User manual

User Manual – Rev B FCS Series II
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 8-6 for details o
the tests.
f
• 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 his will allow the user to apply
sequence of power interrupts. See Figure 8-7 for detail of the tests.
when the test is completed. T
T1
V (NOM)
% of V NOMINAL
(V MIN)
0 VOLTS
T2 T3
DO160 Table nditio equipm h digital circu
ES 1 s:
T1 Power interrupt time
e it ay from V (nom) to zero volts.
Time i ld take applied voltage to rise from zero to V (nom) volts.
V MIN The m m leve ssed as a pe e of V NOM which the applied
.
2: to T1, T2, T3 = ±
3: Test condition n t only.
16-1: Test co
: Definition
ns for ent wit its.
NOT
T2 Tim would take for the applied voltage to dec
T3 t wou for the
inimu l (expre rcentag INAL) to
voltage is permitted to decay
Tolerance 10%
umbers 8 and 15 are for category Z, dc powered equipmen
Applicable
Category:
A A, Z Z A, B, Z A, Z Z
Test Con-
dition No.
3 4 7 9 10 11 12 13 14 15 1** 2 5 6 8
T1 (ms) 25 50 75 100 200 1000 10 25 50 75 100 1000 2** 10 200
T2 (ms) 20 20 20 50* 50 50 50 50 <1 20* 20 20 20 50* 50
T3 (ms) 5 5 5 20 20 20 20 20 20 20 <1 5 5 5 5
%V Nom.
(V min)
15 10 5 0 0 80 50 15 5 0 0 0 50 0 0
* Voltage will not reach zero in this test condition.
** Equi
defined i ing
on equip
Figure 8-6: Power Interrupt
pment performance standards may require to repeat test n°1 with T1 varying from 5 to 200 ms by step
n the test equipment performance standards (step typically comprised between 5 ms and 20 ms depend
ment design.
California Instruments 120