LAA 1124 NOTES    LINAIRE ENGINEERING INC.     MARCH 2002

Note:  L-240 panel must have mod #920323 installed  to use this harness and test set-up.
The is a list of inputs and outputs with the switch and/or tip jack to access them.
PILOT
	PHONE 
		Select Left or Right channel on cable box.
		Select L-240 OUTPUT SWITCH > PHONE
		Audio available at L-240 PHONE JACK and AUDIO OUTPUT JACKS
		Select L-240 METER SWITCH > AUDIO RMS to measure
		Select L-240 AUDIO/TEST > AUDIO to hear in panel speaker
	MICROPHONE
		Select CABLE BOX COPILOT/PILOT > PILOT
		AUDIO
			Select L-240 MIKE/GEN > MIKE
			Apply audio to L-240 Audio Input Jacks 2
			Or connect microphone to L-240 MIKE JACK
			monitor mike DC and AC voltage at L-240 MIKE VOLTAGE JACKS
		COM 1 MIKE AUDIO OUT
			Select L-240 AUDIO INPUT SELECT > TRANS 1
			monitor at L-240 AUDIO JACK 4
		COM 2 MIKE AUDIO OUT
			Select L-240 AUDIO INPUT SELECT > TRANS 2
			monitor at L-240 AUDIO JACK 4
		COM 3 MIKE AUDIO OUT
			Select L-240 AUDIO INPUT SELECT > TRANS 3
			monitor at L-240 AUDIO JACK 4
		KEY
			Select L-240 KEY/OFF > KEY
			Or if microphone connected you can use it’s key.
			Select L-240 FUNCTION 1 for COM 1 Key line Lamp ON 
			Select L-240 FUNCTION 2 for COM 2 Key line Lamp ON
			Select L-240 FUNCTION 3 for COM 3 Key line Lamp ON
COPILOT
	PHONE
		Select Left or Right channel on cable box
		Select L-240 OUTPUT SWITCH > XCON
		Audio available at L-240 AUDIO OUTPUT JACKS  - place load across jacks
		Select L-240 METER SWITCH > AUDIO RMS to measure
		Select L-240 AUDIO/TEST > AUDIO to hear in panel speaker
	MICROPHONE
		Select CABLE BOX COPILOT/PILOT > COPILOT
		AUDIO
			Select L-240 MIKE/GEN > MIKE
			Apply audio to L-240 Audio Input Jacks 2
			Or connect microphone to L-240 MIKE JACK
			monitor mike DC and AC voltage at L-240 MIKE VOLTAGE JACKS
			COM MIKE AUDIO OUT  Same as above
		KEY
			Select L-240 KEY/OFF > KEY
			Of if mircophone connected you can use it’s key
			Select L-240 FUNCTION 1 for COM 1 Key line Lamp ON
			Select L-240 FUNCTION 2 for COM 2 Key line Lamp ON
			Select L-240 FUNCTION 3 for COM 3 Key line Lamp ON
CREW
	PHONE
		Select Left or Right channel on cable box
		Select L-240 OUTPUT SWITCH > INT PH
		Audio available at L-240 AUDIO OUTPUT JACKS  - place load across jacks
		Select L-240 METER SWITCH > AUDIO RMS to measure
		Select L-240 AUDIO/TEST > AUDIO to hear in panel speaker
	MIKE
		AUDIO
			Select L-240 AUDIO INPUT SELECT > REC 1 [ pass. 1 mike audio ]
			Select L-240 AUDIO/NORM > AUDIO
			Apply audio to AUDIO JACKS 4
			Audio available at L-240 AUDIO OUTPUT JACKS - place load across jacks
			Select L-240 METER SWITCH > AUDIO RMS to measure
			Select L-240 AUDIO/TEST > AUDIO to hear in panel speaker
			REC 2 = pass 2 mike 
			REC 3 = pass 3 mike
			REC 4 = pass 4 mike
		KEY	CABLE BOX SWITCH  HOOK COPILOT/PASS > PASS

SWITCHED AUDIO INPUTS
	ADF	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > TRANS 1
	DME	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > TRANS 2
	AUX	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > TRANS 3
	NAV 1	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > REC 1
	NAV 2	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > REC 2
	EXT MKR
		Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > REC 3
	COM 1	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > TRANS 1
	COM 2	Audio applied at L-240 AUDIO INPUT 1 JACKS	
		L-240 AUDIO INPUT SELECT > TRANS 2
UNSWITCHED AUDIO INPUTS
	ENTERTAINMENT #1	LEFT & RIGHT
		Select L-240 AUDIO/NORM > AUDIO
		Select L-240 AUDIO INPUT SELECT > REC 5
		Apply audio to AUDIO JACKS 4
	ENTERTAINMENT #2	LEFT & RIGHT
		Select L-240 AUDIO/NORM > AUDIO
		Select L-240 AUDIO INPUT SELECT > REC 6
		Apply audio to AUDIO JACKS 4
	#1	Select L-240 AUDIO/NORM > AUDIO
		Select L-240 AUDIO INPUT SELECT > REC 7
		Apply audio to AUDIO JACKS 4
	#2	Select L-240 AUDIO/NORM > AUDIO
		Select L-240 AUDIO INPUT SELECT > REC 8
		Apply audio to AUDIO JACKS 4
Note:  L-240 panel must have mod #920323 installed  to use this harness and test set-up.

L-240 Panel set-up:
	Set the following switches on the panel;
		Power ON/OFF > OFF
		KEY/OFF > OFF
		FUNCTION > position 1 
		AUDIO INPUT SELECT > position 1
		OUTPUT > position SPEAKER
		MIKE/GEN > MIKE
		AUDIO/TEST > OFF

LAA-1124 CABLE BOX set-up:
	Set the following switches on the cable box;
	14V/ 28V LAMPS to the same voltage that you apply to the panel or select the center off.
		Note:  lamp voltage comes from the unit DC power line - don’t select 14V
		when operating  the unit under test at voltages higher then 14 volts.
	Select all center off switches to center off position.
	Select PILOT/COPILOT > PILOT  [ selects mike for input ]
	Select PHONES LEFT/RIGHT > LEFT  [ selects left channel of headphone ]
	Select ENTERTAINMENT LEFT/RIGHT > LEFT  [selects left input channel ]

CHECKING PILOT MIKE AUDIO AND KEY CHECK
	L-240 MIKE/GEN > MIKE
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2  [ mike audio 250 mVrms ]
	L-240 AUDIO/TEST > AUDIO  [panel speaker is connect to audio output jacks ]
	L-240 POWER > ON
	L-240 KEY/OFF > KEY
	L-240 FUNCTION > position 1
	L-240 AUDIO INPUT SELECT > position TRANS 1  [com 1 ]
	L-240 AUDIO/NORM > AUDIO  (MOD #920323)  [ audio out jack 4 ]
	L-240 METER SWITCH > AUDIO RMS    [measures audio selected by output switch ]

KMA 28    POWER > ON   -   MIC SELECTOR TO COM 1  &  SPR BUTTON IN 
	Observe audio in L-240 panel speaker.      [ J1-8, W     speaker output ]  
	Observe Transmit lamp lights on KMA 28 [ J1-Y          pilot mike key ]
	Observe L-240 Key Lamp lights                [ J1-R           com 1 mike key line ]
	Observe L-240 audio signal at Tipjack Audio Input 4  [ J1-P     com 1 mike audio ]
L-240   OUTPUT > PHONE
	Observe audio in L-240 panel speaker. [J2-1, J1-W      left pilot phone out ]
L-240    AUDIO/TEST > OFF
	Observe audio rms on panel meter.
LAA-1124  CABLE BOX  PHONES LEFT/RIGHT > RIGHT
L-240    AUDIO/TEST > AUDIO
	Observe audio in L-240 panel speaker [J1-3,W          right pilot phone out ]
L-240    AUDIO/TEST > OFF
	Observe audio rms on panel meter.




LAA-1124  CABLE BOX  PHONES LEFT/RIGHT > LEFT
	     CABLE BOX   SWAP/PA MODE > SWAP and release
	Observe audio in L-240 panel speaker.      [ J1-8, W      speaker output ]
	Observe Transmit lamp lights on KMA 28 [ J1-Y           pilot mike key ]

L-240	AUDIO/TEST > AUDIO
	OUTPUT > SPEAKER
	FUNCTION > position 2
	Observe L-240 Key Lamp lights                 [ J1-V          com 2 mike key line ]
L-240    AUDIO INPUT SELECT > position TRANS 2
	Observe L-240 audio signal at Tipjack Audio Input 4   [ J1-H      com 2 mike audio ]
LAA-1124 CABLE BOX  SWAP/PA MODE > SWAP  and release 

KMA 28  MIC SELECTOR TO COM 2  &  SPR BUTTON IN 
	Observe audio in L-240 panel speaker.  [ J1-8, W           speaker output ]
	Observe Transmit lamp lights on KMA 28 [ J1-Y            pilot mike key ]
	Observe L-240 Key Lamp lights                 [ J1-V            com 2 mike key line ]
	Observe L-240 audio signal at Tipjack Audio Input 4   [ J1-H         com 2 mike audio ]

L-240    FUNCTION > position 1
	AUDIO INPUT SELECT > position TRANS 1
KMA 28    MIC SELECTOR TO COM 1/2     [ note: pilot on com1  & copilot on com 2 ]
	Observe audio in L-240 panel speaker.      [ J1-8, W     speaker output ]
	Observe Transmit lamp lights on KMA 28 [ J1-Y          pilot mike key ]
	Observe L-240 Key Lamp lights                [ J1-R            com 1 mike key ]
	Observe L-240 audio signal at Tipjack Audio Input 4  [ J1-P      com 1 mike audio ]

L-240    FUNCTION > position 2
	AUDIO INPUT SELECT > position TRANS 2
KMA 28   MIC SELECTOR TO COM 2/1         [note: pilot on com 2 & copilot on com 1 ]
	Observe audio in L-240 panel speaker.  [ J1-8, W          speaker output ]
	Observe Transmit lamp lights on KMA 28 [ J1-Y           pilot mike key ]
	Observe L-240 Key Lamp lights                 [ J1-V            com 2 mike key line ]
	Observe L-240 audio signal at Tipjack Audio Input 4   [ J1-H          com 2 mike audio ]


L-240     FUNCTION > position 3
L-240    AUDIO INPUT SELECT > position TRANS 3

KMA 28  MIC SELECTOR TO COM 3  &  SPR BUTTON IN 
	Observe audio in L-240 panel speaker.  [ J1-8, W              speaker output ]
	Observe Transmit lamp lights on KMA 28 [ J1-Y               pilot mike key ]
	Observe L-240 Key Lamp lights                 [ J1-15         com 3 mike key line ]
	Observe L-240 audio signal at Tipjack Audio Input 4   [ J1-K         com 3 mike audio ]


CHECKING COPILOT MIKE AUDIO AND KEY
	L-240 MIKE/GEN > MIKE
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2  [ mike audio 250 mVrms ]
	L-240 AUDIO/TEST > AUDIO      [panel speaker is connect to audio output jacks ]
	L-240 POWER > ON
	L-240 KEY/OFF > KEY
	L-240 FUNCTION > position 1
	L-240 AUDIO INPUT SELECT > position TRANS 1  [ com 1 ]
	L-240 AUDIO/NORM > AUDIO  (MOD #920323)   [ audio out jack 4 ]
	L-240 OUTPUT > position SPEAKER
	L-240 METER SWITCH > AUDIO RMS  [measures audio selected by output switch ]
LAA-1124 CABLE BOX
	Select PILOT/COPILOT > COPILOT   [ selects mike for input ]

KMA 28    POWER > ON   -   MIC SELECTOR TO COM 1  &  SPR BUTTON IN 
	Observe audio in L-240 panel speaker.      [ J2-8, J1-W     speaker output ]
	Observe Transmit lamp lights on KMA 28 [ J2-9                copilot mike key ]
	Observe L-240 Key Lamp lights                [ J1-R                 com 1 mike key ]
	Observe L-240 audio signal at Tipjack Audio Input 4  [ J1-P     com 1 mike audio ]
L-240   OUTPUT > PHONE
	Observe audio in L-240 panel speaker. [J2-1, J1-W      left copilot phone out ]
L-240    AUDIO/TEST > OFF
	Observe audio rms on panel meter.
LAA-1124  CABLE BOX  PHONES LEFT/RIGHT > RIGHT
L-240    AUDIO/TEST > AUDIO
	Observe audio in L-240 panel speaker [J1-3,W          right copilot phone out ]
L-240    AUDIO/TEST > OFF
	Observe audio rms on panel meter.
	
L-240    AUDIO/TEST > AUDIO
	OUTPUT > SPEAKER
	FUNCTION > position 2
	AUDIO INPUT SELECT > position TRANS 2
KMA 28    MIC SELECTOR TO COM 1/2
	Observe audio in L-240 panel speaker.      [ J2-8, J1-W   speaker]
	Observe Transmit lamp lights on KMA 28 [ J2-9   copilot mike key ]
	Observe L-240 Key Lamp lights                [ J1-V   com 2 mike key ]
	Observe L-240 audio signal at Tipjack Audio Input 4  [ J1-H  com 2 mike audio ]

KMA 28    MIC SELECTOR TO COM 2  -  SPR BUTTON IN 
	Observe audio in L-240 panel speaker.  [ J2-8, J1-W     speaker ]
	Observe Transmit lamp lights on KMA 28 [ J2-9    copilot mike key ]
	Observe L-240 Key Lamp lights                 [ J1-V    com 2 mike key ]
	Observe L-240 audio signal at Tipjack Audio Input 4   [ J1-H   com 2 mike audio ]

L-240    FUNCTION > 1
              AUDIO INPUT SELECT > position TRANS 1
KMA 28    MIC SELECTOR TO COM 2/1
	Observe audio in L-240 panel speaker.      [ J2-8, J1-W    speaker ]
	Observe Transmit lamp lights on KMA 28 [ J2-9     copilot mike key ]
	Observe L-240 Key Lamp lights                [ J1-R       com 1 mike key ]
	Observe L-240 audio signal at Tipjack Audio Input 4  [ J1-P   com 1 mike audio ]
L-240     FUNCTION > position 3
L-240     AUDIO INPUT SELECT > position TRANS 3

KMA 28    MIC SELECTOR TO COM 3  -  SPR BUTTON IN 
	Observe audio in L-240 panel speaker.  [ J2-8, J1-W    speaker ]
	Observe Transmit lamp lights on KMA 28 [ J2-9  copilot mike key ]
	Observe L-240 Key Lamp lights                 [ J1-15   com 3 mike key ]
	Observe L-240 audio signal at Tipjack Audio Input 4   [ J1-K    com 3 mike audio ]



CHECKING THE RECEIVER AUDIO SELECTOR BUTTONS
L-240 PANEL SWITCHES
	L-240 MIKE/GEN > GEN
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 1 
	L-240 AUDIO/TEST > AUDIO
	L-240 POWER > ON
	L-240 KEY/OFF > OFF
	L-240 FUNCTION > position 1
	L-240 AUDIO INPUT SELECT > position REC 1
	L-240 AUDIO/NORM > AUDIO  (MOD #920323)
	L-240 OUTPUT SWITCH TO SPEAKER
	
LAA-1124 CABLE BOX
	Select PHONES LEFT/RIGHT > LEFT
	Select ENTERTAINMENT LEFT/RIGHT > LEFT

KMA 28    Mike Selector > COM 3
	     NAV 1 BUTTON IN/OUT > IN
	     SPR BUTTON IN/OUT > IN	
	Observe audio in L-240 panel speaker  [J1-12 , J1-W    nav 1 audio, speaker ]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones or panel speaker if OUTPUT = Phones  [J2-1 pilot phone left ]

LAA-1124 CABLE BOX  switch PHONES > RIGHT
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones or panel speaker if OUTPUT = Phones [J1-3  pilot phone right ]
L240    OUTPUT SWITCH TO XCON
	Observe audio in panel speaker.  [J2-2  copilot phone right ]
LAA-1124 CABLE BOX switch PHONES > LEFT
	Observe audio in panel speaker.  [J2-3   copilot phone  left ]


KMA 28    NAV 1 BUTTON IN/OUT > OUT
	    NAV 2 BUTTON IN/OUT > IN
	    SPR BUTTON IN/OUT > IN
L-240    OUTPUT SWITCH TO SPEAKER
	AUDIO INPUT SELECT > position REC 2
	Observe audio in L-240 panel speaker  [J1-13, J1-W   nav audio 2,  speaker ]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker. 
KMA 28   NAV 2 BUTTON IN/OUT > OUT
	   MKR BUTTON IN/OUT > IN
	   SPR BUTTON IN/OUT > IN

L-240    OUTPUT SWITCH TO SPEAKER
L-240    AUDIO INPUT SELECT > position REC 3
	Observe audio in L-240 panel speaker [J1-21, J1-W   ext mkr audio ]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker.

KMA 28    MKR BUTTON IN/OUT > OUT
	    ADF BUTTON IN/OUT > IN
	     SPR BUTTON IN/OUT > IN
L-240    OUTPUT SWITCH TO SPEAKER
L-240    AUDIO INPUT SELECT > position REC 4
	Observe audio in L-240 panel speaker  [J1-S, J1-W   adf  audio ]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker.

KMA 28    ADF BUTTON IN/OUT > OUT
	     DME BUTTON IN/OUT > IN
	     SPR BUTTON IN/OUT > IN
L-240    OUTPUT SWITCH TO SPEAKER
L-240    AUDIO INPUT SELECT > position REC 5
	Observe audio in L-240 panel speaker  [J1-6, J1-W   dme audio ]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker.

KMA 28   MIKE SELECT > COM 1 
	    DME BUTTON IN/OUT > OUT
	    AUX BUTTON IN/OUT > IN
	    SPR BUTTON IN/OUT > IN
L-240    OUTPUT SWITCH TO SPEAKER
L-240    AUDIO INPUT SELECT > position REC 6
	Observe audio in L-240 panel speaker  [J1-11, J1-W   aux audio]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker.




CHECKING THE COM 1 & COM 2 RECEIVER AUDIO BUTTONS
L-240 PANEL SWITCHES
	L-240 MIKE/GEN > GEN
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 4 
	L-240 AUDIO/TEST > AUDIO
	L-240 POWER > ON
	L-240 KEY/OFF > KEY
	L-240 FUNCTION > position 1
	L-240 AUDIO INPUT SELECT > position TRANS 1
	L-240 AUDIO/NORM > AUDIO  (MOD #920323)
	L-240 OUTPUT SWITCH TO SPEAKER
KMA 28  	AUX BUTTON IN/OUT > OUT
		MIC SELECTOR > COM 3
		COM 1 BUTTON IN/OUT > IN 
		SPR BUTTON IN/OUT > IN
		   
	Observe audio in L-240 panel speaker [J1-9, J1-W   com 1 audio output ]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker.

KMA 28	MIC SELECTOR > COM 1
		MIC SELECTOR > Back to COM 3
		COM 2 BUTTON IN/OUT > IN/OUT 
		SPR BUTTON IN/OUT > IN
L-240	OUTPUT SWITCH TO SPEAKER
	AUDIO INPUT SELECT > position TRANS 2

	Observe audio in L-240 panel speaker  [J1-10, J1-W   com 2 audio output]
	Connect Headphones to L-240 panel PHONES jack or OUTPUT SWITCH TO PHONES.
	Observe audio in headphones.  And  if OUTPUT = Phones observe audio in L-240 panel speaker.



CHECKING UNSWITCHED AUDIO INPUTS 1 & 2

L-240 PANEL SWITCHES
	L-240 MIKE/GEN > GEN
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 4 
	L-240 AUDIO/TEST > AUDIO
	L-240 POWER > ON
	L-240 KEY/OFF > OFF
	L-240 FUNCTION > position 1
	L-240 AUDIO INPUT SELECT > position REC 7
	L-240 AUDIO/NORM > AUDIO  (MOD #920323)
	L-240 OUTPUT SWITCH TO SPEAKER
	
LAA-1124 CABLE BOX
	Select PHONES LEFT/RIGHT > LEFT
	Select ENTERTAINMENT LEFT/RIGHT > LEFT
KMA 28	SPR BUTTON IN/OUT > IN
		ALL OTHER BUTTONS > OUT

	Observe audio in L-240 panel speaker  [J1-T, J1-W    unswitched audio 1,  speaker]
	Observe audio in L-240 panel phone jack  [J1-T, J2-1  unswitched audio 1, pilot phone  left]
LAA-1124 CABLE BOX PHONES LEFT/RIGHT > RIGHT
	Observe audio in L-240 panel phone jack  [J1-T, J1-3   unswitched audio 1,  pilot phone right ]

L-240 AUDIO INPUT SELECT > position REC 8
	Observe audio in L-240 panel speaker  [J1-17, J1-W  unswitched audio 2,  speaker ]
	Observe audio in L-240 panel phone jack  [J1-17, J1-3  unswitched audio 2,  pilot phone right ]
	Select LAA-1124 CABLE BOX PHONES LEFT/RIGHT > LEFT
	Observe audio in L-240 panel phone jack  [J1-17, J2-1 unswitched audio 2, pilot phone left ]

CHECK INTERCOM OPERATION

L-240 PANEL SWITCHES
	L-240 MIKE/GEN > GEN
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 4 
	L-240 AUDIO/TEST > OFF
	L-240 POWER > ON
	L-240 KEY/OFF > OFF
	L-240 FUNCTION > position 1
	L-240 AUDIO INPUT SELECT > position REC 1
	L-240 AUDIO/NORM > AUDIO  (MOD #920323)
	L-240 OUTPUT SWITCH TO PHONE
	Note:  to use a microphone for this test connect mike to L-240 Mike jack and place 
                               a jumper from Audio Input Jack 3 to Audio Jack 4.
LAA-1124 CABLE BOX
	Select PHONES LEFT/RIGHT > LEFT
	Select ENTERTAINMENT LEFT/RIGHT > LEFT
	Select COPILOT/PILOT > PILOT
	
KMA 28   INTERCOM MODE SELECT > ALL
	    INTERCOM VOLUME FULLY CW
        PASS. 1 MIKE AUDIO I/C
	Observe audio output in L-240 phone jack  [J2-4, J2-1  pass. 1 mike audio,  pilot phone left ]
	Decrease audio input until audio output mutes. (checks VOX operation-use voice only for audio)
LAA-1124 CABLE BOX switch ENT 2/ VOX OVERRIDE > VOX OVERRIDE  
	Observe audio output in L-240 phone jack  [ J2-U ]

L-240         AUDIO SELECT > position  REC 2

       PASS. 2 MIKE AUDIO I/C
	Observe audio output in L-240 phone jack  [J2-5, J2-1 pass. 2 mike audio,  pilot phone left ]

L-240    AUDIO SELECT > position  REC 3

        PASS. 3 MIKE AUDIO I/C
	Observe audio output in L-240 phone jack  [J2-6, J2-1]

L-240     AUDIO SELECT > position  REC 4

       PASS. 4 MIKE AUDIO I/C
	Observe audio output in L-240 phone jack  [J2-7, J2-1]
COPILOT TO PILOT I/C

LAA-1124 CABLE BOX  PHONES LEFT/RIGHT > LEFT
	    PILOT/COPILOT > COPILOT
L-240 PANEL
	L-240 AUDIO/TEST > CENTER OFF
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2
	L-240 MIKE/GEN > MIKE
	L-240 FUNCTION > position 1
	L-240 OUTPUT SWITCH > PHONES
	Note: to use mike for audio, connect microphone to L-240 mike jack

	Observe audio output in L-240 phone jack  [J2-8, J2-1 copilot mike audio, pilot phone left ]

PILOT TO COPILOT I/C

LAA-1124 CABLE BOX COPILOT/PILOT > PILOT
	     PHONES LEFT/RIGHT > LEFT
L-240 PANEL
	L-240 AUDIO/TEST > CENTER OFF
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2
	L-240 MIKE/GEN > MIKE
	L-240 FUNCTION > position 1
	L-240 OUTPUT SWITCH > XCON
	Note: to use mike for audio, connect microphone to L-240 mike jack

	Observe audio output on panel meter set to Audio RMS. 
	 [J1-8, J2-3  pilot mike audio, copilot phone left ]
	Observe audio output in L-240 panel speaker by setting Audio/Test > Audio  

PILOT TO CREW I/C
LAA-1124 CABLE BOX COPILOT/PILOT > PILOT
	     PHONES LEFT/RIGHT > LEFT
L-240 PANEL
	L-240 AUDIO/TEST > CENTER OFF
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2
	L-240 MIKE/GEN > MIKE
	L-240 FUNCTION > position 1
	L-240 OUTPUT SWITCH TO INT PH position
	Note: to use mike for audio, connect microphone to L-240 mike jack

	Observe audio output at L-240 AUDIO OUTPUT JACKS or on panel meter select Audio RMS
 	[J1-8, J2-12] CREW PHONE LEFT  
	Observe audio output in L-240 panel speaker by setting Audio/Test > Audio  
LAA-1124  PHONE LEFT/RIGHT > RIGHT
	Observe audio output at L-240 AUDIO OUTPUT JACKS or on panel meter select Audio RMS 
	[J1-8, J2-11] CREW PHONE RIGHT
	Observe audio output in L-240 panel speaker by setting Audio/Test > Audio  
COPILOT TO CREW I/C
LAA-1124 CABLE BOX COPILOT/PILOT > COPILOT
	      PHONES LEFT/RIGHT > LEFT
L-240 PANEL
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2
	L-240 MIKE/GEN > MIKE
	L-240 FUNCTION > position 2
	L-240 OUTPUT SWITCH TO INT PH position
	Note: to use mike for audio, connect microphone to L-240 mike jack

	Observe audio output at L-240 AUDIO OUTPUT JACKS or on panel meter select Audio RMS
	[J2-8, J2-12] CREW PHONE LEFT  
 	Observe audio output in L-240 panel speaker by setting Audio/Test > Audio  

LAA-1124  PHONES LEFT/.RIGHT > RIGHT
	Observe audio output at L-240 AUDIO OUTPUT JACKS or on panel meter select Audio RMS
	 [J2-8, J2-11] CREW PHONE RIGHT
	Observe audio output in L-240 panel speaker by setting Audio/Test > Audio  

CHECK ISO MODE OF I/C
LAA-1124 CABLE BOX COPILOT/PILOT > PILOT
	     PHONES LEFT/RIGHT > LEFT
L-240 PANEL
	L-240 AUDIO/TEST > CENTER OFF
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2
	L-240 MIKE/GEN > MIKE
	L-240 FUNCTION > position 1
	L-240 OUTPUT SWITCH TO XCON   [PILOT TO COPILOT PHONE]
	Note: to use mike for audio, connect microphone to L-240 mike jack

KMA 28  INTERCOM MODE SELECT TO ISO
	  INTERCOM VOLUME FULLY CW
	Observe  NO audio output on OUTPUT JACKS or panel meter in Audio RMS. [J1-8, J2-3] 
	
L-240 OUTPUT TO INT PH position - [PILOT TO CREW PHONE]
	Observe  NO audio output on OUTPUT JACKS or panel meter in Audio RMS. [J1-8, J2-3]

L-240  APPLY AUDIO TO AUDIO INPUT JACK 4  - [CREW MIKE TO PILOT PHONE]
	AUDIO INPUT SELECT TO REC 1
	OUTPUT SWITCH TO PHONE
	Observe NO audio output on OUTPUT JACKS or panel meter in Audio RMS  [J2-4, J2-1]

LAA-1124  CABLE BOX  COPILOT/PILOT > COPILOT 
L-240 OUTPUT TO INT PH position  [ COPILOT TO CREW ]
	Observe audio output on OUTPUT JACKS or panel meter in Audio RMS

L-240  APPLY AUDIO TO AUDIO INPUT JACK 4  - [CREW MIKE TO COPILOT PHONE]
	AUDIO INPUT SELECT TO REC 1
	OUTPUT SWITCH TO XCON
	Observe audio output on OUTPUT JACKS or panel meter in Audio RMS  [J2-4, J2-3]
CHECK CREW MODE OF I/C
LAA-1124 CABLE BOX COPILOT/PILOT > PILOT
	      PHONES LEFT/RIGHT > LEFT

L-240 PANEL
	L-240 AUDIO/TEST > CENTER OFF
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 2
	L-240 MIKE/GEN > MIKE
	L-240 FUNCTION > position 1
	L-240 OUTPUT SWITCH TO XCON   
[PILOT TO COPILOT]
	Observe audio output on OUTPUT JACKS or panel meter in Audio RMS

[PILOT TO CREW]
L-240 OUTPUT SWITCH TO INT PH  
	Observe NO audio output on OUTPUT JACKS or panel meter in Audio RMS
[CREW TO CREW]
L-240 	APPLY AUDIO TO AUDIO INPUT JACK 4
	AUDIO INPUT SELECT TO REC 1
	OUTPUT SWITCH TO INT PHONE
	Observe audio output on OUTPUT JACKS or panel meter in Audio RMS


ENTERTAINMENT 1 AND 2 INPUTS
LAA-1124  CABLE BOX ENTERTAINMENT LEFT/RIGHT > LEFT
	     PHONES LEFT/RIGHT > LEFT
L-240 PANEL
	L-240 APPLY AUDIO TO AUDIO INPUT JACK 4 [ apply 1Vac peak to peak ]
	L-240 AUDIO/NORM > AUDIO
	L-240 AUDIO INPUT SELECT > REC 5
	L-240 OUTPUT > PHONE
	Observe audio output in panel speaker [J2-16, J2-1  ent 1 left channel,  pilot phone left ]
LAA-1124  CABLE BOX ENTERTAINMENT LEFT/RIGHT > RIGHT
	     PHONES LEFT/RIGHT > RIGHT
	Observe audio output in panel speaker [ J2-15,  J1-3  ent 1 right channel, pilot phone right ]
L-240	AUDIO INPUT SELECT > REC 6
	Observe audio output in panel speaker [ J2-13,  J1-3  ent 2 right channel, pilot phone right ]
 LAA-1124  CABLE BOX ENTERTAINMENT LEFT/RIGHT > LEFT
	     PHONES LEFT/RIGHT > LEFT
	Observe audio output in panel speaker [ J2-14, J2-1  ent 2 left channel, pilot phone left ]

The above tests provide for the most common features of the KMA 28.  

The Marker Beacon Receiver will require a marker beacon simulator to input a signal.  The Marker lamps
 on the Cable Box should light same as the lamps on the KMA 28.

If you have any problem setting up the L-240 or Cable box switches for additional testing send an email
 to louie@linaire.com   List the inputs / outputs and location [ KMA 28 pin numbers] and the purpose of the
 test you are trying to run.