Further Testing
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ADTS 405 R/F Mk2 Instruction Manual-English | 65
d.
Press
Ps
and wait for the aim values to be achieved.
e.
If auto-zero is enabled, wait for an auto-zero to take place.
Note:
During auto zero, the valve state changes on the mimic panel and the
display shows “Zero” in place of the airspeed aim value. The time to auto-zero
should be less than 1 minute from achieving the aim value.
f.
Wait for a minimum of 20 seconds after auto-zero before proceeding.
g.
Observe the measured values of Ps and Qc on the display for 1 minute.
h.
Check that the displayed value of Ps remains within ±0.068 mbar.
i.
Check that the displayed value of Qc remains within ±0.068 mbar.
Note:
If a further auto zero takes place, allow the display to stabilize following
the auto zero before proceeding.