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1.5. Comparison between CRT QUANTUM and CRT XL/XL2
The table below lists the minor differences between CRT Quantum and CRT XL/XL2 :
Item
Number of IF Inputs
IF Input switch
IF Input level
Auxiliary inputs
Number of
Demodulators
PM/FM demodulation
PLL type
PLL Bandwidth
BPSK, QPSK, OQPSK
AQPSK, GMSK
8PSK
Sine Subcarrier
Square Subcarrier
Low BW Telemetry
Low BW Telemetry
extended (SPS>=e5r25)
High BW Subcarrier
Telemetry
High BW PCM
Telemetry
Viterbi decoder rate
Tcm decoder rate
Reed-Solomon
Turbo decoder rate
LDPC decoder rate
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
CRT XL2
Downlink processing
2
Nominal/Alternate
Nominal/Alternate
-5 to -95 dBm
-5 to -95 dBm
2
3
Yes
nd
2
order
10 Hz to 3 kHz
10 Hz to 3 kHz
Yes
No
No
Yes
No
40 Hz to 128 kHz
40 Hz to 128 kHz
10 bps to 25 kbps
7 bps to 25 kbps
No
5 kHz to 2 MHz
5 kHz to 2 MHz
100 bps to 600
100 bps to 600
kbps
100 bps to 20
100 bps to 40
Mbps
½
N/A
223/255
No
No
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It cannot be duplicated or distributed without expressed written consent.
CRT XL
CRT XL
Quantum
3
Nominal/Alternate
-15 to -105 dBm
2
5
Yes
Yes
nd
nd
2
order
2
10 Hz to 3 kHz
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
40 Hz to 128 kHz
7 bps to 25 kbps
No
40 Hz to 512 kHz
7 bps to 64 kbps
5 kHz to 2 MHz
100 bps to 600
kbps
kbps
100 bps to 40
Mbps
Mbps
½
½, 1/3, 2/3, 3/4,
5/6, 7/8
N/A
in HBW only :
2.00/3, 2.25/3,
2.50/3, 2.75/3.
223/255
223/255
239/255
½
1
2
No
/
/
2,
Ref.
DTU 100042
Is.Rev.
5.17
Date:
Dec. 03, 2021Sept.
30, 2021
CRT eXplorer
3
3
Nominal/Alternate
-15 to -125 dBm
2
2
5
5
Yes
nd
rd
order
2
& 3
0.1 Hz to 3 kHz
Yes
Yes
Yes
Yes
Yes
40 Hz to 128 kHz
7 bps to 25 kbps
40 Hz to 512 kHz
7 bps to 64 kbps
5 kHz to 2 MHz
100 bps to 600
kbps
100 bps to 40
Mbps
½, 1/3, 2/3, 3/4,
5/6, 7/8
in HBW only :
2.00/3, 2.25/3,
2.50/3, 2.75/3.
223/255
239/255
½, ⅓, ¼,
½
4
7
1
2
4
/
/
/
/
/
3,
5,
8
2,
3,
order
1
/
6
7
/
5,
8
Page 16
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