Viavi AVX-10K Operation Manual page 118

Altitude Reference
Aircraft Separation
Advanced – ADSB
Auto DF Setting
Position Decode
22135254
January 2024
Table 4-4 ADS-B Auto Test Unique Settings
Setting
Barometric
Test Type
Test Type >
Advanced –
squitters to determine position) or Local (uses one squitter and
AVX-10K Operation Manual
Set to 'YES' and enter test altitude for comparison to
transponder reported barometric altitude
Allows selection between AC20-165 FAA Advisory Circular for
testing ADS-B installed systems and CS-ACNS applicable
EASA requirements
If CS-ACNS test type is selected, select either 3 NM or 5 NM
separation value.
Choose DF17 (typical – for Mode S transponders) or DF18
(1090MHz emitters). Most often this should be left as DF17.
The DF18 option is used for beacons placed on obstacles
around airports or in vehicles that are travelling around
Choose Global (most common, decodes two consecutive
entered GPS LAT/LON position to determine position)
Chapter 4 Transponder
ADS-B Auto Application
Definition
aircraft.
Rev 004
4 - 15