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Druck ADTS 505 User Manual
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K0260 Issue No. 8
3
3.7.6 Airspeed Switch Test
The following example shows how an airspeed switch can be functionally checked.
Note:
For low airspeed switches (i.e. 130 knots) Pitot only could be used, 3.7.2.
•
Press
LEAK MEASURE/CONTROL
to enter control mode. Press
SPEED/Qc
.
•
Enter an Aim value below the operating limits of the switch (i.e., airspeed switch operating at 130
knots ±2 knots set 127 knots).
•
If necessary, press
RATE
and enter a change of airspeed low enough to observe switch operation.
•
Press
ENTER
and observe the airspeed changing.
•
Using the NUDGE facility, to step-increase, at a fixed increment (0.2 knots), the Aim value.
•
Increase the Aim until the switch operates (contacts close) and record the value.
•
Change the Aim to above the airspeed operating range (i.e. 133 knots). Repeat the steps, decreasing
the Aim value until the airspeed switch operates (contacts open) and record value.
•
On completion of testing, select
GROUND
and wait for the `Safe at Ground' message to be displayed,
see 3.7.8., refit the pitot and static blanking caps.
•
This procedure can be repeated.
•
The above method can be used for the other parameters:
Examples:
Altitude switch
-
low altitude warning
-
landing gear configuration warning
-
height lock
Mach switch
-
Speed brake scheduling
-
Mach cruise lock
Summary of Contents for Druck ADTS 505
Page 1: ...GE Measurement Control Druck ADTS 505 Air Data Test Set User Manual K0260 ...
Page 14: ...xii K0260 Issue No 8 Druck ADTS 505 User Manual ...
Page 54: ...3 26 Operation K0260 Issue No 8 ...
Page 55: ...Druck ADTS 505 User Manual 3 27 K0260 Issue No 8 3 ...
Page 56: ...3 28 Operation K0260 Issue No 8 ...
Page 66: ...5 4 Testing and Fault Finding K0260 Issue No 8 FIGURE 5 1 FAULT FINDING CHART ...
Page 80: ...5 18 Testing and Fault Finding K0260 Issue No 8 Intentionally left blank ...
Page 124: ...6 44 Reference and Specification K0260 Issue No 8 Intentionally left blank ...