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User Manual
POWER INTERRUPT
This test requires a numeric entry va
Test number
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. Te
for 200 ms. Test numbers 21 throu
standard and category A(NF) and A(WF) for RTCA2. Output fre
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 a sequence of power interrupts. See Figure 9-7 for
detail of the tests.
DO160 T
able 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 Con-
1**
2
dition No.
T1 (ms)
2**
10
T2 (ms)
<1
20*
T3 (ms)
<1
5
%V Nom.
0
50
(V min)
*
Volt
age will not reach zero in this test condition.
**
Equi
pment performance standards may require to repeat test n° 1 with T1 varying from 5 to 200 ms by step defined in
the test e
quipment performance standards (step typically comprised between 5 ms and 20 ms depending on equipment
design.
California Instruments
lue equal to the test number. The tests are grouped as follows:
s 1 through 15 are for all Standard and Groups. See Figure 9-6 for details of the
gh 26 are applicable for Groups 2 and 3 only for EUROCAE
V (NOM)
% of V NOM
INAL
(
V MIN)
0 VOLTS
P
ower interrupt time
T
ime it would take for the applied voltage to decay from V (nom) to z
Time it would take for the applied voltage to rise from zero to V (nom) volts.
The m
inimum 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
10
20
20
20
2
5
5
5
5
15
10
5
0
Figure 9-6: Power Interrupt
st number 17 will drop the output to zero voltage
T1
T2
T3
Z
7
8
9
0
200
1000
10
0
20
20
50*
5
5
20
0
0
80
quency will be set to the F1 value
ero volts.
A, B, Z
A, Z
10
11
12
13
25
5
0
75
100
50
*
5
0
50
50
20
20
20
20
50
0
15
5
2253i / 2253iX
Z
14
15
200
1000
5
0
50
20
20
0
0
119
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