AMETEK Compact i/iX Series Software Manual - Manual (Page 186)

User Manual – Rev H California Instruments
Avionics Software 186
8 Option
–AMD: Airbus AMD-24 Rev C Tests
The -AMD option supports Airbus AMD-24 rev C voltage and frequency immunity tests in both AC and
DC modes (if available).
The –AMD option is based on Airbus A400M Directive: AMD-24 Issue C, Electrical characteristics of
aircraft AC and DC systems Appendix C dated March 22, 2005.
Future revisions of the AMD-24 directive may be issued over time and updates may be made
available to cover any changes in test levels, durations, procedures etc. Furthermore, the
–AMD
option is completely data file driven to allow a large degree of customization by the end-user if needed
so many changes can be supported without the need for software updates.
This section of the manual explains the limitations of this test option, the use of special features
unique to this option, and gives a complete layout of all tests performed by this option.
This manual is not intended to elaborate on the intent or purpose of the immunity tests and the
expected behavior of the EUT as described in the Airbus documents. It is assumed that the end-user
is familiar with the content of the AMD-24 test standard.
Note: All three phase California Instruments power sources have a phase rotation of A C B where
phase C is +120° from phase A and phase B is +240° from phase A. Some interpretations of this
specification call for phase B to be +120° from phase A. The easiest way to accomplish an ABC
phase rotation is to simply switch phase B and phase C wires at the EUT input. Alternatively, the
programmed phase angles for B and C can be changed but this will require editing of the test scripts
and is not recommended.
8.1 Test Coverage
The comprehensiveness of the tests that can be performed with the –AMD option is determined
primarily by the capabilities of the power source used. Tests that are outside the hardware capabilities
of the power source used will not be enabled and cannot be selected. For these tests, additional
equipment may be required as indicated.
8.1.1 MX Series –AMD Option Limitations
The extent of coverage of the –AMD option as implemented on the MX Series platform is shown in
the table below. Tests marked with an „x‟ generally require additional hardware to be used. Tests
marked „N/A‟ are not applicable to the corresponding table. Tests marked with a „
 ‟ are covered by
the –AMD tests. Tests marked with a „P‟ require arbitrary waveform capability, which is available on Pi
models or base models with the –ADV option only. Additional implementation issues may apply as
well as indicated in section 8.1.1.1.
Furthermore, the MX Series does not meet the required 1.25% maximum Vthd over the 360 to 800Hz
frequency range required for the distorted voltage test per Appendix D.
Note: The MX15 Series power sources are single phase output only and therefore all three phase
tests are not available on the MX15.
No. Description Table
SVF
Table
TVF
Table
SCF
Table
TCF
No. Description Table
LDC
101
Steady State Voltage and
Frequency
    101 Steady State Voltage 
102 Voltage Transients    
101-
APU
Steady State Voltage 
103 Voltage Modulation     102 Voltage Transients 