playback of the last RX. If it is received while a playback is active the playback pointer moves
to the message before that and so forth until the last stored message. If no message is
available for a request playback terminates (Playback also terminates at any time if a new RX
is received).
Sends acknowledge when message received OK
11
PTT
00
Bit 0 = Pilot PTT. 1=active, 0=not active
Bit 1 = PAX PTT. 1-active, 0=not active
This message must be sent every 100 mS to keep a PTT active. It will timeout and cancel any
active PTT after 300mS if no further PTT command is received.
When the PTT is to be released it is recommended that at least one message is sent with the
corresponding PTT bit set to zero so the TX is released immediately.
There is no need to send this message when no PTT is active.
This command does not reply with an acknowledge message !!!
18
Flip active and standby frequencies
00
Don't care (recommend to set to zero)
Sends acknowledge when message received OK
20
Setup menu control
nn
0: Setup de-activate (power on state)
1: Setup activate
2: Menu up (previous item) – wraps to end of menu.
3: Menu down (next item) = wraps to start of menu.
4: Change value of current menu item UP, ON, YES or flip state
5: Change value of current menu item DOWN, OFF, NO or flip state
6: Technical setup de-activate (power on state)
7: Technical setup activate
If the V16 is placed in setup menu mode it will automatically cancel this mode if no activity
within 60 seconds related to the Menu.
If the menu is active the Setup menu message will be sent every 200mS interspaced with the
normal status message. The Setup message contains information on the nature of the current
setup item and an ascii text message suitable for display on a control head or EFIS. The
control head does not require any specific knowledge of the attached device. It simply
activates the menu and displays the text to the user. The user navigates the menu and
changes values using the above commands.
Technical setup should never be entered without detailed knowledge and required special
equipment. The Technical menu includes a number of calibration items that should never be
changed during the life of the V16 unless certain repairs have been carried out. DO NOT
CHANGE ANY OF THESE ITEMS unless you have the required equipment and knowledge of
