Ceilometer CT25K
User’s Guide CT25K-U059en-2.1
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delivers a control signal for the heating via an amplifier, processor board A-
to-D Converter, and software.
5.3.5 Board Frame DMF51
The frame DMF51 is a subassembly into which the Processor Board
DMC50B, Ceilometer Interface Board DCT51, DC Converter DPS52 and the
optional modem are plugged. Its mechanical construction suits well for
housing printed circuit boards. Being fully metallic, it protects the electronics
against electromagnetic disturbances (Figure 5-9).
Figure 5-9 DMF51 Frame
The printed circuit boards are of size 100 x 144 mm. Each board is provided
with a front panel that is securely fastened with two screws to the frame,
simultaneously providing a good electrical ground connection.
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