AMETEK MX15 Series User Manual
Page 146
User Manual
– Rev M
California Instruments
MX15
146
VOLT UNBALANCE
This test is not available on the MX15 Series since only a single phase output is available.
WAVEFORM DISTORTION
This test will generate a 5% THD voltage distortion on the output voltage waveform at the
nominal voltage set. (115 V or 230 V) A clipped sine wave generates the required distortion.
The test will last for 30 minutes. The
key (backspace) will terminate the test at any time.
VOLTAGE MODULATION
This test requires a numeric value entry equal to the modulation rate in Hz. This entry value
must be between 1 Hz and 200 Hz. The amplitude modulation is calculated based on the
modulation rate as defined in Figure 9-4. This test will last for 2 minutes.
Note that the Airbus voltage modulation test levels are specified in peak to peak voltage instead
of Vrms. Table 9-3 shows the levels for the Airbus mode versus the DO160 and EUROCAE
modes as implemented in the MX15 firmware. The actual requirement for Airbus ABD0100.8 is
now specified in Vpeak peak instead of Vrms so the Airbus mode should not be used. Use the
DO160 or EURO/CAE mode instead.
Modulation
Frequency (Hz)
DO160 / EUROCAE
Modulation
Frequency (Hz)
AIRBUS
Volt RMS
Volt RMS
1
0.18
1
0.5
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 9-3: Airbus mode voltage modulation.
Note: Voltage modulation levels change linearly from frequency 1.7Hz to 10Hz and again
from 25Hz to 75Hz. See Figure 9-4.