TB 9-6625-2337-35
Test instrument
parameters
Performance specifications
IFF VIDEO OUT:
FIRST REPLY:
Pulse Width:
0.45 0.03 s
Range Delay:
For zero range delay, F1 pulse
position is 3.0 0.5 s after P3 pulse of
challenge. F1 pulse can be delayed from 0
to 4095 s after this position. Accuracy
is 0.5 s up to 1023 s and 0.8 s from
1024 to 4995 s.
SIF Code Spacing:
F1 (bracket 1) 0 s
C1 1.45 0.02 s
A1 2.90 0.02 s
C2 4.35 0.02 s
A2 5.80 0.02 s
C4 7.25 0.02 s
A4 8.70 0.02 s
B1 11.60 0.02 s
D1 13.05 0.02 s
B2 14.50 0.02 s
D2 15.95 0.02 s
B4 17.40 0.02 s
D4 18.85 0.02 s
F2 (bracket 1) 20.30 0.02 s
SIF Reply with X Pulse: An X pulse spaced 10.15
0.02 s after the F1
pulse.
SIF Emergency Replies:
Standard:
Each mode code is followed by
three sets of empty bracket
pulses (F1, F2) with F1 and F2
spaced 20.30 s apart and each
F1 pulse spaced 4.35 1.0 s
after its proceeding F2 pulse.
Variable:
Selectable to vary spacing between all
emergency code empty brackets F1 pulses
and their proceeding F2 pulses by 1.00 s
0.05 s.
SID Identification of Position:
For Mode 1 add second pulse train
identical to first spaced 24.65 0.1 s after
F1 pulse of first pulse train.
For Modes 2,3/A and C add single F1 pulse (SIF pulse) at this
spacing.
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