Safran CORTEX CRT Quantum User Manual page 94

Note 3: Binary-coded identity of the transmitted tones (0 = 0 V, 1 = 5 V):

No
tone
J26 0
J27 0
J28 0

No
tone
J26 0
J27 0
J28 0

Major Tone
J26 0
J27 0
J28 1

Start of sequence ...
Idle state
J26 0
J27 0
J28 0
(1): 3-bit counter (J1 = LSB and J2 = MSB; 0 = 0 V, 1 = 5 V). Set to 001B when the RAU starts transmitting the
first code. The counter is then incremented by 1, for each transmitted code and, at the end of the sequence,
when the major tone is transmitted alone for accurate phase measurement. Example: if the code length is set to
18, the number of transmitted codes is 9. The counter will take the following values (in decimal): 0 (major tone
set time), 1, 2, ..., 6, 7, 0, 1 (end of code transmission), 2 (phase measurement on major tone).
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
ESA and ESA-like tone standards:
Major Minor
1
0 0
0 1
1 0
USB tone standard:
Majo Mino Mino
r r 1 r 2
0 0 0
0 1 1
1 0 1
INMARSAT and LMCO tone standards:
Minor 1
0
1
0
ESA code standard:
Major tone
(set time)
0
0
0
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It cannot be duplicated or distributed without expressed written consent.
Minor Minor Minor
2 3 4
0 1 1
1 0 0
1 0 1
Mino Mino Mino
r 3 r 4 r 5
1 1 1
0 0 1
0 1 0
Minor 2
0
1
1
Major tone + code
(1)
(1)
(1)
Safran Data Systems
.
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
Minor Minor
5 6
1 1
1 1
0 1
Mino Mino Mino
r 6 r 7 r 8
1 0 0
1 0 1
1 1 0
Minor 3
1
0
0
... end of sequence
Major tone
(measurement)
(1)
(1)
(1)
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