PRF-912B & PRV-913B Miniature Concentric Ring Fixture Set
10
(3) Indicator, or approximately 10
11
ohms when using the Prostat PRS-800
analog Megohmmeter.
C. PRF-912B Verification Using the PRV-913B
1. Connect the BNC/banana adapter to the wide range, resistance measurement
instrument. Flange side of dual banana should be connected to the Positive (+)
power terminal. This applies test voltage to the 10 outer ring electrodes.
2. Remove PRF-912B Probe Cover (Figure 8).
3. Position PRF-912B vertically into the PRV-913B Verifier with
its spring loaded pin electrodes making direct contact with the
Verifier’s gold plated test segments.
4. Depending on your resistance instrument
select either 10V or 100V test voltage.
5. Measure PRF-912B probe resistance while
positioned in the PRV-913B Verifier. Re-
sistance should be 1.0x10
6
ohms
±
1%.
D. Basic Measurements Using the PRF-912B 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. Position the PRF-912B vertically directly over test area and lower it until the spring
loaded center electrode makes direct contact with the material under test.
3. Apply sufficient pressure on the probe until the center and outer spring loaded
electrode are partially compressed while in contact with the test material.
Figure 8: Remove Probe Cover
Figure 9: Insert PRF-912B Fixture into PRV-
913B Verifier and Measure Verifier
Resistance
