User's Manual
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 1−40
15 Dec 2005
F. Pressure Transducer Module
The Pressure Transducer Module (PTM) converts static pressure to a low speed ARINC
429 signal used by the VSI/TRA to calculate altitude rate. Figure 1−15 shows a graphical
view of the PTM. The PTM can be mounted in any pressurized area of the aircraft.
Table 1−10 gives items and specifications particular to the unit.
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Figure 1−15. Pressure Transducer Module