-AFT RH attnd call: push the AFT R ATTND pushbutton switch
-
PA ALL: push PA ALL pushbutton switch
-
PA FWD: push PA FWD pushbutton switch
-
PA AFT: push PA AFT pushbutton switch
-Service Int: push the SVCE pushbutton switch
-Clear handset operation: push RESET.
**ON A/C 211-299,
(d) Cabin Handset Keyboard The handset has 12 keys arranged on a 3 x 4 matrix, 11 keys are used for:
-Emergency call: push the EMER CALL pushbutton switch
-Flight compartment call: push the CAPT pushbutton switch
-All attnd call: push the ALL ATTND pushbutton switch
-FWD attnd call: push the FWD ATTND pushbutton switch
-
AFT LH attnd call: push the AFT L ATTND pushbutton switch
-
AFT RH attnd call: push the AFT R ATTND pushbutton switch
-
PA ALL: push PA ALL pushbutton switch
-
PA FWD: push PA FWD pushbutton switch
-
PA AFT: push PA AFT pushbutton switch
-Direct PA: push PTT
-Service Int: push the SVCE pushbutton switch
-Clear handset operation: push RESET.
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
(e) Cabin Handset Interface Circuit The interface circuit decodes the keyboard matrix and generates Dual Tone Multiple Frequency (DTMF) coded dial signals. The interface normally routes the speech signal through to its output. When a key is pressed, it disconnects the speech and supplies the DTMF signals to the output.
**ON A/C 001-049, 101-105, 151-199,
J. PA Loudspeaker
(1) Description
The PA loudspeakers are used for:
-
the PA announcements,
-
the broadcast of boarding music,
-
the attendant call chimes,
-
the evacuation tone signalling.
1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-00Page A24 1201-299, 1Config-1 Aug 01/05R 1 1 1CES 1
Each loudspeaker is connected to an DEU A. Fine adjustment of volume and frequency characteristics for each loudspeaker is possible. This is done according to CAM data. All necessary BITE is contained in the DEUs A. The CIDS test facilities locate any failed loudspeaker.
**ON A/C 051-099, 201-210,
J. PA Loudspeaker
(1) Description
The PA loudspeakers are used for:
-
the PA announcements,
-
the broadcast of boarding music,
-
the broadcast of video sound,
-
the attendant call chimes,
-
the evacuation tone signalling.
Each loudspeaker is connected to an DEU A. Fine adjustment of volume
and frequency characteristics for each loudspeaker is possible. This
is done according to CAM data.
**ON A/C 211-299,
J. PA Loudspeaker
(1) Description
The PA loudspeakers are used for:
-
the PA announcements,
-
the broadcast of boarding music,
-
the broadcast of video sound,
-
the attendant call chimes,
-
the evacuation tone signalling.
Each loudspeaker is connected to an DEU A. Fine adjustment of volume
and frequency characteristics for each loudspeaker is possible. This
is done according to CAM data.
1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-00Page A25 1201-299, 1Config-1 Aug 01/05R 1 1 1CES 1
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
7. Operation/Control and Indicating________________________________
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