Table 9-3: Airbus Mode Voltage Modulation - Ametek California Instruments MX15 Series User Manual

Ac and dc power source

Table of Contents

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

DO160 / EUROCAE

Frequency (Hz)

1.7

100

200

Note:

Voltage modulation levels change linearly from frequency 1.7Hz to 10Hz and again

from 25Hz to 75Hz. See Figure 9-4.

Frequency (Hz)

Volt RMS

0.18

1.24

0.18