA-
805 AUDITOR.
F. Do not store or use in damp environments
G. Always store the PWA-805 in its protecve case.
III. Equipment Inspecon & Inial Preparaon for Use
A. Basic Descripon
The PWA-805 Wrist Strap Auditor Fixture consists of two metal cylinder electrodes mounted on a
plasc base and wired to a switch, cord connecon points and meter input receptacles.
1. The metal cylinder (can) electrodes are used to mount wrist strap cuffs for connuity and resis-
tance measurements.
2. A YELLOW cord receptacle allows the wrist strap grounding cord to be plugged into the fixture’s
test circuit.
3. Two meter input receptacles (RED and BLACK) are provided to connect the Resistance Meter
to the fixture’s test circuit. The Resistance Meter provides all resistance measurements for the
PWA-805 Auditor.
4. Two male snap posts, one 7 mm and one 4 mm, are provided for mounng the cuffsnap end
of the grounding cord to the fixture circuit during Cord Only measurements.
5. A three posion rocker switch (BLACK) allows resistance measurements of the following wrist
strap components:
a. The Cuffand Grounding Cord
b. The CuffOnly
c. The Grounding Cord Only

6Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
Figure 1: PWA-805 Layout
B. Funconal Test of the PWA-805 Wrist Strap Auditor Fixture
1. Funconal Connuity Test of the CUFF & CORD measurement funcon.
a. Connect the test leads from the Resistance Meter to the PWA-805 Auditor METER recep-
tacles. NOTE: Prior to using the Resistance Meter, read the Operaons Manual.
b. Plug an auxiliary test lead into the YELLOW CORD receptacle. Use a straight test lead
equipped with banana plugs. For ease of handling install an alligator clip on one end of the
test lead.
c. Select the CONTINUITY TEST posion on the Resistance Meter.
d. Touch the free end of the installed test lead to the PWA-805 adjustable can electrode (the
can on the right side of the fixture equipped with a knurled, sloed locking screw).
e. Select the fixture rocker switch middle posion, labeled CUFF & CORD.
Figure 2: PWA-805 Connuity Test of Cuff& Cord Funcon

7
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
f. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0
Ohms.
CAUTION
To avoid electrical shock, do not touch the fixture,
can electrodes when power is being applied.
(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the CUFF & CORD
test funcon is acceptable. Proceed to the CORD ONLY funconal test.
(2) If the meter indicates “infinity” or a high resistance check the rocker switch posion
and test lead connecons and repeat the connuity test.
(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.
Contact Prostat Customer Service.
2. Funconal Connuity Test of the CORD ONLY measurement funcon.
a. Connect the test leads from the Resistance Meter to the PWA-805 Auditor METER recep-
tacles. NOTE: Prior to using the Resistance Meter, read the Operaons Manual.
b. Plug an auxiliary test lead into the YELLOW CORD receptacle. Use a straight test lead
equipped with banana plugs. For ease of handling, install an alligator clip on one end of the
test lead.
c. Select the CONTINUITY TEST posion on the Resistance Meter.
d. Touch the free end of the installed test lead to the PWA-805 7 mm male CORD SNAP termi-
nal.
e. Select the fixture rocker switch right posion, labeled CORD ONLY.
f. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0
Ohms.
Figure 3: PWA-805 Connuity Test of Cord Only Funcon

8Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the 7 mm CORD
ONLY test funcon is acceptable. Proceed to the 4 mm CORD ONLY funconal test.
(2) If the meter indicates “infinity” or a high resistance check the rocker switch posion
and test lead connecons and repeat the connuity test.
(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.
Contact Prostat Customer Service.
g. Touch the free end of the installed test lead to the PWA-805 4 mm male CORD SNAP termi-
nal.
h. Select the fixture rocker switch right posion, labeled CORD ONLY.
i. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0
Ohms.
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the 4 mm CORD
ONLY test funcon is acceptable. Proceed to the CUFF ONLY funconal test.
(2) If the meter indicates “infinity” or a high resistance check the rocker switch posion
and test lead connecons and repeat the connuity test.
(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.
Contact Prostat Customer Service.
3. Funconal Connuity Test of the CUFF ONLY measurement funcon.
a. Connect the test leads from the Resistance Meter to the PWA-805 Auditor METER recep-
tacles. NOTE: Prior to using the Resistance Meter, read the Operaons Manual.
b. Aach an auxiliary test lead to the adjustable can electrode (right side of the fixture). Use a
straight test lead equipped with banana plugs and two alligator clip.
c. Select the CONTINUITY TEST posion on the Resistance Meter.
d. Touch the free end of the installed test lead to the PWA-805 fixed can electrode (the can on
the leside of the fixture).
e. Select the fixture rocker switch leposion, labeled CUFF ONLY.
f. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0
Ohms.

9
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
Figure 4: PWA-805 Connuity Test of CuffOnly Funcon
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the CUFF ONLY test
funcon is acceptable, and all funconal tests are completed.
(2) If the meter indicates “infinity” or a high resistance check the rocker switch posion
and test lead connecons and repeat the connuity test.
(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.
Contact Prostat Customer Service.
IV. PWA-805 Wrist Strap Auditor Resistance Measurement Operaon
A. General
1. This operaon will provide the four following resistance measurements:
a. Resistance of a wrist strap from the inner surface, middle posion of the cuffto the end
of the grounding cord. This measurement indicates the maximum resistance between the
user and an ESD common ground point.
b. The resistance between two points on the inner surface of the cuff. Properly used, this
measurement defines the connuity of the inner cuff’s surface between 2 points, 180
°
apart.
(1) Thus, proper connecons of the cuffto the wrist buckle may be confirmed.
(2) The connuity around the enre perimeter of the inner cuffsurface may be
confirmed.

10 Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
c. The resistance between two points on the outer surface of the cuff. This measurement
confirms the insulave characteriscs of the cuffs outer surface.
d. The resistance between the ground cord’s cuffsnap and its connecon to ground. This
measurement performs two funcons.
(1) It allows the operator to check the ground cord for “opens”
(2) It measures the total resistance of the ground cord conductor resistor and
connecon points.
2. The following procedures require the use of the Resistance Meter. Be sure to read its Opera-
ons Manual and perform its Funconal Test prior to using.
B. Resistance Measurement of a wrist strap assembly CUFF & CORD.
1. Connect the test leads from the Resistance Meter to the PWA-805 Auditor RED and BLACK
METER receptacles.
2. Place the rocker switch in the middle CUFF & CORD posion
IMPORTANT OPERATIONAL NOTE
The LEFT can electrode in the CUFF & CORD measurement Mode is used to hold the cuffme-
chanically; it is not in the measurement circuit. The RIGHT can electrode is in the measure-
ment circuit. Consequently, the inner cuffsurface must contact the
RIGHT can electrode to obtain an accurate measurement.
3. Mount the wrist strap cuffto the PWA-805 fixture as follows:
a. Loosen the adjustable RIGHT can electrode and slide it toward the LEFT can electrode.
b. Posion the inner surface of the cuffbuckle against the LEFT can electrode and hold it
firmly in posion with your lehand.
c. With your right hand, stretch the cuffover and onto the adjustable RIGHT can electrode.
d. Slide the adjustable RIGHT can electrode toward the right side of the fixture unl there are
1 to 2 pounds of tension on the wrist strap cuff.
e. Tighten the RIGHT can electrodes locking screw.
4. Plug the wrist strap’s ground cord banana plug into the YELLOW CORD receptacle.
5. The wrist strap is now mounted on the PWA-80S fixture. Be sure:
a. The cuffis posioned smoothly on the sides of the two can electrodes
b. The ground cord is properly aached to the cuffbuckle
c. The ground cord banana plug is fully inserted into the YELLOW CORD receptacle.
6. Select the 10 volt posion on the Resistance Meter and push the TEST buon to obtain a resis-
tance measurement.

11
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
Figure 5: PWA-805 Resistance Measurement of a wrist strap assembly Cuff& Cord
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
OPERATIONAL HINT
During the measurement, one might wish to check for “opens” in the ground cord
or poor connecons by stretching various parts of the cord and observing the
meter indicaon. Wiggling the snap connecons may indicate a loose fing snap.
a. Most US wrist straps are designed to measure approximately 1.0x106Ohms, ±20 percent,
i.e., 8.0x105to 1.2x106Ohms.
b. Specially designed wrist straps used in munions are lower in resistance, while others are
designed for higher resistance levels, as in some internaonal markets.
c. Defecve wrist straps will measure well above 1.0x107Ohms. CHECK YOUR ESD OPERA-
TIONS STANDARDS TO DEFINE THE PROPER RESISTANCE RANGE FOR OPERATIONAL WRIST
STRAP ASSEMBLIES.
d. If the wrist strap indicates defecve, or you wish to further define the wrist strap’s charac-
teriscs, proceed with the following measurements.
C. Resistance Measurement of the wrist strap CUFF ONY, Inner Surface.
1. Connect the test leads from the Resistance Meter to the PWA-805 Auditor RED and BLACK

12 Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
METER receptacles.
2. Place the rocker switch in the CUFF ONLY (le) posion
IMPORTANT OPERATIONAL NOTE
In this Measurement Mode both the LEFT and the RIGHT
can electrodes are in the measurement circuit.
3. Mount the wrist strap cuffto the PWA-805 fixture as follows:
a. Loosen the adjustable RIGHT can electrode and slide it toward the LEFT can electrode.
b. Posion the inner surface of the cuffbuckle against the LEFT can electrode and hold it
firmly in posion with your lehand.
c. With your right hand, stretch the cuffover and onto the adjustable RIGHT can electrode.
d. Slide the adjustable RIGHT can electrode toward the right side of the fixture unl there are
1 to 2 pounds of tension on the wrist strap cuff.
e. Tighten the RIGHT can electrodes locking screw.
4. Disconnect the wrist strap’s ground cord from the cuffbuckle.
5. The wrist strap cuffis now mounted on the PWA-805 fixture. Be sure the cuffis posioned
smoothly on the sides of the two can electrodes.
Figure 6: PWA-805 Resistance Measurement of the wrist strap CuffOnly, Inner
Surface
6. Select the 10 volt posion on the Resistance Meter and push the TEST buon to obtain a resis-
tance measurement.

13
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
a. Most US wrist strap cuffs are designed to indicate very conducve, well below 1.0x105
Ohms.
b. Defecve wrist strap cuffs will measure well above 1.0x106Ohms. CHECK YOUR ESD OPERA-
TIONS STANDARDS TO DEFINE THE PROPER RESISTANCE RANGE FOR OPERATIONAL WRIST
STRAP ASSEMBLIES.
c. Reposion the cuffby sliding it 90 degrees around the can electrodes. Repeat the cuffmea-
surement with buckle between cans.
D. Resistance Measurement of the wrist strap CUFF ONLY, Outer Surface.
1. Connect the test leads from the Resistance Meter to the PWA-805 Auditor RED and BLACK
METER receptacles.
2. Place the rocker switch in the CUFF ONLY (le) posion
IMPORTANT OPERATIONAL NOTE
In this Measurement Mode both the LEFT and the RIGHT
can electrodes are in the measurement circuit.
3. Mount the wrist strap cuffto the PWA-805 fixture as follows. Note: Be sure the ground cord is
disconnected.
a. Loosen the adjustable RIGHT can electrode and slide it toward the LEFT can electrode.
b. Posion the outer surface of the cuffagainst the LEFT can electrode and hold it firmly in
posion with your lehand. Posion the buckle between the 2 cans.
c. With your right hand, stretch the cuffover and onto the adjustable RIGHT can electrode.
IMPORTANT OPERATIONAL NOTE
Posion the cuffbuckle between the can
electrodes to prevent the buckle from affecng the
outer cuffresistance measurement.
d. Slide the adjustable RIGHT can electrode toward the right side of the fixture unl there are
1 to 2 pounds of tension on the wrist strap cuff.
e. Tighten the RIGHT can electrodes locking screw.

14 Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
4. The wrist strap cuffis now mounted on the PWA-805 fixture. Be sure the cuffis posioned
smoothly on the sides of the two can erectrodes and the buckle is between the cans.
Figure 7: Resistance Measurement of a wrist strap Cuffonly, Outer Surface
5. Select the 10 volt posion on the Resistance Meter and push the TEST buon to obtain a resis-
tance measurement.
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
a. Most US wrist strap cuffouter surfaces are designed to indicate high resistance (insulave)
and measure well above 1.0x109Ohms.
b. Defecve wrist strap cuffs will measure well below 1.0x109Ohms. CHECK YOUR ESD OPERA-
TIONS STANDARDS TO DEFINE THE PROPER RESISTANCE RANGE FOR OPERATIONAL WRIST
STRAP ASSEMBLIES.
6. Repeat the outer cuffsurface measurements at 100 volts.
E. Resistance Measurement of a wrist strap ground cord, i.e., CORD ONLY
1. Connect the test leads from the Resistance Meter to the PWA-805 Auditor RED and BLACK
METER receptacles.
2. Place the rocker switch in the right CORD ONL Y posion
IMPORTANT OPERATIONAL NOTE
In this measurement mode, both the 7 mm and the 4 mm
CORD SNAPs, as well as the YELLOW CORD receptacle
are in the measurement circuit.

15
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
3. Do Not Mount the wrist strap cuffto the PWA-805 fixture for this test. If it is mounted, it is not
part of the measurement circuit and may remain in posion.
4. Plug the wrist strap’s ground cord banana plug into the YELLOW CORD receptacle.
5. Aach the buckle connecon snap assembly to either the 7 mm or 4 mm snap post.
6. The wrist strap ground cord is now mounted on the PWA-805 fixture. Be sure: The ground cord
banana plug is fully inserted into the YELLOW CORD receptacle.
Figure 8: Resistance Measurement of a wrist strap Cord only
7. Select the 10 volt posion on the Resistance Meter and push the TEST buon to obtain a resis-
tance measurement.
CAUTION
To avoid electrical shock, do not touch the fixture
can electrodes when power is being applied.
OPERATIONAL HINT
During the measurement, one might wish to check for “opens” in the ground cord
or poor connecons by stretching various parts of the cord and observing the
meter indicaon. Wiggling the snap connecons may indicate a loose fing snap.
a. Most US wrist strap cord assemblies are designed to measure approximately 1.0x106Ohms,
±20 percent, i.e., 8.0x105to 1.2x106Ohms.
b. Specially designed wrist straps used in munions are lower in resistance, while others are
designed for higher resistance levels, as in someinternaonal markets.
c. Defecve wrist straps will measure well above 1.0x107Ohms. CHECK YOUR ESD OPERA-
TIONS STANDARDS TO DEFINE THE PROPER RESISTANCE RANGE FOR OPERATIONAL WRIST
STRAP ASSEMBLIES.

16 Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
V. Maintenance
The user serviceable parts in the PWA-80S Wrist Strap Auditor are basically terminal connecons.
A. Care should be take to keep all connecons free from dirt and dust.
B. Occasionally a snap post may loosen. Tighten with a an appropriate screw driver. The fixture case
may require opening to lock terminal connecons.
C. If in doubt, contact Prostat Customer Service for assistance or return of the unit.
PWA-805 Wrist Strap Auditor Fixture Specificaons
Fixture Case: 4.6” L x 2.75” W x 0.95” H inches
Wrist Strap Two (2) top mounted metal cylinders: 1 fixed, 1 adjustable for cuffsize
Cylinders: Cylinder Diameter: 1.25. x 1.0. H
Adjustable cylinder equipped with knurled locking screw for posioning
Comtrols: Three posion rocker switch: (1) CuffOnly [Resistance between Cylinders]
(2) Cuff& Cord Assembly [Resistance from cord ground point to cuffcylinder];
(3) Cord Only [Resistance from cord ground point to cuffsnap connecons]
Connecons: Resistance Meter: 2 banana receptacles for meter leads
Cord Groundable Point: 1 banana receptacle
2 Cord CuffSnaps: 1 each 7mm diameter, 1 each 4mm diameter
Power: Not Applicable. The fixture is used in conjuncon with the Resistance Meter and
test leads.
Weight: 4.5 oz.
Warranty: One year limited warranty

17
Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
NOTES

18 Rev. B / March 25, 2019
PWA-805 Wrist Strap Auditor Fixture
NOTES

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