Section 9 Appendix
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
9-13
Sec. Condition
Cat. Test Category Description Notes
16.0 Power Input
Z
Equipment intended for use
on aircraft DC electrical
systems where the DC
supply has a battery whose
capacity is small compared
with the capacity of the DC
generators.
200 ms
power
interruption
capacity
17.0 Voltage Spike
A
Equipment intended primarily
for installation where a high
degree of protection against
damage by voltage spikes is
required.
18.0 Audio Frequency
Conducted
Susceptibility-
Power Inputs
Z
Equipment intended for use
on aircraft DC electrical
systems where the DC
supply may not have a
battery of significant capacity
floating on the dc bus at all
times.
19.0 Induced Signal
Susceptibility
ZC Equipment intended primarily
for operation in systems
where interference-free
operation is required on
aircraft whose primary power
is constant frequency or DC.
20.0 Radio Frequency
Susceptibility
(Radiated and
Conducted)
Y Equipment
and
interconnecting wiring
installed in severe
electromagnetic
environments and to show
compliance with the interim
HIRF rules.
Radiated: K
Minimum
level at all
frequencies
to be
100V/m
21.0 Emission of
Radio Frequency
Energy
M
Equipment in areas where
apertures are EM significant
but not in direct view of
aircraft antennas, such as
passenger cabin or cockpit.
22.0 Lightning
Induced
Transient
Susceptibility
A3J3
3
Equipment interconnected
with wiring installed within
any airframe or airframe
section when structural
resistance is also a
significant source of induced
transients, (i.e., carbon fiber
Level 4 for
MSU and
OAT Probe
pins.