Keithley 9139B-PCA, Инструкция по эксплуатации

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Section 2: Probe card adapter overview Model 9139B Probe Card Adapter Instructions
2-4 9139B-901-01 Rev. A / January 2019
Motherboard characteristics
The motherboard is the interface between the system and the probe card. It accepts up to 128
system cables (64 Kelvin pins) system cables and is suspended from the prober mounting hardware.
Source, sense, guard, and ground (where appropriate) are terminated for each DUT cable on the
motherboard.
Source, sense, and guard signals are kept separate for each pin and are carried to the probe card
through spring-loaded contacts (pogo pins). Source and measure lines are guarded on the
motherboard using printed circuit board manufacturing techniques.
System cables can be routed vertically or horizontally to the motherboard. Vertical routing is used
when the system cables are routed above the top platform (head plate) of the prober. Horizontal
routing is used when the system cables are routed under the top platform of the prober.
Probe card configuration
The probe card contains 64 fully guarded measure and sense lines. It contains mounting traces for 64
probe needles. Drilled, plated-through holes are provided for needle connection.
An unpopulated (blank) probe card is provided with the probe card adapter assembly. Additional
blank probe cards are available through your Keithley sales representative.