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California Instruments 114
User Manual Compact i/iX Series
FREQUENCY MODULATION
This test requires a numeric value equal to the modulation rate in Hz. This value must be between
0.01 Hz and 100 Hz. The frequency modulation is calculated based on the modulation rate as defined
in Figure 9-5. This test will last for a minimum of 2 minutes.
Figure 9-5: Frequency Modulation
California Instruments 115
User Manual Compact i/iX Series
POWER INTERRUPT
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
tests.
• Test numbers 16 and 17 for all equipment that does not incorporate digital circuit. Test number 16
st number 17 will drop the output to zero voltage
gh 26 are applicable for Groups 2 and 3 only for EUROCAE
quency 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.
This test requires a numeric entry va
• Test number
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
V (NOM)
% of V NOM
(
0 VOLTS
T1
T2 T3
INAL
V MIN)
DO160 T conditions for equipment with digital circuits.
NOTES
T1 P
T2 T ero volts.
T3 Time it would take for the applied voltage to rise from zero to V (nom) volts.
inimum level (expressed as a percentage of V NOMINAL) to which the applied voltage is
able 16-1: Test
1: Definitions:
ower interrupt time
ime it would take for the applied voltage to decay from V (nom) to z
V MIN The m
permitted to decay.
2: Tolerance to T1, T2, T3 = ± 10%
3: Test condition numbers 8 and 15 are for category Z, dc powered equipment only.
Applicable
Category:
A A, Z Z A, B, Z A, Z Z
Test Condition
No.
1** 2 3 4 5 6 7 8 9 10 11 12 13 14 15
T1 (ms) 2** 10 25 50 75 100 200 1000 10 25 50 75 100 200 1000
T2 (ms) <1 20* 20 20 20 20 20 20 50* 50* 50 50 50 50 50
T3 (ms) <1 5 5 5 5 5 5 5 20 20 20 20 20 20 20
%V Nom.
(V min)
0 50 15 10 5 0 0 0 80 50 0 15 5 0 0
* Volt
** Equi
the test e
design.
Figure 9-6: Power Interrupt
age will not reach zero in this test condition.
pment performance standards may require to repeat test n°1 with T1 varying from 5 to 200 ms by step defined in
quipment performance standards (step typically comprised between 5 ms and 20 ms depending on equipment
California Instruments 116
User Manual Compact i/iX Series
T1
Vol
F1 F2
T2
0 t
T3
Test no.: 21 22 23 24 25 26
Standard: I II III IV V VI
T1 (ms) 50 50 100 100 200 200
F1 (Hz) 360 Fmax 360 Fmax 360 Fmax
F2 (Hz) Fmax 360 Fmax 360 Fmax 360
Fmax = 0 Hz for G 2/A(N
Fmax = 800 Hz for Group3/A(WF)
T2 = 20 msec
T3 = 5 msec
This test requires 160V output voltage. If the power source is set at the low voltage range, the high
voltage range will be selected before the test starts. At the end of the test, the power source will be
switched back to the low range automatically
65 roup F)
Figure 9-7: Power Interrupt for Group2/A(NF) and Group3/A(WF)
VOLTAGE SURGE
Voltage Time
Seq. No. RTCA Group 1 Group 2 Group 3 ALL
1 115 115 115 115 5 Minute
2 160 160 160 170 30msec
3 115 115 115 115 5 Sec.
4 60 70 70 70 30msec
5 115 115 115 115 5 Sec.
Table 9-5: Normal VoltageSurge Sequence
The output voltage will follow the sequence in Table 9-5. The above sequence will repeat itself three
times. Each repeat will start from sequence two. RTCA and Group 1 will run at 400 Hz. Group 2 and
A(NF) will run at 360 Hz and 650 Hz. Group 3 and A(WF) will run at 360Hz and 800Hz. The
frequency will return to the nominal setting when the test is completed. The ← key (backspace) will
terminate the test at any time.
California Instruments 117
User Manual Compact i/iX Series
FREQUENCY TRANSIENTS (Group 1 and A(CF) only)
Seq. No Frequency Time
1 400 5 Minute
2 440 150msec
3 420 1.5sec
4 400 5Sec.
5 350 150msec
6 380 1.5sec
7 400 5Sec.
Table 9-6 quence
ut voltage is set to Vnom (115 V) while the
frequency is changed per the sequence listed in Table 9-6. The test will cycle 5 times starting from
sequence 2. Steps 3 and 6 apply to A(CF) only.
FREQUENCY VARIATION
: Normal Frequency Transient Se
This test applies to Group1 and A(CF) only. The outp
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