User Manual – Rev B
FCS Series II
VOLT UNBALANCE
Standard/Group
RTCA
A(CF)
A(NF)
A(WF)
Voltage offset
6
6
6
8
Frequency 400 390/410
360/650
360/800
Standard/Group
Group1
Group2
Group3
Voltage offset
6
6
9
Frequency 400 360/650
360/800
Table 8-3: Normal Voltage Unbalance
This test will change the output voltage for phase A and B to 122V and phase C to a voltage
lower by a value specified by an offset. Refer to Table 8-3 for the offset value and the
Frequency. The test will repeat with the same frequency and phase A and B volt is set to 100V
ig
offset value. The test will last 30 minutes.
applicable. The test can be terminated at
any time
The
←
l
WA
F
Th
s
at the
nominal voltage set. (115 V or 230 V) A clipped sine wave generates the required distortion.
test will last
30 minutes. The
y (backs
e) will t
the test at
ime.
LTA
M
UL
ION
is test requires a numeric value entry equal to the modulation rate in Hz. This entry value
ust b
tw
1
an
0
T
m
de
la
is
cu
d b
d
f Vrm
-4 s ws
lev
for e A us m e ve
s t
O
a
U
CA
des im
e
in
S f
war The
tual requirement for Airbus ABD0100.8 is now
the Airbus mode should not be used. Use the
and phase C set to a h her voltage specified by the
The test will be repeated for a second Frequency if
.
key wil terminate the test at any time.
VE ORM DISTORTION
is te t will generate a 5% THD voltage distortion on the output voltage waveform
The
for
←
ke
pac
erminate
any t
VO
Th
GE
OD
AT
m
modulation rate as defined in Figure 8-4.
e be een Hz d 20 Hz. he a
This test will last for 2 minutes.
plitu modu tion cal late
ase on the
Note that the Airbus voltage modulation test le
o
vels are specified in peak to peak voltage instead
irb
s. T
ho
the
els
th
od
rsu he D 160 nd E RO
E
mo
specified in Vpeak peak instead of Vrms so
as
plem nted FC
irm
e.
ac
DO160 or EURO/CAE mode instead.
Modulation
Frequency (Hz)
DO160 / EUROCAE
Modulation
Frequency (Hz)
AIRBUS
Volt RMS
Volt RMS
1
0.5
0.18 1
1.7 0.18 1.7
0.5
10 1.24 10
3.5
25 1.24 25
3.5
70 0.18 70
0.5
100 0.18 100
0.5
200 0.18 N/A N/A
Table 8-4: Airbus mode voltage modulation.
Note: Voltage modulation levels change linearly from frequency 1.7Hz to 10Hz and
again from 25Hz to 75Hz. See Figure 8-4.
California Instruments
117
Summary of Contents for FCS Series II
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Page 89: ...FCS Series II 89 Figure 5 1 FCS System Block Diagram User Manual Rev B California Instruments...
Page 95: ...User Manual Rev B FCS Series II Figure 6 1 Calibration Setup California Instruments 95...
