Model 9139B Probe Card Adapter Instructions
Section 4: Maintenance
9139B-901-01 Rev. A / January 2019
4-3
Moving PCA cable connections
Hazardous voltages may be present on an installed probe card even after the output is
disconnected, that if contacted, may cause personal injury or death.
Typically, prober pin 1 is connected to system pin 1, prober pin 2 is connected to system pin 2, and
so on. If an application requires different connections, you can connect the prober pins to other
system pins.
If you have an S530 or S535 parametric test system, each device under test (DUT) cable is
independently connected to the matrix. To move a PCA connection, unplug the DUT cable from
the matrix.
Cleaning
Cleaning is important to ensure accurate measurements. The cleaning process removes
contamination that causes shunt resistance (leakage) between measurement paths.
Contamination can take many forms. Some sources of contamination are:
•
Residue remaining after incomplete cleaning
•
Residue after using improper or contaminated cleaning fluids
•
Residue from fingerprints (see
(on page 1-4) for more information)
•
Flux from soldering
•
Condensation from room conditions that do not meet Keithley specifications
Observe the following precautions when it is necessary to use solder on a circuit board:
•
Use lead-free solder, and take care not to spread the solder to other areas on the circuit board.
•
Remove the solder from the work area when the repair has been completed. Use pure water and
clean foam-tipped swabs or a clean soft brush to remove the solder.
•
Once the solder has been removed, swab only the repaired area with methanol, then blow-dry the
board with dry nitrogen gas.
•
After cleaning, allow the board to dry in a 50 °C low-humidity environment for several hours.
