Safran CORTEX CRT Quantum - 5.2. Hardware Investigation & Repair

COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
© Safran Data Systems
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
Page 177
3.6.9.2. Number of Tones and Transmission Rank
The number of minor tones is programmable from 1 to 6 for the ESA-like standard and 1 to 8 for the USB
standard. The minor tones transmission rank is also fully programmable.
3.6.9.3. Real and Virtual Minor Tone Frequency
The virtual minor tone frequency is (in kHz): 





The real minor tone frequency is (in kHz): 



 

3.6.9.4. Ambiguity Distance
3.6.9.4.1. Integer Ratio Between Q Factors
If the ratio between two adjacent minor tone « Q » factors is an integer value, the one-way ambiguity distance is
half the wavelength of the lowest virtual minor tone.
Example 1: ESA-like mode with all real tones in the range 22-28 kHz:
TONE RANK
(1 = FIRST)
Q
P
VIRTUAL TONE
(HZ)
REAL TONE (HZ)
7
18
1
27 777.78
27 777.78
6
90
4
5 555.56
22 222.22
5
450
21
1 111.11
23 333.33
4
2 250
101
222.22
22 444.44
3
11 250
501
44.44
22 266.67
2
56 250
2 501
8.89
22 231.11
1
281 250
12 501
1.78
22 224.00
The one-way ambiguity distance is approximately:



Example 2: USB mode with a 500 kHz major tone and a very low minor tone frequency (0.625 Hz) for an
extended ambiguity distance:
TONE RANK
(1 = FIRST)
Q
P
VIRTUAL TONE
(HZ)
REAL TONE (HZ)
9
5
5
500 000
500 000
8
5
1
100 000
100 000
7
25
1
20 000
20 000
6
125
1
4 000
4 000
5
625
6
800
4 800
4
3 125
26
160
4 160
3
12 500
101
40
4 040
2
50 000
401
10
4 010