Beacon 978 Installation Manual
14
SIGNAL
LEVEL --
6.10 CALIBRATE SNIFFER
(“CALIB SNIFFER”)
If SQUAWK SYNCHRONIZATION (section 6.9) is set
to “SNIFFER”, you can calibrate
the signal level of the receiver portion to read your transponder code. The signal level varies
from 1 to 8, 1 being the lowest amplification:
The calibration procedure is an autonomous function where the transponder sends a specific
squawk code, the sniffer looks for this squawk code at different signal level settings. Manual
adjustments of the signal level are not allowed. In order to calibrate the Sniffer, you must have:
Corresponding transponder type selected (Mode C or Mode S)(section 6.8)
Squawk synchronization set to “Sniffer” (section 6.9)
Either be flying outside controlled airspace (with not active flight plan), or on the ground
1.
Squawk “1200” on your transponder and activate it (no altitude)
2.
Select “CALIB SNIFFER” under
Settings Menu
3.
Rotate the button to go to option “CALIB NOW”, PUSH and RELEASE button to select
4. Wait for calibration procedure to end. This process may take up to 30 seconds.
5.
Finally, verify the resulted Sniffer Signal Level is NOT “- -“on your screen. If the sniffer
was able to capture a 1200-squawk code correctly, the signal level will vary from 1 to 8.
6. PUSH and RELEASE to exit the calibration menu.
Sniffer Signal Level
1
Minimum amplification needed (transponder
signal output is strong)
2
3
4
Default amplification
5
6
7
8
Maximum amplification needed (sniffer may
have difficulty capturing transponder signal)
--
Calibration procedure could not verify a
transponder squawk code of “1200”, or sniffer
hasn’t been calibrated yet. See calibrating
instructions below.
PROGRESS
█▐▌█
SIGNAL
LEVEL 02
