TM 43-6625-916-12
RADAR TEST SET
0002 00
EQUIPMENT DESCRIPTION AND DATA - Continued
SIF MODES (Mode 1, Mode 2, Mode3/A, Mode C)
The following measurements are performed on interrogation pulses P1 and P3:
Pulse Frequency1,3
1029.70
MHz MIN
1030.30 MHz MAX
Pulse Width1
0.65
uS MIN
0.95 uS MAX
Pulse Spacing1,4
nominal -0.10
uS MIN (Mode 1)
nominal +0.15 uS MAX
nominal -0.15
uS MIN (Mode 2, 3/A, C) nominal +0.15 uS MAX
If the interrogator was tested by directly coupling to the antenna cable the following is evaluated.
Pulse Power1,3,5
30 dBm MIN
82 dBm MAX
If the interrogator was tested by a radiated over-the-air measurement, the following is evaluated.
Pulse Power1,3
30 dBm MIN
82 dBm MAX
If the interrogator was tested by over-the-air, received power is measured by the TS-4530/UPM and corrected
for distance path loss (56.4 dB at the 50-foot distance).
Mode 4
The following measurements are performed on P1 and P4 of the received UUT interrogation.
Pulse Frequency1,3
1029.70 MHz MIN
1030.30 MHz MAX
Pulse Width1
0.35 uS MIN
0.65 uS MAX
Pulse Spacing1,4
nominal -0.15 uS MIN
nominal +0.15 uS MAX
Width and position data of all pulses in the interrogation are checked for validity (+/-0.15 uS tolerance from
nominal). However, the user has access to measurement data for P1 and P4 only.
If the interrogator was tested by directly coupling to the antenna cable the following is evaluated.
Pulse Power1,3,5
30 dBm MIN
82 dBm MAX
If the interrogator was tested by a radiated over-the-air measurement, the following is evaluated.
Pulse Power1,3
30 dBm MIN
82 dBm MAX
If the interrogator was tested over-the-air, received power is measured by the TS-4530/UPM and corrected for
the distance path loss.
Mode S
The following measurements are performed on P1 and P6 of the received UUT interrogator.
Pulse Frequency1,3
1029.70
MHz MIN
1030.30
MHz MAX
Pulse Width1
0.65 uS
MIN (P1)
0.95
uS MAX
29.95 uS
MIN (P6 Long)
30.55
uS MAX
15.95 uS
MIN (P6 Short)
16.55
uS MAX
Pulse Spacing1,4
nominal -0.05
uS MIN
nominal +0.05
uS MAX
Width and position data of P2 is also checked for validity (+/-0.15 uS tolerance from nominal). However, the
user has access to measurement data for P1 and P6 only.
0002 00-15
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