SF7 Erasure of stored frequencies
COdE Entering a password to interlock the equipment
configuration
SF9 Dynamic mike input sensitivity
SF10 Inhibiting the transmit mode for one or more memory
channel
FS
q
L no function
SF 12 Speaker muting switch ON/OFF
—.— Indication the software version and change status
NOTE
The standard values for the equipment configuration S
q
L, SIdE, AU, IC
and SF9 are stored in the EE-PROM. If reversion to the standard
values is required, the portable VHF transceiver must be switched off
and switched on again by simultaneously pressing the STO (3) and
MDE (4) keys.
Page 20 Issue 10/95
Operating Instructions
r Audio auxiliary input
A second and third radio unit (navigational receiver) can be monitored
simultaneously via the Audio auxiliary input. During transmission the
auxiliary input is switched off from the Audio end amplifier. If
necessary, the input sensitivity can be matched to the noise level of the
aircraft (for setting refer to service mode).
r Jamming of transmit button
The VHF transceiver is fitted with a protective circuit to protect against
jamming of the transmit button or a short circuit on the key supply line.
For continuous transmissions exceeding two minutes the protective
circuit automatically switches from transmission to reception. This
avoids the switched channel being blocked.
It is possible to activate the transmitter again immediately by
re-pressing the transmit button. In the event of a fault, this is only
possible after the short circuit has been cleared or the transmit button
released.
In Stock to be able to continue transmitting even with the transmit
button jammed, the VHF Transceiver must be switched off and then
back on again. After that the VHF transceiver then continues to operate
in the transmit mode for a further two minutes.
Issue 10/95 Page 13
Becker AR 3209
CAUTION
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