Specifications

USER’S HANDBOOK
2
Test specification and interpreting the results
a
Test specification
The performances must meet the specifications described in the following paragraphs.
Two types of measurements are made:
– measurements on the UHF channel (406.025 or 406.028 MHz),
– measurements on the VHF/UHF channels (121.5 and 243 MHz).
The display resolution is the last decimal displayed.
b
406.025 or 406.028 MHz channel
- Power measurement (P
UHF
)
 ELT specification : +37 dBm ± 2 dBm.
 The coaxial input is protected up to +43 dBm in pulsed mode.
- Carrier frequency measurement (DFo)
 ELT specification : 406.025 MHz ± 2 kHz or 406.028 MHz ± 1 kHz
- Transmissions recurrence time measurement (Tr)
 ELT specification : 50 s ± 5% (± 2.5 s).
- Pure carrier pulse measurement (Cpp)
 ELT specification : 160 ms ± 1% (± 1.6 ms).
- Transmission time measurement (CE)
 ELT specification : Short message 440 ms ± 1% (± 4.4 ms),
Long message 520 ms ± 1% (± 5.2 ms).
- Digital pulse rate measurement (H400)
 ELT specification : 400 Hz ± 1% (± 4 Hz).
Page 64
Mar
. 08/12