GE PACE5000 User Manual page 76

6 Reference and Specification
Aeronautical option
The aeronautical option is a specialised application of the PACE instrument.
Special application note:
The PACE instrument must be set-up very carefully so that the aeronautical pressures applied
do not exceed maximum pressure values and rates of change.
Leak testing
Cautions:
1. Do not exceed the maximum pressures stated in the appropriate Component
Maintenance Manual for the unit under test.
2. Carefully de-pressurize all pipes to atmospheric pressure before disconnecting and
connecting to the unit under test.
Before testing an aeronautical component carry out a leak test. This task sets the test pressure,
dwell time at the test pressure and the leak test time.
At the start of the test, the instrument applies a test pressure to the user system. A dwell time
allows the user system to stabilise.
Aeronautical testing
The aeronautical task enables control and measurement of altitude and airspeed in aeronautical
units such as feet and metres (altitude) and knots, mph, km/h (airspeed). This task utilises dual
pressure displays to show the parameter and the rate of change of Altitude, Airspeed, Mach and
Airspeed with Mach number.
The aeronautical task enables the testing and calibration checking of aeronautical indicators and
system components by controlling and displaying values and rates in aeronautical units.
When using a single instrument, the pressure supply must be changed when changing from
Altitude to Airspeed.
K0443 Issue No. 3 6 - 22