User's Manual

ROCKWELL COLLINS
COMPONENT MAINTENANCE MANUAL with IPL
TDR-94, PART NO 622-9352
STEP PROCEDURE DESIRED RESULTS
h. Verify that the transponder properly transmits an
"Odd_Second" DF=17 Extended Squitter transmission that
has the exact struc ture for the "ME" field as shown in Figure
1006/GRAPHIC 34-50-96-99B-024-A01.
9.5A GPS Bus/Surface Position Extended Squitter/Time Tag
Verification (-108 status TDR-94/94D only)
a. Connect either air/ground discrete #1 or #2 (P2-53 or P1-27)
to ground (i.e., establishes the surface state).
b. Ensure that neither configuration select discrete 0 or 1
(P1-28 or P1-17) are connected to ground.
c. Provide the transponder with a GPS Time Tag signal via the
GPS Time Tag inputs (P2-37 high, P2-38 low). The GPS
Time Tag signal is a differential (0-5 Vdc) 1 ms pulse, that
repeats once per second.
d. Via the GPS/GNSS Input Data Bus, provide the transponder
with the appropriate labels and data indicated in Figure
1007/GRAPHIC 34-50-96-99B-025-A01. Each data
parameter must be updated at least one time each second.
e. Verify that the transponder properly transmits an
Even-Second DF=17 Extended Squitter Transmission that
has the exact structure for the "ME" field indicated in Figure
1007/GRAPHIC 34-50-96-99B-025-A01.
f. Verify that the transponder properly transmits the Surface
Position Message at random intervals that are uniformly
distributed over the range from 0.4 to 0.6 seconds.
g. Verify that the transponder properly transmits the Surface
Position from the top antenna port only of the TDR-94D and
from the bottom antenna port only of the TDR-94.
h. Verify that the transponder does not transmit DF=11
Acquisition Squitters while transmitting the Surf ace Position
Squitter Messages indicated in steps e, f, and g.
i. Do not provide the transponder with a GPS Time Tag signal
via the GPS Time Tag inputs (P2-37 high, P2-38 low).
j. Verify that the transponder properly transmits an Odd-Second
DF=17 Extended Squitter transmission that has the
exact structure f or the "ME" field indicated in Figure
1007/GRAPHIC 34-50-96-99B-025-A01.
Final Performance (Customer Acceptance) Test. Cont.
Table 1001/Table 34-50-96-99A-009-A01
34-50-96
Page 1030
May 18/06