User's Manual

ROCKWELL COLLINS
COMPONENT MAINTENANCE MANUAL with IPL
TDR-94, PART NO 622-9352
STEP PROCEDURE DESIRED RES ULTS
b. Ensure that both Configuration Select “0” (P1-28) and
Configuration Select “1” (P1-17) are NOT connected to ground.
c. Provide the transponder unit with a GPS Time Tag signal via
the GPS Time Tag inputs (P2-37 High, P2-38 Low). The GPS
time tag signal sha ll be a differential (0 –5 vdc) 1 millisecond
pulse, at a repetition rate of 1 per second.
d. Via the GPS/GNSS Input Data Bus, provide the transponder
with the appropriate labels and data indicated in Fig
ure
1020/GRAPHIC 34-50-96-99B-091-A01. Each data parameter
shall be updated at least once per second.
e. Ver ify that the transponder properly transmits an
”Even-Second” DF=17 Extended Squitter transmi
ssion having
the exact structure fo r the ”ME” field indicated in Figure
1020/GRAPHIC 34-50-96-99B-091-A01.
f. Verify that the transponder properly transmits the Surface
Po sition Message at random inter vals t
hat are uniformly
distributed over the range from 0.4 to 0.6 seconds (i.e., 0.5
+/-0.1 seconds).
g. Ver ify that the transponder proper ly transmits the Surface
Po sition from the top antenna po
rt only for the TDR-94D and
from the bottom antenna only for the TDR-94.
h. Ve r ify that the transponder does not transmit DF=11
Acquisition Squitters while transmitting the Surface Position
Squitter Messages as spe
cified steps e, f, and g.
i. Do NOT provide the tra
nsponder unit with a GPS Time Tag
signal via the G PS Time Tag inputs (P2-37 High, P2-38 Low).
j. Ver ify that the transponder properly transmits an
”Odd-Second” DF=17 Extended Squitter transmission having
the exact structure
for the ”ME” field Figure 1020/GRAPHIC
34-50-96-99B-091-A01.
9.5D GPS Bus / Surface Position Extended Squitter / Time Tag
Verification (-308, -309 ONLY)
a. Connect either Air/Ground Discrete #1 (P2-53) or Air/Ground
Discrete #2 (P
1-27) to ground (i.e., establish the surface state).
b. Ensure th
at both Configuration Select “0” (P1-28) and
Configuration Select “1” (P1-17) are NOT connected to ground.
Final Performance (Customer Acceptance) Test. Cont.
Table 1001/Table 34-50-96-99A-009-A01
34-50-96
Page 1032
Jun 20/08