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3300 ATC Transponder Test Set
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The 3300 is designed to test ATC transponders on the bench as well as
when they are installed in the aircraft. The 3300 contains an interrogation
transmitter. The intended range of the interrogation is less than 100'.
When used for Ramp testing the interrogation signal is comprised of
pulse groups (PG) transmitted at a PRF of 235 PG/S.
A pulse group consists of 3 or 4 pulses with a nominal width of 0.80 mS.
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| Specifications |
| Interrogation Specs |
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| Function |
Range |
Resolution |
Tolerance |
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| PRF |
235 to 1700 I/S |
100 I/S |
±2% |
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| P1 Level |
-10 to -80 dBm |
1 dB |
±1.5 dB |
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| P2 Level (ref P1) |
+3 to -12 dB |
1 dB |
±.5 dB |
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| P3 Level (ref P1) |
+3 to -12 dB |
1 dB |
±.5 dB |
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| P2 Position |
-.35 to +.35 |
.05 mSec |
±.03 dB |
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| P3 Position |
-.7 to + .7 mSec |
.1 mSec |
±.03 dB |
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| Pulse Width |
.3 to 1.7 mSec |
.1 mSec |
±.03 dB |
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| Frequency |
1024 to 1038 MHz |
1 MHz |
±1 MHz |
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| P4 Position (ref P1) |
2 to 17 mSec |
1.0 mSec |
±.03 mSec |
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| P4 Level |
-10 to -80 dBm |
1 dB |
±1.5 dB |
| Reply Specs |
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| Frequency |
-10 to +10 MHz |
.1 MHz |
±.2 MHz |
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| Power |
0 to 54 dBm |
.5 dB |
1 dB* |
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| % Reply |
0 to 100 |
1 |
±2% |
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| Delay (P3 to F1) |
2 to 5 mSec |
.1 mSec |
±.1 mSec |
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| 1D |
0 to 4096 |
1 |
N/A |
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| ALT |
-1.0 to 50,000' |
100' |
N/A |
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| Pulse Width |
.3 to .7 mSec |
.02 mSec |
.04 mSec |
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