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PREPARATION FOR USE
Moisture Protection
TP04300 Series Interface & Applications Manual 2-45
Moisture Protection
Introduction With reference to the typical test site, there are two principal areas to protect from moisture:
1. The DUT and the test socket in which the DUT is seated (the area below the thermal cap
onto which ThermoStream air is directed)
2. The tester platform (test board) and its test cables, socket lead wires and related intercon-
nections (normally exposed to room air temperatures)
See below for how to insulate the DUT and Socket, and how to use purge air for the tester
platform area.
Typical Test Site
(Head, Cap, Shroud,
DUT, Air Purge
Manifold)
12029IA.jpg
Insulating the DUT
and Socket
Although the pneumatic design of the system and conditioning of ThermoStream airflows
works to deliver dry air to the DUT within or below the thermal cap, it is necessary to provide
a tight seal between the lower edge of the thermal cap and the upper surface of the tester
platform.
To make a tight seal, install the provided silicone foam insulating material onto the tester
platform surface, as is described in Insulation (Minimizing Heat Conductivity), page 2-47.
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