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Wear rubber gloves when handling pin boards. If rubber gloves are not
Caution
available, hold the board by its edges as shown in Figure 3-2.
6. Insert each pin board into the desired slot and connect the cable assembly of the board to
the corresponding position on the measurement pin mounting ring.
7. Reconnect the pin board control cables, reinstall the board struts, and replace the bottom
panel.
Installing a Port Expander
To install a port expander (Option 340), perform the following procedure:
1. Remove the port expander from its antistatic envelopes.
2. Attach the port expander on the SWM as shown in Figure 3-5.
3. Tighten the four thumb screws of the port expander.
Ten BNC shorting caps are installed on the coaxial connectors of the port expander at the
factory. Leave the shorting caps on the connectors until the connectors are used. When you
use the port expander connectors, remove the shorting caps and keep them in a safe place
because the caps may be used later.
Installing the SWM on a Wafer Prober
The prober manufacturer and the customer are responsible for mounting the HP 4089B onto
your wafer prober, and subsequent adjustment and service. Hewlett-Packard will, however,
provide technical assistance regarding SWM installation upon request. Contact your nearest
HP Service Oce for assistance.
Figure 3-5. Installing a Port Expander
Switching Matrix Installation 3-9
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