Introduction
© 2015 General Electric Company – All rights reserved. ADTS 405 Mk2 Instruction Manual-English | 83
6.2.31 SETUP, [MORE], [CONTROL], [Ps Pt DUAL]
1. Dual channel is the normal mode of operation where both Ps (static) and Pt (pitot)
channels are connected to the unit or aircraft system under test.
a. To test instruments such as airspeed indicators with only the Pt (pitot) channel
connected, use SETUP, [MORE] [CONTROL] [Ps Pt DUAL] and select [Pt].
b. When using [Pt ONLY], the blanking cap must be removed from the Ps (static)
channel so that Ps is open to atmosphere. All the functions associated with the Ps
channel are disabled.
Similarly, to test instruments such as altimeters with only Ps (static) channel connected:
a. Select SETUP, [MORE] [CONTROL] [Ps Pt DUAL] and select [Ps]. All the functions
associated with the Pt channel are disabled; the blanking cap can remain fitted to
this channel.
To return to dual channel operation,
a. Select SETUP, [MORE], [CONTROL] [Ps Pt DUAL] and select [DUAL] and connect both
channels to the unit or aircraft system under test.
b. The channel controllers must be in measure mode when changing [CONTROL].
c. The Ps (static) pressure must be within ±10 mbar of the recorded QFE to select Pt only. The
control channel selection can be locked in CONFIG.
6.2.32 SETUP, [MORE], [DISPLAYS/OPTIONS], [DISPLAY TYPE]
The display can be configured for SINGLE, DUAL or TRIPLE displays. The key press sequence changes
the display parameters, the 2nd key press column shows the parameter that changes on entry of a
numeric value.
The tables show all available parameter combinations with an associated key press sequence.
Table 6-1: Aeronautical Units Dual Display
* The Mach parameter changes on numeric entry
1st Key
Press
2nd Key
Press
Upper
Display
Lower
Display
ALT SPEED ALT CAS or TAS
ALT MACH ALT MACH
Any key ROC ALT ROC
SPEED RATE CAS or TAS RATE CAS
MACH* RATE MACH RATE MACH
SPEED MACH MACH CAS/TAS
SPEED ALT ALT SPEED
MACH ALT ALT MACH
MACH SPEED MACH SPEED
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