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Table 4
:
MAXIMUM T E S T LIST - ELECTRICAL PARAMETERS
All XPDRs
Transponder's transmission
characteristics (1090 MHz
Mode S XPDRs only
Mode
A/C
procedure
Intermode
Mode
S
procedure
1 - reply frequency
X
X
X
P71
2 - mean output power
X
P51
P52
X
X
P72
3 - pulse amplitude variation during a reply
√
XX
XX
4 - pulse positions : max & mean offset
X
√
√
5 - pulse width (mean of all pulses)
√
√
6 - Mode A : code validity
√
7 - Mode C : altitude
√
8 - delay time , delay time jitter
XX
9 - delay time difference Mode A vs. Mode C
XX
√
see P11
see P10
P53
√
√
P73
10 - delay time , delay time jitter
√
P54
11 - squitter periodicity
√
P55
-
12- reply pulse rise & decay times
√
P56
-
√
P73
13 - reply rate vs. PRF
X
P57
14 - mixed reply rate capabilty Mode A + S
-
XX
P75
15 - diversity isolation
-
X
P76
see P6
Receiver capabilities (1030 MHz )
21 - reveiver dynamic range (MTL) all Modes
X
P58
X
X
P77
22 - dead time
√
P59
√
√
P78
23 - suppression time
√
P60
-
√
P79
24 - receiving frequency acceptance
√
P61
-
√
P80
25 - sidelobe suppression vs. P1 / P2 level ratio
( in Mode S : " "
vs. P5 / P6 level ratio
X
P62
26 - sidelobe suppression vs. P1 >> P2 spacing
√
P63
27 - sidelobe suppression vs. P2 pulse width
√
P64
28 - interference (additional P1* -P1-P3)
√
29 - Mode A&C acceptance vs. P1>> P3 spacing
30 - Mode A&C acceptance vs. P1 & P3 spacing
-
√
P81
√
-
P82
P65
-
√
P83
X
P66
√
-
P84
√
P67
31 - intermode A&C acceptance vs. P4 width
X
-
P85
32 - intermode A&C acceptance vs. P3 >> P4 spacing
√
-
P86
33 - Mode S acceptance vs. P2 >> SyPhRev spacing
-
X
P87
Legend
- not applicable
applicable
X id, mandatory and/or recommende by STFTV + test similar in Mode S
XX id, and/or important for ATC >> to be executed also by the ramp test set
In BOLD OBLIQUE : procedures for the ramp test set (see 2.5.4)
Test numberingin the first column (1 to 33) : see note bottom of Table 2.
Transponders Test Benches Requirements
13