Control or Measure Parameter
© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | 27
4. Operation
The procedures show the steps required to make sure the ADTS 405 Mk2 is serviceable and
of the settings required to test an aircraft system or component in the following notation:
1. All key presses are highlighted in bold and shown as identified on the keypad.
2. Key presses inside brackets e.g., [MORE], are soft key presses (i.e, function key
selections {F1 to F4} indicated on the display screen).
For further information on a particular ADTS function and using the Help System refer to
Section 7.2.19, “HELP,” on page 80. The help information includes further details of the
function and details associated functions.
For a summary of Setup and Configuration procedures refer to the Section 3.4, “Operation
Quick Reference,” on page 19.
4.1 Control or Measure Parameter
To change the (displayed) parameter:
a. Value parameters: Press the parameter key e.g., press SPEED/Qc to display airspeed.
b. Rate parameter: Press the associated parameter key followed by the rate key for that
channel. e.g, display airspeed rate, press SPEED/Qc then RATE. ROC/Ps Rate may be
directly pressed without first pressing ALT/Ps.
Note: The displayed parameters depend on the last keys pressed.
To display two parameters:
a. Press each value parameter in turn, e.g., display altitude and airspeed together, press
ALT/Ps then SPEED/Qc.
b. In control mode, an arrow, at the right-hand end of the aim value, indicates the last
parameter selected. This can be changed by entering a new value.
To display a value parameter together with its rate:
a. Press the parameter key followed by the associated rate key, e.g, display airspeed and
rate of speed together, press SPEED/Qc then RATE.
Note: If ROC/Ps RATE is pressed, the display automatically shows ALT and ROC.
See Section 7.2.9, “RATE,” on page 75 for display details.
4.1.1 Display Functions
The display normally shows pressures and rates or aeronautical equivalents. It can be setup
to show, at the same time, one parameter (single), two parameters (dual) or three
parameters (triple).
The triple display always shows altitude and airspeed; with pressure units selected, the
display always shows Ps and either Qc, Pt or EPR. When ALT or CAS are selected the display
WARNING See Safety and Installation Guide 124M8686 for guidance on
safety and standard operating conditions.
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