Prostat PRF-922A-B Manuale utente

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

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.

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.

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

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

Indice

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