Set-Up, Alt; Set-Up, Speed [Auto Zero]; Set-Up, Speed [Cas/Tas] - GE Druck ADTS 405 User Manual

Druck ADTS 405 User Manual
SETUP, ALT (Figures 6-1 and 6-2)
This function allows the altitude correction value to be changed. If altitude correction
is in use the display shows, after warm-up, "A/C" in the lower right hand corner.
The altitude correction facility corrects for the pressure difference when the ADTS 405
and the aircraft system or components under test are at different heights.
If the ADTS 405 front panel is vertical, use the altitude reference level shown on the
front panel. If the ADTS 405F front panel is horizontal, use the altitude reference level
shown on the side of the case.
Enter the height difference between the aircraft system and the ADTS 405 altitude
reference level. The units of entry are the current units or default aeronautical units,
see CONFIG, [UNITS], [AERONAUTICAL].
SETUP, SPEED, [AUTO ZERO]
This function enables or disables the auto zero function. When enabled, this optimizes
airspeed accuracy at low airspeeds.
When enabled the ADTS 405 performs an auto zero when the following conditions are
met:
1. Ps and Pt pressures are stable.
2. If in control mode, a zero airspeed or Qc aim has been achieved.
3. If in leak measure mode, the airspeed is less than 20 knots (or Qc equivalent).
The auto zero will be initiated within one minute of achieving a new aim value and
thereafter, every five minutes.
The auto zero sequence can be interrupted at any time by entering a new command
over the key-pad or option interface.
The controllers must be in measure mode when enabling or disabling auto zero.
SETUP, SPEED, [CAS/TAS]
This function changes the airspeed display between Calibrated Airspeed (CAS or Vc)
and True Airspeed (TAS or Vt). For testing purposes, CAS is equivalent to Indicated
Airspeed (IAS).
The value of TAS displayed depends on the Pt temperature, see SETUP, SPEED, [Pt
TEMPERATURE].
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K114 Issue No. 9
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