RTCA/DO-160 Standards: RTCA/DO-160 Section 18: Audio Frequency Conducted Susceptibility – Power Inputs

This test determines to see if the EUT will operate as specified when audio frequency interference is applied to the AC and/or DC power input. This test method is almost to MIL-STD 461F test method CS101 with the only difference being test level and frequency range. The EUT must be tested while operating at both minimum and maximum current draw (if applicable), and at the AC power frequency extremes if designated for use with Variable Frequency systems

Equipment Categories
There are three DC power Equipment Categories (R, B, and Z) that indicate the type of power used by the equipment and the type of DC power source with which the equipment is compatible.

AC Power Equipment Categories are specified as R and K. Category R is used with an additional designation (a two character code), placed in parenthesis following the Category designator, indicates that the equipment has been tested for use with Constant Frequency (CF), Narrow Variable Frequency (NF), or Wide Variable Frequency (WF). Category K designates that the EUT has been tested for use with any type of AC power input, and tested to a higher level of voltage distortion than category R.

RTCA/DO-160 provides standard procedures and environmental test criteria for testing airborne equipment for the entire spectrum of aircraft from light, general aviation aircraft and helicopters through the "jumbo jets" and SST categories of aircraft. The tests outlined in this standard are performed to meet FAA and international regulations for electrical and electronic equipment installed on commercial aircraft.

RTCA/DO-160 G is the current version of this standard. Coordinated with EUROCAE, RTCA/DO-160G and EUROCAE/ED-14G are identically worded. DO-160G is recognized by the International Organization for Standardization (ISO) as de facto international standard ISO-7137.

Retrieved from RTCA List of Available Documents (August 2013) on 11/26/13
Retrieved from New EMC Requirements for Commercial Avionics: RTCA/DO-160G on 11/26/13