Prostat PRF-922A-B User manual

User Manual
PRF-922A-B
MINIATURE TWO-POINT PROBE ADAPTER

PROSTAT® PRFͳ922AͳB MINIATURE TWOͳPOINT PROBE ADAPTER
SecƟon Topic Page
I. Introducon & Descripon 4
II. Cauons & Warnings 4
III. PRF-922A-B Miniature Two-Point Adapter Mounng Operaon 6
IV. Handling & Maintenance 10
V. Warranty Informaon 12
General Specificaons 13
Table of Contents
Copyright © 2012 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, 1072 Tower Lane, Bensenville, IL 60106 USA
Prostat is the registered trademark of Prostat® Corporaon

4Rev. A / September 2007
PRF-922A-B Two-Point Probe Adapter
I. IntroducƟon & DescripƟon
The PRF-922A-B Miniature Two-Point Adapter Resistance Fixture is designed for use with Prostat’s
PRF-912B and PRF-914B Miniature Concentric Ring Resistance Fixtures. The PRF-922A-B 2-Point
Adapter converts the PRF-912B and PRF-914B concentric fixtures to a 2-Point measurement fixture in
accordance with the ANSI/ESD STM11.13 Two-Point Resistance Measurement standard test method. It
will accurately measure surface resistance of small areas. It consists of a housing that fits over the con-
centric ring assembly of either the PRF-912B or PRF-914B miniature probe fixtures, two spring loaded
measurement probes and built in spacer to prevent excess probe pressure. Removable conducve
rubber probe covers are supplied to reduce contact resistance. A locking screw holds the adapter onto
the host fixture and in contact with the PRF-912B or PRF-914B concentric ring test contacts.
Refer to the PRF-912B and PRF-914B Operang manuals for de-
tailed instrucons on use of those fixtures.
A. Descripon
This precision fixture consists of 2 gold plated, spring-loaded
contact electrodes spaced 0.250 inches (6.35mm) apart, center-
to-center. The electronic quality gold plated contact probes are
0.1-inch (2.54mm) in diameter, and are supplied with con-
ducve synthec rubber contact boots, which are 0.125-inch
(3.18mm) diameter. The conducve boots are used to reduce
contact resistance between the gold contact probes and mate-
rials under test in certain applicaons.
1. The resistance measurement range of the PRF-922A-B Adapter fixture is 0.9 ohms at <10 volts
to 1.0E+12 (1.0x1012) ohms at 100 volts.
2. Contacts are pogo-pin type ATE quality probes made of beryllium Copper, coated with 60 micro
inch of hard Gold. Spacing allows for measurement of items with surfaces approximately 0.125
inches wide having a length of 0.32 inches or larger.
3. The contact assembly’s outer housing incorporates “stops” that insure consistent contact pres-
sure during measurement.
4. Overall size of the PRF-922A-B Adapter is 0.50 inches in diameter by 2.7 inches long. This op-
mal size and shape make the fixture very comfortable and easy to handle. Its outer housing is
made of black anodized aluminum.
5. The PRF-922A-B Standard accessories include a protecve cover, 1 Allen Wrench for mounng
and 1 extra pin.
II. CauƟons & Warnings
As with any electrical device, use proper electrical precauons and measurement pracces to avoid per-
sonnel shock. Read this manual in its enrety before aempng to use these products.
NOTE
This manual displays Cauons and Warnings alerng the user to hazardous operaon and ser-
vicing condions. CAUTION or WARNING headings throughout this publicaon flag this infor-
maon, where appropriate. Follow all Cauon and Warning instrucons at all mes.
Figure 1: PRF-922A-B Miniature
2-Point Adapter Resistance Fixture
Set.

5
Rev. A / September 2007
PRF-922A-B Miniature Two-Point Probe Adapter
A. Use of Measurement Power Supply
1. The PRF-922A-B Adapter is a high performance micro probe designed for use with a host
fixture supplying maximum input voltage of 100 volts. As such, it is capable of delivering an an-
noying shock to any person touching the spring-loaded contacts when they are energized by a
measurement system (not supplied).
a. If used with the PRS-801 Resistance System, the current capability of the micro probe in-
strument combinaon is limited to a very low, typically harmless level. However, a disnct
hazard exists in the operator’s reacon to a possible shock.
b. To avoid shock, operang personnel should not touch the electrodes, or any exposed me-
tallic part of the host fixture or cable assembly when power is applied to the probe.
CAUTION
To avoid electrical shock, Do Not Touch the fixture test electrodes, test bed, or exposed
metal BNC connecons when power is being applied to the probe.
c. The designed operang voltage limit for normal auding and laboratory measurements is
100 volts. Exceeding 100 volts greatly increases the risk of personnel shock hazards.
WARNING
Never exceed the maximum applied operang test voltage of 100 volts
d. Only qualified instrument repair and test personnel should exceed the 100-volt operaon
limit, and then do so only under controlled condions using maximum precauons against
personnel shock.
e. Never, under any condions, exceed 500 volts during fixture test or repair.
B. Other Operaonal Precauons
1. Do Not Use the PRF-922A-B Micro Probe Adapter if it fails to funcon during its connuity
inspecon test.
2. Do Not Use the PRF-922A-B Micro Probe Adapter if it becomes damaged
3. Only Prostat Corporaon authorized, qualified repair personnel may open PRF-922A-B housing,
terminal assemblies, or perform product repair. Unauthorized opening of fixture or instrument
housings, device tampering, or aempted repair will void product warranty and completely
absolve Prostat Corporaon, its employees, suppliers and representaves of any responsibility,
liability, or other, whatsoever.
WARNING
Unauthorized opening of fixture or instrument housings, device tampering, or aempted re-
pair will absolutely void product warranty and completely absolve Prostat Corporaon of any
responsibility, liability, or other, whatsoever.

6Rev. A / September 2007
PRF-922A-B Two-Point Probe Adapter
4. Do Not Touch Electrode Surfaces. Electrodes will become contaminated with skin oils and salts,
and may become damaged or rendered inaccurate.
5. Do Not Use Or Store PRF-922A-B In Damp Environments Always store devices with protecve
caps in place in a dry environment, preferably at ≤20% Rh.
CAUTION
Storage or use of these instruments, fixtures and devices in damp or wet condions may
cause damage to electrical circuits, and contact surfaces, which may effect performance or
increase the possibility of personnel shock or arc discharge.
6. Do not use these fixtures and devices in combusble or explosive environments.
WARNING
Improper handling and use of energized circuits may cause arc discharge, which in turn may
cause the ignion of combusble materials or fumes. Do not use exposed energized circuits in
flammable areas.
7. Do not aempt to measure energized materials or circuits with the PRF-922A-B
8. Do not use the PRF-922A-B with any host fixture other than a PRF-912B, or PRF-914B. The host
fixture must meet all performance and safety elements outlined herein.
9. The PRF-922A-B is a precision fixture to be operated by experienced personnel familiar in the
use and handling of devices employing energized power supplies.
10. Do Not Drop or cause mechanical damage to these devices.
III. PRF-922A-B Miniature Two-Point Adapter MounƟng OperaƟon
A. Mounng the PRF-922A-B Adapter to host fixture
1. Remove protecve cover from the PRF-922A-B Two-Point Adapter.

7
Rev. A / September 2007
PRF-922A-B Miniature Two-Point Probe Adapter
2. Loosen PRF-922A-B Adapter locking screw. Loosen them by turning clock-wise (Do not remove
screws all the way).
3. Slip PRF-922A-B onto host fixture unl contact is made
with host concentric ring
4. Hold host and adapter assembly vercally and in con-
tact with hard table surface, press to compress both
host fixture and 2-Point contacts
5. Tighten locking screw to hold adapter in place.
B. Setup host fixture for normal measurements according
to PRF-912B or PRF-914B Miniature Probe instrucon
manual.
1. Connect measurement cable to host fixture
a. Remove black rubber protecve cover
from host fixture BNC connecon
b. Aach shielded cable to the host
probe’s BNC connecon (Figure 2).
2. Connect host measurement cable to mea-
surement instrument according to host
fixture manual instrucons.
3. Once the cable and BNC adapter are in-
stalled the PRF-922A-B is ready for connu-
ity test, verificaon and use.
Figure 2: Connect shielded cable to host fixture BNC
fiƫng
BNC Connector

8Rev. A / September 2007
PRF-922A-B Two-Point Probe Adapter
NOTE
To remove BNC connecons, apply slight pressure and twist connector counter clockwise
C. Confirming Proper BNC Connecons, Connuity & High Resistance Tests
The following confirms proper connecons by checking connuity of the micro probe assembly
against a metal plate, and then confirms its ability to measure high resistance.
1. To confirm general setup and funcon of the PRF-922A-B and host assembly, place the elec-
trodes against a clean metal surface. For example, the plated metal side of the PTB-920, Dual
Surface Test Bed.
a. Hold the PRF-922A-B and host fixture assembly vercally, and apply pressure to slightly
compress the electrodes, making posive contact with the metal surface.
b. Acvate the wide range, resistance instrument to obtain a measurement.
(1) In the case where the PRS-801 is the measurement instrument, it should
measure approximately 1.0 ohm, or less.
(2) With other instruments, they should provide a LOW resistance indicaon. For
example, <103ohms when using the PSI-870 Resistance Indicator, or <104
ohms when using the Prostat analog Megohmmeter.
2. Repeat the above procedure using the clean insulated surface (Black, labeled side) of the PTB-
920, or an insulated acrylic plate.
a. Hold the PRF-922A-B and host assembly vercally, and apply pressure to compress the
electrodes, making posive contact with the insulated surface.
b. Acvate the wide range, resistance instrument to obtain a measurement.
(1) In the case where the PRS-801 is the measurement instrument, it should
measure 1.0x1012 ohms, or greater.
(2) With other instruments, they should provide a HIGH resistance indicaon. For
example, 1012 or >1012 ohms when using the PSI-870 Resistance Indicator, or
approximately 1011 ohms when using the PRS-800 analog Megohmmeter.
D. PRF-922B Verificaon Using the PRV-913B Two-Point verifica
on fixture
1. Connect the fixture assembly to the wide range, resistance
measurement instrument.
2. Remove PRF-922A-B Probe Cover (Figure 3).
3. Posion PRF-922A-B and host fixture vercally into the PRV-
913B 2 point verifier aligning its spring loaded pin electrodes
to make direct contact with the Verifier’s gold plated test
segments.
Figure 3: Remove Probe Cover

9
Rev. A / September 2007
PRF-922A-B Miniature Two-Point Probe Adapter
4. Depending on your resistance instrument select either 10V or 100V test voltage.
5. Measure PRF-922A-B probe and host fixture resistance while posioned in the PRV-913B
2-point Verifier. Resistance should be 1.0x106ohms ±5%.
E. Basic Measurements Using the PRF-922A-B Micro Probe
1. Place material to be measured on an insulated test bed, the clean insulated surface (Black,
labeled side) of the PTB-920, or an insulated acrylic plate.
2. Posion the PRF-922A-B vercally directly over test area and lower it unl the spring-loaded
electrodes makes direct contact with the material under test.
3. Apply sufficient pressure on the probe unl the spring-loaded electrodes are parally com-
pressed while in contact with the test material, and the outer housing “stops” contact the
material under test.
IMPORTANT NOTE
The outer housing “stops” help ensure consistent probe pressure with the material’s
surface and that the springs are not fully compressed against their stops. This will provide
more reproducible measurements.
4. Select appropriate instrument test voltage and iniate resistance measurement. ESD Associa-
on S11.11 test voltage guidelines for measuring packaging materials are as follows:
a. For material resistance measurements of less than 1.0x104 ohms, use <10 volts.
b. For measurements of 1.0x104to <1.0x106ohms, use 10 volts.
c. For measurements greater than 1.0x106ohms, use 100 volts
NOTE: For opmal performance and accuracy, use the PRS-801 Resistance System
in its AUTOMATIC, or AUTO – MANUAL Mode. Either mode will control test voltage,
resistance range adjustment and electrificaon period automacally.

10 Rev. A / September 2007
PRF-922A-B Two-Point Probe Adapter
IV. Handling & Maintenance
A. PRF-922A-B Miniature 2-Point Adapter Fixture
1. Store the PRF-922A-B in a clean, dry environment with probe cover
installed for environmental and mechanical protecon.
2. Periodically, remove the spring-loaded test pins. Clean the spring-
loaded test probes and mounng disk with a soluon of laboratory
grade isopropyl alcohol and lint-less cloth, or laboratory quality
swab. Allow components to dry thoroughly be fore re-assembling.
a. Remove each test probe by grasping it firmly then pulling it straight
out of its socket. (Figure 8)
b. Inspect each probe for damage, and then clean with the alcohol
soluon. If a probe is damaged, i.e., bent, does not compress
smoothly, or has deep surface scratches, replace it with a new probe
of the same size and characteriscs. (Contact Prostat Corporaon,
Customer Service for spare replacement probes.)
Figure 8: Remove Spring-Loaded
probe electrode by grasping firmly
and pulling straight out of its
socket.
Pull spin straight out
Figure 4: Measuring Carrier Tape Figure 5: Measuring Device Carrier
Figure 6: Measuring Formed Tray Figure 7: Measuring Jedec Tray

11
Rev. A / September 2007
PRF-922A-B Miniature Two-Point Probe Adapter
c. Clean and dry the pin socket mounng disk twice to insure cleanliness and minimum leak-
age (maximum resistance) between pin sockets
d. Carefully re-install the spring-loaded test probes, and fully re-seat them in their sockets
Figure 9: Cleaning the spring-loaded test Figure 10: Insert Test Probe into its Socket and
3. Aer cleaning, perform Connuity, High Resistance and Verifier checks.
B. Use of Conducve Rubber Electrode “Boots” to Reduce Contact Resistance
1. Measurements obtained without use of conducve rubber
boots will simulate material contact by metal objects. In
this situaon, contact resistance is high and the resulng
measurements will be higher and somewhat irregular than
those obtained using conducve rubber boots. (Figure 11)
2. Conducve rubber boots are used to reduce contact re-
sistance between the electrodes and material under test.
Measurements made with boots installed are typically
lower and more stable than those obtained without boots.
NOTE: ANSI/ESD STM11.13 Two-Point Resistance Standard
Test Method specifies use of conducve rubber contact sur-
faces for making 2-Point probe measurements.
C. PRV-913B Two-Point Resistance Verificaon Fixture
1. Store the PRV-913B in a clean, dry environment.
2. Periodically, clean and dry the gold fixture contact segments twice with a soluon of laboratory
grade isopropyl alcohol and laboratory quality swab.
Figure 11: Installing ConducƟve
Rubber Electrode “Boots”

12 Rev. A / September 2007
PRF-922A-B Two-Point Probe Adapter
V. Warranty InformaƟon
Prostat Warranty
Prostat Corporaon expressly warrants that for a period of one (1) year from the date of pur
chase, that Prostat instruments will be free from defects in material (parts) and workmanship
(labor). If Prostat receives noce of such defect during the warranty period, Prostat will replace at
its expense such parts that it determines to be defecve. Any defecve part must be returned to
Prostat postage prepaid with proof of purchase date.
Warranty Exclusions – THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL OTHER
PRODUCT WARRANTIES, EXPRESS AND IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express warranty will not
apply to defects or damage due to accidents, neglect, misuse, alteraons, operator error, or failure
to properly maintain, clean, or repair products. Limit of Liability – in no event will PROSTAT or any
seller be responsible or liable for special, incidental, or consequenal losses or damages, under
any legal theory including but not limited to contract, negligence, or strict liability.
Fulfillment by Prostat of its express warranty obligaons described above will be purchaser’s
exclusive remedy and will be Prostat’s and seller’s limit of liability for any breach of warranty or
otherwise.
F. Shipping of Warranty Returns
1. Obtain a Return Materials Authorizaon (RMA) number and shipping address from PROSTAT
customer service. Pack the instrument carefully and ship it prepaid and insured to the proper
desnaon provided by PROSTAT’s customer service department.
2. For detailed shipping instrucons and Return Materials Authorizaon (RMA), contact:
Prostat Corporaon
1072 Tower Lane
Bensenville, IL 60106
Telephone: [phone]
Fax: [phone]
C. Shipping Non-Warranty Items
1. Any Prostat product returned for non-warranty repair or calibraon requires a Return Materials
Authorizaon (RMA) number and should be packaged and shipped as described above, and as
directed by Prostat’s customer service department.
2. The following informaon must be included with the returned product:
a. Descripon of the problem
b. Customer’s Purchase Order Number & PROSTAT’s Materials Authorizaon (RMA) number
c. Name, telephone number and fax number of individual contact who can provide more
informaon regarding the problem and related applicaon(s).
d. Complete return address.

13
Rev. A / September 2007
PRF-922A-B Miniature Two-Point Probe Adapter
PRF-922A-B Miniature Two-Point Adapter & PRV-913B Verifier SpecificaƟons
PRF-922A-B Miniature Two-Point Micro Probe Adapter
Physical Dimensions: Length: 1.9 inches (48mm) without probe cover. 2.7 inches (68mm) with probe
cover. Probe diameter 0.5 inches (12.7mm). Probe cover outer diameter
0.63 inches (16mm).
Probe Weight: 1.0 ounces (26 grams)
Finish: Black anodized
Dielectric Material: Black Delran
Contact Dimensions: Contact Probes: 0.1 inches (2.54mm)
Minimum Sample 0.32 inches (8.2mm) diameter
Size:
Probe Spring 1.5 pounds (0.68 kg)
Force/Test:
Probe Total Travel: 0.25 inches (6.4mm)
Connecon: To be used with PRF-912B or PRF-914B Micro Probes
Power: Not applicable. Fixture powered by resistance instrument.
Warranty: Prostat Corporaon. Limited one year
PRV-913B Dual Verificaon Fixture
Physical Dimensions: 2.0 in x 2.0 in x 0.83 in (50.1mm x 50.1mm x 21mm)
Fixture Weight: 5.29 ounces (150 grams)
Finish: Black anodized
Contact Pads: Copper substrate with nickel and hard gold plang
Resistors: ±2% precision, 10-megohm resistors, total of 10 (Concentric Ring Side)
±2% precision, 1 each 10-megohm resistor (2-Point Side)
Power: Not applicable. Powered by PRF-922B during test
Warranty: Prostat Corporaon. Limited one year

14 Rev. A / September 2007
PRF-922A-B Two-Point Probe Adapter
NOTES

PROFESSIONAL STATIC CONTROL PRODUCTS
630-238-8883 • Fax: [phone] • 1-855-STATIC1 • www.prostatcorp.com
Prostat Corporaon
Specificaons are subject to change without noce.
All Prostat trademarks and trade names are the property of Prostat Corporaon.
All other trademarks and trade names are the property of their respecve companies.