Prostat PRF-922B, Руководство пользователя

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Rev. 2 / 3-18-2019
PRF-922B Miniature Two-Point Probe Set
IV. Using the PRF-922B as a One-Point Probe
A. De fi ne pin con nuity as shown in Figure 8. Using a con nuity instrument such as a mul meter,
measure from each fi xture pin to the BNC/Banana Adapter installed at the end of the shielded
cable. On the PRF-922B 2-Point fi xture this determines the probe pin that is connected to the
shielded cable and BNC/Banana Adapter. It also con fi rms measurement con nuity through the
fi xture.
Figure 8: Measure pin con Ɵ nuity to the adapter banana to iden Ɵ fy ac Ɵ ve measuring pin.
B. If desired, remove the non-conduc ng pin from the PRF-922B fi xture or PRF-922A-B adapter as
shown in Figure 9. This allows precise posi oning of the single ac ve conduc ng pin.
Figure 9: Removing the inac Ɵ ve pin helps iden Ɵ fy point of actual measurement by the ac Ɵ ve pin.
C. Once pin con nuity is determined and connec on con fi rmed, install a conduc ve rubber boot on
the ac ve measurement pin as shown below as shown in Figure 5. The boot reduces contact resis-
tance and enhances measurement repeatability. It is required by ANSI/ESD STM11.13.
V. Material & Device Measurements with Single Pin Probe
The single pin probe con fi gura on measures e ff ec ve resistance across and or through a material or as-
sembly. A proper measurement would include placing the material, or device under test (DUT), onto a
clean metal test bed that is isolated from ground, such as the Prostat PTB-920 Test Bed. This insures that
only the material is being measured and the measurement is not a ff ected by voltage variables on ground.
Note that before the measurement, the metal test bed is temporarily grounded to dissipate exis ng