Docking Gusset
Assemblies
The Docking Gusset Assembly
(DGA) is the piece that mounts to your handler or prober. It normally
consists of a plate to which the docking gusset bars and coarse alignment
pins are attached.
The docking gusset bars are made of aluminum to the exact height required
to space your test head the proper distance from your handler or prober.
They have precision receptacles for receiving the guide pins on the Docking
Assembly (DA), and cam followers that engage the docking cams on the
DA.
 There
are two types of DGA assemblies:
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| inTest 4-point docking
gusset assembly for the Teradyne Flex system. |
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| inTest 3-point docking
gusset assembly for the Teradyne Tiger system. |
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1.
Standard DGA.
The standard DGA is mounted to your peripheral
using mounting screws. The docking gussets are mounted to the plate
with screws. The calibration fixture is then used to calibrate the
gusset bshings relative to the interface means. These gussets are
not fixed to the gusset plate with dowel pins.
Since the calibration bars for these types of DGAs align the gusset
bushings to the interface means, you often don’t have to precisely
locate or calibrate the gusset plate.
As with the guide pins on the DA, when the screws securing the DGA
to the handler or prober are loosened, you can move the DGA in the
X and Y directions for exact positioning. |
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| Docking gussets are precision-pinned
to the gusset plate for repeatable alignment and quick
changeover |
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| Mix plate allows a single
plate to be used with multiple test heads by simply changing
gussets |
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| Docking gusset and coarse
alignment pin detail, showing plate cutout for a short
Z-stack requirement |
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2.
Mix-Plate DGA (DGAM).
The mix-plate DGA is used when you “mix”
different docking families on the same gusset plate.
In this case, the docking gussets are precisely located (relative
to the gusset plate) with dowel pins.
The gusset plate is the piece that is calibrated to the interface
means. It has precision guide pin bushings that accept the pins from
the calibration bar during the calibration process. The calibration
bars for DGAMs then do not calibrate the gussets (the gussets are
pinned to the plate), but rather calibrate the plate to the interface
means (handler or prober). |
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This illustration
shows a typical docking gusset assembly and shows how it aligns to
your docking assembly.
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| Docking Gusset Assembly(top)
and Docking Assembly (bottom). |
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