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Chapter 6. REFERENCE AND SPECIFICATION
6.2.29 SETUP, [LIMITS]
The ADTS 405 is preprogrammed with the manufacturer's STANDARD, CIVIL and MAX limit sets.
Different sets of additional aircraft limits can be programmed using the CONFIG mode. SETUP,
[LIMITS] allows the selection of the set of limits to be used, each set of limits is identified by its
aircraft name.
Note: The ADTS 405, when delivered, contains "Standard" and "Civil" limits; to
set and store "Max" limits, for the first time, enter configuration. The "Max"
limits depend on the range of the pitot channel either 850 or 1000 knots, see
section 1.3, operating limits.
1.
Use [NEXT] or [PREV] to step through the aircraft names select [SEL] and press QUIT when
the display shows the required name.
2.
Use CONFIG, [LIMITS] to program the sets of limits. Each set of limits includes:
c.
The set of limits used at power-up (default) can be selected using CONFIG, [LIMITS],
[DEFAULT AIRCRAFT]. The default aircraft settings can be locked using CONFIG, [LIMITS],
[LOCK AIRCRAFT] so that the operator cannot change the limits.
d.
If the selected set of limits result in the measured pressures being outside the limits, the
display shows the warning message "OUTSIDE LIMITS GO TO GROUND" the Ps and Pt
channels should be taken to ground or to pressures within the new selected limits. This
warning message is also displayed if the pressures measured directly after power-up are
outside the limits used at power-up.
e.
After selecting a set of limits, the altitude correction value can be changed using SETUP,
ALT. The maximum Mach limit can be changed or switched off using SETUP, MACH.
6.2.30 SETUP, [OSC]
The ADTS 405 has an oscillation facility that causes the pressure to oscillate about the aim value at
a user defined frequency and amplitude.
a.
Select oscillation channel Ps or Pt.
b.
Select [AMPL/FREQ] and enter the required amplitude and frequency.
c.
Select [START] to start oscillation.
d.
Select [STOP] to stop oscillation at the end of a half cycle.
e.
Select [FREEZE] to stop oscillation immediately.
82 | ADTS 405 Mk2 Instruction Manual-English
Max ALT
Min ALT
Max CAS
Min CAS
Max Mach
Max ROC
Max Rate CAS
Max Ps
Min Ps
Max Qc
Min Qc
Max Rate Ps
Max Rate Qc
ARINC limits on or off
Altitude correction value
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