SAR-DF 517
Page 3-6
DV 77513.03 Issue 4 09/2006
5
>
Offset
< displays the offset value (adjusted in the edit-menu).
6
>
Mounting
< -indicator of the mounted bearing antenna. Shows the mounting arrangement of the
antenna (can be adjusted in the edit-menu) as verification. ( = TOP mounted,
=BOTTOM
mounted)
7
>
LS: ---:---
< (last signal) internal timer, indicating the time span of the last received signal. (Display
in min:sec).
3.3.3. Scanning mode when bearing Cospas/Sarsat signals
The Cospas/Sarsat signal on 406,025 MHz is transmitted only every 50 secs. (pulse length ca.
400ms). It will be received (because of transmitter power) earlier than the 121.500 MHz resp. 243.000
MHz continuous signal. However, a transmitter in the near range may obtaind a bearing faster with a
continuous signal. For this purpose, in the scanning mode the 406 MHz pulse and, at the same time,
two other emergency frequencies can be for a continuous scanned signal. This function can be
activated by switching in the time span (5 to 45 secs.) between two Cospas/Sarsat pulses to other
emergency frequencies. If a signal is received, the frequency will be held, otherwise frequency will be
changed after 45 secs. to the Cospas/Sarsat frequency until the next pulse. The active frequency is
displayed bottom right.
The scanning mode is possible with the frequencies: 406,025 MHz
⇔
(121,500 MHz and 243,000
MHz) or the respective training frequencies.
Timer > LS: --:-- always displays time span
since last received CP-Sarsat pulse signal
(406,025 MHz)
Frequency display in scanning mode:
Scanning mode, switched to second scan-frequency
(active frequency 243,000 MHz)