Operating Instructions - CPA2501
35
Air Data Test Indicator
CPA2501
6.4.4.2 Qc or Pt Emulation
A Ps/Qc transducer can emulate a Pt Channel and A Ps /Pt transducer can emulate a Qc channel both
using the formula Pt = Ps + Qc. In the Transducer Channel selection menu the native transducers are
always listed first and the Emulated Channel is listed last. Figure 6.4.4.2. shows the Ps and Qc channels
listed in the top two positions and the Pt listed last. This indicated that the native transducer in this device
is a Ps/Qc transducer and the Pt channel is emulated.
Figure 6.4.4.2 - Transducer Delta Emulation
6.4.4.3 Transducer Filter
The Filter is an electronic filter to smooth out the readings. Because of differences in resolution, greater
filtering may display a more stable reading for some pressure units. Turn off the Filter by selecting “Off”,
select varying degrees of filtering for the current units by selecting “Low”, “Normal” or “High”.
Figure 6.4.4.3 - Transducer Filter