The Skytrax-100B REQUIRES an Altitude Input, even when being used for Weather Data use only.
The Altitude Input may be RS-232 or Arinc 429 data format.
Even when the "ADS-B" Setting is set to "OFF" the Skytrax-100B will FLAG Itself as INVALID and indicate a RED Led indication without a Valid Altitude Input.
This fault is especially apparent when the Skytrax-100B is interfaced to an EX-5000 Multi-Function Display configured for "CAPSTONE RADIO" as a Datalink Weather Input.
This fault may not be apparent on the associated IFD-5xx/4xx Navigator.