Req. 5.3.4.2: "GPS Time Hack Integrity Check"

The LAT FSW shall perform an internal integrity check of the input GPS time hack to verify consistency with the expected internal clock behavior, reporting inconsistency to the ground.

Basis (help)

[2] (3.2.5.2.1)

2: "LAT Instrument - Spacecraft Interface Requirements Doc." (NASA 433-IRD-0001)

3.2.5.2.1: "Pulse Per Second (PPS) Bus"

The SC shall provide to the LAT, across an LVDS interface, a 1PPS signal accurate to +/- 1.5 usec when GPS provides the timing signal.

Context (help)

Test(s)

005: Vehicle Signals Interface Verification

This test shall verify the timing and processing of all signals from the Spacecraft, as defined in the LAT-SC ICD [28].