barfield DPS1000 - Page 64

56-101-01175 Revision H Page | 64
5. Verify that the alternate pneumatic system(s) (co-pilot, standby auxiliary, etc.) shares
the same pneumatic lines. If so they must be sealed or isolated from the current
pneumatic system about to be tested.
6. If necessary, change the displayed parameters on the Test Set to those required.
This can be accomplished by selecting “Display Setup” followed by selecting the
desired aeronautical parameters.
7. If necessary different units can be selected by selecting the icon “Units” from the
Main Menu.
8. Verify the limits selected are appropriate for the aircraft and/or Instruments that are
going to be tested.
9. If there is a height difference between the Test Set and the aircraft or instruments
about to be tested, enter the Altitude Correction.
 From Main Menu, select the blue icon “page 2”. A panel opens with four selections.
 Touch “Setup 1”. The “Limits View/Select” screen is displayed.
 Select “Altitude Correction” and touch “OK”. A numbered keypad appears.
 Input the altitude difference (with aircraft / instruments higher than Test Set, the value
would be entered as a (+) positive number).
10. At this time confirm the following have been accomplished:
 The Test Set and hose combination have been leak tested
 The Test Set hose(s) Static (Ps) and Pitot (Pt) has been connected to the aircraft or
instrument to be tested
 The Test Set limits have been configured with the appropriate vales to protect the
aircraft system or instrument(s) about to be tested
 If required, the altitude correction value has been entered
11. Touch the “Control” icon.
 The Test Set will transition from Leak Measure to Control mode. Note the ALT and
CAS target are preloaded with the current pressure altitude and CAS values.
 Wait for “Resuming Control” phase to complete (typically 4 seconds)
12. Set the ROC Target value as specified by the AMM, CMM or AP “authorized
procedure”.
13. Set the ALT Target value as specified by the AMM, CMM or AP.
14. Continue with the next ALT Target value required:
- For test procedures requiring small step changes in ALT, there is a “Nudge”
feature available that will simplify having to enter multiple small changes in
Target values.