The round reception pushbutton switches serve to select and adjust the audio levels.
**ON A/C 106-149, 211-299,
The round reception pushbutton switches serve to select and adjust the audio levels. The round reception pushbutton switch associated with HF2 is not used.
**ON A/C ALL
They are of the push-push type: when you push a pushbutton switch (initial position), it moves in then fully out to a level above that of the unselected pushbutton switches. A white skirt on the reception pushbutton switch appears and the selected receiver is connected. Rotate this pushbutton switch to adjust the reception level. You can select several reception pushbutton switches simultaneously. When you push the reception pushbutton switch again, it engages in its initial position: the receiver is disconnected.
(c) Call indication
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-220,
(Ref. Fig. 009)
R **ON A/C 106-149, 221-299, 301-399, 401-499,
(Ref. Fig. 009A)
**ON A/C ALL
(C, D and E)
During a ground crew or Cabin Attendant or SELCAL call, a legend
flashes amber under the green bars of the transmission pushbutton
switch concerned.
1EFF : ALL 1 23-51-00Page 28 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210, 301-399, 401-499,
This occurs whether the transmission pushbutton switch is selected or not:
-CALL: VHF1-VHF2-VHF3-HF1-HF2 pushbutton switches (SELCAL call)
**ON A/C 106-149, 211-299,
This occurs whether the transmission pushbutton switch is selected or not:
-CALL: VHF1-VHF2-VHF3-HF1 pushbutton switches (SELCAL call)
**ON A/C ALL
-MECH : INT pushbutton switch (ground crew call)
-ATT : CAB pushbutton switch (Cabin Attendant call) To switch off the amber legends, push the RESET pushbutton switch.
NOTE : The MECH and ATT legends which flash amber go off
____ automatically. This occurs after 60 seconds of operation if the call is not cancelled by the RESET pushbutton switch (This automatic function can be inhibited by the AMU pin-program (Ref. para. Operation - Pin Program).
(d) VOICE selection
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-220,
(Ref. Fig. 009)
R **ON A/C 106-149, 221-299, 301-399, 401-499,
(Ref. Fig. 009A)
**ON A/C ALL
(F)
When you push the VOICE pushbutton switch, the ON legend comes on
green. This indicates that a filter has been connected into the
audio circuits of the ADF and the VOR navigation systems.
1EFF : ALL 1 23-51-00Page 29 1 1 Aug 01/05 1 1 1CES 1 When you push this pushbutton switch again, the green ON legend goes off: the filter is no longer in service.
(e)
INT/RAD switch This switch is used for the transmission function when the boomset or the oxygen mask is in service: it acts as the PTT switch for this equipment which unlike the hand microphone is not equipped with this type of control.
(f)
Lighting The ACP comprises 2 lighting circuits:
-
The selection accepted (green) and the call (amber) indications can be adjusted by the DIM/BRIGHT circuit (6 V/4.5 VDC) (Ref. ATA 33-14-00-LP).
-
The integral lighting is adjusted by the pedestal integral lighting potentiometer (5 V-0 VAC) (Ref. ATA 33-13-00-LF).
1_ Middle position
The radio transceiver receives no switchover information. It
remains in reception function.
2_ RAD position
The radio transceiver receives (via the AMU) a switchover
information.
It switches from reception to transmission function.
3_ INT position
This position enables direct use of the flight interphone.
There are two utilization procedures for the flight
interphone.
- Normal mode The user pushes the INT transmission pushbutton
switch and uses it like an ordinary radio channel (he places
and holds the INT/RAD switch in RAD position).
- Direct mode If user has selected a radio channel (VHF1, VHF2
etc.), he can, if he so wishes, use the flight interphone.
To do this he does not have to release the transmission
pushbutton switch. He shall simply place the INT/RAD switch
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