T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
N.
GINA BIT checks
1.
BIT codes
a.
IN TEST: Listed for the duration of a PBIT or
IBIT tests
b.
DEGD
(1) BIT failure
(2) Equipment OFF or not installed
(3) 1553 bus failure on both channels
c.
OPGO
(1) No detected BIT failure
(2) 1553 bus failure on one (1) channel
d.
GO
(1) No detected BIT failures
(2) Dual 1553 bus communications are
established
2.
Power-Up BIT (PBIT) checks
a.
Automatically performed on GINA (and other
WRA [Weapons Replaceable Assembly]
equipment) when power is first applied to
aircraft and weight-on-wheels
b.
Most extensive form of BIT check
3.
Initiated BIT (IBIT)
a.
Manually selected on the ground by pilot or
maintenance
Original (9-98)
Page 24-42
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