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POWER INTERRUPT
This test requires a numeric entry value equal to the test number. The tests are grouped as
follows:
•
Test numbers 1 through 15 are for all Standard and Groups. See Figure 9-6 for details of
the tests.
•
Test numbers 16 and 17 for all equipment that does not incorporate digital circuit. Test
number 16 will drop the output to zero voltage for 50 ms. Test number 17 will drop the output
to zero voltage for 200 ms. Test numbers 21 through 26 are applicable for Groups 2 and 3
only for EUROCAE standard and category A(NF) and A(WF) for RTCA2. Output frequency
will be set to the F1 value for 1 second prior to the test. The output frequency will remain set
to the F2 value when the test is completed. This will allow the user to apply sequence of
power interrupts. See Figure 9-7 for detail of the tests.
DO160 Table 16-1: Test conditions for equipment with digital circuits.
NOTES
1:
Definitions:
T1
T2
T3
V MIN
2:
Tolerance to T1, T2, T3 = ± 10%
3:
Test condition numbers 8 and 15 are for category Z, dc powered equipment only.
Applicable
Category:
Test
1**
2
Condition No.
T1 (ms)
2**
10
T2 (ms)
<1
20*
T3 (ms)
<1
5
%V Nom.
0
50
(V min)
*
Voltage will not reach zero in this test condition.
**
Equipment performance standards may require to repeat test n°1 with T1 varying from 5 to 200 ms by step
defined in the test equipment performance standards (step typically comprised between 5 ms and 20 ms depending
on equipment design.
MX15
V (NOM)
% of V NOMINAL
(V MIN)
0 VOLTS
Power interrupt time
Time it would take for the applied voltage to decay from V (nom) to zero volts.
Time it would take for the applied voltage to rise from zero to V (nom) volts.
The minimum level (expressed as a percentage of V NOMINAL) to which the applied
voltage is permitted to decay.
A
A, Z
3
4
5
6
25
50
75
100
20
20
20
20
5
5
5
5
15
10
5
0
Figure 9-6: Power Interrupt
T1
T2
T3
Z
A, B, Z
7
8
9
10
200
1000
10
25
20
20
50*
50*
5
5
20
20
0
0
80
50
A, Z
11
12
13
14
50
75
100
200
50
50
50
50
20
20
20
20
0
15
5
0
Z
15
1000
50
20
0
141
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